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Home My WebLink AboutCOUNCIL - AGENDA ITEM - 11/28/2006 - POUDRE RIVER FLOODPLAIN REGULATIONS DATE: November 28, 2006 WORK SESSION ITEM STAFF: Jim Hibbard FORT COLLINS CITY COUNCIL Bob Smith Marsha Hilmes-Robinson SUBJECT FOR DISCUSSION Poudre River Floodplain Regulations. GENERAL DIRECTION SOUGHT AND SPECIFIC QUESTIONS TO BE ANSWERED The purpose of this work session item is to obtain feedback from Council regarding proposed revisions to the floodplain regulations for the Poudre River. The goal of this review was to the degree possible, have City and County regulations the same while still balancing risk with regulation. 1. Does Council have any concerns about the proposed changes? • Floodway Rise • Floodway Modification • Product Corridor • Freeboard Level • Dryland Access • Critical Facilities in 100-year Floodplain • Critical Facilities in 500-year Floodplain •LOMR-Fill Requirements 2. Is there any additional information Council would like? BACKGROUND Properties in the Poudre River floodplain in the City of Fort Collins have different regulations than those located in Larimer County. Approved developments in the County are sometimes unbuildable after they are annexed to the City due to these different regulations. The approved East Mulberry Corridor Plan identified the need to make floodplain regulations for the Poudre River in the City and County as consistent as possible. Staff has been meeting with County staff to identify where City and County regulations differ. Because each jurisdiction's authority and tools for administration of floodplains are different, identical regulations are not feasible. City and County staff have identified however, several recommendations that would address most of the problems created by the different regulations. This analysis by staff was done under the premise of finding areas where common criteria was possible while balancing risk with regulation. November 28, 2006 Page 2 Proposed Changes Attachment A is a table summarizing the changes proposed to better align the floodplain regulations. Attachment B is a Quick Guide used to help explain the proposed floodplain regulations. Attachment C is a map of the Poudre River showing the various floodway configurations along the corridor. Attachment D shows this same information with publicly owned properties highlighted. Attachment E contains acreage information relative to the proposed changes. Finally,Attachment F is a copy of the staff presentation. Outreach Activities Presentations were made to four City Boards and Commissions to solicit their comments or recommendations. A joint City and County open house was held to solicit comments from the public on the proposed changes. City Boards and Commissions Following is a summary of the various boards and commissions discussions. Minutes were not available when this packet was distributed,however,a recommendation from the Land Conservation and Stewardship Board is included on Attachment G. Water Board—The Water Board formally passed a motion(7-2)in support of the proposed changes with Alternative 2, to not allow hazardous materials critical facilities in the 100-year floodplain. Two members did not support the motion because they believed the City shouldn't lower any of its regulations for the Poudre River. Planning and Zoning Board—The Planning and Zoning Board discussed this item at a study session and it was the consensus of the members present to support the proposed changes with Alternative 2,to not allow hazardous materials critical facilities in the 100-year floodplain.One member did not voice an opinion because they believed they did not have enough information to express an opinion. Land Conservation and Stewardship Board—The Land Conservation and Stewardship Board did not act on the proposed changes as a whole.The Board supported staff's minimum recommendation to remove the product corridor and dryland access regulations. It also supported staff's proposal to add stability and environmental factors to the County's floodway modification regulations.Finally, the Board recommended Council adopt Alternative 2, to not allow hazardous material critical facilities in the 100-year floodplain. The Board did not take action on the other staff recommendations because it believed it was not under its area of expertise to offer a recommendation. Natural Resources Advisory Board—The Natural Resources Advisory Board discussed this item at two of its meetings and formally passed a motion unanimously in support of Alternative 2, the regulation of hazardous materials in the 100-year floodplain due to concerns about the environmental impacts of hazardous materials in flood waters. The Board chose not to take a position on the other recommended changes. County Boards and Commissions Latimer County Board of County Commissioners and County Planning Commission—The Board of County Commissioners and County Planning Commission held a joint work session to discuss the proposed changes. County staff presented history and salient points of the proposed changes to November 28, 2006 Page 3 the floodplain regulations. Clarification was made that on a lot with an existing structure, any new structure would need to be 24-inches above the flood elevation or an increase of 6-inches over the current regulations. The question was raised if the proposed requirements for floodway modification would prevent"channelization"or narrowing of the floodway and staff responded that the language regarding stability was intended to do just that,although additional language might be appropriate. The comment was made given the degree of effort that has been expended by staff;they would like to see the effort move forward in a timely manner if possible. Open House Summary A joint open house between the City and County was held on November 14`s at the Lincoln Center. Approximately 3,500 notices were mailed to city and county property owners in the floodplain along with a press release in the newspaper advertising the open house. Approximately 55 property owners attended the open house. At the open house a comment sheet was available for comments. Three comment sheets were returned requesting copies of the open house materials and the other stated that more monies should be directed toward flood control projects. Verbal comments received by staff were overall in favor of the proposed changes. ATTACHMENTS Attachment A—Summary Table of Proposed Changes Attachment B —Quick Guide of Proposed Poudre River Floodplain Regulations Attachment C—Map showing the floodplain and floodways along the River Corridor Attachment D —Map showing the floodplain and floodways along the River Corridor with Public Property highlighted Attachment E—Floodway and Product Corridor Acreage Comparison Table Attachment F—Power Point Slides Attachment G—Land Conservation and Stewardship Board Recommendation Attachment A O ram+ ram+ ,•.i ram+ ,•.i ram+ ,•.i ram+ ,•.i ram+ U � ,•. � N Z O O O O O O �' �' O -� O U U U U U U U U U U U U U ° U U U CC Cd Cd ' 03 ' Cd U to . U . U . U . U U Cd Uto Cd o °° '' �. Cd Cd Cd M O N 03 0O N N + O Nto to U N Cd Cd Cd Cd Cd •--� U Cd U U I U 'al "Cl U • bA "" U v' '" '"v0000 Cd 0 O 4� cd r .. O AMA N p 9 0 0 0 p O p N p �y � U U U Cn U U N N U Cd +� U s , N U cd cd O O OT00004Q cd ao' o o ¢¢ m I V o Cn � � �� WO � o � Cdonbo U O vi COOp U y U Cd rsc� oioo U 4 U M U 7 U M IZ O O � N U �i � �•' a U U U --i O O "d N O O O O O N w w w w a) U U 0 N � N U N N � O O Cd Cd N O, m cd rci O O U � N � O O • O O y� U Cd U N O � U N i cH Q, N 'z� W � �. O GC U O U N � U •.. Cd cH GC c� cd C� .w U � � Proposed City of Fort Collins Floodplamin Regulations for the Poudre River LV - _, \ c ide IIIIiIIA& Z ILL or -00 Note : This guide was prepared as an educational tool to help explain portions of the floodplain regulations, and is not intended as a complete or detailed explanation of the legal requirements that may apply to a particular property. Article II of Chapter 10 of the City Code specifies the requirements and prohibitions that are outlined generally in this guide and is the controlling legal document in the event of any conflict or inconsistency between this guide and the City Code. The Code provisions can be found on the Web at http://www. colocode. comlftcollins/municipal/chap ter10. h tm. D City of Fort Collins cD Prepared by Fort Collins Utilities , PO Box 580 , 700 Wood St. , Fort Collins , CO 80522=0580 (970) 221 -6700 Utilities www. fcgov. com/stormwater/fldplain.php 10/06 00 2 Purpose of Floodplain Regulations Minimize damage to Protect new properties existing properties from damage Protect human life and health Protect the natural areas N Q° along the river corridor required to convey flood flows Floodplain Facts • Property in the 100-year floodplain has a 1 percent chance in any given year of being flooded . • Over a 30-year period, there is a 26 percent chance that a property in the 100-year floodplain will be flooded . For comparison, there is only a 5 percent chance that the building will catch fire during that same 30-year period . • Some properties have an even higher risk of flooding because they are in areas where smaller, more frequent floods cause damage . Table of Odds for Different Events Event Odds Structure in the 100-year floodplain being flooded in any given year 1 in 100 Matching one number plus Powerball in the Powerball Lottery 1 in 124 Structure in the 500-year floodplain being flooded in any given year 1 in 500 Annual chance of being killed in a car accident if you drive 10 , 000 miles/year 1 in 4,000 Being struck by lightning 1 in 600,000 Winning the Powerball Lottery jackpot (matching five numbers and the Powerball) 1 in 120,526,770 Types of Floodplains • In Fort Collins, floodplains are designated by the City as well as by the Federal Emergency Management Agency (FEMA) . • The FEMA-basin floodplains cover only the major drainages . Changes in these floodplains must be approved by FEMA (p . 5) . • The City-basin floodplains further identify the flood hazard . Some of the flooding in City-basin floodplains is from irrigation ditch spills or undersized storm sewers that result in overland flooding. Changes in these floodplains can be approved by the City (p . 5) . • For floodplain regulation purposes, a floodplain property is either in a FEMA-basin floodplain, a City-basin floodplain or the Poudre River floodplain. Revised Mapping • Because the City has remapped all of the floodplains in Fort Collins, except the Poudre River, to reflect the rainfall standard adopted by City Council in 1999, there now is a new City floodplain in the areas that also have a FEMA floodplain. • For those floodplains, other than the Poudre River, currently designated by FEMA, the revised City mapping has been submitted to FEMA for adoption. FEMA adoption is expected in late 2006 . Floodplain Designations Floodplain Name Poudre River FEMA -Basin City-Basin Poudre River X Spring Creek X Dry Creek X Cooper Slough X Boxelder Creek X Fossil Creek X Old Town X Canal Importation X McClellands Creek X Mail Creek X Foothills Channel X West Vine X 3 4 Floodway 100-year Floodplain Flood Fringe City Floodway Flood Fringe 6" rise Area of floodplain that is allowed to be filled • The floodway is the portion of the floodplain with the greatest depths and velocities . • The floodway is the area of highest risk. • The floodway must be preserved to allow the floodwater to pass through without being obstructed . • Areas along the flood fringe are allowed to be filled and developed, but this raises the 100-year flood level. The City has set an allowable rise of 0 . 5 feet. Floodway Modifications • Floodways can be modified, but the applicant must be able to show that the project causes no-rise in the 100-year flood level. • In the Poudre River floodplain, the applicant must submit information to FEMA for approval before and after construction if the boundaries of the floodplain or floodway change . • If the applicant's project causes a rise, the applicant must show the entire rise is on their property or obtain easements from other property owners . No structures can be impacted by a rise in the flood level . • The floodway modification will be evaluated based on broad criteria, including: —effects upon lands upstream, downstream and in the immediate vicinity; —effects upon the 100-year flood and channel stability; —any adverse environmental effects on the watercourse, including bank erosion, streamside trees, vegetation and wildlife habitat; —any adverse effects on the flood elevation, velocities, rate of rise, channel stability and sediment transport; and —protection of the natural areas required to convey flood flows and retain flow characteristics . Example of a Floodway Modification Original Floodway New Floodway 100-year flood level le food v i flood level fill ` cut 5 6 Summary of Floodway Development Regulations Residential Development Non = Residential Development Mixed - Use Development ( Residential and Non - Residential in the same building) • New residential development is not • New non-residential development is not • New mixed-use development is not allowed . allowed . allowed . • Fill is not allowed unless the • Fill is not allowed unless the applicant • Fill is not allowed unless the applicant applicant can show no-rise (Floodway can show no-rise (Floodway Modifications, can show no-rise (Floodway Modifications, Modifications, p . 5) . p. 5) . p. 5) . • Residential additions are not allowed . • Non-residential additions are not • Additions are not allowed to a mixed-use allowed . structure . • Remodels are allowed subject to the • Remodels are allowed subject to the • Remodels are allowed subject to the substantial improvement requirements substantial improvement requirements substantial improvement requirements (p. 14- 15) . (p. 14-16) . (p . 14-16) . • Manufactured homes are allowed only • Mobile buildings (modular offices) are in existing manufactured home parks . allowed only in existing mobile building developments . • Redevelopment (rebuild) of an existing • Redevelopment (rebuild) of an existing Redevelopment (rebuild) of an existing structure is not allowed . structure is not allowed . structure is not allowed . • Detached garages and sheds are not • Detached garages and sheds are Detached garages and sheds are not allowed . not allowed . allowed . Summary of Floodway Development Regulations (continued) Residential Development Non = Residential Developmenti Mixed - Use Development ( Residential and Non - Residential in the same building ) • Critical facilities are not allowed (See • Critical facilities are not allowed (See • Critical facilities are not allowed (See proposed alternatives on p. 18) . proposed alternatives on p. 18) . proposed alternatives on p. 18) . • New basements are not allowed below New basements are not allowed below New basements are not allowed below the freeboard level (p. 10) . An existing the freeboard level (p. 10-11 ) . An the freeboard level (p. 10-11 ) . An basement in a substantially improved existing basement in a substantially existing basement in a substantially structure is not allowed to remain improved structure can remain if improved structure is not allowed to (p. 10 and 14-15) . floodproofed (p. 10-11 and 14-16) . remain if it is in residential use (p. 10 and 14-15) . An existing basement in a substantially improved structure is allowed to remain if it is in non- residential use and floodproofed (p. 10-11 and 14-16) . • New outside storage of material or New outside storage of material or equipment, including flotable materials, equipment, including flotable materials, is not allowed (p. 20). is not allowed (p. 20) . 7 8 Summary of Floodplain Fringe Development Regulations Residential Development Non = Residential Development Mixed - Use Development ( Residential and Non - Residential in the same building) • New residential development is not • New non-residential development New mixed-use development is allowed . is allowed . Must meet the freeboard not allowed . requirements (p. 10-11 ). • Fill is allowed . Fill is allowed . Fill is allowed . • Residential additions are not allowed. Non-residential additions are allowed . • Residential additions are not allowed to Must meet the freeboard requirements a mixed-use structure . Non-residential (p. 10-11 ) , additions are allowed to a mixed-use structure . Must meet the freeboard requirements (p. 10-11 ) . • Remodels are allowed subject to the Remodels are allowed subject to the Remodels are allowed subject to the substantial improvement requirements substantial improvement requirements substantial improvement requirements (p. 14-15) . (p. 14-16) . (p. 14-16) . • Manufactured homes are allowed only Mobile buildings (modular offices) are to replace an existing manufactured allowed only to replace an existing home or fill a vacant lot in an existing mobile building or fill a vacant lot in an manufactured home park. existing mobile building development. • Redevelopment (rebuild) of an existing Redevelopment (rebuild) of an existing Redevelopment (rebuild) of an existing structure is allowed (p. 14-15) . Must structure is allowed (p. 14-16) . Must meet structure is allowed (p. 14-16) . Must meet meet the freeboard requirements (p. 10) . the freeboard requirements. (p. 10-11) . the freeboard requirements (p. 10-11) . • Attached garages are not allowed . Attached garages, detached garages and Attached garages, detached garages and Detached garages and sheds are sheds are allowed (p. 17) . sheds are allowed (p. 17). allowed (p. 17) . • Critical facilities are not allowed (See Critical facilities are not allowed (See • Critical facilities are not allowed (See proposed alternatives on p. 18) . proposed alternatives on p. 18) . proposed alternatives on p. 18) . Summary of Floodplain Fringe Development Regulations (continued) Residential Development Non - Residential Development Mixed - Use DevelopmentResidential and Non - Residential in the same building ) • New outside storage of equipment New outside storage of equipment or or materials that are considered materials that are considered "floatable" "floatable" is not allowed (p. 20) 0 is not allowed (p. 20) . • New basements are not allowed New basements are allowed . Must New basements are not allowed below below the freeboard level (p. 10) . An meet freeboard requirements and be the freeboard level for residential existing basement in a redeveloped or floodproofed (p. 10-11 ) . An existing portions of mixed-use structures (p. 10) , substantially improved structure is not basement below the freeboard level in a An existing basement in a redeveloped allowed to remain (p. 10 and 14-15) . redeveloped or substantially improved or substantially improved structure structure can remain if floodproofed is not allowed to remain if it is in (p. 10-11 and 14-16) . residential use (p. 10 and 14-15) . New basements are allowed for non-residential portions of mixed- use structures . Must meet freeboard requirements and be floodproofed (p. 10-11 ) . An existing basement in a redeveloped or substantially improved structure is allowed to remain if it is in non-residential use and floodproofed (p. 10-11 and 14- 16) . Summary of 500 -Year Floodplain Development Regulations Residential Development Non = Residential Development Mixed - Use Development Residential and Non - Residential in the same building ) • Life-safety and emergency response Life-safety and emergency response Life-safety and emergency response critical facilities are not allowed (p. 18) . critical facilities are not allowed (p. 18) . critical facilities are not allowed (p. 18) . 9 10 Freeboard • Freeboard is a factor of safety that accounts for the allowed rise in flood level due to development in the flood fringe and for larger floods and debris that may cause the flood elevation to be higher. • Freeboard is a measure of how high above the flood level the structure must be built or floodproofed. Residential Structures and Residential Portions of Mixed - Use Structures • Freeboard is 24 inches; • Must elevate the structure; not allowed to floodproof; and • The lowest floor of the structure (p. 12-13), including the basement, all HVAC and electrical, must be elevated above the freeboard height. Fill • Fill ductwork ated 24" elevated 24" crawl space 100-year 100-yea r flood level flood level Slab on grade foundation Crawl space foundation Example of redevelopment residential elevation (See p. 12-13 for detailed foundation designs) Freeboard continued Non = Residential Structures and Non = Residential Portions of Mixed - Use Structures • Freeboard is 24 inches; • Allowed to either elevate or floodproof the structure; • In the floodway, new basements are not allowed; • If elevating, the lowest floor of the structure (p . 12-13), including the basement, all HVAC and electrical, must be elevated above the freeboard height; and • If floodproofing, the structure as well as all HVAC and electrical, must be floodproofed to the freeboard height. Floodproofing uses various techniques to make a building water tight : • Sealants and waterproof membranes ; • Closure shields in front of doorways ; and • Mini -walls to protect window or stair wells . Floodproofing generally works only when flood depths are less than 3 feet . Store 100-year I I floodproofed 24" F1 flood level Fil above flood level Basement �floodproofing Example of new development non-residential floodproofing 11 12 Determination of Lowest Floor Based on Type of Foundation Slab on Grade Enclosure (above grade crawl space) The lowest floor elevation of a slab on 1 . The lowest floor elevation of a grade structure is measured at the top structure with an enclosure of the slab . that is built in accordance with the venting criteria (p . 17) is measured at the floor of the first finished ❑ ❑ Lowest floor floor . ❑ ❑ Lowest floor Freeboard E� elevation Freeboard Enclosure elevation Unfinished area Floor slab grade noHVAC l . A Basement 2. The lowest floor The lowest floor elevation of elevation of a structure a structure with a basement with an enclosure that is is measured at the top of the not built in accordance basement slab . with the venting criteria (p . 17) is measured at the lowest interior grade of ❑ ❑ the enclosure . ❑ ❑ Can have HVAC in Basement Lowest floor enclosed area Freeboard elevation Freeboard Enclosure Lowest floor Ielevation Determination of Lowest Floor Based on Type of Foundation continued Crawl Space ( below grade) The lowest floor of a structure with a crawl space is measured at the lowest finished floor if the following conditions are met: a. The velocity of the flood flows hitting the structure is less that 5 feet per second; b . The interior grade elevation that is below the flood elevation is no lower than 2 feet below the lowest adjacent grade; c . The height of the crawl space, as measured from the ❑ ❑ lowest interior grade of the crawl space to the top of the foundation wall, does not exceed 4 feet at any point; d . An adequate drainage system is in lace, including a °u°t work c No more than q g y p g Freeboard � f Vent Crawl space 4 feet to top of totally immersible pump; d foundation wall e . All ductwork, HVAC, hot water heater and electrical is b . 4raximum Pump pppppp�-P�2 feint elevated to the regulatory flood protection elevation; and f. Venting requirements (p. 17) are met. a Velocity < s ft. per sec . If the above conditions are not met, the lowest floor is determined based on the criteria for a basement (p. 12) . 13 14 Remodels or Repair of Damaged Buildings • Remodels and repairs are allowed subject to the substantial improvement requirements (p. 15-16) . • Vertical additions (pop-tops) are considered a remodel and are subject to the substantial improvement requirements (p . 15-16) . All remodel work , , Vertical including vertical ( Pop-top) addition , counts addition toward substantial improvement ❑ 1 � � 6 Basement Substantial Improvement and Redevelopment Substantial improvement occurs when all of the following conditions are met: 1 . A building permit is requested for any repair, reconstruction or improvement to a non-conforming structure, involving alteration of any wall, ceiling, floor or other structural part of the building; 2 . The cost of the improvement, or the amount of damage, equals or exceeds 50 percent of the market value of the structure either before the improvement or repair is started or before the building was damaged; and 3 . The cost is calculated cumulatively over the life of the structure . A substantial improvement policy ensures that non-conforming structures are brought into conformance over time and are therefore protected from flood damage and the risk to occupants is reduced . Redevelopment occurs when there is a substantial improvement and more than 50 percent of the wall perimeter of any floor of a structure that is partially or completely below the flood elevation is removed or replaced and the building footprint is not increased . Residential Structures and Residential Portions of Mixed - Use Structures If a substantial improvement occurs, the lowest floor (p . 12-13) of a non-conforming structure, including the basement, and all HVAC, electrical and utilities, must be elevated 24 inches above the flood elevation. After improvements, the structure will be protected from flood damage . If a redevelopment occurs, the lowest floor (p . 12- 100-yea r ❑ ❑ 13) of a non-conforming structure, including the flood level ❑ ❑ 100-year i basement, all HVAC, electrical and utilities, must 1 / flood level lelevated 24" be elevated 24 inches above the flood elevation. After improvements, the structure will be protected Basement Basement from flood damage . filled - in Before improvement After improvement Example of residential substantial improvement or redevelopment 15 16 Substantial Improvement and Redevelopment continued Non = Residential Structures and Non = Residential Portion of Mixed - Use Structures If a substantial improvement occurs, the lowest floor (p . 12-13) of a non-conforming structure, including the basement and all HVAC and electrical, must be elevated or floodproofed 24 inches above the flood elevation. After improvements, the structure will be protected from flood damage . If a redevelopment occurs, the lowest floor (p. 12- 13) of a non-conforming structure, including the basement and all HVAC and electrical, must be elevated or floodproofed 24 inches above the flood elevation. After improvements, the structure will be protected from flood damage . m m m m Apartments Apartments m m m m Store Store StoreJFdproofed Store " above 100-year ❑ ❑ [1] ❑ 100-year I od levelI ❑Iflood level flood levelStore Store Basement Basement Basemen Basement Before improvement After improvement Example of non-residential and mixed-use substantial improvements or redevelopments Garages , Sheds and Accessory Structures • Used only for parking or storage; • Is an accessory to a main structure; • Must be anchored to resist flotation; • All HVAC and electrical must be elevated to the Use flood freeboard level (p. 10- 11 ); ❑ ❑ Primary resistant Structure Garage materials • Can either elevate to freeboard level (p . 10-11 ) or be 100-year or Shed to 24" above flood level 1 flood level built at grade; and �6 M 4 If not elevated to freeboard level, the garage or shed fill vents must meet the following requirements : • Must have 1 square inch of venting for every square foot of enclosed area; Example of detached structure Must have at least two vents located on different sides of the structure; • Have at least one vent on the upstream side of the structure; Primary Bottom of vents cannot be higher than 1 foot Structure above grade; and On D Garage Use flood resistant Flood resistant materials must be used below the 100-year or Shed materials to 24" flood level above flood level freeboard level (p. 10-11 ) . fill vents Venting Calculation Example 600 square foot shed 600 square inches of venting required Example of attached structure Vent size : 12 " x 10 " = 120 sq . inches per vent 600 divided by 120 = 5 vents 17 18 Critical Facilities 100-year floodplain : • There are two proposed alternatives for regulating critical facilities in the 100-year floodplain: 1 . Life-safety and emergency response critical facilities are not allowed in the 100-year floodplain. 2 . All critical facilities not allowed in the 100-year floodplain. 500-year floodplain : • Life-safety and Emergency Response critical facilities are not allowed in the 500-year floodplain. Life-safety And Emergency Response Critical Facilities Examples Police or Fire Station NURSING HOME SCHOOL Hazardous Materials Critical Facilities Examples GAS STATION WAREHOUSE HAZARDOUS MATERIALS STORAGE Letter of Map Revision Based on Fill A Letter of Map Revision Based on Fill (LOMR-Fill) is a FEMA process whereby a property in the flood fringe can be filled and is no longer considered in the floodplain for insurance requirements . A community must sign-off on the application to FEMA and certify that all existing and future structures will be "reasonably safe from flooding. " To meet this "reasonably safe from flooding" standard, all floodplain requirements (p . 8-9) must be met even if fill is placed and the property is "removed" from the floodplain by FEMA. 100-year Floodplain Floodway 100-year Fill flood level elevated 24" i Floodplain Fringe Example of fill placed in the flood fringe Plan View : Fill Floodplain Fringe - - - - - - - _ _ _ Floodway - - - - - - - _ _ 19 20 Outside Storage of Materials or Equipment and Floatable Materials • "Floatable material" is defined as material that is not secured in place or completely enclosed in a structure so that it could float off-site during a flood and potentially cause harm to downstream property owners or that could cause blockage of a culvert, bridge or other drainage facility. • In the floodway, all outside storage of material or equipment, including floatable materials, associated with any non-residential use is not allowed . • In the flood fringe, floatable materials associated with any non-residential use is not allowed . • In the flood fringe, outside storage of material or equipment that is not considered "floatable material" is allowed . Stacks of Lumber Containers and Drums Fleet Vehicles 0 0 0 ' 00 OD 0 Equipment Material Stockpile All of these examples are 40 OE floatable materials if not adequately secured . I Z O 0 Required Documentation and Submittals (Note: Some items may require a registered professional engineer. ) Building Permit and Development Review Approval Requirements • Floodplain Use Permit for any work being done on a structure or property in the floodplain. The permit fee is $25 or $325 if modeling is required. • Building plans showing foundation design, flood elevation, floor elevations, HVAC elevations, size and locations of vents, floodproofing design and other relevant information. • Floodplain Modeling Report if doing a floodway modification (p. 5) . (See separate modeling guidelines handout. ) No-Rise certification may be required . • Other plans or reports to document information such as grading, fill, channel stability and floodplain boundaries. Certificate of Occupancy Approval Requirements • FEMA Elevation Certificate or FEMA Floodproofing Certificate for any new structure, addition, substantial improvement or redevelopment built in any floodplain. Allow two weeks for review and approval. Requires licensed surveyor or engineer for elevation certificate; requires licensed engineer or architect for floodproofing certificate . • Grading certification if working in the floodway. • As-built modeling report, if applicable. Variances The Fort Collins Water Board has the authority to issue variances to the floodplain regulations if certain requirements are met. The Board meets the fourth Thursday of the month. An application packet must be submitted three weeks prior to the board meeting, with a $325 application fee . (See separate variance submittal handout for documentation and justification requirements. ) Floodplain Determinations and Assistance Call Fort Collins Utilities at (970) 221 -6700 or e-mail utilities@fcgov .com to determine if a property is in the floodplain or to discuss floodplain regulations. 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BE A,f� • nulrrl �• 1 fJ ,w frill Q�120 In uary�I.JI•�� ✓q Ip 1111 IlIbu" IJ�•.r• • � 1. 1 11 - 11 - 1 111 I11 111 111- - Poudre River Floodplain Regulation Revie Attachment E Property Information Overall Floodplain Information Acres of Private Acres of Public Land A Land Entire 100-year 1 , 520 1 ,410 Floodplain Entire 500-year 2,970 1 , 860 Floodplain Comparison of Product 6 Corridor to 0. 1 ft. Floodway Acres of Private Acres of Public Land A Land 500-year Product 6 603 968 Corridor 0. 1 ft. Floodway 520 960 Difference 83 8 (Areas proposed to be regulated as flood Approximately 35 fringe) acres are Developable * Comparison of 0. 1 ft. Floodway to 0.5 ft. Floodway Acres of Private Acres of Public Land Land 0. 1 ft. Floodway 520 960 0.5 ft. Floodway 410 820 Difference 110 140 (Areas proposed to be regulated as flood fringe) Approximately 65 acres are Develo able* * Cumulative Comparison of Proposed Regulations Revised Nov. 15 , 2006 Acres of Private Acres of Public Land Land Area between 83 8 Product 6 Corridor and 0. 1 ft. floodway Approximately 35 acres are Developable * Area between 0. 1 ft. 110 140 floodway and 0.5 ft floodway Approximately 65 acres are Develo able * * Total 193 148 (Areas proposed to be regulated as flood fringe) Approximately 100 acres are Developable * Developable includes properties that may develop or redevelop in the future. Properties that were gravel mined, open waters, wetlands, or have other known uses that are not likely to change are not included in this calculation. • However, the overflow area south of Harmony that is a current gravel mine that has been discussed for development is included in this developable value. Approximately 4 developable acres are in this overflow area. * * Developable includes properties that may develop or redevelop in the future. Properties that were gravel mined, open waters, wetlands, or have other known uses that are not likely to change are not included in this calculation. • However, the overflow area south of Harmony that is a current gravel mine that has been discussed for development is included in this developable value. Approximately 37 developable acres are in this overflow area. Revised Nov. 15 , 2006 Proposed Floodpia 'in Regulat 'ion Changes for the Poudre Rmiver * 4W City Council Work Session November 28 , 2006 Ckyof Fort Collins Floodplain Regulations • Chapter 10 of City Code . • Some regulations more restrictive than FEMA minimums . • Poud re River has separate regulations that are more restrictive than the other basins . «r I ' 1 Types of Floodplamins • FEMA Designated Poudre River, Spring Creek, Dry Creek, Boxelder Creek, Cooper Slough — Poudre River has separate regulations . • Locally Designated Fossil Creek,, Old Town , ON NO I NO West Vine, Canal NONO Importation , Foothills 0 Nim me 0 NO Ir NONA NO � �� . = 1 � Channel McClellands � � � - `. ' = � NO � � I � Creek, Mail Creek N." � � ONO - CITY OF FORT COLLINS FLOOD RISK MAP \ 4 An -c* What is a 100myear flood .? • The 100myear flood is a statistical designation for a specific streamflow that has a 10/o chance of being equaled or exceeded in any given year . 100 -year flood on the � 0 • ' � • . Poudre River = 13, 300 • . � ' � � � � cubic feet per second ( cfs ) What is a 500myear flood ? • The 500myear flood is a statistical designation for a specific streamflow that has a 0 , 20/o chance of being equaled or exceeded in any given year . :500 -year flood on the ': • ; • � Poudre River = 24, 100 cfs � � • • . � Past Floods on the Poudre River Peak Discharges for the Poudre River ( 1844 =2005 ) 27000 ( recorded gage record 1882 -2005 ) 26000 25000 24000 23000 - Peak Discharge (CFS ) 22000 ° MCI 100-year Discharge ( 13 , 300 cfs ) ° c 21000 0 0 20000 19000 CO 18000 m � n � ° w 17000 F 16000 a UCu 15000 s 14000 N 13000 ° 12000 3 11000 a 10000 9000 a 8000 7000 6000 c 5000 Li 4000 3000 2000 1000 0 LO ( r 00 M m O N N M M � LO CCOO (0 ti r m m O m m 00 CO m m 00 CO CO m m m m m m m m m m O) m m O) O) O) O) O) O) O) O) O Year Why are we reviewing the Pouldre River Floodplamin Regulations ? • Requested by Elected Officials as part of the adoption of the East Mulberry Corridor Plan . - City and County Floodplain regulations are different . - Leads to conflict during development and annexation processes . • Opportunity to : - Have floodplain regulations as consistent as possible between City and County in the Growth Management Area . - Balance Risk with Regulation . Will the regulations match ? • Fort Collins and Larmimer County can get the regulations closer, but they will never be the same . - Larimer County regulates based on ' land - use zoning . - Fort Collins uses a regulatory approach instead of a zoning approach . 100myear and 500myear Flood Probability • The probability that a certain streamflow will be equaled or exceeded in any given year . 00 • • Streamflow Annual in cubic feet per probability second (cfs) 10 - year flood 6,, 700 cfs 100/0 ( 1999 Poudre River flood ) 100 - year flood 13, 300 cfs 1 % 500myear flood 24, 100 cfs 0 . 2 % CITY OF FORT COLLINS FLOOD RISK MAP xw gwn.CL,Ae .uprt� . _ . _.n� •r+yw. r. pry a. r ry l P c s o i F t s 3 _ Yyy 3 9 R I �IooaplNn Lprrk llll Issue City Becomes Less Restrictive County Becomes More Status as of Restrictive Sept. 25, 2006 Floodway Rise City will change the floodway City and County staff rise from 0 . 1 ft. to 0 . 5 ft, are in agreement. Floodway Modification City will change from not County will change from only City and County staff allowing floodway modifications condition being maintaining are in agreement. for private property to allowing conveyance to also adding floodway modifications if certain channel stability and general conditions are met, environmental effects conditions . Product Corridor City will eliminate mapping the City and County staff 500-year Product Corridor and are in agreement. remove all associated regulations . Freeboard Level County will change the freeboard City and County staff level for new structures from 18 " are in agreement. to 24". Dryland Access City will remove the dryland City and County staff access requirement. are in agreement. Critical Facilities in 100- Alternative 1 or 2 — see below City and County staff year floodplain will present the two alternatives . Critical Facilities in 500- City will change from not County will change from City and County staff year floodplain allowing any critical facilities in allowing any critical facility in are in agreement. the 500-year floodplain to : the 500-year floodplain to : Hazardous Materials — allowed Hazardous Materials — allowed Life Safety — not allowed Life Safety — not allowed Emergency Response — not Emergency Response — not allowed allowed Floodway • The portion of the 100myear floodplain with the greatest depths and velocities . Highest Risk Area . 100-year Floodplain Flood Fringe city 03 ft. Floodwdy Flood Fringe 5 A - , 0.5 ft. rise i . Area of floodplain that is allowed to be filled Floodway • The portion of the 100myear floodplain with the greatest depths and velocities . Highest Risk Area . 100-year Floodplain City 0.1 ft. Floodway Flood Fringe � City 0.5 ft. Flppdway Flood \\ Fringe I I i ❑ ❑ 0.5 ft. rise T 5 o.1 ft. rise _ Area of floodplain that is allowed to be filled Current Floodway Regulations . City — • 0 . 1 foot rise for the Poudre River . • 0 . 5 foot rise in all floodplains other than the Poudre River . • County — • 0 . 5 foot rise on all floodplains , J 0 U Z E VINE DR —� EU o I� � D Iw wLTJ � Q J J Li �J AK / . HidtRisk FEMA Flood Risk Map . Aoodvtey - Area of 100 -year floodplain Mh greatest depths and fastest velocities. This hfortrauon is based on the Federal EmergencyManagement Agency(F EMPA Flood Insurance Rate Map (Fl" and the City of ■ Flood Frin a - Ma Include: Fort Collins Master Dainagew ay Plans. This later does not imply 9 Y that the referenced property w ill or will not be fee from flooding or - Areas of F E M A 100-year flood plain (FE MA Zones A, AE , AO, and AH) damage . Apropertynot in the Special Flood Hazard Area or in a - Areas of City 100-year floodplain including ponding areas and sheet Dry Designated Floodplain maybe damaged by flood greater flow areas %PAh average depths of 1 -3 feet . than that predicted on the map or from local drainage problem There is a 1 % annual Chance that these areas vtill be flooded. not shown on the map. This map does not create liabilkyon the Moderate Risk that results torn reliance on this nfpart of the Cir�. or any oftoer or fo ooen oo^yee hereof, for any damage Mayindude: All floodplain boundaries - Area s of F E M A 500-year flood plai n (FE M A Zone X-shade d). are ap p ro Xlltl ate. - Areas of F E M A or City 100-year flood plain (sheet flovo %Pith average depths of less than 1 fo at. Low Risk Areas protected by levees from the 100-year flood. ` � *�► i 0 75 150 300 Feet Areas outside of F EM A and City in apped 100-year and 500-year 1 floodp lai ns. Lo cal drainag a problem s m a y still exist. Proposed Change • City will change the floodway definition to a 0 . 5 ft . rise . • No change to the County A,S regulations . Effect of Change • Will allow for more developable land . • Flood elevations will rise over time . ■■ ■ 1 ■ l�41 r■ I ' q , i Y1 100 ftill floodway i = - _ Mill Mill powI - I ■ ■ ■IIII - ��' - - _ � sMEN Milli . • - = _ _ � - - 1■ - II — NEEN mmmm = — � _ E � m • = _ — M �� 1 IIII -_ — ■■ ■ — ■ M SON E mMEN m , L � —� � �■ MEN m _ — - -_ I — _ _ _ S_ ■ I = IIII I NINE Mel ONE = _ _ ill�ir. i1117 ■11■ ■ ■ lillll = � IIII !II '_'III 1= ■ IIII = �� ■� 111■ ■IIIIII __ I��I ■ ■ 1f � _ � 1 1■IIIIII iII1N mom r 1� 111� ■I ■� � = I■ � m111 �11 = III ,■ ■ ' ■ ■ — ■IIIIII - - _■ — _ Edoil m NUNN ME LOU HE ■ ■■■ ill .__ — illl 11 ■� i = . ■ �IIIIIINI = .__ 1- - =11I ull ■ �� NNEEN IIII ,_ ■ ■ WIN = ENE = _ = iIIIIIIN = = = = - '_ _ mm NINEONEmomm _ NINE NINE aim`—_��_ __ -- -- � _ __ � — _ -- - I■� �I■�i � ■ ill ��ll II = ■ � ■ ■ ! ? 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II11 = �1 ■Ilnil = x momm = =mommmism '�IIIII IIIIIIII = ;- 11111 = = 11111 MEN EEM missimmism - ■ _ = = I= ■11 -_ IllllIII �■ p -- ■ 1 Floodway Modification • Any change to the stream channel , banks or overbanks . — Filling , dredging , excavation , channelization , new buildings , infrastructure , etc . Original Floodway New Floodway 100-year flood level le food flood level i evel fill ` � cut Current Floodway Modification Regulations . City — • Not allowed for private development activities . • Allowed for public infrastructure only, based on no - rise in 100myear flood level , channel stability, and environmental effects criteria . • County - Floodway modification is allowed as long as there is no rise in the 100 - year flood level . Proposed Change • City allows floodway modification based on no rise in flood level , channel stability and environmental effects criteria . • County continues to allow modification and adds channel stability and envi ron menta I effects criteria , i n addition to no - rise in flood level . Effect of Change • Within City, private property will be able to modify the floodway if certain conditions are met . • Within County, criteria will be more restrictive . Product 6 Corridor • Based on the 500myear flows . • Depth X Velocity > 6 • High Risk Area in 500myear floodplamin . • An adult would have trouble standing . ' Buildings would have structural damage . • Line is close to 100myear floodway in some areas . • Technical analysis not as well defined leading to regulatory difficulties . ►p��+ ti aui7f�\f�Is 11101 ri I1111 All ■ . �_ _. Iy 'tom�'. a., J, . �- ■ � —� �r.,uwur ;��l�11.1tir1u�11111hr � ■ � ■� � � � � ■rf1t��1111111111111►\�� • � � ■ � �� rnlull�■ =. 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Proposed Change • City Criminate the Product Corridor regulations . • No change to County regulations . Effect of Change • Property in City limits will have fewer floodplain regulations related to the 500myear flood . ' ■ -I-= '-' " '�I�III�MNI �I�IIIIIINIII� ■ ■ slll ■ ■.q C . NL , _ _ I MEN I I ' 2 - al ■ ■ IIIII = MI _ __00 = All .I MEMO IIII zz MIN LINE �11= — IIIII IIII : _� _ _ � ' - - — — �mom , ■ IIII ■■ ■ • ■ _mm_ _ _ � . ILA_ _■■ � ■ � ■ z � - - ENE M MENOMINEE . 011111 A - IIIII ll" ■MEN MEN MEME ■ EM - �■ 7 � r_ il� f7 111■ ■ IIHI = 7 II , _. IIIL ■ IIII = MINIll■ m11111= �Y�II ■ ■ 7 I IIIIII MEN oil MIMI � - rmm MOM ' — _ _ _ = = = = = - MIMI iiu _ _ _u I I ■�■ . � IN I _� ._ , = = _ _ .. ■. _ . _- _ _ . _ ■IIIII■ - milli■ :: :: = ■ t = 1N. ■ - "' - � -_ � LIIII = 1 _ IIIIII = Z = = = III ' - - - _ - _ - - = s - - ' 1 �I �1�111 = ■ illl ! ■ = Ili = = = MINI 0 = = i1 = IINIIII I - minimmommimm HIM ZZ MOM 1111110111 II III M1 I IIII �� _ � _ � � s ? 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IIIL I. a ■ IIII = " ■ !��■ � 11111= rYlII ■ ■ � _ =0 ME Oil 11111111i11111 MEE OMIII III! oil ;Z ;Z MEN rmm MOM MEN = 111111 ' — �Tr ir ■ 1= rl = ME ENE _ = = = - IMEN ME VEMM MEN IMEM EMMEME ME - - _u I I ■�■ . r 1 MNII •• ■. 1 _- ._ , = = _ _ .. ■. _ . _ . _ ■IIIII■ - - milli■ :: = mmm ■ tOF _IMMEM = 1N ■ -MEN "' - EENE -_ �Mom LIIII = 1 _ 111111 � _ _ = III I = ■ illl ! ■ = Ili = _ = IIININ= 0 = = ir = IINIIIII MEN IMEMEMEN MEN AN INE _ _ _ ENE _ � _ HIM Mom milis Zoo MEN Mmm 1■n' 11111 _. ■ 1-1 11 _ _ mm RE I M1 - 1i. ■i1 ..I. =s - MIN ME ENE ' ENE ME ENEME mom 11ENE ME ro Mmo - °JIIIII 'lllZZ ME MMEN = ; _EMENEEM �� _ _ lI�II IIIIII MEN =ENE = '= = - ' IIIII= _ = III = - - — r = ■ir =_ illlllli 111� �� Freeboard Level • How high to build above flood level . • Takes into account mapping uncertainty, debris blockage, waves, larger floods, floodway rise . • A factor of safety . Fill �— FiIi elevated 24" A elevated 24" S crawl space 100-year 100-year flood level flood levIl Slab on Grade Option Crawl Space Option Non - Residential Construction • Can floodproof or elevate Store 10Q - year 1 I floodproofed 24" flood I � V� I above flood level Basement � floodproofing Current Freeboard Regulations Applies to new construction , additions and substantial improvements . • City — • Poudre River = 24 inches • All other Floodplains = 18 inches • County — • 18 inches Proposed Change • Lounty will change to a 24 inch freeboard level for new structures . • No change for the City . Effect of Change • County properties better protected . • Lower flood insurance premiums . Dryland Access • Access to the building is dry in times of a 100myear flood ( i . e . no overtopping of roadway) . • Only applies to the actual property not the public roads . D 0 Current Dryland Access Regulations . City - • Dryland Access required for any allowed new structure, addition or ' substantial improvement . • County — • Does not regulate dryland access . Proposed Change • City will eliminate the Dryland Access requirement . • No change for the County . Effect of Change • Minimal , since so few structures built and others are often granted variances . • M inimal , since off- site existing roads set the grade and are often flooded , too . Critical Facilities • Life Safety,, Emergency Response and Hazardous Materials • Considered the highest risk structures . • Important to protect to reduce risk for entire community . Police or Fire Station NURSING HOME SCHOOL *A GAS STATION HAZARDOUS MATERIALS STORAGE Current Regulations for Critical Facilities in the 100myear Floodplain • city — • No new critical facilities in the 100m year floodplain . • County — • Does not regulate critical facilities . Proposed Change • Staff not able to reach consensus . Proposed Change • Alternative 1 • Life Safety and Emergency Response Facilities County will not allow these critical facilities in the 100 -year floodplain . No change for the City . ' • Hazardous Material Facilities • City will no longer regulate these facilities . No change for the County . • Alternative 2 County will not allow any critical facilities in the 100 - year floodplain . No change for the City . Alternative # 1 Effect of Change • Life Safety and Emergency Response Critical Facilities in the County will be better protected . • Hazardous Materials Critical Facilities in the City will be less protected • Water Quality would be adversely impacted . • Clean - up and remediation costs would be higher . • Other property owners and public may be adversely impacted when hazardous materials are transported off- site . Alternative # 2 Effect of Change • Life Safety, Emergency Response and Hazardous Materials Critical Facilities in the County will be better protected . • No change for the City . Current Regulations for Critical Facilities in the 500myear Floodplain • City — • No new critical facilities in the 500m year floodplain . • County — • Does not regulate critical facilities . m ■�� $ IIIAlob IIG 'll i■ 1I MINIMNMI � � ■ — i is ■■■■■ ■ � �� umur . r Ik9■ .{ ■ � � � ""' ' 111111111111 � L2iNl1 INJ LejL911 I • ■ _1F - - - - - — � ■ � �� I I ■IIII -- I' — = cull• — �Z J ■ 2 IIII) IIIII � I u , :: ` [ lil :..IIII ■ 1 u ■ uu � rr C�LC� �: s = = IIIII ul III17 III. �1 LJ� 11I I , IIIII !' u IIEI r_II _' IIIII= i !■_ _', .=1[] �il ]�� . 11 - I=J .: J 1■IIIII. IIIII aiE ru� I WWI Ok Elmsoil nil �� ■_101 s Ilil IIII1� ■l ]I■ ] IIIII IIINII[] r■ ME IIIIIIII 1�,1 ::=. .: I r 1 ■II•�_IMilli IGII: INN=IIIIIIII�I 1 : � ■ I. _ _ I ■_ IH' : _ I 1,21 — III. _ � _ �� - s, s _ 'IIII= J IIII ! Non[II:I i I=][.�---,. iNll IIII_I[][][,11 IIIIIIIIIIIII I =M1 m = Kim II�� IuL nlll�ll I�i _ _ ■ - � � _. .� - 111 ■lion : _ � IIIII Y ' MII ' IIIIIIII illl IIIIII -' .. "I .. jIIII LJLJ i11111 _ - _ _ _ _ _ _ = = 111 �m =: oa. S, =I , Mimi INE Em mmi 1 Or Lill _ IIIIII -� �� I_= u �"^u '"" L�III■IIIII■IIIIIli111III I 1 i�'_� ■__ IIIIII 1111111111 IINIINI IIIIIIII IIIIII �I Y■� - ! IIII r I� 111�1� IIIIIIIIII : �� 11'�I'll= �. � , �J � � nClll IIII■11 :NIIII IIIIIIIIIC I,■■■■■rr � ' - ■ � - - _IIIIIIII 91111111 :IIIII: ■ moral ■ rI ls = _ "■uuuu uIN IIIIII uul II�IIIL_ •N =- -�_ I■,= rs19 IIIIIIIIII IIMi'milIIIII� Ir =]C] IIIIIIIIII IIIIIIIIII ■IIIIIII 11I _ =- -= " NMI . Proposed Change • Life Safety and Emergency Response Facilities County will not allow these critical facilities in the 500myear floodplain . • No change for the City . • Hazardous Material Facilities • City will no longer regulate these facilities . • No change for the County . Effect of Change • Life Safety and Emergency Response Critical Facilities in the County will be better protected . • Hazardous Materials Critical Facilities in the City will be less protected . • Water Quality would be adversely impacted . Letter of Map Revision Based on Fill ( LOMRmF1' 11 ) • Issued by FEMA . • Removes property from floodplain based on fill . • FEMA requires community to sign - off saying that all current and future structures will be " reasonably safe from flooding . " LOVIRmFill Example 100-year Floodplain Aww Floodway 100-year Fill flood level elevated 24" Floodplain Fringe Plan View: Fill - - - - - - - Floodplain Fringe - - - - - - - - - - - - - Floodway . . . . . . . . . . Current LOMRmFwIII Regulations • City — • Structures must be elevated 24 inches above the flood level . No critical facilities allowed . • County — • No requirements . Proposed Change • Elevation of Structures • County will require structures to be elevated 24 inches above flood level . • No change for the City . • Critical Facilities • County will not allow certain types of critical facilities . • No change for the City . Effect of Change • County properties will be better protected . • County can better certify to FEMA that structures are "" reasonably safe from flooding . " • Critical Facilities in County will be better protected . Variances to Regulations • Process exists in both City and County to grant variances . • Take into account mitigating - circumstances and unique aspects of project and / or location . What if Nothing is Done ? • Each entity continues to do its own thing . ➢ County regulates at a lower level of protection . ➢ City regulates at a higher level of protection . • Properties will not want to annex into the City because of more restrictive criteria . • Platted lots in the County may not be buildable in the City . • Floodway modification in the County will not address adverse environmental impacts . - Staff Recommended Minimum Changes • Eliminate the Product Corridor and associated regulations . ➢ Does not achieve balance of risk vs . regulation . ➢ Similar line to the floodway in many places . ➢ Methodology not as standardized as floodway leading to technical uncertainty . • Eliminate the Dryland Access Requirement . ➢ Does not achieve intended goal . Public streets leading to site often flooded . ➢ Often varied . Poudre River Floodplamin Regulations Public Outreach • N RAB — Oct . 18 * Water Board — Oct . 26 * Land Cons . & Stewardship Board — Nov . 8 • P &Z Work Session — Nov . 13 * Open House at Lincoln Center — Nov . 14 -joint Larimer County and City of Fort Collins • NRAB — Nov . 15 * Council Work Session — Nov . 28 * Council ist Reading — January 16 (tentative) Feedback Recommended Hazardous Materials Critical Facilities not be allowed in the 100 -year floodplain - Water Board - Land Cons . & Stewardship Board - P &Z - NRAB Open House at Lincoln Center — Nov . 14 - 3500 postcards mailed to property owners • Approximately 55 attended - press release and newspaper ads Overall feedback supported the recommended changes . Council Questions • Does Council have any concerns about the proposed changes ? - Floodway Rise - Floodway Modification - Product Corridor - Freeboard Level - Dryland Access - Critical Facilities in the 100 - year floodplain - Critical Facilities in the 500 - year floodplain - LOMR- Fill Requirements • Is there any additional information Council would like ? Discussion and Questions Attachment G Community Planning and Environmental Services 'J tf Co* recyc/edpaper Natural Resources Department Cit of Fort Collins Memorandum To : City Council III From : John Stok on behalf of the Land Conservation and Stewardship Board Date : November 20, 2006 Re : Proposed changes to Poudre River floodway and floodplain regulations At its November 8 , 2006 meeting, the Land Conservation and Stewardship Board passed the following motion: The Board supports certain elements of staffs proposal to revise the City's floodplains and floodway regulations and to harmonize those regulations with County regulations. The Board, however, advises Council to carefully consider the potential environmental impacts of any changes to floodplain and floodway regulations . i I c In particular, the Board supports staffs minimum proposed changes to the City's regulations including : 1 ) Abolishment of the "product six corridor; " and; 2) elimination of the dryland access requirement. The Board also strongly supports the adoption by Larimer County of the City's "general conditions " for floodway modifications . Additionally, the Board supports Alternative 2 for critical facilities in the 100-year floodplain. 200 West Mountain Avenue 9 P.O. Box 580 • Fort Collins, CO 80522-0580 • (970) 221-6600 • FAX (970) 224-6177