Loading...
HomeMy WebLinkAboutDrainage Reports - 10/27/2022City of Fort Collins Approved Plans Approved by: Date: Dan Mogen 10/27/2022 2400 Kechter Road Drainage Memo Keefe Civil Project No.: 2022-025 Page 2 of 3 October 14, 2022 Historic Adjusted Developed Adjusted Site Area Historic Site Area Developed Hardsca e or Hard Surface s Area s s Area s Concrete 3,080 3,080 1,850 1,850 Rooftop (90%) 4,975 4,478 7,360 6,624 Gravel Driveway (40%) 18,330 7,332 16,450 6,580 Total Impervious Area 26,385 14,890 25,660 15,054 Adjusted Site Imperviousness 165 Historic Drainage Basins Historically, site stormwater in historic basin A has drained with gentle slopes from the north to the south into a ditch north of Kechter Road,which flows to the east (design point 1). Basin B flows from south to north with gentle slopes and is collected in an existing irrigation channel, which bisects the property and flows east(design point 2). Basin C stormwater flows west to east via overland flows onto the adjacent property owner to the east. Basin D stormwater flows south to north via overland flows into the future Sage Creek Road right-of-way. (Appendix D) Proposed Drainage Basins With the proposed gra�el driveway construction, developed basin A will be a smaller area draining towards the existing ditch north of Kechter Road, which flows to the east(design point 1). Basin B will capture a larger area and flow into the proposed drainage swale and infiltrate into the site's landscape area(design point 2). In the rare event the drainage channel fills up and overflows, the stormwater will be directed east via overland flows and will not negatively impact any structures. Basin C stormwater will runoff from west to east via overland flows onto the adjacent property owner to the east. No improvements are proposed within developed basin D;therefore, stormwater flows will not be altered from historic conditions. (Appendix D) Stormwater Calculations The composite runoff coefficient and drainage basin runoff calculations for the historic and developed site are included in the enclosed tables (Appendix E). Using the Fort Collins Stormwater Criteria Manual (2018),the proposed stormwater runoff is estimated to decrease towards the existing Kechter Road ditch and private property to the east. There is estimated to be an increase in stormwater runoff in developed basin B; however,this stormwater will no longer discharge into the e�sting irrigation channel and will either permeate into the ground onsite or will runoff via sheet flow to the east. Basin D will not be impacted with site improvements. 2-year 10-year 100-year Basin A Historic Runoff 0.14 cfs 0.24 cfs 0.64 cfs Basin A Developed Runoff 0.08 cfs 0.14 cfs 0.38 cfs Basin B Historic Runoff 0.35 cfs 0.60 cfs 1.61 cfs Basin B Develo ed Runoff 0.62 cfs 1.05 cfs 2.84 cfs Basin C Historic Runoff 0.58 cfs 0.99 cfs 2.69 cfs Basin C Developed Runoff 0.55 cfs 0.93 cfs 2.53 cfs Basin D Historic & Developed Runoff 0.33 cfs 0.57 cfs 1.52 cfs �___��.�_z�-_�_.�.�_-_.� _ � -_ � -_ �-._ � _. �-._ � _ � .__ � __ �_-�. _. �__.�._� -_ �----�;-�_.Y.��,�__��. ❑ � � � � � ❑ ❑ � �� � � � ❑ ❑ � � � ❑ ❑ � � � � ❑ ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � > �� �� �� �� �� �� �� �� �� �� �� � �� �� �� �� �� �b �� �� �� �� �� � �� � ��J��'-.�'.C�t���������J��'-,�'�✓���✓���✓��� 2400 Kechter Road Drainage Memo Keefe Civil Project No.: 2022-025 Page 3 of 3 October 14, 2022 Based on the enclosed design, it is my professional opinion the additional runoff generated by these site improvements will not cause adverse impacts to downstream private properties. I hereby attest that this letter for the final drainage design for the 2400 Kechter Road project was prepared by me or under my direct supervision, in accordance with the provisions of the Fort Collins Stormwater Criteria Manual. I understand that the City of Fort Collins does not and will not assume liability for drainage facilities designed by others. Thank you for the opportunity to submit this drainage memo. Please do not hesitate to reach out to me if you have any questions or comments regarding the above items. Best regards, ��p,DO LICFiIr o�. .••••�•••. s C>�:�PN ' /t�c•;FO ;g�`'10/]4/22�m; : 39378 : . . . . -o • • � 9� �� Megan L. Keefe, PE/Manager o��ss/pNALEN�\�� Keefe Civil,Inc. Enclosures Cc: Brett Barrow, Creative Angle Builders > - w. � p �- p - � ` � � - p - �. �- p �- p� - � ` � - � - �. � p �- p -�� ` � � - � - w. ` � �- �-- � - �� - p - w. ❑ � � � � � ❑ ❑ � �� � � � ❑ ❑ � � � ❑ ❑ � � � � ❑ ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � > �� �� �� �� �� �� �� �� �� �� �� � �� �� �� �� �� �b �� �� �� �� �� � �� � ��J��'-.�'.C�t���������J��'-,�'�✓���✓���✓��� ' 'i ______________'__—___ _L_i___ c.n�w nNc unun Nc1cs�. � T\ ,�,ry " 'pP OF FOUNOATiOry MUSi BE ni LEA51 6"�BOVE 1NE NiGNE51 GRaDE:URRO�JNDirvG�LL BUiLDirvG.. /y- -/�L------{ ------------� - �� --------r--t ------ �cac sr Pc a mrirnurn canoc oF s�nvu.r raou rHc Puior+r,s wrHi+*Hc rasr s ro o rccr w r,cNr rn rHc Rcsiocrvcc. �I' i ' � �_PROPERTYLINE/FUTIIRE E�T I ��I I RENIIRTMEM C � � Ei iHE M N MUM F 2%4No nreE NOi i0 BE�iEEVER iHAN 339('.) '�11 I'( I I I DR NG SiAT MO�FED SinTE PLA E. 0 REDUCE TO SiAIE PLPNE COORDNATES SCALE xr 0 a.s99)353) SAGECREEKROADROW i (1.00026a]0)ABOIIi ME I II I / \ i .5 0 E PINS �lER5ECT0�MONUMENiS nN�SEClION GORNERS D'>TURBED DURNG CONSTRUC 0 MUSi BE REFERENCED nND REPLaCED I III� � � "� ��ER T E 5 PERNS OJ OF A LCEJSED SURVEYOR. �I"I ' � I � I . CO 0 SHOWN SNPLL BE/ERFED Br THE CONIRaCiOR BEFORE nNv CONSiRUCTON OR OIHER uPROVEMENTS. � o I E 1UA COVER OVER WATER LNES 5 4.5 FT AND THE MA%MI.M COVER 5 5.5 FT UNLE55 OTHERWISE NOiE�N iHE FLFNS AN�APPROVE�BY II o/ ` �— I � � t .,.— E' ERUTLiv_ I � . '' � � � . �.� � 8. SEPARATON BEiWEEN PROPOSE�WAiER SERVCE AJD ALL OiHER DRY UiLtt LNES 5 0 FT. li / ` I'. I �y s � —_——�_„ r , � EmErvi P HMAftK �I�+� � �I �4" y II F I� � ` r, L I k L� i E�OUi�wE'>iiCORNEH OF qLLOW MPR LES W,.Y nPPRO%uniE�Y 50 FT WESi OF iHE NiEFSECTON OF W�OW SPRNGS WnY nN�T SBEF�NE I RO' 0' �0' 20' b' E EV 0. 358.8 FEET Ij� �� .o nc J / � ' �� / ~\� I�I / � P P���Er��s �E�.�A�oA.�M s�RRo��o��o�E�oPMEN.��A� �Ao��srEo oF.� � oR�n _ =T- —.� � — — __� ` , � « _ , e� ' I � / " '� cn�onrous. M Pre i W � �� �- — � i o R.couNs onr�M�v�R.xER .� � � M�PROR�n oF FORr�oLL�s o�r�M>s REo�REo Fo �.P�RP�E r� o��oN�,Eo�Aro�s il� '� � / `� I � I � I ,��I i �� � NGVD292UNADJl.STEDEDAiUhu(PROR Ctt OF FORi COLLNS DATUM) NAVD88 },�gR H011i➢6E lllE�_ \ / I a,vpe.v va�,e �� -1 sIXiEo�os��ine�ry r _�I � i I i � ` PROPERiYPNS CEr10.0. � � . DR VnNG 5 AT MODFED^1AiE PL4NE.i0 REGUCE TO^iATE PLANE COGRDrv4iE5^C�LE 4T U.999I3332(i.00026615)ABGUT THE JRIG � p939 —\fi > > > �I \\ (� . NTERSECiON MONUMENTS AND SECTUN CORNERS�SiURBED�UR NG^ONSiRUCiON MUST BE REFEREJCE�AND REPLN � �� II ` P�'No�!CF�s.� J.DER THE SUPERvS ON OF A L"ENSED SURVETOft I � L_J I H_ _ _ v w i � � I � r kE.F^o 3 THs n�Tocn�orenwNc conTnrvs nFortunroH rnnr s rvor vsa�oN mE a�oTho coav ro oaTnry nu TME nForeunnon rnnr�nvnue�N � � ineas. P�R I � �j o��393�8 mi � c �- iH S DRAN'NG,ALL iNE AVTOCAO LATERS MUST BE iVRrvEO ON AND iHFwED. I � /-�: .. . ' �. . ' � 1 w / EasEUExr � "T Toh, 'W° a THE SZE nPE nND LOCnlION OF ALL KrvOwN IIN�ERGRO�N�uIILTES nRE nPPROXMATE WHEN SHOwN ON lHESE�RnWNCS i SHu�6E iHE ��. �oicn� SS�Oryp�FH�\�� RESPONSBLTv OF ME CONiRACTOR TO VERFv THE EXSiENCE OF ALL JNCERGROJJD IiLPES J iHE fREf OF iHE vrORK PEFORE fO��MENC NG NEw I� / � 1 C10NERGROU�D UPLTESNTRnCTOR SHALL BE RESPON56�E FOR�OCniNG uL�N�ERGRO�ND IIIILTES AN�SHALL 6E RESPO�SBLE FOR nLL urvKNOwN � � _ �Al__—�-� _ ryp,-_C--i ._ _____-—� _— � ` < � �_ � �. /LLL PROJECT CONIROL LiSiE�HEREOry IS PRON�EO AS 4 COURIESY. iT IS iHE RESPONSIBiLitt OF iHE RECiPiENT i0 vERiFT T�E ACCURACr JF THE f -- ___- _�9J9-- -.- - -- - (� - � cooaoNnres nNo e�vnrons s�own vaoe ro usNc TMEM roe nNv voavoses_ I� � - �----- —_ _ Zw� s 6. PI1T LOT LNES R GHiS OF WAY OR EASEMENTS SHOWN ARE APPRO%MAiE PN�ARE NOT TO BE REIJED UPON FOR FUiURE IMPROVEMENTS. /� ��a \ W p N I � ' � Jyp �� jl� � / � �� �j _ / \ / �ynr'I I U�Jow LEGEND: i'" �- I wo��w I: LLrc�Nx I � W J � vreoPosco coMvncreo reoo.o e>se �...... i � k,1 � `���� � � Y����: , - i I �, - I.� I .t`�—-x-�a�o•-� � � O BERMOPiR Vn�Li I �GRAOING LIMIT9T/ �\ � . — �\ � PROPoSED GRnvEL DRVEWnv iELEPHONE PEDESiAL � " I �090��\ ���� �{�' m F � Q� � i� '��� � / =aoroseo co�cae.e o n�eoz i �I I �I �I � fi= k� 1 I �.��� �:�W o.o a.�._ �� M � � P�wER Po�E I ms, � e�ee,ac ue,ea � i ��� � j `. . , �,.os ° � �= ceacosEo oovmsrour axo now oieEcnaa � v,.c,�eoz � _. . � �� �g �� (� � �.�,�� � i � � �� �iaa caroN ve�+E IW / _���-► ��� PRava�[o svor EiceanoN O4 saN Tnar MnrvHo� 1' II K L --.;I i II , �5,, `Q � �PROPERTV LINE �� iION �y WPiER SHUTOFF VFLVE I = _ o /) I � � "x� P WOSFO SLO E H i 1DFnrvT I a )S I �� I � ��z) E c oE � w. eesvcor - 1�� �� I I . � ..9, � ���.���� � � . exs.ncwnrEre.,ee��eE ea� ne�n�oE �I„ � , � E:o , � � � ' <s.�,. � -I i-1e�-r A � Exs.Nc uc cns sEre�cE o wnrER.nE.Ere II ' I � rs � STEEL POSi � � .,'�� i _ IXSiNG lIG ELECiRCAL SERVCE � W 1.. � �i ti � � 'I r 00o Posi PROPERTYLINE� �I� �� I '�"�' G ,^//e I/ I � � ,i EX SiNG OVERHEA�E�ECiR C LNE �DECOVOVS TREE I < " . Q . . EXSnNG FE�cE +j�(E coNFEre0�5 mEE :, i � '�I � �� �� ` Q O � -. « GNA ry LNK FENGE �SNRUB �. � 4 1 I O � � TFEE SiJMP IW�� \ � I �/ r�\ � � I � a9 qO�Si� � I 1\ y4oa II pRA01NGLIMR9 �y Q � - FBER OPiC LOCniE I a � �� � asEas) / . -. �^ AREAOFDISTURBANCE-O.6ACRE �FErvLE GnTE � Y ---�- ExSiNG FLOW LNE � SGN � �/ I 1' �� `� � I \ w a � ExSiN�PPE 0 CONTROL PONT �F^'Frvr � _ �.,,i� e�� L 'R S� r v Y � eoce av AsaxAir i�i � � �� _,-' � � Z Z rc�er �� Ar - ill; . -F . - -- -- �' � 0 � �c ce � i �.a„E �.. ��� ,: � �a;- W Q O ii�l i =1-,.. f � �; T� � O � v i i. . � � � � .E, ABBREVIATION LEGEND: �� � .�, i' �� O O �avv e[si Mnrvnc[MENr=awcic�5 `\ \ � � PE I KEGHTER ROAD ROW LL c e.s.Nc cFo�No k a: aa �` �"� � / � N <. � - E..,.�a aE -c�wo ,:� 90 I �, PEa�.�n P� �no �m�.� a � ,ao� 1 � ao�so.�o��.� x Exs*Ho ` �� � rcal /%- , coLLns�ove�wo wA1eR osraa '� ^ �' � �� � G viow�rvccw.oe � i � � 50 -- r- �F---"-- --- i- - % � a � _ __ __ _ __ o vacre oarc , i - - � . �� ... � .. Fs F N sHeo sureFnce(aoNcreele) ., N, ' . ,fir,n i�a�.. — x . x ca cRnoE eaEnK ' � ' - � ep � xP HeH corvr � �/ _. I �— ' � /" � ��, � �� ��<o.,, na.��.as�<mn��.m�����: �ss e �r I I ��. r one ovEeHeno e�eclac � � �- �- _ � �_� ___—__ PFA POVDRE F LL AVTMRqL — — I � � T` —— � P�REA POVDRE V Ev R ELECiRC n550Cn�N , I I _———� � �' � � ROW RGni OF WAY _ .-3t-�". � -—. \ � ..'Jf _ . _— EET _ � �� ��oER���No — � — _ � ` — � � — — — —— — , „ti�o�. 1 OF 1 _ �— � � .—ta--- —_. -- — Calleemreyaag KECHTER ROAD 3 Hydrologic Soil Group—Larimer County Area,Colorado � � (2400 Kechter Road) � iV �+ 497120 497140 497160 497180 497200 497220 497240 4972fi�J 40°30'38"N . �I. 40°30'38"N � .* � � � ' k �� —� a � � r —� i � '� � � —� f• � � s + . � �s , � —� � � �I �.. � �;+i� �' ' —� `�� , - - � �4 � � � � � 4 M1 * —� { �— — .. ' —� r � �� � —� � � Y y � . � ��� � � �� '_F � � Soil Map may not be valid at this scale. � � '���� . � 40°30'32"N � �� '� I � I � I I � 40°30'32"N 497120 497140 497160 497180 49TZ00 497220 497240 497260 3 3 � Map Scale:1:942 if printed on A poiUait(8.5"x 11")sheet. � � N Meters � 0 10 20 40 60 n Feet �\ 0 45 90 180 270 /� Map projection:Web Merotor Comer coordinates:WC-S84 Edge tics:UTM Zone 13N WGS84 uSbn Natural Resources Web Soil Survey 10/12/2022 � Conservation Service National Cooperative Soil Survey Page 1 of 4 N V O O N -a 0 N N N � � � �� N � w � � N � 7 N � i N N m N � � -6 O d U O '� � U N r L N -O N I � 7 O (6 T � O_ ' � � U O � � � O � � � U N � � Z � N � � ' (Vh N � � � U � � � E � � a N ._ � � p_ � — Y UI � � N — U Z (6 � � � (R � p � Y � � � � (n a � N U1 � U�Di � O � ip fl--a � (B � (0 M O_ y � � U O O � Y � .-:C � � N � � y � s Z o � a� s � � o c� � � � a� N � 3 ui N U` � NZ m Z Uo ui v � u� � Q 3 a� o Q tn u> a 3 -a o � '> � � .Q Y N m p W y � � � m � �N o u� � ,� � � � Q m � m � a�i s ui s c ��u�i m � Q n � � c � ui n � � o a Q o � a� � N � m v � � •� Y c o � 3 �u� m o �a ui � LL a> � � � c > � o a`� a�'i � � i> c Ea� o � u' � E � mE � Z y s aYo � o � � � a .° a� � oQ U � m Q � � E ,a� 'Q o � a a� � � � rn � 'o ui ,� -o o � m � � m a o c >,a �na � m >� tnZ •on=a -o � E � a��i � � � � c V T 9 � f0 U N � > O N Q.V p ..�. N ' UI � �i � �.�-. 7 a � tl/ E � J f/� t// C N f9 - J � Q U/ L � � O � m E no � � � m � � � Q � � a`> N m a> o N os �n � � c� y' ,�,�, Z �,� � s � � �� °� m id w � � �6 � �� a�i � � � o v � •o c �' fl- � >, a> � m m� ,�� � p� N °� .� o -o m o_ � 'o c m "' o c c° Z � � 3 � � v o Q m " m f9 s c Q m � tn a� ` E rn >, � � � � � � � � '` � � 3 0 '� Q � �n E N o o� � a� c°�i 'N � � � o c � ° � � °3 0 > L a m o � � � � � o u�i o •` °1 a Q�° � N u�i � � 'o u� �� c N � �- a� in a�'i � o `n o 'o_ � m m a� a `—° u�i � c m m m � � o n.a?;a a� v uiy — Z — � :: c� a� E m� � N f9 � '_ C O U N N p N p f6 O (A� V L .� O 7 O !C? f9 O L O L o � � � w E — � rn a E cn � c� � `o_a Q m H o cn cn cn � 0 c� H � .� rn 0 U � T � � Q i T � � a � U � Z'o � � � � � � �r�-. .� � = m m � u� � a`> I Y m Q o n p m `� u, T j U � � > f6 >. L � 0 V l6 C N Q N 3 � � � � � � N N O 0 fn "O y N ..�. O O L Z U � � w6 p a' �' a .� � m N N � O � � O � O N � C f6 � fn f6 0 N U U o Z � in o � S � � � ,o Q � 'ia c = Q R W 0000 � a � � � � � � � � w � � m J � � � � a � � � a � � � o 0 � � � � N O O �..� � C O rn d y a� y Q o �. � a � c c �, � a o 0 0 0 � o 0 0 o a o 0 � Q � Q Q m m U U o z � Q Q m m U U o z � Q Q m m m c c c y c � !� � � o ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ o � � � � ' � � � o0 o e ■ � � z d •p N N N 3 � Q y O y O p_' r6 _ � i � 7 � C R O Z U � �i, Hydrologic Soil Group—Larimer County Area,Colorado 2400 Kechter Road Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 35 Fort Collins loam, 0 to 3 C 1.8 66.9% percent slopes 36 Fort Collins loam,3 to 5 C 0.0 0.6% percent slopes 74 Nunn clay loam, 1 to 3 C 0.9 32.5% percent slopes Totals for Area of Interest 2.7 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential)when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential)when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surFace, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. u� Natural Resources Web Soil Survey 10/12/2022 � Conservation Service National Cooperative Soil Survey Page 3 of 4 Hydrologic Soil Group—Larimer County Area,Colorado 2400 Kechter Road Rating Options Aggregation Method: Dominant Condition Aggregation is the process by which a set of component attribute values is reduced to a single value that represents the map unit as a whole. A map unit is typically composed of one or more"components". A component is either some type of soil or some nonsoil entity, e.g., rock outcrop. For the attribute being aggregated, the first step of the aggregation process is to derive one attribute value for each of a map unit's components. From this set of component attributes, the next step of the aggregation process derives a single value that represents the map unit as a whole. Once a single value for each map unit is derived, a thematic map for soil map units can be rendered. Aggregation must be done because, on any soil map, map units are delineated but components are not. For each of a map unit's components, a corresponding percent composition is recorded. A percent composition of 60 indicates that the corresponding component typically makes up approximately 60% of the map unit. Percent composition is a critical factor in some, but not all, aggregation methods. The aggregation method "Dominant Condition" first groups like attribute values for the components in a map unit. For each group, percent composition is set to the sum of the percent composition of all components participating in that group. These groups now represent"conditions" rather than components. The attribute value associated with the group with the highest cumulative percent composition is returned. If more than one group shares the highest cumulative percent composition, the corresponding "tie-break" rule determines which value should be returned. The"tie-break" rule indicates whether the lower or higher group value should be returned in the case of a percent composition tie. The result returned by this aggregation method represents the dominant condition throughout the map unit only when no tie has occurred. Component Percent Cutoff.� None Specified Components whose percent composition is below the cutoff value will not be considered. If no cutoff value is specified, all components in the database will be considered. The data for some contrasting soils of minor extent may not be in the database, and therefore are not considered. Tie-break Rule: Higher The tie-break rule indicates which value should be selected from a set of multiple candidate values, or which value should be selected in the event of a percent composition tie. u� Natural Resources Web Soil Survey 10/12/2022 � Conservation Service National Cooperative Soil Survey Page 4 of 4 National Flood Hazard Layer FI RMette :�: FEMA Legend SOS°2'18��W 40°30�48��N SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT , . : '�" ,� . �+ ,�p � * Without Base Flood Elevation(BFE) � - " r Zone A,V,A99 � �� sy; � '�'��'���� � �F`� � �f �� � _ `���'� With BFE or Depth zor,e aE,aq nH,vE aR � ��r� ,. SPECIAL FLOOD � ' , �� � � c �� � ��� • � �' � HAZARD AREAS Regulatory Floodway � � � �M "�. � - � � ' ��� �s��' ""� ,,,;.'� , _ .,� � �t n� , � ;, *s 0.2%Annual Chance Flood Hazard,Areas ,�� y t � . ' � � of 1%annual chance flood with average �' f ' � w , � � • depth less than one foot or with drainage � i F �; 1 „ ' �► �� �► areas of less than one square mile zone x `' � + �• �� ¢ . F� � Future Conditions 1%Annual k 1 ' �� „ `'� ��_ . _ � +� ► Chance Flood Hazard zo�e x •:�_ _ _ j�h ,� ���et � J ' � , -� t �-�� Area with Reduced Flood Risk due to � �t � w �w OTHER AREAS OF Levee.See Notes.zone x _ �+ � � �' y� c'i ��. FLOOD HAZARD Area with Flood Risk due to Leveezone o . R ` r � , _ �~.� � . . ' �' 'f. ' , � k` .,�j,� b � '� - L . NO SCREEN Area of Mmimal Flood Hazard zo�,e x � h � T s'd P..„a i v._ . � "�-� ��� Q Effective LOMRs � i.. Q�S'cr i ► }'. i � ` e � OTHER AREAS Area of Undetermined Flood Hazard zone� _,.. . � + �' �� � ¢ GENERAL -—-' Channel,Culvert,or Storm Sewer . � �' �' j �` � ` »��+I�, � +� :. � Y STRUCTURES i i�i i�i Levee,Dike,or Floodwall , , . ._ , M 4 ' � �, y � . ,�,� � + � ��# � B Zo•Z Cross Sections with 1%Annual Chance ,�, , � �� ��•5 Water Surface Elevation i� Ci�"���Foi�t�3iii,� �'+R.E� t�F r:�91P'JIf�9AL�FLt�[��7 �-l'AZ.ARC7�`"' ' � . e- - - CoastalTransect s � ' ;,,' ,�s '`' 4� � ^^^^�s+3^^^^�- Base Flood Elevation Line(BFE) � �0�0 1 4� �M.' ' � '1�+� �'` � i��� Limit of Study � � fi � � �. � � � � � M • �y ' - Jurisdiction Boundary " a ��� '�- � � f� � --- — Coastal Transect Baseline � � '� � �,,: ,� .�,p� p g ��� '�"-_ �t x � � , � ,, , r OTHER _ — Profile Baseline - FEATURES Hydrographic Feature �'�''� �-�., t 1 k • .� �N � � F 1 '�' y� �.IM - ' . � � � ! ' M � " �ia lY �-_ �. '� -+ ' ' Digital Data Available N cF,, ' `�•- .- � �� + �� ,, � �' + � + 1�4 '�� I � � i + No Digital Data Available o�� � : - J � � . ��1 � � y MAP PANELS pped :; 3 ;,~ �� r� � � ,,,� . i," J �� N� �� � " The pin d splayed on the map is an appr - }�� � � , �" � oximate '�, � � r �_�` � , , �� point selected by the user and does not represent � � i* ° � 1 �, ��_T � ; � � +i* an authoritative property location. I '1� �� i q� � �u=� }` � �1� � � � '� This map complies with FEMA's standards for the use of � '�''� p,� p ��M'` `� � digital flood maps if it is not void as described below. T6r+1 F��",��1 5" p� �i�; � The basemap shown complies with FEMA's basemap � ;, � � �� � .,� '"�� � r f��* � �, � ,�, ` accuracy standards " �``' � - N+ a �� �� � �' � � , � � '� � •� The flood hazard information is derived directly from the . � � � �,L�' ,� � authoritative NFHL web services provided by FEMA.This map � � '* , +t`,� was exported on 3/22/2021 at 4:11 PM and does not � � � i '� � reflect changes or amendments subsequent to this date and �'�'; �, � � :� p time.The NFHL and effective information may change or q become superseded by new data over time. , � , � � ^ ��, rt x: � This map image is void if the one or more of the following map 1� ' � C ; � � ' �� ' w ' � elements do not appear:basemap imagery,flood zone labels, • V '�' � * legend,scale bar,map creation date,community identifiers, � (� � '�' � ���-���-��- '� � � '+' , FIRM panel number,and FIRM effective date.Map images for Feet 105°1'41 W 40°30'21'N unmapped and unmodernized areas cannot be used for 0 250 500 1,000 1,500 2,000 1.6,��� regulatory purposes. Basemap:USGS National Map:Orthoimagery:Data refreshed October,2020 FCMaps572.0Feet szo-zzoz oH aor o zzoz n oi nea ..e3� WOO'1IA103d33A@7�J3W"�� � �� OOH2JOlOJ�SNIIIOJ 12JOd sry ax3e �on vva Eo..... y .��� T 8089'S4Z(OL�� ����.� � - 9ZSoao�SN�„o�lao� - J 1181HX3 3J`dNlt/aa 0 ia3ais lia��oa�sz�c � � �rvi'�ini�3�aa� `��' d`d02�2��1H�3�i OObZ 9 ' T P B� � ��� � rc _ ////PROPERTY 4NE / m / �an e�csa a,�ooa.00s � �� �� \�o- --a: �w T '� --- -�- �—i � i i �.a.�� fl I \ � �—..�Ir "�I I R I I I _G� zp S �/ � <W„ � ` � � � ii i ' �J —�� � R � � � � /° � � ��� , I ) � � � � --- —_ 1 '�IM I�I� ' i I� i i--- --� � �r� �r i � ��� / � � ��-,/��`, � �� i 1 I � � � , �� ���--- ---� � � �i ,� ��� � � ��i�\�I ` �� �I I���I I - '� � �� i � ' � �� J"� o � ♦� � ��t ; ��„��.I� a ' �i �3� � �o�� � i � i � i � � . ��. w IA I l� yI o � o Q III I LLo I II� IL�N l6z I I�-1 ,'.� I ^_ ao. � � � � I, II I11 � ml H a' �I �1 � II � Z II i �' II I �) Wao` � ��I I !n� ', �. Ir I � I �I 3 H R I � �p ^ 1� p� � � I I '.� _ WI I w u I#I I� � / \odi �I\� I I I :.� Q � w L I � I�P'�I I I W d II �� �III I I W U'�O �I � §1 r I I I I�• I �� Y I I d �� m I I � �� I � ¢N w �i ' �� _'.,�i i� ii �7 A� :ov$��i ! �� �i -�h � \ -- �i� i/ "I•II� I� I A � �i � �'���� � � � �� �� ' � �i do_ /' V � � �' �i � Q < ��� �� I I � � � �� � � �. �� ai i i /� / �. �>e� i �I/ � Z Z I - �- � � � ` I p O �� �� �� � � � I li � - �i�'� � � 1 ; , , �� � �� �� —��i � U i v �: / ,_ � ——— _— ���i W�' � — - __ i ` � �--- - - -------- � ° -- ` �'� � s�` Ii I— OVO?J�S3��tl03?JVHS \� _� ,� � � —` �._— __--G�-—�_��-_ '� _-___-,________ _ ______-�-_____�_-.-__ -__-� ' (� _, -- - ' �\ � �/ ��� � ' I lJJ Z � � ' �`�� (9� �� Q U - Z � � �O 0 0 � F z� PaoaerervuNe n & a. 0 O Z r� � � ecc90 3,�a o.00s �� � I� � � � �- --T- -�' I �, I �.�. � ' 1 I � � _\ �i� i .� /-I- , i„ i i R / � '„ . ' � I � � � A��. ` � _ i - i I - � ' � � I / A P' �N��'i �� -- — -� E� i �, i i . A� /��-� i� 'i � � ��� "0 1 i I i �' '� � � W^ i , `-1�� - i ``, �i' \—�� �� I I i � �r' �� l � 1_--_ I ��` � I __-` I I �� �` � F� � 1�I �I � i � � i p3 �i �� � ��„i'� .� � I ( 1r� - � �����II i i �� '� Y � F \ �o�, � � � � ��1 ; a Q ii � w o i i i�, l / �� F� � r r��r� o �r- � � m � � � �w I I � � .� �- _ T I � � W � r � II I . I ^ I / .. .f� / `� - w1 +I v I 3 W _ Z I i �� �� ��� � �rc� li 1� I�I��NJ � ' �'.. so' ��` i,� I s `�,ro U � � � °< �I I � � � �� � ���� 1 ��.. � _�� Q ;Q� � ; 'tl �� ' I �� o � � �� � � � � , �, ����,. � � � j ��m � � ,� � �� � i �i �����i �i� �i r� A , �i� 'I '`���� €Qa V � � '� '� _i o_- � � ) A ° i ' �li �� � I � � �i � i i g �� � \. �♦ ii ' - I/ A � i i �li i �i � � ,. x}�' . . I 11 � � i � �I�i �i � / �� �i � ��i� / \ ����� i � � � � I��� 1 � �" � � ) � r - � � _ �� �� I ' ���� ��,� - --- � __-��=� --��� � ��� _ _ _ ', �V '�-�, � �. ' � � avoa ssa��v aaavHs �� %i� � � ' "�-�_-`1�- � L_ � -- -�--- --- �—� � - --- —� T= ' � �� � ,� v � �I , I 0 - _ -oam � � � _ _ _ � R � _ g p -�am a, i_ a a o r� o c o �� J ' O __ _ - __ � _ w -i.-- x arc� � ww�.0 ��c� _oa 1 \/�I R ' " � a V m ^� z � ' O ' Q mww�.�.�.��„x_on�a� - __ U' � _ - J ' - __ O j"(� � � o � V G L � ��~ s �.�C i � L _ Q `>�J - o \� 0 o L N ^ � _ �� S - - n f•' � T'C v _ Z � a == a = - 'C a p � - - - _ _ - - - p > n m i m m m m Q U' n � s 7l o` � E :f� 'g x C a` i"l+ , E - � u c � O �- o m u o` `o.4 E 3 ` Q� C U - O a � u o — •� p v E - � Q _ O N a o C � - E 3 s _ E ; � a � $ a y�. Y ry O O � a v — - _ � N _- V `o_ o c p `�� E= W - 'G r a` i"L a o _ � � o - "L E � _ - a Y o g~ o Q� _ o ' c� Y a � � T"L c 3 v 3 _ o a , E v a` � �"L _ � o � Q z F -- - -- C' u u d � d o�~ o a�� W �, - - - i 3 _ �� _ a` v;3 - E E L � � 3�- E o �r C ,� - LL`s., Q'_ _ �� E 3 '- d¢ �9 r 'S '° �l�f zl�O m � > a .� m N co v m N p �o �o � in m co in in � � O c-I N c-I O N N c-I V pT N l�0 Ql lfl c�-I O Ql lfl � v LL N O O O O O c-I O O C S f�p L � l.fl CO fll CO N l.fl fll � m ?� .� m in m o � in m � N O O O O O O O O N co N � C L > m v � m o v � m � � a 0 V l.fl P!1 V c-I N I� V � O l.fl lD Ql lD lD CO Ql lD � c6 C � � � T ii O r�vl Q�i QNi CO �fl Q�i � U �' � N fYl � N N P!1 V N � � •� ei C 7 �p °' E 3 « � o o v in � m v in .� � C T � GO V1 I� I� N lD I� N Nc-1 c-I N c-I c-I N N c-I �� � q� u Q in VI [� N N [p v ~ C r`1 O � V �--� � m V m � � N @ � N c�-I � c�-I c^-I � � c�-I m U � �n U F � � +' � N ttl O � � � � � LL � � C c F v � a � �N 'i � c co m � o co � m o �n � w .N � � '� �i � � � � @ � c C N c-I ^ c-I .--i Ql lD c-I � m 3 in vr A C cc6 � cc6 V C L � C � C � � = V H � � M N M co `6 � `6 O +� � O " � l0 N lD N v L � � OJ � �N T � � � p � N m C U V1 Ln I� l.fl l.fl � (p � Q� Q �"� u � .Q- o 0 o ri 3 0 0 3 ro v � ,� � E � � E � � � o m `o + � `o „ � � � ^'y � o � a�i c c v « 0 E � y v v v v � al� ,� � a � � Q � � vi ~ � �' 3 3 3 3 — II °' — ii ii ii n x � � � � � � � � � � � � � d d U — ¢ n°'o — F H V Li c 10 � -� �' �y v V � u N �o p o y 'co '.� « Q � o 0 0 0\' o\' �� L 'a Q L 0 \ � •--i N � c-I O N N N � � � C O � ' O O > O c-I d d d -a LL � 2 N r`1 V �/1 p � L 0 � � � �� L �' O O O � 10 1.1 �w CO � CO l.fl " L m Ol y "" i"� Ql i"'� N N N N Y � � Y � O . � 0 O a « � O '� N � C Ol I� � V c0 ^ m V V � N L O • � N V1 O V1 0 Cl0 � a--I .-I � a--I c-I � � c-I G � � �� � E �, a.y+ F ..� � � v, o 0 0 �n o �,� o v � E E � � � � ti � � � 3 � � ' � � a, v f0 > — m � � � m « p� .� N m ci ci V m ci O � C � N � m uNi 'a � m �n .� fYl Ql f6 L P!1 � � P!1 C � �' O O O O � � � � O V � � � c�-I � � O O O � � O � � O C � J V •yf V � V �/ � N � � � N E � � Ll � � � C O (6 � 2 \ � w � N LL � � Q7 O ��n I� CO c-I CO Ql N N CO c6 � E c6 � C � w '� p M M l.fl f'�l N � l.fl f'�l a,.i y, -O C N � � Q- O O O O O O O O � C vi C � O 'u pj � co N � � cp a ,''""� vi O_ '� � � N v 7 O (j N � Q ] � N � O 'O v7 � Q1 T � L � a N � tD C.7 V � O = w. � V w N � C � w N .--. V v � Q" N N � C = �O c 'p o o v o N m v �m 3 � °c °' °4 Q- 3 ^ o °° � � � � o 0 0 0 0 0 0 0 � ti � � LL v o � m� �, o �, o J (n N � � = J �j � � II �� �I II � W. {I II II II � N � U U J N N Q,I � G d` V1 I O 1n Ql lD I� 00 «1 lD ci 00 � "" v � '+ C � � ? � � m � � � N o`�o � � cj II � c� II s � II a co 0 0 0 0 0 0 0 0 o F }� o � � a F; LL LL C �n � Q [O U � Q [O U � N N N � O � � m Z � N C �r � C N 'y� •O .-I N c-I N v °� a o � z ' 'i ______________'__—___ _L_i___ c.n�w nNc unun Nc1cs�. � T\ ,�,ry " 'pP OF FOUNOATiOry MUSi BE ni LEA51 6"�BOVE 1NE NiGNE51 GRaDE:URRO�JNDirvG�LL BUiLDirvG.. /y- -/�L------{ ------------� - �� --------r--t ------ �cac sr Pc a mrirnurn canoc oF s�nvu.r raou rHc Puior+r,s wrHi+*Hc rasr s ro o rccr w r,cNr rn rHc Rcsiocrvcc. �I' i ' � �_PROPERTYLINE/FUTIIRE E�T I ��I I RENIIRTMEM C � � Ei iHE M N MUM F 2%4No nreE NOi i0 BE�iEEVER iHAN 339('.) '�11 I'( I I I DR NG SiAT MO�FED SinTE PLA E. 0 REDUCE TO SiAIE PLPNE COORDNATES SCALE xr 0 a.s99)353) SAGECREEKROADROW i (1.00026a]0)ABOIIi ME I II I / \ i .5 0 E PINS �lER5ECT0�MONUMENiS nN�SEClION GORNERS D'>TURBED DURNG CONSTRUC 0 MUSi BE REFERENCED nND REPLaCED I III� � � "� ��ER T E 5 PERNS OJ OF A LCEJSED SURVEYOR. �I"I ' � I � I . CO 0 SHOWN SNPLL BE/ERFED Br THE CONIRaCiOR BEFORE nNv CONSiRUCTON OR OIHER uPROVEMENTS. � o I E 1UA COVER OVER WATER LNES 5 4.5 FT AND THE MA%MI.M COVER 5 5.5 FT UNLE55 OTHERWISE NOiE�N iHE FLFNS AN�APPROVE�BY II o/ ` �— I � � t .,.— E' ERUTLiv_ I � . '' � � � . �.� � 8. SEPARATON BEiWEEN PROPOSE�WAiER SERVCE AJD ALL OiHER DRY UiLtt LNES 5 0 FT. li / ` I'. I �y s � —_——�_„ r , � EmErvi P HMAftK �I�+� � �I �4" y II F I� � ` r, L I k L� i E�OUi�wE'>iiCORNEH OF qLLOW MPR LES W,.Y nPPRO%uniE�Y 50 FT WESi OF iHE NiEFSECTON OF W�OW SPRNGS WnY nN�T SBEF�NE I RO' 0' �0' 20' b' E EV 0. 358.8 FEET Ij� �� .o nc J / � ' �� / ~\� I�I / � P P���Er��s �E�.�A�oA.�M s�RRo��o��o�E�oPMEN.��A� �Ao��srEo oF.� � oR�n _ =T- —.� � — — __� ` , � « _ , e� ' I � / " '� cn�onrous. M Pre i W � �� �- — � i o R.couNs onr�M�v�R.xER .� � � M�PROR�n oF FORr�oLL�s o�r�M>s REo�REo Fo �.P�RP�E r� o��oN�,Eo�Aro�s il� '� � / `� I � I � I ,��I i �� � NGVD292UNADJl.STEDEDAiUhu(PROR Ctt OF FORi COLLNS DATUM) NAVD88 },�gR H011i➢6E lllE�_ \ / I a,vpe.v va�,e �� -1 sIXiEo�os��ine�ry r _�I � i i � ` PROPERiYPNS CEr10.0. � � . DR VnNG 5 AT MODFED^1AiE PL4NE.i0 REGUCE TO^iATE PLANE COGRDrv4iE5^C�LE 4T U.999I3332(i.00026615)ABGUT THE JRIG � p939 —\fi > > > � � �� . NTERSECiON MONUMENTS AND SECTUN CORNERS�SiURBED�UR NG^ONSiRUCiON MUST BE REFEREJCE�AND REPLN � I Y � TI 1 --- �F✓S�. J.DER THE SUPERv50N OF A L"ENSED SURVETOft LOTIE�COPY i0 OBTnN nLL lHE NFORunlION inni�n�AUE�E N I ��� �� j I / � ���-t ke � o _ w i � L JI THS A1.TOCPD�RAWNG CONTANS NFORMAiON iHAi 5 NOi VSBLE ON P� Co — � , 3 p . 393�6 m� iH S DRAN'NG,ALL iNE AVTOCAO LATERS MUST BE iVRrvEO ON AND iHFwEDE � � �� �om[2s. , I l � .- qi i � Iw / EUEUExr � "T To4, �W° a THE SZE nPE nND LOCnlION OF ALL KrvOwN IIN�ERGRO�N�uIILTES nRE nPPROX MATE WHEN SHOwN ON lHESE�RnWNCS i SHu�6E iHE . . _ � � . � - _ � �oicn� SS�ONP�F RESPONSBLTv OF ME CONiRACTOR TO VERFv THE EXSiENCE OF ALL JNCERGROJJD IiLPES J iHE fREf OF iHE NORK PEFORE fO��MENC NG NEw I� / Ci�ERGROU�D UPLTESNTRnCTOR SHALL BE RESPON56�E FOR�OCniNG uL�N�ERGRO�ND IIIILTES AN�SHALL 6E RESPO�SBLE FOR nLL urvKNOwN I � __ �Al__—�-� � yp,,�C I - /_----- � -- :'�W � � _____ ., •H�� � y - ' -<9J9. � .. ao ecr corv*ao��s*eo HeaeoN s aeov�oeo ns n couehsv. r s*Ne aespoNseutt oF*xe aecaetir*o veaiFr TMe Aceuancr oF rNe i -- __ --- - U . es nNo e�vnlons s�own vaoe 10 usNc TMEM roe nNv voavoses_ �� � - � � �_� Z� � ;�al � � — � � w� � 6. .NT LOT LNES R GHiS OF WAY OR EASEMENTS SHOWN ARE APPRO%MAiE PN�ARE NOT TO BE REIJED UPON FOR FUiURE MPROVEMENTS. /� J F w : ,� �FO �� II� \�/ / a � �/ii:. I� UWi-=oW LEGEND: i'° �- I LL�oNw i w� o� � ,,� , _ w� 1 -o� � � vreoPoseo coMvncreo reono a>se �...... � � .: x �N, ��. Y m�.��� i � a, - — I.� I .,`�—-x-�a�o•-� - � � O BERMOPiR Vn�Li I �GRAOING LIMIT9 . �\ � PROPoSED GRnvEL DRVEWnv iELEPHONE PEDESiAL � " \ ���� �{�' m F I Q'I � �/ ��k J I O. I rc I � ,aoFosEo���aE.E o A�ao. �. � - �.A � z� � `e 1 I � �a P�wER Po�E �.,n�i I �W � .�._ 1� ms, � E�Ea,a�ME,ER I �� � i � �1 � . �,�DS � �1 �= ceacosEo oovmsrour axo now oieEcnaa � v,.c,�eoz � _. � � �� �S -� e '� A� i _ � � �iaa caroN ve�+E IW / � ���-► ��� PRava�[o svor EiceanoN O4 saN Tnar MnrvHo� 1' II K L --;� i I � , �5,, `Q � �PROPERTV LINE �� iION �y WPiER SHUTOFF VFLVE I = _ o /) I � � ^= c acasEo no c v r menHr i � �s --��\I i "� ��_� E � c�o E � w. ee sv cor - 1�� �� I I • � ••9S � � � � � . exs.ncwnrEre.,ee��eE ea� ne�n�oE �I„ � .\ , � E:o wA.ER ME.ER �ii ; � i _,� ' <s.,. � -I i-1e-r \ � exsrNc uc cns serevice ° `s ' � STEEL POSi 'I � � i _ IXSiNG lIG ELECiRCAL SERVCE � W ' ��` � �� ti '- � �I Jsr PRoaeRry�we/ �I. �/ � �'-�` � /i r I \ � ,� exs.Nc oveRHeao E�c.ac�NE �oceouousJraee I < � � . . EXSnNG FE�cE +j�(E coNFEre0�5 mEE :, i � '�I �� �� ` Q O � ��A��NK FEN� g s�R�e � �,� I O Z a �, i I �� ° 0� � � o � rREE s.�MP i'��� � ` ' � ^� f _ � r i � � a oa I GRAOINGLIMRS Q -� Fa[a ovic�ocni[ �FErvGE GnTE I � a'�� � / . _��Y 5 AREAOFDI6TURBANCE-O.BAGRE J O ` po ---�- ExiSiiNG FLOW uNE � SiGN _ � �/� I 1' �� `� � I \ w a � EqSiiN�PIPE 0 CONTROL POINT �F^'Frvr � _ �,.,,i� e�� L 'R S� r v i � EocE ar nsvxnir i � ° \�_ % U Z Z rE�r �� Ar - i��� � -""F. -- - ` � 0 � �� �- � � � z.a_,E �.. ,n � -'/v �� W Q O ii�l i �_k,. f �-_�.7�--� - Y p� c� � �. . . � o C'3 � .E, ABBREVIATION LEGEND: �, �� ' �� "'.�; , �� O O \ aE I KEGHTER ROAD ROW � LL EasiNo�aoiNo.�a�,..re s � �< �� �� �"� � / � N c ,a . - E..��a aE �c�wo x�� o o I. •:,, PEa�.�nP�� WHoa.c �coNcrecrc ., �.�.�,N 3' �n n ��a �� � � eo�so.v+o��.c x Exs*Hc �- � � wa1 coLLns�ove�wo wA1ea osraa �� G F N S ED 6FADE s� � � 1 � � . d .xn ` . , ___ �_ _ - -- __ _ __ 0 F�BERLNE 1 I z ,aa i r_ �- --- � ... _/ I .. FS FNSHEO SIIRFACE� ) � / e . x GB GRADE BREAK ' � fi� � ���� _ 0'� xP HeH corvr � -�� - — � �— ` . .. /" '� .; � 5 r ��<o.,, as�<mn��.=�����: �ss e �r I I M�r r onE ovcaHEno E�Eciac ' � \ � L_ ��_ � � — —— �.-� ______ � AuiHOR tt _ I I _ _�� — __ PFn POVDRE FRE � — — - � P�REA POVDRE VALLET RURnL ELECiRC n550Cn�N , I I ———� �`�' � � - ROW RGni OF WAY .-3t-�". � -—— � � '.f- . __ EET � �� ��oER���No — - — _ , , �— �— �;— - _— -' „b�o�. 1 OF 1 � _ �____ —_. Calleemreyaag. KECHTER ROAD