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HomeMy WebLinkAboutDrainage Reports - 07/25/2022City of Fort Collins Approved Plans Approved by: Date: Digitally signed by Megan L Keefe Reason: I attest to the accuracy and integrity of this document Date: 2021.06.02 17:11:58-06'00' RS RS RS RS KECHTER ROAD CENTERLINE 4 O F 1 1 LO T 2 4. 0 1 1 A C R E S LO T 1 2. 3 8 5 A C R E S FORT COLLINS, COLORADO SH E E T KEEFE CIVIL, INC 3125 CROCKETT STREET FORT COLLINS, CO 80526 (970) 215-6808 MEG@KEEFECIVIL.COM LOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OF LOT 5, BLEHM SUBDIVISION UTILITY PLANS GRADING & EROSION CONTROL PLAN MATCHLINE - SEE SHEET 5 AB B R E V I A T I O N L E G E N D : LE G E N D : BM P C O N T R O L S : SF SP VT C PS PS CW A VT C SF RS BM P 1 BM P 1 BM P 1 PS PS RS RS RS RS FORT COLLINS, COLORADO SH E E T KEEFE CIVIL, INC 3125 CROCKETT STREET FORT COLLINS, CO 80526 (970) 215-6808 MEG@KEEFECIVIL.COM LOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OF LOT 5, BLEHM SUBDIVISION UTILITY PLANS 5 O F 1 1 LO T 2 4. 0 1 1 A C R E S SWEETWATER CREEK DRIVE GRADING & EROSION CONTROL PLAN AB B R E V I A T I O N L E G E N D : LE G E N D : MATCHLINE - SEE SHEET 4 BM P C O N T R O L S : SF SP VT C PS PS CW A PS PS SF SP CW A SP CW A RS PS PS 1 O F 1 SWEETWATER CREEK DRIVE FORT COLLINS, COLORADO SH E E T KEEFE CIVIL, INC 3125 CROCKETT STREET FORT COLLINS, CO 80526 (970) 215-6808 MEG@KEEFECIVIL.COM FO R T C O L L I N S - L O V E L A N D WA T E R D I S T R I C T SO U T H F O R T C O L L I N S SA N I T A T I O N D I S T R I C T Mr . C h r i s M a t k i n s , D i s t r i c t M a n a g e r D a t e Al l c h a n g e s , a d d e n d u m s , a d d i t i o n s , d e l e t i o n s a n d mo d i f i c a t i o n s t o t h e s e d r a w i n g s m u s t b e a p p r o v e d , in w r i t i n g , b y t h e F o r t C o l l i n s - L o v e l a n d Wa t e r D i s t r i c t a n d t h e S o u t h F o r t C o l l i n s S a n i t a t i o n D i s t r i c t . LOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OF LOT 5, BLEHM SUBDIVISION UTILITY PLANS HISTORIC DRAINAGE EXHIBIT LE G E N D : FO R D R A I N A G E R E V I E W O N L Y NO T F O R C O N S T R U C T I O N FUTURE SAGE CREEK ROAD KECHTER ROAD 1 1 2 FORT COLLINS, COLORADO SH E E T KEEFE CIVIL, INC 3125 CROCKETT STREET FORT COLLINS, CO 80526 (970) 215-6808 MEG@KEEFECIVIL.COM LOT 2, BLEHM SUBDIVISION 2ND FILING, BEING A REPLAT OF LOT 5, BLEHM SUBDIVISION UTILITY PLANS 8 O F 1 1 LO T 2 4. 0 1 1 A C R E S SWEETWATER CREEK DRIVE DRAINAGE EXHIBIT LE G E N D : FO R D R A I N A G E R E V I E W O N L Y NO T F O R C O N S T R U C T I O N LO T 1 FUTURE SAGE CREEK ROAD 2 1 1 3 BL E H M S U B D I V I S I O N L O T 6 BL E H M S U B D I V I S I O N L O T 4 This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA This unofficial copy was downloaded on Aug-11-2020 from the City of Fort Collins Public Records Website: http://citydocs.fcgov.com For additional information or an official copy, please contact City of Fort Collins Utilities 700 Wood Street Fort Collins, CO 80524 USA Co m p o s i t e R u n o f f C o e f f i c i e n t C a l c u l a t i o n s 24 0 0 K e c h t e r R o a d , F o r t C o l l i n s , C O Ar e a ( s f ) Mi n o r ( 2 - a n d 10 - y r ) Co m p o s i t e C 2 Ma j o r ( 1 0 0 - y r ) Co m p o s i t e C 3 Ar e a ( s f ) Mi n o r ( 2 - a n d 10 - y r ) Co m p o s i t e C 2 Ma j o r ( 1 0 0 - y r ) Co m p o s i t e C 3 Ar e a ( s f ) Mi n o r ( 2 - a n d 10 - y r ) Co m p o s i t e C 2 Ma j o r ( 1 0 0 - y r ) Co m p o s i t e C 3 Ar e a ( s f ) Mi n o r ( 2 - a n d 10 - y r ) Co m p o s i t e C 2 Ma j o r ( 1 0 0 - y r ) Co m p o s i t e C 3 Ar e a ( s f ) Mi n o r ( 2 - a n d 10 - y r ) Co m p o s i t e C 2 Ma j o r ( 1 0 0 - y r ) Co m p o s i t e C 3 Ha r d s c a p e o r H a r d S u r f a c e Co n c r e t e 0. 9 5 67 5 8 4 5 2 , 8 2 5 0 1 1 0 Ro o f t o p 0. 9 5 6, 3 1 0 2 , 3 8 0 8 , 1 6 9 8 , 5 4 5 2 , 1 8 5 Gr a v e l D r i v e w a y 0. 5 0 7, 7 0 0 0 1 5 , 4 3 0 1 , 1 5 0 8 , 2 7 0 To t a l I m p e r v i o u s A r e a 14 , 6 8 5 3 , 2 2 5 2 6 , 4 2 4 9 , 6 9 5 1 0 , 5 6 5 La n d s c a p e o r P e r v i o u s S u r f a c e La w n s , C l a y e y S o i l , A v e r a g e S l o p e 2 - 7 % 0 . 1 5 0 0 0 3 , 4 0 0 4 , 8 7 5 Un d e v e l o p e d Gr e e n b e l t s , A g r i c u l t u r e 0 . 2 0 2 4 2 , 7 7 0 1 7 6 , 6 0 0 1 3 1 , 5 1 1 2 4 1 , 8 8 0 2 4 , 9 1 0 To t a l 2 5 7 , 4 5 5 0 . 2 3 0 . 2 9 1 7 9 , 8 2 5 0 . 2 1 0 . 2 7 1 5 7 , 9 3 5 0 . 2 8 0 . 3 5 2 5 4 , 9 7 5 0 . 2 3 0 . 2 8 4 0 , 3 5 0 0 . 3 0 0 . 3 7 No t e s : 3. F r e q u e n c y a d j u s t m e n t f a c t o r p e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l T a b l e 3 . 2 - 3 . 1. R u n o f f c o e f f i c i e n t s p e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l T a b l e 3 . 2 - 2 . 2. C o m p o s i t e r u n o f f c o e f f i c i e n t p e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l E q u a t i o n 5 - 1 . Su r f a c e T y p e Ru n o f f Co e f f i c i e n t s 1 Hi s t o r i c D r a i n a g e B a s i n H 1 Hi s t o r i c D r a i n a g e B a s i n H 2 De v e l o p e d D r a i n a g e B a s i n C De v e l o p e d D r a i n a g e B a s i n A De v e l o p e d D r a i n a g e B a s i n B 24 0 0 K e c h t e r R o a d - d r a i n a g e . x l s x Dr a i n a g e B a s i n R u n o f f C a l c u l a t i o n s 2 4 0 0 K e c h t e r , F o r t C o l l i n s , C O Le n g t h (f t ) Sl o p e (% ) Mi n o r t o (m i n ) Ma j o r t o (m i n ) Le n g t h (f t ) Sl o p e (% ) Ch a n n e l Ty p e Ve l o c i t y (f p s ) tt (m i n ) Mi n o r T c (m i n ) Ma j o r T c (m i n ) 2- y r 1 0 - y r 1 0 0 - y r 2 - y r 1 0 - y r 10 0 - y r 1 H 1 5 . 9 1 0 0 . 2 3 0 . 2 9 2 4 0 1 2 5 . 2 2 3 . 6 4 0 0 1 % s w a l e 1 . 5 4 . 4 2 9 . 7 2 8 . 0 1 . 3 1 2 . 2 3 4 . 6 9 1 . 7 7 3 . 0 2 7 . 9 5 2 H 2 4 . 1 2 8 0 . 2 1 0 . 2 7 2 3 0 1 2 5 . 1 2 3 . 6 4 7 5 1 % s w a l e 1 . 5 5 . 3 3 0 . 4 2 8 . 9 1 . 2 9 2 . 1 9 4 . 6 1 1 . 7 5 2 . 9 7 5 . 0 8 1 A 3 . 6 2 6 0 . 2 8 0 . 3 5 1 2 0 1 1 6 . 8 1 5 . 3 4 0 0 1 % s w a l e 1 . 5 4 . 4 2 1 . 2 1 9 . 8 1 . 5 5 2 . 6 6 5 . 6 5 1 . 5 9 2 . 7 1 7 . 2 0 2 B 5 . 8 5 3 0 . 2 3 0 . 2 8 2 4 0 1 2 5 . 3 2 3 . 7 4 0 0 1 % s w a l e 1 . 5 4 . 4 2 9 . 8 2 8 . 1 1 . 3 1 2 . 2 2 4 . 6 8 1 . 3 3 2 . 2 7 7 . 7 3 3 C 0 . 9 2 6 0 . 3 0 0 . 3 7 2 3 0 1 2 2 . 7 2 0 . 6 4 7 5 1 % s w a l e 1 . 5 5 . 3 2 8 . 0 2 5 . 9 1 . 3 4 2 . 2 9 4 . 8 8 0 . 3 7 0 . 6 3 1 . 6 8 No t e s : No t e s : 2. P e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l S e c t i o n 3 . 3 . 3 . In i t i a l / O v e r l a n d T i m e 1 Tr a v e l T i m e 2 Hi s t o r i c De v e l o p e d Fi n a l T c3 In t e n s i t y ( i n / h r ) 4 Ba s i n Ar e a (a c r e s ) Mi n o r Co m p o s i t e C Ma j o r Co m p o s i t e C Ba s i n F l o w ( c f s ) 5 5. P e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l E q u a t i o n 5 - 1 . De s i g n Po i n t 3. P e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l S e c t i o n 3 . 3 . 4 . A m i n i m u m T c o f 5 m i n u t e s i s r e q u i r e d . 4. P e r I D F T a b l e f o r R a t i o n a l M e t h o d , T a b l e 3 . 4 - 1 F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l . 1. P e r F o r t C o l l i n s S t o r m w a t e r C r i t e r i a M a n u a l S e c t i o n 3 . 3 . 2 . 24 0 0 K e c h t e r R o a d - d r a i n a g e . x l s x