8925 AIRPORT RD MUKILTEO SCHOOL DISTRICT 2018-01-02 MF Import

, ,� . _ . MUKILTEO SCHOOL DISTRICT �i ENTRAL FACILITY �T �P, DETENTION STORAGE CALCULATIO�NS LSA No. 2337 . llepartment of Fisheries Storm a'- r Release Criteria HASIN ID: 25F NAME: 25-YR DEVEL ED SBUH METHODOLOGY .<_-�^_��s TOTAL AREA• • • • • • • � BASEFLOWS: 0.00 cfs RAINFALL TYPE. . . . : TYPElA RVIOUS AREA PRECIPITATION. . . . : 2.50 inches A. . : 0.00 Acres TIME INTERVAL. . . . : 10.00 min CN. . . : 86.00 TIME OF CONC. . . . . : 8.92 min IMPERVIOUS AR --- ABSTRACTZON COEFF: 0.20 ��+• • � 5.35 � . CN. . . . 97.70 TcReach - Shaet L: 200.00 ns:0.0110 p2yr: . 1.40 s:0.0050 TCReach - Channel L: 300.00 kc:21.00 s:0.0050 pEAIC RATE: 2.66 cfs VOL: 1.00 Ac-ft TIME: 480 min BASIN ID: 25F-B NAME: 25-YR DRAINING TO CLOSED DEPRESSIONS SBUH METHODOLOGY TOTAL AREA• • • • • • • � •60 Ac _ BASEFIAW�: 0.00 cfs RAINFALL TYPE. . . . : A VZOUS AREA PRECIPITATION. . . . : 2.50 inches 1__�� 0.00 Acres TIME INTERVAL. . . . : 10.00 min CN. . . . . 86.00 TIME OF CONC. . . . . : 8.92 min ZMPERVIOUS ( 8. ABSTRACTION COEFF: 0.20 AREA. . : 0.45 res CN. . . . : 9 00 TcReach - Sheet L: 200.00 ns:0.0110 p2yr: 1.40 s:0.0050 TcReach - Channel L: 300.00 kc:21.00 s:0.0050 PEAK RATE: 0.23 cfs VOL: 0.09 Ac-ft TIME: 480 min HYDROGRAPH SUMMARY p� TIME VOLUME Contrib HYD RUNOFF OF OF � RATE PEAK HYDRO Area cfs min. cf-AcFt Acres ______=________________________________-- --- 1 0.058 1470 8267 cf 5.50 2 0.532 920 27289 cf 5.50 LEVEL POOL TABLE SUNAfARY ' MATCH INFLOW -STO- -DIS- <-PEAK-> STORAGE i <----DESCRIPTION-----> (cfs) (cfs) --id- �-id- <-STAGE> id VOL (cf) 2-YR. . . . . . . . . . . . . . . . .===0.11===1.29 POND ====0===567.78 1 19032.74 25-YR. . . . . . . . . . . . . . . . 0.58 2.66 POND O 568.30 2 22693.36 Page 7 r11e: \1\3Dn.001.