06482745 - BEAVER CREEK AT VALLEY SPRINGS, SD Streamflow potentially affected by regulation1 - No Location.-- latitude 43o35'10" longtitude 96o28'20" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1986-04-02 17:30 73.0 Not Determined 2 1986-09-17 12:45 759.0 No 3 1986-10-20 13:30 55.5 Not Determined 4 1987-03-23 14:00 446.0 No 5 1987-05-28 13:00 50.9 Not Determined 7 1988-05-18 13:45 15.1 Not Determined 8 1988-07-21 12:00 3.4 Yes 9 1989-03-24 11:05 140.0 No 10 1990-07-19 12:35 170.0 No 11 1992-03-02 13:20 120.0 No 12 1992-07-03 8:13 811.0 No 13 1993-03-29 14:55 903.0 No 14 1993-03-30 9:00 440.0 No 15 1993-06-29 17:55 325.0 No 16 2001-03-28 13:11 66.0 Not Determined Notes: 1 Regulation includes human influences on streamflow from causes such as hydropower, reservoirs, water supplies, or wastewater discharges. 2 Base flow is defined as a period of at least 10-14 days without precipitation that produces detectable runoff.