05316950 - COTTONWOOD RIVER NEAR SPRINGFIELD, MN Streamflow potentially affected by regulation1 - No Location.-- latitude 44o12'12" longtitude 95o02'53" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1969-04-05 17:20 7060.0 No 2 1969-04-08 11:15 18300.0 No 3 1969-04-13 14:20 5340.0 No 4 1971-03-16 16:00 2340.0 No 5 1973-03-16 11:35 1400.0 No 6 1973-03-27 10:35 489.0 No 7 1973-04-24 15:40 278.0 No 8 1975-04-14 13:00 1060.0 No 9 1975-04-18 15:10 2020.0 No 10 1976-02-19 11:30 205.0 No 11 1977-03-12 11:35 1090.0 No 11A 1978-03-22 13:40 1860.0 No 12 1979-03-21 14:00 1450.0 No 13 1979-03-23 13:45 3290.0 No 14 1979-04-03 15:15 2580.0 No 15 1979-05-11 15:20 1650.0 No 16 1980-03-20 15:15 1280.0 No 17 1980-05-27 10:45 1450.0 No 18 1983-03-03 10:10 1960.0 No 19 1983-03-08 12:50 3640.0 No 20 1983-04-04 13:00 3320.0 No 21 1983-05-08 12:45 7140.0 No 22 1984-03-30 12:33 3650.0 No 23 1985-03-19 14:55 1810.0 No 24 1986-04-29 12:10 6170.0 No 25 1988-08-29 14:05 3.18 Yes 26 1990-04-12 10:55 32.5 Not Determined 27 1991-04-16 10:00 867.0 No 28 1991-06-05 11:55 2650.0 No 29 1992-03-01 13:00 1460.0 No 30 1996-04-04 16:25 1020.0 No 31 1997-03-27 7:55 6190.0 No 32 1998-04-01 9:21 3430.0 No 33 1998-05-28 8:55 238.0 No 34 2000-10-05 11:01 7.38 Yes 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.