05373290 - SOUTH BRANCH MIDDLE FORK ZUMBRO R NR ORONOCO, MN Streamflow potentially affected by regulation1 - No Location.-- latitude 44o08'35" longtitude 92o35'51" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1969-09-23 8:25 18.8 Not Determined 2 1970-06-05 11:24 156 Not Determined 3 1970-08-19 Not Available 17.1 Not Determined 4 1971-08-11 Not Available 26.8 Not Determined 5 1974-09-25 11:15 28.3 Not Determined 6 1976-09-30 14:05 7.56 Yes 7 1977-09-19 14:05 7.43 Yes 8 1985-08-02 12:06 20.8 Not Determined 9 1988-06-24 15:10 30.5 Not Determined 10 1988-08-29 Not Available 12.3 Not Determined 11 2011-10-07 09:00 30.4 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.