05373850 - NORTH FORK ZUMBRO RIVER AT MAZEPPA, MN Streamflow potentially affected by regulation1 - No Location.-- latitude 44o16'00" longtitude 92o32'58" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1969-09-23 11:50 33.8 Yes 2 1970-06-05 14:45 135.0 No 3 1971-08-12 Not Available 37.2 Yes 4 1974-09-06 8:10 38.9 Yes 5 1976-10-14 18:40 26.7 Yes 6 1977-09-19 10:20 41.0 Yes 7 1980-05-06 14:10 82.0 Not Determined 8 1984-08-30 11:52 48.3 Not Determined 9 1985-08-02 16:26 30.1 Not Determined 10 1988-06-29 10:50 32.0 Yes 11 1996-07-26 10:05 50.9 Yes 12 2011-10-06 09:08 53.8 Yes 13 2013-09-11 11:11 2.61 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.