05337010 - GRINDSTONE RIVER NEAR HINCKLEY, MN Streamflow potentially affected by regulation1 - No Location.-- latitude 46o00'40" longtitude 92o52'37" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1967-09-07 9:15 6.59 Not Determined 2 1970-05-19 13:50 35.8 Yes 3 1974-09-19 15:30 19.2 Yes 4 1975-10-02 Not Available 10.9 Yes 5 1976-09-15 12:04 5.76 Not Determined 6 1980-05-29 9:39 14.2 Not Determined 7 2006-07-13 08:30 7.95 Yes 8 2006-09-08 08:15 6.33 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.