05227480 - RIPPLE RIVER AT AITKIN, MN Streamflow potentially affected by regulation1 - No Location.-- latitude 46o31'47" longtitude 93o42'26" Measure number Date Time Discharge, in ft^3;/s Base Flow2 1 1964-06-07 Not Available 40.6 Yes 2 1964-07-14 Not Available 16.9 Yes 3 1964-08-10 Not Available 27.7 Yes 4 1965-06-11 Not Available 385.0 No 5 1965-08-26 Not Available 37.1 Yes 6 1970-08-05 Not Available 6.95 Not Determined 7 1971-08-09 13:15 20.6 Yes 8 1973-08-28 Not Available 96.7 Not Determined 9 1975-08-11 16:05 65.9 Yes 10 1976-06-02 9:40 3.48 Yes 11 1976-08-02 16:25 5.71 Yes 12 1976-09-02 15:50 1.16 Yes 13 1979-04-30 15:00 410.0 Yes 14 1979-10-15 15:20 19.8 Yes 15 1980-05-13 9:30 36.3 Yes 16 1987-06-18 13:35 18.9 No 17 1988-06-02 9:00 18.6 Not Determined 18 1988-07-06 11:40 3.1 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.