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Two Rivers Gravel Pit Mine <br /> Riverside Berm Failure Analysis <br /> and Flood Control Mitigation Plan <br /> ' ' ' January 22,2020 <br /> TWO RIVERS <br /> FILL TIME ESTIMATES <br /> NORTHWEST FIELD <br /> Inc GW Inflow Rate- GW Inflow Rate- River Inflow- Cummulative <br /> Pit Depth Pit Elev Pit Vol GW Inflow Rate HG Time River Inflow Total Inflow Inflow Volume Elevation <br /> Volume Ave Ave Ave Inflow Volume <br /> (af) (af) (af/day) (af/day) (af/hr) (hr) (cfs) (af/hr) of/hr (af) (af) (ft) <br /> (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (14) (15) <br /> 0 4685.0 1,648 0 459 5,158 215 48 6,300 520 735 8,824 16,524 <br /> 10 4675.0 1000 648 2,633 5,158 215 36 5,167 427 642 7,701 12,393 <br /> 20 4665.0 500 500 4,443 5,158 215 24 4,500 372 587 4,693 7,734 <br /> 25 4660.0 125 375 6,252 5,158 215 16 2,000 165 380 3,041 5,091 <br /> 30 4655.0 0 125 9,858 5,158 215 8 500 41 256 2,050 3,350 <br /> 4 167 14 1300 1800 <br /> 3 1500 4684 Interpc <br /> 2 500 500 4665 Interpc <br /> 1 250 250 4663 Interpc <br /> 0 0 0 0 0 4655 Pit bot <br /> pg. 32 <br />