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JD -6 Mine - Drainage Design Plan 34 <br />Table 17. Peak Flow (cfs) and Peak Time (hr) by Rainf all Return Period <br />Sub -Area <br />10 -Yr <br />25 -Yr <br />50 -Yr <br />100 -Yr <br />or Reach <br />(cfs) <br />(cfs) <br />(cfs) <br />(cfs) <br />(hr) <br />/-hr) <br />(hr) <br />(hr) <br />SUBAREAS <br />N -A <br />19.40 <br />34.13 <br />46.64 <br />60.11 <br />12.04 <br />12.02 <br />12.02 <br />12.02 <br />N- B+C +tri <br />0.79 <br />1.35 <br />1.83 <br />2.38 <br />12.02 <br />12.01 <br />11.96 <br />11.96 <br />N -D +tri <br />0.41 <br />0.69 <br />0.95 <br />1.23 <br />12.02 <br />12.01 <br />11.95 <br />11.95 <br />N -E <br />0.64 <br />1.05 <br />1.44 <br />1.85 <br />12.02 <br />11.96 <br />11.95 <br />11.94 <br />N -F <br />0.97 <br />1.58 <br />2.12 <br />2.70 <br />12.02 <br />11.95 <br />11.94 <br />11.94 <br />N -H <br />0.20 <br />0.32 <br />0.42 <br />0.53 <br />12.01 <br />11.95 <br />11.94 <br />11.94 <br />N -I <br />0.31 <br />0.51 <br />0.70 <br />0.90 <br />12.02 <br />11.96 <br />11.95 <br />11.94 <br />N -J <br />0.69 <br />1.02 <br />1.29 <br />1.57 <br />11.97 <br />11.96 <br />11.96 <br />11.96 <br />MFA <br />3.03 <br />4.22 <br />5.16 <br />6.12 <br />12.04 <br />12.04 <br />12.03 <br />12.03 <br />REACHES <br />UDS <br />20.15 <br />35.45 <br />48.44 <br />62.40 <br />12.04 <br />12.03 <br />12.02 <br />12.01 <br />Down <br />20.12 <br />35.42 <br />48.42 <br />62.38 <br />Out 1 <br />12.06 <br />12.05 <br />12.04 <br />12.03 <br />MDS <br />0.41 <br />0.69 <br />0.95 <br />1.23 <br />12.02 <br />12.01 <br />11.95 <br />11.95 <br />Down <br />0.41 <br />0.69 <br />0.95 <br />1.23 <br />Out 2 <br />12.04 <br />12.03 <br />11.97 <br />11.97 <br />LDS -E <br />0.64 <br />1.05 <br />1.44 <br />1.85 <br />12.02 <br />11.96 <br />11.95 <br />11.94 <br />Down <br />0.64 <br />1.05 <br />1.44 <br />1.85 <br />Out 3 <br />12.03 <br />11.96 <br />11.96 <br />11.96 <br />LDS -N <br />0.97 <br />1.58 <br />2.12 <br />2.70 <br />12.02 <br />11.95 <br />11.94 <br />11.94 <br />Down <br />0.96 <br />1.58 <br />2.12 <br />2.70 <br />12.03 <br />11.97 <br />11.96 <br />11.96 <br />NJR <br />0.20 <br />0.32 <br />0.42 <br />0.53 <br />1201 <br />11.95 <br />11.94 <br />11.94 <br />Down <br />0.20 <br />0.32 <br />0.42 <br />0.53 <br />11.89 <br />11.97 <br />11.96 <br />11.96 <br />SWRP -Inl <br />0.20 <br />0.32 <br />0.42 <br />0.53 <br />11.89 <br />11.97 <br />11.96 <br />11.96 <br />Down <br />0.20 <br />0.32 <br />0.42 <br />0.53 <br />12.03 <br />11.97 <br />11.96 <br />11.96 <br />SWRP -In2 <br />1.94 <br />3.11 <br />4.11 <br />5.16 <br />12.02 <br />11.97 <br />11.96 <br />11.96 <br />Down <br />1.94 <br />3.11 <br />4.11 <br />5.16 <br />12.02 <br />11.97 <br />11.96 <br />11.96 <br />SWRP -Inlet <br />5.15 <br />7.55 <br />9.46 <br />11.46 <br />12.03 <br />12.02 <br />12.02 <br />12.01 <br />Down <br />4.83 <br />7.14 <br />9 <br />11.28 <br />Out 4 <br />12.07 <br />12.06 <br />12.06 <br />12.04 <br />Note: Each channel is modeled as one reach, with all runoff assumed to arrive at the upstream end (first line of values) and exiting the <br />downstream end (second line of values). Differences in flow rate or time between the upstream and downstream values for each reach <br />result from flow /transport time within the channel. <br />4148A.131028 Whetstone Associates <br />