Draft EIS_072312.pdf - Middle Fork American River Project ...

71
Exceedances
and
Summary
Statistics
Flow (cfs) 1975–2007
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep
50% 7.0 11.2 27.6 62.5 81.0 118.6 105.6 58.5 28.4 12.4 6.9 5.3
80% 3.0 6.9 11.7 15.1 33.3 60.8 44.7 28.8 12.2 5.5 2.6 2.1
Average 8.4 28.1 101.3 141.6 188.0 185.9 170.3 117.3 42.3 15.9 7.6 5.8
Max 261.0 1,251.4 7,547.0 5,002.2 8,972.1 2,771.6 2,357.5 2,038.7 386.8 207.6 25.3 54.1
Min 0.3 1.3 2.8 3.1 3.6 8.0 4.7 6.9 2.3 0.3 0.1 0.2
Rubicon River—Below Hell Hole Reservoir (540.832)
Large Bypass Rivers
20% 30.6 23.0 22.0 17.0 20.0 21.0 21.0 25.0 25.0 23.0 23.0 23.0
50% 22.0 22.0 15.0 13.0 14.0 15.0 15.0 21.0 22.0 22.0 22.0 22.0
80% 10.0 14.0 12.0 12.0 12.0 12.0 13.0 14.0 20.0 18.0 11.0 11.0
Average 23.8 19.6 25.9 65.0 20.9 30.5 20.7 105.0 107.4 43.3 18.6 21.1
Max 69.0 55.0 4,350.0 17,100.0 1,190.0 6,650.0 557.0 8,720.0 1,950.0 1,350.0 31.0 66.0
Min 4.3 6.5 5.6 5.9 6.1 5.9 7.7 7.7 0.3 6.5 6.5 5.9
Rubicon River—Below South Fork Rubicon River (834.836)
20% 52.0 45.0 71.5 147.2 187.8 225.4 203.5 186.9 85.7 55.4 47.2 47.2
50% 43.7 38.5 41.0 57.5 83.9 120.8 107.0 73.8 58.3 43.2 37.7 39.0
80% 28.6 31.8 30.7 31.0 42.0 68.1 55.9 46.2 39.1 33.1 28.7 26.9
Average 43.5 57.7 118.3 206.6 181.8 185.9 150.7 208.8 159.0 68.1 37.1 38.8
Max 570.8 3,354.5 9,413.1 27,559.9 11,308.5 10,627.9 2,662.3 12,194.1 2,349.8 1,512.7 63.2 188.2
Min 9.2 10.8 13.0 15.4 15.1 15.2 13.3 14.8 12.2 8.8 8.3 8.3