New 1991-2020 Averages being used this year.
![]() | Prepared by T.Grout, P. Miller NOAA, National Weather Service Colorado Basin River Forecast Center Salt Lake City, Utah www.cbrfc.noaa.gov |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Median | 30% Exceedance Volume | 10% Exceedance Volume | |
Salt | |||||||
Roosevelt, Nr | January-May | 97 | 125 | 143 | 57 | 205 | 300 |
February-May | 64 | 92 | 110 | 49 | 173 | 265 | |
Tonto Ck | |||||||
Roosevelt, Nr, Gun Ck, Abv | January-May | 23 | 24 | 27 | 69 | 47 | 93 |
February-May | 2.6 | 3.7 | 6.8 | 22 | 27 | 73 | |
Verde | |||||||
Tangle Ck, Blo, Horseshoe Dam, Abv | January-May | 55 | 66 | 79 | 51 | 108 | 205 |
February-May | 30 | 41 | 54 | 47 | 83 | 178 |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Median | 30% Exceedance Volume | 10% Exceedance Volume | |
Gila | |||||||
Gila, Nr | January-May | 15.7 | 16 | 17.2 | 33 | 22 | 35 |
February-May | 11 | 11.3 | 12.5 | 28 | 17.7 | 30 | |
Virden, Nr, Blue Ck, Blo | January-May | 17.5 | 18 | 20 | 31 | 28 | 47 |
February-May | 12.5 | 13 | 15.3 | 28 | 23 | 42 | |
Solomon, Nr, Head Of Safford Vly | January-May | 37 | 39 | 43 | 41 | 71 | 101 |
February-May | 24 | 26 | 30 | 32 | 58 | 88 | |
San Carlos Reservoir, Coolidge Dam, At | January-May | 32 | 32 | 34 | 47 | 64 | 103 |
February-May | 14.6 | 15 | 17.2 | 30 | 47 | 86 | |
San Francisco | |||||||
Glenwood, Nr | January-May | 6.3 | 6.4 | 6.9 | 37 | 10.4 | 16.2 |
February-May | 4.5 | 4.6 | 5.1 | 34 | 8.6 | 14.4 | |
Clifton | January-May | 18 | 18.5 | 20 | 45 | 29 | 48 |
February-May | 10.4 | 10.9 | 12.8 | 32 | 21 | 40 |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Median | 30% Exceedance Volume | 10% Exceedance Volume | |
Little Colorado | |||||||
Lyman Lk, Abv, St. Johns, Nr | January-June | 1.5 | 1.8 | 2.2 | 37 | 2.7 | 5.2 |
February-June | 1.3 | 1.6 | 2 | 36 | 2.5 | 5 | |
Zuni | |||||||
Black Rock Res, Abv | January-May | 0.01 | 0.07 | 0.1 | 77 | 0.3 | 0.91 |
February-May | 0.01 | 0.07 | 0.1 | 100 | 0.3 | 0.91 | |
Chevelon Ck | |||||||
Winslow, Nr, Wildcat Cyn, Blo | January-May | 2.6 | 3.5 | 6.1 | 44 | 11.2 | 25 |
February-May | 2 | 2.9 | 5.5 | 40 | 10.6 | 24 |
EOM Contents | Percent EOM Average | Percent Usable Capacity | Last Year EOM | Last Year %Average | EOM Average | Usable Capacity | |
Salt | |||||||
Roosevelt | 1164.7 | 129 | 70 | 1332.2 | 148 | 901.4 | 1653.0 |
Horse Mesa | 235.7 | 106 | 96 | 223.2 | 101 | 222.0 | 245.1 |
Mormon Flat | 54.6 | 100 | 94 | 54.8 | 101 | 54.5 | 57.9 |
Stewart Mountain | 64.1 | 103 | 92 | 64.2 | 103 | 62.2 | 69.8 |
Horseshoe | 21.3 | 57 | 19 | 6.0 | 16 | 37.6 | 109.2 |
Bartlett | 99.1 | 85 | 56 | 85.0 | 73 | 116.8 | 178.2 |
| |||||||
TOTAL | 1639.6 | 118 | 71 | 1765.4 | 127 | 1394.6 | 2313.2 |
Bill Williams | |||||||
Alamo | -9999.0 | -99 | -99 | -9999.0 | -99 | 143.3 | 1045.0 |
Agua Fria | |||||||
Lake Pleasant | 666.0 | 104 | 77 | 737.4 | 115 | 641.6 | 869.9 |
Gila | |||||||
San Carlos | 41.6 | 20 | 5 | 22.9 | 11 | 205.0 | 875.0 |
Colorado | |||||||
Lake Powell | 6335.2 | 44 | 26 | 9638.5 | 67 | 14430.3 | 24322.0 |
Lake Mead | 8976.1 | 44 | 34 | 10507.6 | 51 | 20452.4 | 26120.0 |
| |||||||
TOTAL | 16018.9 | 45 | 31 | 20906.4 | 59 | 35729.3 | 52186.9 |
Range | Round to | |
0-1.99 | 0.01 | |
2.0-19.9 | 0.1 | |
20-199 | 1.0 | |
200-999 | 5.0 | |
1000+ | 3 significant digits |