New 1991-2020 Averages being used this year.
![]() | Prepared by Patrick Kormos 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 Average | 30% Exceedance Volume | 10% Exceedance Volume | |
Bear | |||||||
Utah | April-July | 84 | 93 | 114 | 105 | 130 | 156 |
Woodruff Narrows Rsvr, Abv | April-July | 67 | 77 | 102 | 94 | 123 | 167 |
Montpelier, Nr, Stewart Dam, Blo * | April-July | 69 | 83 | 97 | 60 | 130 | 210 |
Smiths Fork | |||||||
Border, Nr | April-July | 57 | 64 | 72 | 82 | 83 | 105 |
Logan | |||||||
Logan, Nr, State Dam, Abv | April-July | 59 | 69 | 84 | 79 | 92 | 122 |
Blacksmith Fork | |||||||
Hyrum, Nr, Upnl Dam, Abv | April-July | 18.8 | 23 | 29 | 78 | 36 | 49 |
Little Bear | |||||||
Paradise | April-July | 15.1 | 19.3 | 23 | 59 | 39 | 50 |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Average | 30% Exceedance Volume | 10% Exceedance Volume | |
Weber | |||||||
Oakley, Nr | April-July | 80 | 83 | 109 | 98 | 129 | 160 |
Rockport Res, Wanship, Nr | April-July | 75 | 79 | 110 | 96 | 136 | 179 |
Coalville, Nr | April-July | 73 | 78 | 109 | 92 | 137 | 183 |
Chalk Ck | |||||||
Coalville | April-July | 18.2 | 25 | 30 | 86 | 42 | 60 |
Weber | |||||||
Echo Reservoir, Echo, At | April-July | 90 | 101 | 137 | 90 | 176 | 240 |
Lost Ck | |||||||
Lost Ck Reservoir, Croyden, Nr | April-July | 4.8 | 7.6 | 9 | 70 | 10.6 | 14.7 |
East Canyon Ck | |||||||
East Canyon Reservoir, Morgan, Nr | April-July | 11.5 | 15.5 | 18.7 | 81 | 28 | 32 |
Weber | |||||||
Gateway | April-July | 128 | 175 | 245 | 89 | 290 | 390 |
Sf Ogden | |||||||
Huntsville, Nr | April-July | 25 | 34 | 41 | 79 | 54 | 72 |
Ogden | |||||||
Pineview Reservoir, Ogden, Nr | April-July | 38 | 54 | 69 | 63 | 107 | 140 |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Average | 30% Exceedance Volume | 10% Exceedance Volume | |
Little Cottonwood Ck | |||||||
Salt Lake City, Nr | April-July | 27 | 30 | 34 | 100 | 38 | 46 |
Big Cottonwood Ck | |||||||
Salt Lake City, Nr | April-July | 23 | 27 | 33 | 97 | 36 | 46 |
Mill Ck | |||||||
Salt Lake City, Nr | April-July | 3.6 | 4.7 | 5.5 | 106 | 6.6 | 7.7 |
Dell Fk | |||||||
Little Dell Reservoir | April-July | 2.5 | 3.6 | 4.2 | 95 | 5.7 | 6.5 |
Lambs Ck | |||||||
Salt Lake City, Nr | April-July | 2.7 | 3.4 | 4.6 | 107 | 6.1 | 7.5 |
Parleys Ck | |||||||
Salt Lake City, Nr | April-July | 6.3 | 8.9 | 11.3 | 98 | 15.7 | 18.4 |
Red Butte Ck | |||||||
Ft Douglas, At, Salt Lake City, Nr | April-July | 0.78 | 1.1 | 1.5 | 96 | 1.9 | 2.1 |
City Ck | |||||||
Salt Lake City, Nr | April-July | 3.7 | 4.7 | 5.2 | 80 | 6.6 | 7.4 |
S Willow Ck | |||||||
Grantsville, Nr | April-July | 1.3 | 1.5 | 1.9 | 65 | 2.2 | 2.9 |
Forecast Period | 90% Exceedance Volume | 70% Exceedance Volume | 50% Exceedance Volume | Percent Average | 30% Exceedance Volume | 10% Exceedance Volume | |
Spanish Fork | |||||||
Castilla, Nr | April-July | 23 | 28 | 38 | 70 | 49 | 65 |
Provo | |||||||
Woodland, Nr | April-July | 73 | 81 | 93 | 97 | 116 | 137 |
Hailstone, Nr | April-July | 77 | 86 | 99 | 93 | 123 | 148 |
Deer Ck Reservoir | April-July | 83 | 97 | 113 | 95 | 138 | 182 |
American Fork | |||||||
American Fork, Nr, Up Pwrplnt, Abv | April-July | 15.4 | 18.4 | 21 | 84 | 27 | 35 |
West Canyon Ck | |||||||
Cedar Fort, Nr | April-July | 0.19 | 0.34 | 0.58 | 33 | 0.71 | 1.8 |
Salt Ck | |||||||
Nephi Powerplant Div, Blo | April-July | 2.9 | 4.1 | 5.5 | 71 | 6.7 | 11.3 |
Jordan | |||||||
Utah Lake, Provo, Nr | April-July | 146 | 181 | 220 | 102 | 280 | 375 |