FGUS65 KSTR 071955
ESPWY
COLORADO BASIN RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH
WATER SUPPLY INFORMATION FOR
SOUTHWEST WYOMING
AS OF
June 7, 2023
PRECIPITATION(% OF AVERAGE) AND SNOWPACK (% OF MEDIAN):
SUBBASIN MAY OCT-MAY JUN 1 MAY
PRECIP PRECIP SNOW FLOW
---------------------- ------ ------- ----- --------
GREEN ABV FLAMING GORGE 65 105 80 200
BEAR RIVER HEADWATERS 70 115 120 175
PERIOD ENDING: May 31, 2023
Figures are in 1000 Acre Feet
C U R R E N T Y R L A S T Y R
Usable EOM Usable % of EOM Usable % of
Capacity Contents Capacity Contents Capacity
---------------------------------------------------------------------------------
GREEN - FONTENELLE RE| 334.0| 249.9| 75|| 158.3| 47|
BIG SANDY - BIG SANDY| 38.3| 36.2| 94|| 17.9| 47|
BLACKS FORK - MEEKS C| 29.9| 29.9| 100|| 28.4| 95|
EF SMITHS FORK - STAT| 13.9| 14.2| 102|| 12.8| 92|
GREEN - FLAMING GORGE| 3749.0| 2917.4| 78|| 2769.2| 74|
BEAR - WOODRUFF NARRO| 55.8| 63.4| 114|| 39.0| 70|
STREAMFLOW FORECASTS:
GREEN RIVER BASIN
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Green River
Daniel, nr, Warren Brid Apr-Jul 235 92 270 250 220 205 255
Daniel, nr, Warren Brid Jun-Jul 136 78 171 151 121 106 175
Pine Ck
Fremont Lk, abv Apr-Jul 95 94 110 103 85 77 101
Fremont Lk, abv Jun-Jul 64 82 79 72 54 46 78
New Fork River
Big Piney, nr Apr-Jul 350 99 425 395 320 300 355
Big Piney, nr Jun-Jul 185 73 260 230 155 135 255
Green River
Fontenelle Reservoir, F Apr-Jul 830 113 940 880 740 700 735
Fontenelle Reservoir, F Jun-Jul 430 91 540 480 340 300 475
Big Sandy River
Farson, nr Apr-Jul 56 112 67 62 50 45 50
Farson, nr Jun-Jul 30 94 41 36 24.0 19.3 32
Green River
Green River, Wy, nr Apr-Jul 850 116 960 920 770 720 735
Green River, Wy, nr Jun-Jul 435 91 545 505 355 305 480
EF Smiths Fork River
Stateline Reservoir, Ro Apr-Jul 31 111 35 33 29 27 28
Stateline Reservoir, Ro Jun-Jul 17.0 95 21 19 14.8 12.8 17.9
Blacks Fork River
Robertson, nr Apr-Jul 90 102 100 95 85 80 88
Robertson, nr Jun-Jul 46 82 56 51 41 36 56
Hams Fork River
Frontier, nr, Pole Ck, Apr-Jul 67 129 75 70 63 60 52
Frontier, nr, Pole Ck, Jun-Jul 27 112 35 30 23.0 19.9 24
Viva Naughton Reservoir Apr-Jul 102 140 115 106 96 90 73
Viva Naughton Reservoir Jun-Jul 33 110 46 37 27 21 30
Green River
Flaming Gorge Reservoir Apr-Jul 1280 133 1450 1360 1170 1100 965
Flaming Gorge Reservoir Jun-Jul 570 96 740 650 460 390 595
BEAR RIVER BASIN
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Bear River
Utah-Wyoming State Line Apr-Jul 146 134 160 153 143 130 109
Utah-Wyoming State Line Jun-Jul 74 117 88 81 71 58 63
Woodruff Narrows Rsvr, Apr-Jul 188 174 205 194 173 154 108
Woodruff Narrows Rsvr, Jun-Jul 63 124 81 69 48 29 51
Stewart Dam Apr-Jul 310 193 365 345 270 240 161
Stewart Dam Jun-Jul 133 164 187 169 94 64 81
Smiths Fork River
Border, nr Apr-Jul 105 119 115 109 101 97 88
Border, nr Jun-Jul 54 110 64 58 50 46 49
50% Volume that has a 50 percent chance of being exceeded (in 1000 acre-feet).
%AVG 50% volume in percent of the 1991-2020 average.
10% Volume that has a 10 percent chance of being exceeded.
30% Volume that has a 30 percent chance of being exceeded.
90% Volume that has a 90 percent chance of being exceeded.
70% Volume that has a 70 percent chance of being exceeded.
AVG average volume for the 1991-2020 period.
All forecast volumes reflect natural flow. Actual observed flow may
be affected by upstream water management.
CBRFC/Alcorn/Kormos