SLCESPCO Jun, 2023
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FGUS65 KSTR 072017
ESPCO
NATIONAL WEATHER SERVICE
COLORADO BASIN RIVER FORECAST CENTER
SALT LAKE CITY, UT
WATER SUPPLY INFORMATION FOR
THE COLORADO RIVER BASIN WITHIN COLORADO
June 7, 2023
BASIN CONDITIONS (% OF AVERAGE) AS OF JUNE 1:
*NOTE: SNOW IS % OF MEDIAN
SUBBASIN MAY OCT-MAY JUN 1 MAY
PRECIP PRECIP SNOW* STRMFLW
---------------------- ------ ------- ---- --------
UPPER COLORADO 75 100 95 170
GUNNISON 65 115 135 185
DOLORES/SAN MIGUEL 75 135 205 225
SAN JUAN 85 125 135 195
YAMPA/WHITE 40 115 125 200
RESERVOIR STORAGE (KAF) AS OF MAY 31:
C U R R E N T Y R L A S T Y R 1991-2020
EOM % of % of EOM % of MAY 31 Usable
Storage Average Capacity Storage Average Avg Storage Capacity
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COLORADO - LAKE GRANB| 476.8| 125| 97| 424.5| 111| 382.8| 490.3|
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WILLOW CK - WILLOW CK| 9.2| 105| 101| 7.1| 81| 8.8| 9.1|
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WILLIAMS FORK - WILLI| 79.3| 99| 82| 88.2| 110| 79.8| 96.9|
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MUDDY CK - WOLFORD MO| 61.1| 104| 93| 49.0| 83| 59.0| 66.0|
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BLUE - DILLON RESERVO| 231.1| 101| 91| 215.6| 94| 228.9| 254.0|
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BLUE - GREEN MTN RESE| 115.5| 121| 79| 79.3| 83| 95.3| 146.9|
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HOMESTAKE CK - HOMEST| 17.4| 74| 41| 15.3| 65|| 23.5| 43.0|
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FRYING PAN - RUEDI RE| 84.4| 109| 83| 74.7| 96|| 77.5| 102.0|
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PLATEAU CK - VEGA RES| 34.6| 112| 105| 26.2| 85|| 30.8| 32.9|
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TAYLOR - TAYLOR PARK | 80.5| 103| 76| 74.0| 95|| 78.2| 106.2|
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GUNNISON - BLUE MESA | 589.0| 101| 71| 334.9| 58|| 580.7| 827.9|
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GUNNISON - MORROW POI| 112.0| 100| 96| 110.7| 99|| 111.6| 117.0|
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GUNNISON - CRYSTAL RE| 16.4| 98| 94| 16.5| 98|| 16.8| 17.5|
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MUDDY CK - PAONIA RES| 16.0| 116| 96| 15.6| 113|| 13.8| 16.7|
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UNCOMPAHGRE - RIDGWAY| 59.1| 86| 71| 65.8| 96|| 68.6| 83.0|
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DOLORES - MCPHEE RESE| 366.2| 110| 96| 257.3| 77|| 333.2| 381.1|
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LOS PINOS - VALLECITO| 90.7| 87| 72| 92.1| 89|| 103.8| 125.4|
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SAN JUAN - NAVAJO RES| 1340.3| 96| 79| 953.6| 68|| 1401.5| 1696.0|
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FLORIDA - LEMON RESER| 32.2| 106| 81| 26.3| 86|| 30.5| 39.8|
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COLORADO - LAKE POWEL| 7887.8| 52| 32| 6346.0| 42|| 15119.4| 24322.0|
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STREAMFLOW FORECASTS:
Developed: Jun 1 2023
Yampa/White Basins
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Yampa River
Steamboat Springs Apr-Jul 330 127 360 345 320 310 260
Elk River
Milner, nr Apr-Jul 520 158 555 535 505 485 330
Elkhead Ck
Long Gulch, abv, Hayden Apr-Jul 115 162 122 118 112 110 71
Yampa River
Maybell, nr Apr-Jul 1400 152 1510 1460 1360 1330 920
Little Snake River
Slater, nr Apr-Jul 215 139 230 220 205 195 155
Lily, nr Apr-Jul 560 172 610 585 545 530 325
Yampa River
Deerlodge Park Apr-Jul 1960 165 2130 2050 1920 1870 1190
White River
Meeker, nr Apr-Jul 385 148 420 400 370 350 260
Watson, nr Apr-Jul 420 156 460 435 400 390 270
Upper Colorado, Above Gunnison Basin
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Colorado River
Lake Granby, Granby, nr Apr-Jul 240 107 275 255 230 215 225
Willow Ck
Willow Ck Reservoir, Gr Apr-Jul 82 164 95 88 78 74 50
Fraser River
Winter Park Apr-Jul 20 108 23 21 19.0 17.5 18.6
Williams Fork River
Williams Fork Reservoir Apr-Jul 90 94 105 96 85 80 96
Blue River
Dillon Reservoir Apr-Jul 135 81 155 145 125 115 167
Green Mtn Reservoir Apr-Jul 240 86 270 255 225 210 280
Muddy Ck
Wolford Mountain Reserv Apr-Jul 52 100 60 56 49 46 52
Colorado River
Kremmling, nr Apr-Jul 940 108 1050 990 890 840 870
Eagle River
Gypsum, blo Apr-Jul 300 90 345 320 280 265 335
Colorado River
Dotsero, nr Apr-Jul 1480 106 1630 1550 1400 1330 1400
Frying Pan River
Ruedi Reservoir, Basalt Apr-Jul 130 96 145 137 122 115 135
Roaring Fork River
Glenwood Springs Apr-Jul 830 127 900 865 795 760 655
Colorado River
Glenwood Springs, blo Apr-Jul 2380 114 2680 2530 2250 2130 2080
Cameo, nr Apr-Jul 2800 123 3100 2950 2680 2550 2270
Gunnison Basin
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Taylor River
Taylor Park Reservoir Apr-Jul 118 126 134 124 114 109 94
Almont Apr-Jul 184 125 205 193 177 169 147
East River
Almont Apr-Jul 265 150 285 275 255 245 177
Gunnison River
Gunnison, nr Apr-Jul 505 144 550 525 490 475 350
Tomichi Ck
Gunnison Apr-Jul 87 130 103 94 84 80 67
Lake Fork River
Gateview Apr-Jul 127 108 146 135 122 116 118
Gunnison River
Blue Mesa Reservoir Apr-Jul 845 133 940 890 825 795 635
Morrow Point Reservoir Apr-Jul 910 132 1020 965 890 860 690
Crystal Reservoir Apr-Jul 1020 132 1140 1070 990 950 770
Muddy Ck
Paonia Reservoir, Bardi Apr-Jul 186 230 200 191 182 176 81
NF Gunnison River
Somerset, nr Apr-Jul 485 183 520 500 475 460 265
Surface Ck
Cedaredge Apr-Jul 36 247 39 37 35 34 14.6
Uncompahgre River
Ridgway Reservoir Apr-Jul 112 122 127 118 107 103 92
Colona Apr-Jul 147 123 167 154 138 129 120
Delta Apr-Jul 167 176 200 182 154 144 95
Gunnison River
Grand Junction, nr Apr-Jul 2250 169 2430 2320 2180 2100 1330
Dolores Basin
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Dolores River
Dolores Apr-Jul 395 184 430 410 385 370 215
Mcphee Reservoir Apr-Jul 530 208 565 545 515 505 255
San Miguel River
Placerville, nr Apr-Jul 160 139 177 168 154 148 115
Dolores River
Cisco, nr Apr-Jul 1120 222 1180 1140 1090 1080 505
San Juan Basin
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
San Juan River
Pagosa Springs Apr-Jul 290 149 315 300 280 270 194
Carracas, nr Apr-Jul 505 153 540 520 490 475 330
Rio Blanco River
Pagosa Springs, nr, Bla Apr-Jul 71 145 77 74 68 66 49
Little Navajo River
Oso Div Dam,bl,chromo,n Apr-Jul 10.4 170 11.0 10.6 10.1 9.8 6.1
Navajo River
Chromo, nr, Oso Div Dam Apr-Jul 89 153 97 92 86 83 58
Piedra River
Arboles, nr Apr-Jul 305 169 330 315 300 290 181
Los Pinos River
Vallecito Reservoir, Ba Apr-Jul 265 150 290 275 255 245 177
San Juan River
Navajo Reservoir, Archu Apr-Jul 1010 160 1110 1050 980 945 630
Florida River
Lemon Reservoir, Durang Apr-Jul 73 152 84 77 69 66 48
Animas River
Durango Apr-Jul 570 148 630 590 550 530 385
San Juan River
Bluff, nr Apr-Jul 1800 162 1930 1850 1760 1700 1110
Mancos River
Mancos, nr Apr-Jul 46 267 49 47 44 43 17.2
Lake Powell
Period 50% %AVG 10% 30% 70% 90% AVG
------ ---- ---- ---- ---- ---- ---- ---
Colorado River
Lake Powell, Glen Cyn D Apr-Jul 10700 167 11620 11080 10230 9820 6390
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/Nielson