Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SUNDAY: MAY 29 , 2011
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 10.4 .0 * 35.6 26.8 133
COTTONWOOD CREEK 7670 29.4 6.7 439 49.8 35.5 140
GRAND TARGHEE 9260 68.8 -M * -M -M *
GRANITE CREEK 6770 13.3 2.1 633 33.5 24.7 136
GRASSY LAKE 7265 35.5 16.6 214 56.7 44.7 127
GROS VENTRE SUMMIT 8750 15.9 4.9 324 23.1 17.4 133
GUNSIGHT PASS 9820 -M -M * 27.3 -M *
LEWIS LAKE DIVIDE 7850 44.2 20.2 219 50.2 45.1 111
PHILLIPS BENCH 8200 37.4 15.9 235 47.3 36.3 130
SALT RIVER SUMMIT 7760 9.3 .0 * 29.0 23.9 121
SNAKE RIVER STATION 6920 -M .0 * 36.4 28.1 130
SPRING CREEK DIVIDE 9000 42.2 17.0 248 43.8 32.9 133
THUMB DIVIDE 7980 15.2 3.4 447 29.9 24.6 122
TOGWOTEE PASS 9580 41.3 23.3 177 44.9 32.4 139
TWO OCEAN PLATEAU 9240 53.3 26.5 201 44.8 36.0 124
WILLOW CREEK 8380 41.2 16.5 250 58.1 42.2 138
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Basin wide percent of average 254 129
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 33.5 21.6 155 36.3 26.7 136
BLACK BEAR 8170 52.1 28.4 183 61.7 49.9 124
CANYON 7870 -M 2.3 * 26.8 20.3 132
FISHER CREEK 9100 54.0 31.3 173 55.5 46.3 120
MADISON PLATEAU 7750 29.8 10.9 273 44.4 33.9 131
NORTHEAST ENTRANCE 7350 .3 .6 50* 22.9 17.3 132
PARKER PEAK 9400 40.4 19.9 203 41.3 22.9 180
SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145
THUMB DIVIDE 7980 15.2 3.4 447 29.9 24.6 122
TWO OCEAN PLATEAU 9240 53.3 26.5 201 44.8 36.0 124
WHISKEY CREEK 6800 12.6 2.2 573 33.1 27.0 123
WHITE MILL 8700 35.1 19.4 181 40.3 34.8 116
WOLVERINE 7650 -M .1 * 21.7 18.0 121
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Basin wide percent of average 199 130
WIND RIVER
BURROUGHS CREEK 8750 19.3 4.6 420 27.3 22.3 122
CASTLE CREEK 8400 .0 -M * 13.8 -M *
COLD SPRINGS 9630 9.5 1.1 864 18.5 16.8 110
DEER PARK 9700 23.4 10.1 232 31.7 30.6 104
HOBBS PARK 10100 24.6 11.3 218 25.6 20.7 124
LITTLE WARM 9370 14.9 2.7 552 21.1 19.8 107
SOUTH PASS 9040 18.8 7.9 238 23.7 25.8 92
ST. LAWRENCE ALT 8620 .6 .7 86* 18.1 15.0 121
TOGWOTEE PASS 9580 41.3 23.3 177 44.9 32.4 139
TOWNSEND CREEK 8700 6.4 2.2 291 20.2 18.6 109
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Basin wide percent of average 249 114
BIGHORN BASIN
BALD MTN. 9380 39.1 18.0 217 32.5 25.0 130
BEAR TRAP MEADOW 8200 6.3 .0 * 18.0 13.9 129
BLACKWATER 9780 41.9 26.1 161 40.8 28.5 143
BONE SPRINGS DIV 9350 31.6 10.2 310 28.4 22.0 129
EVENING STAR 9200 41.9 28.0 150 51.0 34.0 150
GRAVE SPRINGS 8550 11.0 2.4 458 19.2 15.9 121
KIRWIN 9550 18.0 6.6 273 23.3 17.2 135
MARQUETTE 8760 13.0 -M * 19.1 17.6 109
MIDDLE POWDER 7760 11.2 4.0 280 20.5 18.8 109
OWL CREEK 8975 .4 .7 57 13.4 10.8 124
POWDER RIVER PASS 9480 21.9 3.1 706 29.2 19.3 151
SHELL CREEK 9580 27.9 12.0 233 27.8 20.2 138
SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145
SYLVAN ROAD 7120 .0 .2 0* 30.9 23.0 134
TIMBER CREEK 7950 .9 .8 113 15.1 14.1 107
YOUNTS PEAK 8350 19.9 8.8 226 24.7 21.8 113
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Basin wide percent of average 225 132
SHOSHONE RIVER
BLACKWATER 9780 41.9 26.1 161 40.8 28.5 143
EVENING STAR 9200 41.9 28.0 150 51.0 34.0 150
KIRWIN 9550 18.0 6.6 273 23.3 17.2 135
MARQUETTE 8760 13.0 -M * 19.1 17.6 109
SYLVAN LAKE 8420 -M 13.3 * 41.6 28.6 145
SYLVAN ROAD 7120 .0 .2 0* 30.9 23.0 134
YOUNTS PEAK 8350 19.9 8.8 226 24.7 21.8 113
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Basin wide percent of average 175 136
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.3 .0 * 18.0 13.9 129
BIG GOOSE 7990 12.7 4.4 289 22.9 16.2 141
BONE SPRINGS DIV 9350 31.6 10.2 310 28.4 22.0 129
BURGESS JUNCTION 7880 14.8 4.1 361 24.7 18.3 135
CLOUD PEAK RESERVOIR 9860 25.8 9.3 277 27.9 21.3 131
DOME LAKE 8880 19.5 4.2 464 25.4 20.3 125
GRAVE SPRINGS 8550 11.0 2.4 458 19.2 15.9 121
HANSEN SAWMILL 8360 5.6 .4 1400* 17.7 13.8 128
LITTLE GOOSE 8870 17.0 -M * 26.7 -M *
MIDDLE POWDER 7760 11.2 4.0 280 20.5 18.8 109
POWDER RIVER PASS 9480 21.9 3.1 706 29.2 19.3 151
SOLDIER PARK 8720 9.2 -M * 18.4 -M *
SUCKER CREEK 8880 22.8 4.8 475 30.2 21.2 142
TIE CREEK 6870 2.2 .0 * 23.4 16.9 138
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Basin wide percent of average 395 132
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 27.5 17.5 157
COLE CANYON 5910 .2 .0 * 23.5 12.6 187
NORTH RAPID CREEK 6130 .0 .0 100* 23.4 13.8 170
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Basin wide percent of average * 169
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 28.4 2.8 1014 46.7 26.6 176
COLUMBINE 9160 26.9 3.4 791 48.6 32.0 152
DIVIDE PEAK 8880 24.0 5.0 480 41.1 27.2 151
ELK RIVER 8700 18.2 1.9 958* 37.8 25.8 147
JOE WRIGHT 10120 52.2 18.7 279 53.5 34.5 155
NORTH FRENCH CREEK 10130 65.3 26.1 250 -M 34.0 *
OLD BATTLE 10000 -M 27.8 * 66.7 43.9 152
SAGE CREEK BASIN 7850 .0 2.9 0 25.9 15.8 164
SOUTH BRUSH CREEK 8440 -M 2.3 * 33.7 23.4 144
TOWER 10500 80.1 45.0 178 70.7 49.6 143
WEBBER SPRINGS 9250 30.9 8.4 368 50.7 34.4 147
WILLOW CREEK PASS 9540 24.6 4.4 559 28.9 18.5 156
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Basin wide percent of average 296 152
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M 13.7 * 46.9 30.8 152
CASPER MTN. 7900 5.8 5.2 112 23.1 23.7 97
DEADMAN HILL 10220 32.0 12.7 252 34.9 24.4 143
DEER PARK 9700 23.4 10.1 232 31.7 30.6 104
LAPRELE CREEK 8375 5.4 1.1 491 22.1 19.8 112
RENO HILL 8400 13.2 4.3 307 26.9 24.4 110
ROACH 9700 25.0 7.2 347 35.7 26.1 137
SAND LAKE 10050 53.2 28.1 189 52.8 33.9 156
SOUTH PASS 9040 18.8 7.9 238 23.7 25.8 92
WINDY PEAK 7900 .4 .2 200* 19.8 16.8 118
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Basin wide percent of average 231 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .0 * 25.6 20.8 123
DIVIDE PEAK 8880 24.0 5.0 480 41.1 27.2 151
OLD BATTLE 10000 -M 27.8 * 66.7 43.9 152
SANDSTONE RS 8150 9.4 .5 1880* 37.3 24.6 152
WHISKEY PARK 8950 -M 16.2 * 59.2 37.5 158
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Basin wide percent of average 607* 149
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.8 2.9 441 22.3 18.4 121
BLIND BULL SUM 8650 43.1 19.4 222 31.8 27.9 114
EAST RIM DIVIDE 7930 .1 3.0 3 19.2 15.9 121
ELKHART PARK G.S. 9400 13.1 4.5 291 19.6 18.8 104
GROS VENTRE SUMMIT 8750 15.9 4.9 324 23.1 17.4 133
GUNSIGHT PASS 9820 -M -M * 27.3 -M *
KENDALL R.S. 7740 2.7 .0 * 22.8 18.4 124
LOOMIS PARK 8240 14.2 3.7 384 29.9 22.3 134
NEW FORK LAKE 8340 3.3 .0 * 16.3 15.7 104
POCKET CREEK 9360 13.5 -M * 21.1 -M *
SNIDER BASIN 8060 10.8 1.0 1080* 26.1 20.3 129
SPRING CREEK DIVIDE 9000 42.2 17.0 248 43.8 32.9 133
TRIPLE PEAK 8500 32.7 7.2 454 46.2 31.7 146
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Basin wide percent of average 300 126
LOWER GREEN RIVER
HAMS FORK 7840 .5 .0 * 22.3 16.8 133
HEWINTA 9519 10.5 1.0 1050* 27.6 20.1 137
HICKERSON PARK 9145 .1 .1 100* 17.5 12.4 141
HOLE-IN-ROCK 9150 .4 .1 400* 19.3 12.0 161
INDIAN CREEK 9425 37.9 16.5 230 37.2 32.2 116
KELLEY R.S. 8180 16.8 2.8 600 32.7 26.0 126
STEEL CREEK PARK 10200 28.4 13.2 215 32.1 22.9 140
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Basin wide percent of average 281* 133
UPPER BEAR RIVER
BUG LAKE 7950 29.4 3.7 795 40.6 24.9 163
HAYDEN FORK 9212 16.6 2.1 790 42.0 28.2 149
KELLEY R.S. 8180 16.8 2.8 600 32.7 26.0 126
LILY LAKE 9156 21.4 2.1 1019 33.2 23.9 139
MONTE CRISTO 8960 47.8 14.5 330 52.1 33.8 154
SALT RIVER SUMMIT 7760 9.3 .0 * 29.0 23.9 121
TRIAL LAKE 9992 51.4 16.3 315 47.2 33.0 143
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Basin wide percent of average 464 143
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1971-2000.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.