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: APRIL 24 , 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 26.6 14.6 182 30.5 23.8 128
COTTONWOOD CREEK 7670 35.3 21.9 161 43.3 30.9 140
GRAND TARGHEE 9260 59.8 -M * 44.7 -M *
GRANITE CREEK 6770 26.4 14.9 177 29.5 21.8 135
GRASSY LAKE 7265 48.2 35.6 135 50.0 39.9 125
GROS VENTRE SUMMIT 8750 18.5 14.2 130 18.6 14.7 127
GUNSIGHT PASS 9820 23.4 -M * 21.5 -M *
LEWIS LAKE DIVIDE 7850 53.5 36.0 149 44.0 40.7 108
PHILLIPS BENCH 8200 39.3 30.5 129 40.6 32.2 126
SALT RIVER SUMMIT 7760 20.6 12.7 162 26.1 21.0 124
SNAKE RIVER STATION 6920 -M 14.9 * 32.4 24.9 130
SPRING CREEK DIVIDE 9000 43.2 28.9 149 39.0 29.5 132
THUMB DIVIDE 7980 28.6 16.9 169 25.9 21.3 122
TOGWOTEE PASS 9580 37.1 27.5 135 38.4 28.0 137
TWO OCEAN PLATEAU 9240 -M 31.5 * -M 31.1 *
WILLOW CREEK 8380 46.8 31.7 148 50.0 36.4 137
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Basin wide percent of average 149 128
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 31.8 25.6 124 30.3 22.7 133
BLACK BEAR 8170 55.1 40.6 136 53.2 44.8 119
CANYON 7870 21.0 12.5 168 22.3 17.2 130
FISHER CREEK 9100 49.9 37.6 133 -M 40.7 *
MADISON PLATEAU 7750 36.0 25.4 142 37.8 29.8 127
NORTHEAST ENTRANCE 7350 16.9 8.7 194 18.9 14.3 132
PARKER PEAK 9400 36.6 24.0 153 -M 18.7 *
SYLVAN LAKE 8420 31.6 23.9 132 35.2 23.8 148
THUMB DIVIDE 7980 28.6 16.9 169 25.9 21.3 122
TWO OCEAN PLATEAU 9240 -M 31.5 * -M 31.1 *
WHISKEY CREEK 6800 23.3 16.7 140 27.9 23.5 119
WHITE MILL 8700 34.9 26.3 133 34.6 30.3 114
WOLVERINE 7650 17.4 8.8 198 17.7 14.6 121
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Basin wide percent of average 143 125
WIND RIVER
BURROUGHS CREEK 8750 20.5 14.5 141 21.4 18.6 115
CASTLE CREEK 8400 8.4 -M * 10.3 -M *
COLD SPRINGS 9630 9.8 5.2 188 11.5 13.1 88
DEER PARK 9700 21.8 19.2 114 25.4 25.7 99
HOBBS PARK 10100 18.7 17.5 107 16.5 15.9 104
LITTLE WARM 9370 15.6 11.8 132 16.1 15.9 101
SOUTH PASS 9040 19.4 17.8 109 16.7 21.7 77
ST. LAWRENCE ALT 8620 4.9 6.4 77 9.6 11.2 86
TOGWOTEE PASS 9580 37.1 27.5 135 38.4 28.0 137
TOWNSEND CREEK 8700 9.7 9.6 101 13.1 14.6 90
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Basin wide percent of average 122 102
BIGHORN BASIN
BALD MTN. 9380 29.8 22.8 131 24.2 20.3 119
BEAR TRAP MEADOW 8200 11.2 3.2 350 11.7 10.2 115
BLACKWATER 9780 35.9 27.6 130 33.8 23.8 142
BONE SPRINGS DIV 9350 26.1 17.8 147 21.2 17.4 122
EVENING STAR 9200 40.7 32.5 125 -M 28.9 *
GRAVE SPRINGS 8550 10.9 11.0 99 11.4 12.4 92
KIRWIN 9550 16.6 12.6 132 17.0 13.5 126
MARQUETTE 8760 6.7 -M * 9.7 12.7 76
MIDDLE POWDER 7760 12.7 14.2 89 13.0 14.9 87
OWL CREEK 8975 7.9 4.2 188 8.7 7.6 114
POWDER RIVER PASS 9480 19.8 11.4 174 22.6 14.9 152
SHELL CREEK 9580 22.7 16.4 138 20.5 15.9 129
SYLVAN LAKE 8420 31.6 23.9 132 35.2 23.8 148
SYLVAN ROAD 7120 18.6 9.7 192 26.2 19.8 132
TIMBER CREEK 7950 7.0 5.0 140 7.9 9.6 82
YOUNTS PEAK 8350 23.2 18.1 128 20.4 18.2 112
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Basin wide percent of average 137 121
SHOSHONE RIVER
BLACKWATER 9780 35.9 27.6 130 33.8 23.8 142
EVENING STAR 9200 40.7 32.5 125 -M 28.9 *
KIRWIN 9550 16.6 12.6 132 17.0 13.5 126
MARQUETTE 8760 6.7 -M * 9.7 12.7 76
SYLVAN LAKE 8420 31.6 23.9 132 35.2 23.8 148
SYLVAN ROAD 7120 18.6 9.7 192 26.2 19.8 132
YOUNTS PEAK 8350 23.2 18.1 128 20.4 18.2 112
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Basin wide percent of average 134 127
POWDER-TONGUE
BEAR TRAP MEADOW 8200 11.2 3.2 350 11.7 10.2 115
BIG GOOSE 7990 11.7 12.4 94 13.6 12.0 113
BONE SPRINGS DIV 9350 26.1 17.8 147 21.2 17.4 122
BURGESS JUNCTION 7880 14.2 13.2 108 14.8 14.6 101
CLOUD PEAK RESERVOIR 9860 20.5 15.9 129 18.7 16.0 117
DOME LAKE 8880 17.6 13.5 130 17.1 15.9 108
GRAVE SPRINGS 8550 10.9 11.0 99 11.4 12.4 92
HANSEN SAWMILL 8360 9.8 5.2 188 11.1 10.2 109
LITTLE GOOSE 8870 13.7 -M * 17.9 -M *
MIDDLE POWDER 7760 12.7 14.2 89 13.0 14.9 87
POWDER RIVER PASS 9480 19.8 11.4 174 22.6 14.9 152
SOLDIER PARK 8720 11.0 -M * 11.9 -M *
SUCKER CREEK 8880 16.9 13.3 127 18.6 16.4 113
TIE CREEK 6870 8.3 5.2 160 13.1 12.5 105
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Basin wide percent of average 132 112
BELLE FOURCHE
BLIND PARK 6890 10.6 5.9 180 -M 13.3 *
COLE CANYON 5910 8.8 6.3 140 15.4 8.6 179
NORTH RAPID CREEK 6130 6.6 6.8 97 16.2 10.5 154
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Basin wide percent of average 137 165
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 31.4 17.1 184 36.9 22.6 163
COLUMBINE 9160 39.0 23.1 169 42.3 28.3 149
DIVIDE PEAK 8880 30.7 20.6 149 35.5 23.4 152
ELK RIVER 8700 29.2 17.7 165 32.8 22.2 148
JOE WRIGHT 10120 44.0 24.7 178 44.5 28.8 155
NORTH FRENCH CREEK 10130 60.1 34.0 177 -M 28.4 *
OLD BATTLE 10000 55.0 36.0 153 47.2 38.7 122
SAGE CREEK BASIN 7850 20.5 11.9 172 23.4 13.6 172
SOUTH BRUSH CREEK 8440 24.3 12.4 196 -M 19.2 *
TOWER 10500 68.8 51.4 134 47.7 43.6 109
WEBBER SPRINGS 9250 38.7 26.0 149 44.6 30.2 148
WILLOW CREEK PASS 9540 25.6 14.2 180 23.1 15.0 154
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Basin wide percent of average 162 142
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 40.3 27.9 144 38.0 25.8 147
CASPER MTN. 7900 12.4 17.6 70 17.0 18.3 93
DEADMAN HILL 10220 29.3 19.3 152 29.0 20.0 145
DEER PARK 9700 21.8 19.2 114 25.4 25.7 99
LAPRELE CREEK 8375 15.0 8.7 172 17.4 15.4 113
RENO HILL 8400 17.9 15.8 113 21.0 18.9 111
ROACH 9700 27.0 18.6 145 30.2 21.5 140
SAND LAKE 10050 47.7 36.3 131 -M 28.1 *
SOUTH PASS 9040 19.4 17.8 109 16.7 21.7 77
WINDY PEAK 7900 11.3 6.5 174 16.2 12.7 128
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Basin wide percent of average 129 117
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 6.5 * 20.8 18.0 116
DIVIDE PEAK 8880 30.7 20.6 149 35.5 23.4 152
OLD BATTLE 10000 55.0 36.0 153 47.2 38.7 122
SANDSTONE RS 8150 -M 11.6 * -M 21.1 *
WHISKEY PARK 8950 -M 30.7 * -M 32.6 *
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Basin wide percent of average 151* 129
UPPER GREEN RIVER
BIG SANDY OPENING 9080 19.0 14.7 129 19.1 15.3 125
BLIND BULL SUM 8650 42.6 28.6 149 28.3 24.6 115
EAST RIM DIVIDE 7930 18.2 13.9 131 16.6 13.4 124
ELKHART PARK G.S. 9400 17.4 13.7 127 17.1 15.3 112
GROS VENTRE SUMMIT 8750 18.5 14.2 130 18.6 14.7 127
GUNSIGHT PASS 9820 23.4 -M * 21.5 -M *
KENDALL R.S. 7740 15.5 12.0 129 19.4 16.1 120
LOOMIS PARK 8240 25.5 15.8 161 26.2 19.3 136
NEW FORK LAKE 8340 15.3 10.1 151 14.0 12.9 109
POCKET CREEK 9360 16.9 -M * 18.3 -M *
SNIDER BASIN 8060 24.1 14.1 171 22.8 18.1 126
SPRING CREEK DIVIDE 9000 43.2 28.9 149 39.0 29.5 132
TRIPLE PEAK 8500 41.3 25.3 163 41.6 27.8 150
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Basin wide percent of average 147 127
LOWER GREEN RIVER
HAMS FORK 7840 17.5 7.9 222 18.5 14.1 131
HEWINTA 9519 16.3 11.0 148 21.6 17.1 126
HICKERSON PARK 9145 5.8 7.2 81 12.6 9.6 131
HOLE-IN-ROCK 9150 8.9 6.1 146 14.1 9.2 153
INDIAN CREEK 9425 39.1 29.4 133 32.6 28.6 114
KELLEY R.S. 8180 25.7 15.9 162 28.6 22.9 125
STEEL CREEK PARK 10200 22.9 18.1 127 24.0 19.4 124
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Basin wide percent of average 142 126
UPPER BEAR RIVER
BUG LAKE 7950 -M 20.3 * -M 21.7 *
HAYDEN FORK 9212 28.5 15.0 190 35.9 24.2 148
KELLEY R.S. 8180 25.7 15.9 162 28.6 22.9 125
LILY LAKE 9156 25.9 13.0 199 27.4 20.4 134
MONTE CRISTO 8960 47.1 29.8 158 45.0 29.2 154
SALT RIVER SUMMIT 7760 20.6 12.7 162 26.1 21.0 124
TRIAL LAKE 9992 45.0 26.6 169 40.7 28.4 143
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Basin wide percent of average 171 139
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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.