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 TUESDAY: APRIL 5 , 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 22.5 18.0 125 24.7 22.0 112
COTTONWOOD CREEK 7670 30.2 24.4 124 36.8 28.3 130
GRAND TARGHEE 9260 49.6 -M * 37.8 -M *
GRANITE CREEK 6770 22.4 18.4 122 24.6 20.4 121
GRASSY LAKE 7265 40.3 36.7 110 42.0 37.0 114
GROS VENTRE SUMMIT 8750 14.9 14.5 103 14.7 13.3 111
GUNSIGHT PASS 9820 18.6 -M * 17.7 -M *
LEWIS LAKE DIVIDE 7850 42.3 36.3 117 -M 37.8 *
PHILLIPS BENCH 8200 33.8 29.8 113 33.8 29.9 113
SALT RIVER SUMMIT 7760 17.9 14.9 120 22.6 19.4 116
SNAKE RIVER STATION 6920 -M 19.0 * 27.0 22.9 118
SPRING CREEK DIVIDE 9000 37.1 27.5 135 34.0 27.3 125
THUMB DIVIDE 7980 22.8 19.3 118 20.7 19.5 106
TOGWOTEE PASS 9580 29.9 25.7 116 31.5 25.4 124
TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 *
WILLOW CREEK 8380 38.8 31.1 125 42.1 33.2 127
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Basin wide percent of average 119 119
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.1 24.1 117 26.4 20.7 128
BLACK BEAR 8170 49.0 40.3 122 44.7 41.6 107
CANYON 7870 17.7 14.0 126 19.0 15.9 119
FISHER CREEK 9100 43.8 35.9 122 41.1 37.5 110
MADISON PLATEAU 7750 30.7 25.8 119 32.5 27.6 118
NORTHEAST ENTRANCE 7350 15.0 11.2 134 16.5 13.1 126
PARKER PEAK 9400 30.6 22.3 137 26.8 16.8 160
SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136
THUMB DIVIDE 7980 22.8 19.3 118 20.7 19.5 106
TWO OCEAN PLATEAU 9240 -M 29.1 * -M 28.6 *
WHISKEY CREEK 6800 21.1 17.7 119 24.2 21.6 112
WHITE MILL 8700 30.2 25.0 121 30.2 27.8 109
WOLVERINE 7650 15.3 11.7 131 15.3 13.2 116
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Basin wide percent of average 122 118
WIND RIVER
BURROUGHS CREEK 8750 16.0 14.9 107 16.8 16.8 100
CASTLE CREEK 8400 6.6 -M * 8.0 -M *
COLD SPRINGS 9630 8.1 8.8 92 8.5 11.1 77
DEER PARK 9700 19.3 17.3 112 22.6 22.7 100
HOBBS PARK 10100 15.3 15.7 97 13.5 13.4 101
LITTLE WARM 9370 12.7 12.3 103 13.1 13.9 94
SOUTH PASS 9040 17.6 17.2 102 15.5 19.1 81
ST. LAWRENCE ALT 8620 4.4 7.6 58 7.5 9.2 82
TOGWOTEE PASS 9580 29.9 25.7 116 31.5 25.4 124
TOWNSEND CREEK 8700 9.2 9.4 98 11.7 12.1 97
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Basin wide percent of average 103 98
BIGHORN BASIN
BALD MTN. 9380 24.4 20.3 120 19.4 18.0 108
BEAR TRAP MEADOW 8200 8.7 5.1 171 8.5 8.6 99
BLACKWATER 9780 27.7 25.4 109 26.5 21.2 125
BONE SPRINGS DIV 9350 21.0 16.8 125 17.4 15.1 115
EVENING STAR 9200 34.3 30.5 112 36.5 26.1 140
GRAVE SPRINGS 8550 9.0 9.8 92 9.2 10.1 91
KIRWIN 9550 12.2 11.8 103 13.3 11.6 115
MARQUETTE 8760 3.5 -M * 6.5 10.2 64
MIDDLE POWDER 7760 10.4 12.4 84 11.4 12.8 89
OWL CREEK 8975 5.5 5.8 95 6.0 6.2 97
POWDER RIVER PASS 9480 15.9 11.2 142 18.3 12.8 143
SHELL CREEK 9580 18.6 15.2 122 16.8 13.8 122
SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136
SYLVAN ROAD 7120 16.3 12.8 127 21.8 18.1 120
TIMBER CREEK 7950 4.2 5.9 71 5.2 7.7 68
YOUNTS PEAK 8350 18.6 17.6 106 16.1 16.6 97
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Basin wide percent of average 113 114
SHOSHONE RIVER
BLACKWATER 9780 27.7 25.4 109 26.5 21.2 125
EVENING STAR 9200 34.3 30.5 112 36.5 26.1 140
KIRWIN 9550 12.2 11.8 103 13.3 11.6 115
MARQUETTE 8760 3.5 -M * 6.5 10.2 64
SYLVAN LAKE 8420 25.8 23.2 111 29.3 21.6 136
SYLVAN ROAD 7120 16.3 12.8 127 21.8 18.1 120
YOUNTS PEAK 8350 18.6 17.6 106 16.1 16.6 97
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Basin wide percent of average 111 120
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.7 5.1 171 8.5 8.6 99
BIG GOOSE 7990 9.0 11.3 80 10.8 9.0 120
BONE SPRINGS DIV 9350 21.0 16.8 125 17.4 15.1 115
BURGESS JUNCTION 7880 11.5 12.2 94 12.3 12.6 98
CLOUD PEAK RESERVOIR 9860 17.0 13.9 122 15.7 13.4 117
DOME LAKE 8880 14.6 13.0 112 13.9 13.6 102
GRAVE SPRINGS 8550 9.0 9.8 92 9.2 10.1 91
HANSEN SAWMILL 8360 7.3 6.6 111 8.3 8.5 98
LITTLE GOOSE 8870 10.3 -M * 14.7 -M *
MIDDLE POWDER 7760 10.4 12.4 84 11.4 12.8 89
POWDER RIVER PASS 9480 15.9 11.2 142 18.3 12.8 143
SOLDIER PARK 8720 8.4 -M * 9.7 -M *
SUCKER CREEK 8880 14.0 12.3 114 15.5 14.0 111
TIE CREEK 6870 6.6 6.1 108 10.8 10.3 105
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Basin wide percent of average 111 108
BELLE FOURCHE
BLIND PARK 6890 10.3 8.3 124 17.3 11.4 152
COLE CANYON 5910 8.1 7.0 116 12.6 6.9 183
NORTH RAPID CREEK 6130 8.7 8.6 101 14.6 8.8 166
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Basin wide percent of average 113 164
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 25.9 18.0 144 33.6 20.5 164
COLUMBINE 9160 35.3 25.1 141 36.6 25.9 141
DIVIDE PEAK 8880 24.2 20.4 119 29.2 21.3 137
ELK RIVER 8700 26.4 20.0 132 27.8 20.1 138
JOE WRIGHT 10120 34.3 22.1 155 37.2 25.5 146
NORTH FRENCH CREEK 10130 48.4 30.5 159 -M 25.3 *
OLD BATTLE 10000 44.7 33.1 135 46.2 35.5 130
SAGE CREEK BASIN 7850 21.4 11.8 181 19.6 12.3 159
SOUTH BRUSH CREEK 8440 19.6 13.3 147 23.1 16.9 137
TOWER 10500 58.0 47.0 123 47.1 39.4 120
WEBBER SPRINGS 9250 32.2 26.4 122 37.5 27.4 137
WILLOW CREEK PASS 9540 20.7 12.6 164 18.8 13.2 142
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Basin wide percent of average 140 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 33.0 24.6 134 32.2 22.8 141
CASPER MTN. 7900 11.4 15.2 75 14.9 15.0 99
DEADMAN HILL 10220 21.3 17.0 125 23.0 17.4 132
DEER PARK 9700 19.3 17.3 112 22.6 22.7 100
LAPRELE CREEK 8375 13.4 11.0 122 14.8 13.0 114
RENO HILL 8400 15.2 14.9 102 18.0 15.6 115
ROACH 9700 21.5 17.7 121 24.6 19.2 128
SAND LAKE 10050 39.2 33.4 117 -M 24.9 *
SOUTH PASS 9040 17.6 17.2 102 15.5 19.1 81
WINDY PEAK 7900 10.4 8.4 124 13.6 10.9 125
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Basin wide percent of average 114 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.5 * 15.7 16.3 96
DIVIDE PEAK 8880 24.2 20.4 119 29.2 21.3 137
OLD BATTLE 10000 44.7 33.1 135 46.2 35.5 130
SANDSTONE RS 8150 18.8 14.5 130 26.9 19.2 140
WHISKEY PARK 8950 -M 30.6 * -M 29.4 *
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Basin wide percent of average 129 128
UPPER GREEN RIVER
BIG SANDY OPENING 9080 16.1 15.0 107 16.2 13.8 117
BLIND BULL SUM 8650 34.9 28.6 122 23.8 22.9 104
EAST RIM DIVIDE 7930 15.5 13.5 115 13.7 12.4 110
ELKHART PARK G.S. 9400 14.2 13.8 103 13.9 13.8 101
GROS VENTRE SUMMIT 8750 14.9 14.5 103 14.7 13.3 111
GUNSIGHT PASS 9820 18.6 -M * 17.7 -M *
KENDALL R.S. 7740 13.7 14.4 95 15.8 14.9 106
LOOMIS PARK 8240 21.2 17.5 121 21.6 17.9 121
NEW FORK LAKE 8340 13.1 11.5 114 12.1 11.7 103
POCKET CREEK 9360 12.9 -M * 14.9 -M *
SNIDER BASIN 8060 21.2 14.9 142 20.0 16.6 120
SPRING CREEK DIVIDE 9000 37.1 27.5 135 34.0 27.3 125
TRIPLE PEAK 8500 35.7 25.6 139 35.6 25.5 140
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Basin wide percent of average 121 116
LOWER GREEN RIVER
HAMS FORK 7840 16.8 11.5 146 15.9 12.6 126
HEWINTA 9519 12.5 12.4 101 18.1 15.1 120
HICKERSON PARK 9145 7.3 8.0 91 10.4 8.2 127
HOLE-IN-ROCK 9150 8.8 7.4 119 11.5 7.8 147
INDIAN CREEK 9425 33.0 28.8 115 28.4 26.3 108
KELLEY R.S. 8180 21.8 17.3 126 24.7 21.0 118
STEEL CREEK PARK 10200 18.2 16.3 112 20.9 16.9 124
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Basin wide percent of average 116 120
UPPER BEAR RIVER
BUG LAKE 7950 31.2 21.6 144 30.2 19.8 153
HAYDEN FORK 9212 24.6 16.8 146 30.5 21.7 141
KELLEY R.S. 8180 21.8 17.3 126 24.7 21.0 118
LILY LAKE 9156 22.6 14.2 159 22.9 18.1 127
MONTE CRISTO 8960 39.9 30.4 131 37.7 26.3 143
SALT RIVER SUMMIT 7760 17.9 14.9 120 22.6 19.4 116
TRIAL LAKE 9992 37.4 25.7 146 35.1 25.7 137
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Basin wide percent of average 139 134
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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.