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 FRIDAY: MARCH 4 , 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 16.6 16.3 102 19.7 18.9 104
COTTONWOOD CREEK 7670 22.1 19.1 116 29.5 23.5 126
GRAND TARGHEE 9260 39.3 -M * 26.4 -M *
GRANITE CREEK 6770 17.5 16.5 106 19.1 17.8 107
GRASSY LAKE 7265 30.6 30.2 101 33.0 31.6 104
GROS VENTRE SUMMIT 8750 12.7 11.8 108 12.3 11.0 112
GUNSIGHT PASS 9820 14.3 -M * 14.3 -M *
LEWIS LAKE DIVIDE 7850 29.5 30.3 97 28.9 32.2 90
PHILLIPS BENCH 8200 25.3 24.5 103 26.2 25.1 104
SALT RIVER SUMMIT 7760 14.5 12.4 117 18.6 16.1 116
SNAKE RIVER STATION 6920 -M 16.9 * 21.4 19.8 108
SPRING CREEK DIVIDE 9000 29.0 22.7 128 28.0 22.9 122
THUMB DIVIDE 7980 17.0 15.8 108 16.8 16.4 102
TOGWOTEE PASS 9580 23.6 21.1 112 25.1 21.1 119
TWO OCEAN PLATEAU 9240 -M 23.8 * -M 23.9 *
WILLOW CREEK 8380 28.3 26.0 109 33.1 27.6 120
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Basin wide percent of average 108 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.1 20.2 104 20.3 17.4 117
BLACK BEAR 8170 36.2 33.9 107 34.9 34.1 102
CANYON 7870 13.8 11.7 118 15.0 13.3 113
FISHER CREEK 9100 33.4 30.3 110 32.2 31.3 103
MADISON PLATEAU 7750 22.6 21.4 106 24.6 22.6 109
NORTHEAST ENTRANCE 7350 11.5 10.0 115 12.9 11.0 117
PARKER PEAK 9400 24.0 18.6 129 21.2 14.0 151
SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127
THUMB DIVIDE 7980 17.0 15.8 108 16.8 16.4 102
TWO OCEAN PLATEAU 9240 -M 23.8 * -M 23.9 *
WHISKEY CREEK 6800 16.4 14.8 111 18.9 17.8 106
WHITE MILL 8700 22.7 20.8 109 23.2 23.2 100
WOLVERINE 7650 12.6 10.8 117 12.4 11.4 109
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Basin wide percent of average 110 111
WIND RIVER
BURROUGHS CREEK 8750 12.4 12.9 96 13.0 14.0 93
CASTLE CREEK 8400 5.5 -M * 6.3 -M *
COLD SPRINGS 9630 7.1 7.4 96 6.8 8.6 79
DEER PARK 9700 16.4 14.5 113 19.0 18.3 104
HOBBS PARK 10100 12.3 12.1 102 10.8 10.1 107
LITTLE WARM 9370 10.0 9.7 103 10.1 11.1 91
SOUTH PASS 9040 15.3 14.4 106 13.4 15.3 88
ST. LAWRENCE ALT 8620 4.2 6.1 69 5.9 7.1 83
TOGWOTEE PASS 9580 23.6 21.1 112 25.1 21.1 119
TOWNSEND CREEK 8700 7.7 7.1 108 9.6 9.1 105
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Basin wide percent of average 104 99
BIGHORN BASIN
BALD MTN. 9380 19.5 16.3 120 16.1 14.4 112
BEAR TRAP MEADOW 8200 6.6 4.5 147 7.0 6.5 108
BLACKWATER 9780 21.2 20.9 101 20.8 17.5 119
BONE SPRINGS DIV 9350 16.0 13.5 119 13.3 11.9 112
EVENING STAR 9200 26.1 25.6 102 28.9 22.2 130
GRAVE SPRINGS 8550 6.9 7.5 92 7.0 8.0 88
KIRWIN 9550 9.2 9.3 99 10.2 9.4 109
MARQUETTE 8760 1.8 7.0 26 5.3 7.7 69
MIDDLE POWDER 7760 7.8 9.2 85 9.5 9.8 97
OWL CREEK 8975 4.6 4.2 110 4.6 4.5 102
POWDER RIVER PASS 9480 11.7 8.9 131 13.6 10.2 133
SHELL CREEK 9580 13.8 12.1 114 12.4 11.0 113
SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127
SYLVAN ROAD 7120 13.5 11.6 116 17.3 15.8 109
TIMBER CREEK 7950 3.2 4.3 74 3.8 5.5 69
YOUNTS PEAK 8350 14.1 14.9 95 12.2 13.9 88
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Basin wide percent of average 104 110
SHOSHONE RIVER
BLACKWATER 9780 21.2 20.9 101 20.8 17.5 119
EVENING STAR 9200 26.1 25.6 102 28.9 22.2 130
KIRWIN 9550 9.2 9.3 99 10.2 9.4 109
MARQUETTE 8760 1.8 7.0 26 5.3 7.7 69
SYLVAN LAKE 8420 19.9 19.2 104 23.1 18.2 127
SYLVAN ROAD 7120 13.5 11.6 116 17.3 15.8 109
YOUNTS PEAK 8350 14.1 14.9 95 12.2 13.9 88
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Basin wide percent of average 98 113
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.6 4.5 147 7.0 6.5 108
BIG GOOSE 7990 6.3 7.9 80 8.0 6.9 116
BONE SPRINGS DIV 9350 16.0 13.5 119 13.3 11.9 112
BURGESS JUNCTION 7880 9.1 9.2 99 10.0 9.7 103
CLOUD PEAK RESERVOIR 9860 13.2 10.3 128 12.5 10.0 125
DOME LAKE 8880 10.2 9.7 105 10.6 10.4 102
GRAVE SPRINGS 8550 6.9 7.5 92 7.0 8.0 88
HANSEN SAWMILL 8360 5.6 5.3 106 6.2 6.4 97
LITTLE GOOSE 8870 7.2 -M * 11.3 -M *
MIDDLE POWDER 7760 7.8 9.2 85 9.5 9.8 97
POWDER RIVER PASS 9480 11.7 8.9 131 13.6 10.2 133
SOLDIER PARK 8720 5.7 -M * 7.1 -M *
SUCKER CREEK 8880 10.6 9.4 113 11.8 10.7 110
TIE CREEK 6870 5.9 5.1 116 8.4 8.0 105
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Basin wide percent of average 109 109
BELLE FOURCHE
BLIND PARK 6890 8.7 7.4 118 14.4 9.5 152
COLE CANYON 5910 7.1 5.9 120 10.4 5.6 186
NORTH RAPID CREEK 6130 8.0 7.0 114 12.4 7.6 163
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Basin wide percent of average 117 164
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.9 16.2 129 21.9 17.4 126
COLUMBINE 9160 28.7 22.4 128 29.3 21.3 138
DIVIDE PEAK 8880 18.9 16.0 118 23.0 17.4 132
ELK RIVER 8700 21.3 16.5 129 22.7 16.5 138
JOE WRIGHT 10120 24.1 17.6 137 29.6 20.6 144
NORTH FRENCH CREEK 10130 36.7 23.2 158 32.2 20.7 156
OLD BATTLE 10000 35.1 26.9 130 28.2 29.1 97
SAGE CREEK BASIN 7850 17.5 9.3 188 15.8 10.1 156
SOUTH BRUSH CREEK 8440 15.6 10.3 151 18.6 13.6 137
TOWER 10500 45.9 38.3 120 45.3 32.6 139
WEBBER SPRINGS 9250 25.7 22.0 117 30.7 22.5 136
WILLOW CREEK PASS 9540 15.9 9.8 162 14.9 10.6 141
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Basin wide percent of average 134 134
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 25.5 19.4 131 25.9 17.9 145
CASPER MTN. 7900 9.6 11.5 83 12.2 11.3 108
DEADMAN HILL 10220 18.2 13.2 138 18.9 13.6 139
DEER PARK 9700 16.4 14.5 113 19.0 18.3 104
LAPRELE CREEK 8375 10.9 9.1 120 12.1 10.3 117
RENO HILL 8400 12.3 10.7 115 14.4 11.8 122
ROACH 9700 17.6 14.2 124 21.1 15.3 138
SAND LAKE 10050 30.8 25.9 119 29.3 19.7 149
SOUTH PASS 9040 15.3 14.4 106 13.4 15.3 88
WINDY PEAK 7900 8.8 6.2 142 11.1 8.7 128
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Basin wide percent of average 119 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.0 * 11.1 12.6 88
DIVIDE PEAK 8880 18.9 16.0 118 23.0 17.4 132
OLD BATTLE 10000 35.1 26.9 130 28.2 29.1 97
SANDSTONE RS 8150 12.6 12.8 98 -M 16.0 *
WHISKEY PARK 8950 -M 24.5 * 33.2 23.9 139
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Basin wide percent of average 120 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.8 12.4 103 13.1 11.6 113
BLIND BULL SUM 8650 24.4 23.6 103 17.3 19.4 89
EAST RIM DIVIDE 7930 12.9 11.3 114 11.2 10.4 108
ELKHART PARK G.S. 9400 11.3 11.4 99 11.3 11.2 101
GROS VENTRE SUMMIT 8750 12.7 11.8 108 12.3 11.0 112
GUNSIGHT PASS 9820 14.3 -M * 14.3 -M *
KENDALL R.S. 7740 11.3 12.7 89 12.9 12.8 101
LOOMIS PARK 8240 16.8 14.9 113 17.5 15.1 116
NEW FORK LAKE 8340 10.9 9.8 111 10.1 9.8 103
POCKET CREEK 9360 10.0 -M * 12.5 -M *
SNIDER BASIN 8060 17.2 12.7 135 16.8 14.0 120
SPRING CREEK DIVIDE 9000 29.0 22.7 128 28.0 22.9 122
TRIPLE PEAK 8500 25.3 21.3 119 27.4 21.2 129
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Basin wide percent of average 112 112
LOWER GREEN RIVER
HAMS FORK 7840 14.4 11.3 127 13.4 10.6 126
HEWINTA 9519 10.9 9.4 116 14.2 11.9 119
HICKERSON PARK 9145 6.5 6.0 108 8.2 6.4 128
HOLE-IN-ROCK 9150 6.9 5.9 117 8.6 5.9 146
INDIAN CREEK 9425 26.3 22.9 115 23.9 21.5 111
KELLEY R.S. 8180 17.6 14.3 123 20.7 17.5 118
STEEL CREEK PARK 10200 14.4 13.0 111 17.0 13.2 129
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Basin wide percent of average 117 122
UPPER BEAR RIVER
BUG LAKE 7950 25.2 17.5 144 24.3 16.5 147
HAYDEN FORK 9212 19.9 13.5 147 25.5 17.5 146
KELLEY R.S. 8180 17.6 14.3 123 20.7 17.5 118
LILY LAKE 9156 17.1 11.1 154 18.5 14.6 127
MONTE CRISTO 8960 31.3 25.4 123 31.4 21.6 145
SALT RIVER SUMMIT 7760 14.5 12.4 117 18.6 16.1 116
TRIAL LAKE 9992 30.4 21.1 144 29.9 21.0 142
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Basin wide percent of average 135 135
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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.