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 11 , 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 18.1 17.0 106 21.0 19.7 107
COTTONWOOD CREEK 7670 23.9 20.6 116 31.7 24.5 129
GRAND TARGHEE 9260 42.1 -M * -M -M *
GRANITE CREEK 6770 19.3 17.4 111 20.5 18.4 111
GRASSY LAKE 7265 33.6 31.9 105 35.7 32.8 109
GROS VENTRE SUMMIT 8750 13.5 12.5 108 13.0 11.5 113
GUNSIGHT PASS 9820 15.3 -M * 15.2 -M *
LEWIS LAKE DIVIDE 7850 32.9 31.9 103 -M 33.5 *
PHILLIPS BENCH 8200 27.2 25.8 105 27.8 26.2 106
SALT RIVER SUMMIT 7760 15.6 13.0 120 19.7 16.8 117
SNAKE RIVER STATION 6920 -M 17.8 * 23.1 20.5 113
SPRING CREEK DIVIDE 9000 30.6 23.8 129 29.4 23.8 124
THUMB DIVIDE 7980 18.3 16.9 108 17.7 17.1 104
TOGWOTEE PASS 9580 25.6 22.2 115 27.1 22.0 123
TWO OCEAN PLATEAU 9240 -M 24.9 * -M 25.0 *
WILLOW CREEK 8380 31.4 27.3 115 35.7 28.8 124
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Basin wide percent of average 111 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 22.3 21.4 104 21.4 18.2 118
BLACK BEAR 8170 38.9 35.6 109 37.2 35.9 104
CANYON 7870 14.8 12.4 119 15.9 13.9 114
FISHER CREEK 9100 35.3 31.7 111 34.0 32.7 104
MADISON PLATEAU 7750 24.3 22.7 107 26.3 23.7 111
NORTHEAST ENTRANCE 7350 12.2 10.5 116 13.5 11.4 118
PARKER PEAK 9400 25.2 19.6 129 -M 14.6 *
SYLVAN LAKE 8420 20.8 20.1 103 24.1 19.0 127
THUMB DIVIDE 7980 18.3 16.9 108 17.7 17.1 104
TWO OCEAN PLATEAU 9240 -M 24.9 * -M 25.0 *
WHISKEY CREEK 6800 17.8 15.7 113 19.9 18.7 106
WHITE MILL 8700 24.4 21.9 111 24.8 24.2 102
WOLVERINE 7650 13.3 11.3 118 13.1 11.8 111
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Basin wide percent of average 112 109
WIND RIVER
BURROUGHS CREEK 8750 13.7 13.4 102 14.4 14.6 99
CASTLE CREEK 8400 6.4 -M * 7.1 -M *
COLD SPRINGS 9630 7.7 7.9 97 7.4 9.0 82
DEER PARK 9700 16.8 15.3 110 19.6 19.3 102
HOBBS PARK 10100 12.8 12.9 99 11.2 10.6 106
LITTLE WARM 9370 11.0 10.3 107 11.0 11.6 95
SOUTH PASS 9040 15.9 15.2 105 13.9 16.0 87
ST. LAWRENCE ALT 8620 4.5 6.4 70 6.2 7.5 83
TOGWOTEE PASS 9580 25.6 22.2 115 27.1 22.0 123
TOWNSEND CREEK 8700 7.9 7.5 105 9.8 9.6 102
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Basin wide percent of average 104 100
BIGHORN BASIN
BALD MTN. 9380 19.9 17.2 116 16.5 15.1 109
BEAR TRAP MEADOW 8200 7.1 4.8 148 7.3 6.9 106
BLACKWATER 9780 22.6 22.0 103 22.1 18.3 121
BONE SPRINGS DIV 9350 16.7 14.1 118 13.9 12.5 111
EVENING STAR 9200 27.8 26.8 104 30.3 23.0 132
GRAVE SPRINGS 8550 7.4 7.9 94 7.5 8.5 88
KIRWIN 9550 10.1 9.9 102 11.2 9.8 114
MARQUETTE 8760 2.5 -M * 5.6 8.0 70
MIDDLE POWDER 7760 8.2 9.8 84 10.0 10.4 96
OWL CREEK 8975 5.3 4.5 118 5.1 4.8 106
POWDER RIVER PASS 9480 12.2 9.4 130 14.3 10.7 134
SHELL CREEK 9580 14.4 12.6 114 13.0 11.5 113
SYLVAN LAKE 8420 20.8 20.1 103 24.1 19.0 127
SYLVAN ROAD 7120 13.9 12.0 116 18.0 16.3 110
TIMBER CREEK 7950 3.5 4.6 76 4.2 5.9 71
YOUNTS PEAK 8350 15.4 15.5 99 13.4 14.5 92
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Basin wide percent of average 107 111
SHOSHONE RIVER
BLACKWATER 9780 22.6 22.0 103 22.1 18.3 121
EVENING STAR 9200 27.8 26.8 104 30.3 23.0 132
KIRWIN 9550 10.1 9.9 102 11.2 9.8 114
MARQUETTE 8760 2.5 -M * 5.6 8.0 70
SYLVAN LAKE 8420 20.8 20.1 103 24.1 19.0 127
SYLVAN ROAD 7120 13.9 12.0 116 18.0 16.3 110
YOUNTS PEAK 8350 15.4 15.5 99 13.4 14.5 92
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Basin wide percent of average 104 115
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.1 4.8 148 7.3 6.9 106
BIG GOOSE 7990 6.8 8.4 81 8.5 7.2 118
BONE SPRINGS DIV 9350 16.7 14.1 118 13.9 12.5 111
BURGESS JUNCTION 7880 9.5 9.8 97 10.4 10.2 102
CLOUD PEAK RESERVOIR 9860 13.6 11.1 123 12.5 10.6 118
DOME LAKE 8880 10.9 10.3 106 11.0 11.0 100
GRAVE SPRINGS 8550 7.4 7.9 94 7.5 8.5 88
HANSEN SAWMILL 8360 6.2 5.6 111 6.8 6.8 100
LITTLE GOOSE 8870 7.6 -M * 11.9 -M *
MIDDLE POWDER 7760 8.2 9.8 84 10.0 10.4 96
POWDER RIVER PASS 9480 12.2 9.4 130 14.3 10.7 134
SOLDIER PARK 8720 6.4 -M * 7.6 -M *
SUCKER CREEK 8880 11.1 9.9 112 12.2 11.4 107
TIE CREEK 6870 6.0 5.7 105 8.6 8.4 102
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Basin wide percent of average 108 107
BELLE FOURCHE
BLIND PARK 6890 9.4 8.0 118 15.2 9.9 154
COLE CANYON 5910 7.5 6.1 123 10.8 5.9 183
NORTH RAPID CREEK 6130 8.7 7.3 119 13.0 7.8 167
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Basin wide percent of average 120 165
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 22.0 16.8 131 22.2 18.1 123
COLUMBINE 9160 30.2 23.3 130 31.2 22.4 139
DIVIDE PEAK 8880 20.2 17.0 119 24.1 18.3 132
ELK RIVER 8700 22.7 17.3 131 23.8 17.3 138
JOE WRIGHT 10120 25.3 18.5 137 30.2 21.6 140
NORTH FRENCH CREEK 10130 39.0 24.7 158 32.2 21.7 148
OLD BATTLE 10000 37.9 28.4 133 28.9 30.6 94
SAGE CREEK BASIN 7850 18.7 9.9 189 16.6 10.6 157
SOUTH BRUSH CREEK 8440 16.6 11.2 148 19.4 14.2 137
TOWER 10500 49.0 40.2 122 45.9 34.2 134
WEBBER SPRINGS 9250 27.5 23.5 117 32.3 23.6 137
WILLOW CREEK PASS 9540 16.3 10.3 158 15.2 11.1 137
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Basin wide percent of average 135 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 27.6 20.4 135 27.8 18.9 147
CASPER MTN. 7900 10.3 12.2 84 12.7 12.0 106
DEADMAN HILL 10220 18.7 13.9 135 19.3 14.4 134
DEER PARK 9700 16.8 15.3 110 19.6 19.3 102
LAPRELE CREEK 8375 11.8 9.7 122 13.0 10.8 120
RENO HILL 8400 13.0 11.5 113 15.2 12.4 123
ROACH 9700 18.1 14.9 121 21.6 16.1 134
SAND LAKE 10050 32.8 27.7 118 31.3 20.7 151
SOUTH PASS 9040 15.9 15.2 105 13.9 16.0 87
WINDY PEAK 7900 9.9 6.8 146 12.2 9.1 134
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Basin wide percent of average 118 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.8 * -M 13.4 *
DIVIDE PEAK 8880 20.2 17.0 119 24.1 18.3 132
OLD BATTLE 10000 37.9 28.4 133 28.9 30.6 94
SANDSTONE RS 8150 13.9 13.7 101 22.8 16.8 136
WHISKEY PARK 8950 -M 26.3 * 35.5 25.1 141
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Basin wide percent of average 122 123
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.4 13.0 103 13.7 12.1 113
BLIND BULL SUM 8650 26.8 25.0 107 19.5 20.1 97
EAST RIM DIVIDE 7930 13.9 11.8 118 12.0 10.9 110
ELKHART PARK G.S. 9400 12.0 12.0 100 11.9 11.7 102
GROS VENTRE SUMMIT 8750 13.5 12.5 108 13.0 11.5 113
GUNSIGHT PASS 9820 15.3 -M * 15.2 -M *
KENDALL R.S. 7740 12.5 13.5 93 14.0 13.3 105
LOOMIS PARK 8240 18.5 15.7 118 18.8 15.8 119
NEW FORK LAKE 8340 11.7 10.2 115 10.7 10.2 105
POCKET CREEK 9360 10.6 -M * 13.0 -M *
SNIDER BASIN 8060 18.7 13.3 141 17.7 14.5 122
SPRING CREEK DIVIDE 9000 30.6 23.8 129 29.4 23.8 124
TRIPLE PEAK 8500 27.2 22.4 121 29.4 22.2 132
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Basin wide percent of average 115 114
LOWER GREEN RIVER
HAMS FORK 7840 15.6 11.9 131 14.3 11.0 130
HEWINTA 9519 11.1 10.0 111 14.6 12.5 117
HICKERSON PARK 9145 6.9 6.3 110 8.7 6.7 130
HOLE-IN-ROCK 9150 7.3 6.2 118 8.9 6.3 141
INDIAN CREEK 9425 28.0 24.3 115 25.1 22.5 112
KELLEY R.S. 8180 18.9 15.2 124 21.9 18.2 120
STEEL CREEK PARK 10200 14.9 13.7 109 17.4 13.9 125
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Basin wide percent of average 117 122
UPPER BEAR RIVER
BUG LAKE 7950 26.4 18.5 143 26.2 17.2 152
HAYDEN FORK 9212 20.4 14.4 142 26.0 18.3 142
KELLEY R.S. 8180 18.9 15.2 124 21.9 18.2 120
LILY LAKE 9156 18.0 11.6 155 19.2 15.2 126
MONTE CRISTO 8960 33.2 26.8 124 33.0 22.6 146
SALT RIVER SUMMIT 7760 15.6 13.0 120 19.7 16.8 117
TRIAL LAKE 9992 31.6 22.3 142 30.4 22.1 138
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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.