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: MARCH 1 , 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 16.3 16.0 102 19.4 18.6 104
COTTONWOOD CREEK 7670 21.5 18.5 116 28.9 23.0 126
GRAND TARGHEE 9260 38.4 -M * 26.3 -M *
GRANITE CREEK 6770 16.8 16.1 104 18.5 17.4 106
GRASSY LAKE 7265 29.8 29.5 101 32.2 31.0 104
GROS VENTRE SUMMIT 8750 12.4 11.5 108 12.1 10.8 112
GUNSIGHT PASS 9820 13.8 -M * 13.8 -M *
LEWIS LAKE DIVIDE 7850 28.6 29.7 96 28.1 31.5 89
PHILLIPS BENCH 8200 24.6 23.9 103 25.5 24.6 104
SALT RIVER SUMMIT 7760 14.2 12.2 116 18.2 15.8 115
SNAKE RIVER STATION 6920 -M 16.6 * 21.0 19.5 108
SPRING CREEK DIVIDE 9000 28.3 22.2 127 27.4 22.5 122
THUMB DIVIDE 7980 16.5 15.4 107 16.3 16.0 102
TOGWOTEE PASS 9580 23.2 20.7 112 24.6 20.7 119
TWO OCEAN PLATEAU 9240 -M 23.3 * -M 23.4 *
WILLOW CREEK 8380 27.4 25.4 108 32.3 27.0 120
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Basin wide percent of average 108 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 20.7 19.7 105 19.8 17.1 116
BLACK BEAR 8170 35.3 32.9 107 34.1 33.3 102
CANYON 7870 13.5 11.3 119 14.5 13.0 112
FISHER CREEK 9100 32.6 29.6 110 31.3 30.6 102
MADISON PLATEAU 7750 22.3 20.9 107 24.2 22.1 110
NORTHEAST ENTRANCE 7350 11.1 9.7 114 12.5 10.8 116
PARKER PEAK 9400 23.2 18.2 127 20.6 13.7 150
SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127
THUMB DIVIDE 7980 16.5 15.4 107 16.3 16.0 102
TWO OCEAN PLATEAU 9240 -M 23.3 * -M 23.4 *
WHISKEY CREEK 6800 16.0 14.4 111 18.6 17.4 107
WHITE MILL 8700 22.1 20.3 109 22.6 22.7 100
WOLVERINE 7650 12.4 10.6 117 12.0 11.2 107
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Basin wide percent of average 111 110
WIND RIVER
BURROUGHS CREEK 8750 12.1 12.6 96 12.6 13.7 92
CASTLE CREEK 8400 5.5 -M * 6.1 -M *
COLD SPRINGS 9630 7.0 7.2 97 6.7 8.4 80
DEER PARK 9700 16.2 14.4 113 18.6 17.8 104
HOBBS PARK 10100 12.2 11.9 103 10.7 9.9 108
LITTLE WARM 9370 9.8 9.5 103 9.8 10.9 90
SOUTH PASS 9040 15.1 14.0 108 13.1 15.0 87
ST. LAWRENCE ALT 8620 4.1 5.9 69 5.8 7.0 83
TOGWOTEE PASS 9580 23.2 20.7 112 24.6 20.7 119
TOWNSEND CREEK 8700 7.5 6.9 109 9.5 8.9 107
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Basin wide percent of average 104 99
BIGHORN BASIN
BALD MTN. 9380 19.4 16.0 121 15.8 14.1 112
BEAR TRAP MEADOW 8200 6.3 4.3 147 6.6 6.4 103
BLACKWATER 9780 20.7 20.4 101 20.2 17.2 117
BONE SPRINGS DIV 9350 15.7 13.2 119 12.9 11.6 111
EVENING STAR 9200 25.6 25.0 102 28.2 21.8 129
GRAVE SPRINGS 8550 6.6 7.3 90 6.8 7.8 87
KIRWIN 9550 9.1 9.1 100 10.0 9.2 109
MARQUETTE 8760 2.0 6.9 29 5.2 7.5 69
MIDDLE POWDER 7760 7.6 9.0 84 9.3 9.6 97
OWL CREEK 8975 4.5 4.1 110 4.5 4.4 102
POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132
SHELL CREEK 9580 13.5 11.8 114 12.2 10.8 113
SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127
SYLVAN ROAD 7120 13.4 11.4 118 17.1 15.6 110
TIMBER CREEK 7950 3.1 4.2 74 3.7 5.4 69
YOUNTS PEAK 8350 13.7 14.6 94 11.8 13.6 87
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Basin wide percent of average 104 110
SHOSHONE RIVER
BLACKWATER 9780 20.7 20.4 101 20.2 17.2 117
EVENING STAR 9200 25.6 25.0 102 28.2 21.8 129
KIRWIN 9550 9.1 9.1 100 10.0 9.2 109
MARQUETTE 8760 2.0 6.9 29 5.2 7.5 69
SYLVAN LAKE 8420 19.5 18.8 104 22.8 17.9 127
SYLVAN ROAD 7120 13.4 11.4 118 17.1 15.6 110
YOUNTS PEAK 8350 13.7 14.6 94 11.8 13.6 87
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Basin wide percent of average 98 112
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.3 4.3 147 6.6 6.4 103
BIG GOOSE 7990 6.0 7.7 78 7.8 6.8 115
BONE SPRINGS DIV 9350 15.7 13.2 119 12.9 11.6 111
BURGESS JUNCTION 7880 8.7 9.0 97 9.7 9.5 102
CLOUD PEAK RESERVOIR 9860 12.7 10.0 127 12.0 9.8 122
DOME LAKE 8880 9.9 9.5 104 10.2 10.2 100
GRAVE SPRINGS 8550 6.6 7.3 90 6.8 7.8 87
HANSEN SAWMILL 8360 5.3 5.2 102 5.9 6.3 94
LITTLE GOOSE 8870 6.8 -M * 11.0 -M *
MIDDLE POWDER 7760 7.6 9.0 84 9.3 9.6 97
POWDER RIVER PASS 9480 11.4 8.7 131 13.2 10.0 132
SOLDIER PARK 8720 5.5 -M * 6.9 -M *
SUCKER CREEK 8880 10.1 9.1 111 11.3 10.5 108
TIE CREEK 6870 5.6 4.9 114 8.1 7.9 103
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Basin wide percent of average 108 107
BELLE FOURCHE
BLIND PARK 6890 8.7 7.1 123 14.4 9.3 155
COLE CANYON 5910 6.9 5.7 121 10.4 5.5 189
NORTH RAPID CREEK 6130 8.0 6.8 118 12.4 7.5 165
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Basin wide percent of average 120 167
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 20.9 15.9 131 21.9 17.2 127
COLUMBINE 9160 27.7 21.9 126 29.2 20.9 140
DIVIDE PEAK 8880 18.5 15.6 119 22.7 17.0 134
ELK RIVER 8700 20.9 16.1 130 22.4 16.1 139
JOE WRIGHT 10120 23.8 17.3 138 29.3 20.2 145
NORTH FRENCH CREEK 10130 36.0 22.7 159 32.2 20.2 159
OLD BATTLE 10000 34.4 26.3 131 27.9 28.5 98
SAGE CREEK BASIN 7850 17.1 9.0 190 15.7 9.9 159
SOUTH BRUSH CREEK 8440 15.2 10.0 152 18.3 13.3 138
TOWER 10500 45.0 37.6 120 45.2 31.9 142
WEBBER SPRINGS 9250 25.4 21.3 119 30.3 22.1 137
WILLOW CREEK PASS 9540 15.4 9.6 160 14.6 10.4 140
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Basin wide percent of average 134 136
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 25.1 19.0 132 25.7 17.5 147
CASPER MTN. 7900 9.3 11.3 82 12.0 11.1 108
DEADMAN HILL 10220 17.9 13.0 138 18.8 13.3 141
DEER PARK 9700 16.2 14.4 113 18.6 17.8 104
LAPRELE CREEK 8375 10.6 8.9 119 11.8 10.0 118
RENO HILL 8400 12.0 10.4 115 14.0 11.5 122
ROACH 9700 17.4 13.9 125 20.9 14.9 140
SAND LAKE 10050 30.2 25.2 120 28.8 19.3 149
SOUTH PASS 9040 15.1 14.0 108 13.1 15.0 87
WINDY PEAK 7900 8.8 6.0 147 11.1 8.5 131
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Basin wide percent of average 119 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 9.7 * 11.1 12.3 90
DIVIDE PEAK 8880 18.5 15.6 119 22.7 17.0 134
OLD BATTLE 10000 34.4 26.3 131 27.9 28.5 98
SANDSTONE RS 8150 12.2 12.5 98 -M 15.7 *
WHISKEY PARK 8950 -M 23.8 * 33.1 23.4 141
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Basin wide percent of average 120 117
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.3 12.1 102 12.6 11.3 112
BLIND BULL SUM 8650 23.4 23.1 101 16.7 19.1 87
EAST RIM DIVIDE 7930 12.4 11.0 113 10.7 10.2 105
ELKHART PARK G.S. 9400 10.6 11.1 95 10.6 10.9 97
GROS VENTRE SUMMIT 8750 12.4 11.5 108 12.1 10.8 112
GUNSIGHT PASS 9820 13.8 -M * 13.8 -M *
KENDALL R.S. 7740 10.8 12.4 87 12.4 12.5 99
LOOMIS PARK 8240 16.1 14.5 111 16.8 14.8 114
NEW FORK LAKE 8340 10.3 9.6 107 9.6 9.6 100
POCKET CREEK 9360 9.6 -M * 12.2 -M *
SNIDER BASIN 8060 16.8 12.4 135 16.5 13.7 120
SPRING CREEK DIVIDE 9000 28.3 22.2 127 27.4 22.5 122
TRIPLE PEAK 8500 24.6 20.9 118 26.7 20.7 129
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Basin wide percent of average 111 110
LOWER GREEN RIVER
HAMS FORK 7840 14.0 11.0 127 13.2 10.4 127
HEWINTA 9519 10.6 9.1 116 14.1 11.6 122
HICKERSON PARK 9145 6.2 5.8 107 7.8 6.2 126
HOLE-IN-ROCK 9150 6.7 5.7 118 8.4 5.8 145
INDIAN CREEK 9425 25.9 22.3 116 23.5 21.1 111
KELLEY R.S. 8180 17.3 14.0 124 20.2 17.2 117
STEEL CREEK PARK 10200 14.1 12.7 111 16.8 12.9 130
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Basin wide percent of average 118 122
UPPER BEAR RIVER
BUG LAKE 7950 24.2 17.1 142 23.2 16.2 143
HAYDEN FORK 9212 19.6 13.2 148 25.3 17.1 148
KELLEY R.S. 8180 17.3 14.0 124 20.2 17.2 117
LILY LAKE 9156 16.6 10.8 154 18.6 14.3 130
MONTE CRISTO 8960 29.5 24.7 119 29.7 21.1 141
SALT RIVER SUMMIT 7760 14.2 12.2 116 18.2 15.8 115
TRIAL LAKE 9992 29.9 20.6 145 29.7 20.5 145
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Basin wide percent of average 134 135
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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.