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 WEDNESDAY: MARCH 9 , 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 17.7 16.8 105 20.6 19.5 106
COTTONWOOD CREEK 7670 23.6 20.1 117 31.3 24.2 129
GRAND TARGHEE 9260 41.2 -M * -M -M *
GRANITE CREEK 6770 18.9 17.2 110 20.3 18.2 112
GRASSY LAKE 7265 32.9 31.4 105 35.0 32.5 108
GROS VENTRE SUMMIT 8750 13.0 12.3 106 12.8 11.4 112
GUNSIGHT PASS 9820 14.9 -M * 14.8 -M *
LEWIS LAKE DIVIDE 7850 31.7 31.5 101 -M 33.1 *
PHILLIPS BENCH 8200 26.7 25.4 105 27.4 25.9 106
SALT RIVER SUMMIT 7760 15.5 12.9 120 19.5 16.6 117
SNAKE RIVER STATION 6920 -M 17.6 * 22.7 20.3 112
SPRING CREEK DIVIDE 9000 30.1 23.5 128 29.0 23.6 123
THUMB DIVIDE 7980 17.5 16.6 105 17.2 16.9 102
TOGWOTEE PASS 9580 25.1 21.9 115 26.6 21.7 123
TWO OCEAN PLATEAU 9240 -M 24.6 * -M 24.7 *
WILLOW CREEK 8380 30.5 26.9 113 35.2 28.5 124
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Basin wide percent of average 110 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.5 21.2 101 20.7 18.0 115
BLACK BEAR 8170 37.6 35.3 107 35.9 35.3 102
CANYON 7870 14.3 12.3 116 15.2 13.7 111
FISHER CREEK 9100 34.3 31.4 109 33.0 32.3 102
MADISON PLATEAU 7750 23.3 22.4 104 25.3 23.4 108
NORTHEAST ENTRANCE 7350 11.9 10.4 114 13.2 11.3 117
PARKER PEAK 9400 24.6 19.3 127 21.6 14.4 150
SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126
THUMB DIVIDE 7980 17.5 16.6 105 17.2 16.9 102
TWO OCEAN PLATEAU 9240 -M 24.6 * -M 24.7 *
WHISKEY CREEK 6800 16.9 15.5 109 19.3 18.4 105
WHITE MILL 8700 23.5 21.7 108 23.9 23.9 100
WOLVERINE 7650 13.0 11.2 116 12.8 11.7 109
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Basin wide percent of average 109 110
WIND RIVER
BURROUGHS CREEK 8750 13.4 13.3 101 14.0 14.4 97
CASTLE CREEK 8400 6.2 -M * 7.1 -M *
COLD SPRINGS 9630 7.4 7.8 95 7.0 8.9 79
DEER PARK 9700 16.6 14.9 111 19.4 19.0 102
HOBBS PARK 10100 12.6 12.7 99 10.9 10.5 104
LITTLE WARM 9370 10.6 10.2 104 10.7 11.5 93
SOUTH PASS 9040 15.6 15.0 104 13.6 15.8 86
ST. LAWRENCE ALT 8620 4.4 6.4 69 6.2 7.4 84
TOGWOTEE PASS 9580 25.1 21.9 115 26.6 21.7 123
TOWNSEND CREEK 8700 7.7 7.4 104 9.7 9.4 103
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Basin wide percent of average 103 100
BIGHORN BASIN
BALD MTN. 9380 19.9 16.9 118 16.4 14.9 110
BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.8 103
BLACKWATER 9780 22.1 21.7 102 21.7 18.1 120
BONE SPRINGS DIV 9350 16.5 13.9 119 13.7 12.3 111
EVENING STAR 9200 27.0 26.5 102 29.6 22.8 130
GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.3 90
KIRWIN 9550 9.9 9.8 101 10.9 9.7 112
MARQUETTE 8760 2.3 7.2 32 5.7 7.9 72
MIDDLE POWDER 7760 8.1 9.6 84 9.9 10.2 97
OWL CREEK 8975 5.0 4.5 111 4.9 4.7 104
POWDER RIVER PASS 9480 12.1 9.3 130 14.0 10.5 133
SHELL CREEK 9580 14.4 12.5 115 13.0 11.4 114
SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126
SYLVAN ROAD 7120 13.7 12.0 114 17.7 16.1 110
TIMBER CREEK 7950 3.4 4.5 76 4.1 5.8 71
YOUNTS PEAK 8350 15.0 15.4 97 13.1 14.3 92
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Basin wide percent of average 104 110
SHOSHONE RIVER
BLACKWATER 9780 22.1 21.7 102 21.7 18.1 120
EVENING STAR 9200 27.0 26.5 102 29.6 22.8 130
KIRWIN 9550 9.9 9.8 101 10.9 9.7 112
MARQUETTE 8760 2.3 7.2 32 5.7 7.9 72
SYLVAN LAKE 8420 20.2 20.0 101 23.5 18.7 126
SYLVAN ROAD 7120 13.7 12.0 114 17.7 16.1 110
YOUNTS PEAK 8350 15.0 15.4 97 13.1 14.3 92
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Basin wide percent of average 98 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.8 103
BIG GOOSE 7990 6.6 8.2 80 8.3 7.1 117
BONE SPRINGS DIV 9350 16.5 13.9 119 13.7 12.3 111
BURGESS JUNCTION 7880 9.3 9.6 97 10.2 10.1 101
CLOUD PEAK RESERVOIR 9860 13.5 10.9 124 12.3 10.4 118
DOME LAKE 8880 10.7 10.1 106 10.9 10.8 101
GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.3 90
HANSEN SAWMILL 8360 5.9 5.5 107 6.7 6.7 100
LITTLE GOOSE 8870 7.5 -M * 11.7 -M *
MIDDLE POWDER 7760 8.1 9.6 84 9.9 10.2 97
POWDER RIVER PASS 9480 12.1 9.3 130 14.0 10.5 133
SOLDIER PARK 8720 6.2 -M * 7.5 -M *
SUCKER CREEK 8880 11.1 9.8 113 12.2 11.2 109
TIE CREEK 6870 6.0 5.5 109 8.6 8.3 104
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Basin wide percent of average 109 108
BELLE FOURCHE
BLIND PARK 6890 9.6 7.9 122 15.3 9.7 158
COLE CANYON 5910 7.5 6.0 125 10.8 5.8 186
NORTH RAPID CREEK 6130 8.6 7.2 119 12.9 7.8 165
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Basin wide percent of average 122 167
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 21.8 16.6 131 22.0 17.9 123
COLUMBINE 9160 29.7 23.1 129 29.7 22.1 134
DIVIDE PEAK 8880 20.0 16.7 120 23.9 18.1 132
ELK RIVER 8700 22.3 17.1 130 23.6 17.0 139
JOE WRIGHT 10120 25.0 18.2 137 30.0 21.3 141
NORTH FRENCH CREEK 10130 38.5 24.2 159 32.2 21.4 150
OLD BATTLE 10000 36.7 28.0 131 28.7 30.2 95
SAGE CREEK BASIN 7850 18.5 9.7 191 16.5 10.5 157
SOUTH BRUSH CREEK 8440 16.4 10.9 150 19.3 14.0 138
TOWER 10500 48.2 39.6 122 45.8 33.7 136
WEBBER SPRINGS 9250 27.0 23.0 117 32.1 23.3 138
WILLOW CREEK PASS 9540 16.3 10.2 160 15.2 11.0 138
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Basin wide percent of average 135 133
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 27.1 20.1 135 27.6 18.6 148
CASPER MTN. 7900 10.2 12.0 85 12.9 11.8 109
DEADMAN HILL 10220 18.5 13.7 135 19.0 14.2 134
DEER PARK 9700 16.6 14.9 111 19.4 19.0 102
LAPRELE CREEK 8375 11.6 9.5 122 12.8 10.7 120
RENO HILL 8400 13.0 11.3 115 15.0 12.2 123
ROACH 9700 17.9 14.7 122 21.4 15.9 135
SAND LAKE 10050 32.3 27.1 119 30.9 20.4 151
SOUTH PASS 9040 15.6 15.0 104 13.6 15.8 86
WINDY PEAK 7900 9.8 6.7 146 12.1 9.0 134
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Basin wide percent of average 119 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.6 * 11.9 13.2 90
DIVIDE PEAK 8880 20.0 16.7 120 23.9 18.1 132
OLD BATTLE 10000 36.7 28.0 131 28.7 30.2 95
SANDSTONE RS 8150 13.9 13.5 103 22.7 16.6 137
WHISKEY PARK 8950 -M 25.8 * 35.0 24.8 141
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Basin wide percent of average 121 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.1 12.8 102 13.4 11.9 113
BLIND BULL SUM 8650 26.0 24.6 106 18.6 19.9 93
EAST RIM DIVIDE 7930 13.5 11.7 115 11.7 10.8 108
ELKHART PARK G.S. 9400 11.7 11.8 99 11.7 11.6 101
GROS VENTRE SUMMIT 8750 13.0 12.3 106 12.8 11.4 112
GUNSIGHT PASS 9820 14.9 -M * 14.8 -M *
KENDALL R.S. 7740 12.0 13.3 90 13.6 13.2 103
LOOMIS PARK 8240 17.9 15.5 115 18.3 15.6 117
NEW FORK LAKE 8340 11.4 10.1 113 10.4 10.1 103
POCKET CREEK 9360 10.2 -M * 12.8 -M *
SNIDER BASIN 8060 18.1 13.1 138 17.4 14.4 121
SPRING CREEK DIVIDE 9000 30.1 23.5 128 29.0 23.6 123
TRIPLE PEAK 8500 26.5 22.1 120 28.7 21.9 131
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Basin wide percent of average 113 113
LOWER GREEN RIVER
HAMS FORK 7840 15.3 11.8 130 14.0 10.9 128
HEWINTA 9519 11.0 9.8 112 14.5 12.3 118
HICKERSON PARK 9145 6.8 6.2 110 8.5 6.6 129
HOLE-IN-ROCK 9150 7.2 6.1 118 8.9 6.2 144
INDIAN CREEK 9425 27.5 23.9 115 24.8 22.2 112
KELLEY R.S. 8180 18.7 14.9 126 21.7 18.0 121
STEEL CREEK PARK 10200 14.8 13.5 110 17.4 13.7 127
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Basin wide percent of average 118 122
UPPER BEAR RIVER
BUG LAKE 7950 26.3 18.3 144 25.8 17.0 152
HAYDEN FORK 9212 20.4 14.1 145 26.0 18.1 144
KELLEY R.S. 8180 18.7 14.9 126 21.7 18.0 121
LILY LAKE 9156 17.9 11.5 156 19.2 15.0 128
MONTE CRISTO 8960 32.9 26.4 125 31.8 22.3 143
SALT RIVER SUMMIT 7760 15.5 12.9 120 19.5 16.6 117
TRIAL LAKE 9992 31.2 22.0 142 30.1 21.8 138
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Basin wide percent of average 136 135
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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.