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 THURSDAY: MARCH 10 , 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 17.9 16.9 106 20.7 19.6 106
COTTONWOOD CREEK 7670 23.7 20.4 116 31.4 24.4 129
GRAND TARGHEE 9260 41.5 -M * -M -M *
GRANITE CREEK 6770 19.0 17.3 110 20.3 18.3 111
GRASSY LAKE 7265 33.1 31.6 105 35.2 32.7 108
GROS VENTRE SUMMIT 8750 13.2 12.4 106 12.9 11.4 113
GUNSIGHT PASS 9820 15.0 -M * 15.0 -M *
LEWIS LAKE DIVIDE 7850 32.2 31.7 102 -M 33.3 *
PHILLIPS BENCH 8200 26.8 25.6 105 27.5 26.1 105
SALT RIVER SUMMIT 7760 15.6 12.9 121 19.6 16.7 117
SNAKE RIVER STATION 6920 -M 17.7 * 22.8 20.4 112
SPRING CREEK DIVIDE 9000 30.4 23.6 129 29.2 23.7 123
THUMB DIVIDE 7980 17.7 16.7 106 17.3 17.0 102
TOGWOTEE PASS 9580 25.2 22.0 115 26.7 21.9 122
TWO OCEAN PLATEAU 9240 -M 24.8 * -M 24.8 *
WILLOW CREEK 8380 30.6 27.1 113 35.3 28.7 123
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Basin wide percent of average 111 115
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.8 21.3 102 21.0 18.1 116
BLACK BEAR 8170 37.9 35.5 107 36.1 35.6 101
CANYON 7870 14.4 12.3 117 15.4 13.8 112
FISHER CREEK 9100 34.6 31.5 110 33.4 32.5 103
MADISON PLATEAU 7750 23.5 22.5 104 25.5 23.5 109
NORTHEAST ENTRANCE 7350 11.9 10.4 114 13.3 11.4 117
PARKER PEAK 9400 24.8 19.4 128 21.7 14.5 150
SYLVAN LAKE 8420 20.4 20.1 101 23.7 18.9 125
THUMB DIVIDE 7980 17.7 16.7 106 17.3 17.0 102
TWO OCEAN PLATEAU 9240 -M 24.8 * -M 24.8 *
WHISKEY CREEK 6800 17.2 15.6 110 19.5 18.5 105
WHITE MILL 8700 23.8 21.8 109 24.2 24.1 100
WOLVERINE 7650 13.0 11.2 116 13.0 11.7 111
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Basin wide percent of average 110 110
WIND RIVER
BURROUGHS CREEK 8750 13.5 13.4 101 14.1 14.5 97
CASTLE CREEK 8400 6.2 -M * 7.1 -M *
COLD SPRINGS 9630 7.5 7.8 96 7.3 8.9 82
DEER PARK 9700 16.7 15.1 111 19.5 19.1 102
HOBBS PARK 10100 12.6 12.8 98 11.2 10.6 106
LITTLE WARM 9370 10.7 10.3 104 10.8 11.5 94
SOUTH PASS 9040 15.7 15.1 104 13.8 15.9 87
ST. LAWRENCE ALT 8620 4.4 6.4 69 6.2 7.4 84
TOGWOTEE PASS 9580 25.2 22.0 115 26.7 21.9 122
TOWNSEND CREEK 8700 7.7 7.5 103 9.8 9.5 103
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Basin wide percent of average 103 100
BIGHORN BASIN
BALD MTN. 9380 19.9 17.0 117 16.4 15.0 109
BEAR TRAP MEADOW 8200 7.1 4.8 148 7.1 6.8 104
BLACKWATER 9780 22.3 21.9 102 21.8 18.2 120
BONE SPRINGS DIV 9350 16.6 14.0 119 13.7 12.4 110
EVENING STAR 9200 27.1 26.7 101 29.9 22.9 131
GRAVE SPRINGS 8550 7.4 7.9 94 7.5 8.4 89
KIRWIN 9550 9.9 9.9 100 11.0 9.7 113
MARQUETTE 8760 2.3 -M * 5.7 8.0 71
MIDDLE POWDER 7760 8.2 9.7 85 10.0 10.3 97
OWL CREEK 8975 5.1 4.5 113 5.1 4.7 109
POWDER RIVER PASS 9480 12.2 9.4 130 14.1 10.6 133
SHELL CREEK 9580 14.4 12.6 114 13.0 11.4 114
SYLVAN LAKE 8420 20.4 20.1 101 23.7 18.9 125
SYLVAN ROAD 7120 13.8 12.0 115 17.7 16.2 109
TIMBER CREEK 7950 3.5 4.6 76 4.2 5.8 72
YOUNTS PEAK 8350 15.1 15.5 97 13.2 14.4 92
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Basin wide percent of average 107 111
SHOSHONE RIVER
BLACKWATER 9780 22.3 21.9 102 21.8 18.2 120
EVENING STAR 9200 27.1 26.7 101 29.9 22.9 131
KIRWIN 9550 9.9 9.9 100 11.0 9.7 113
MARQUETTE 8760 2.3 -M * 5.7 8.0 71
SYLVAN LAKE 8420 20.4 20.1 101 23.7 18.9 125
SYLVAN ROAD 7120 13.8 12.0 115 17.7 16.2 109
YOUNTS PEAK 8350 15.1 15.5 97 13.2 14.4 92
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Basin wide percent of average 102 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.1 4.8 148 7.1 6.8 104
BIG GOOSE 7990 6.7 8.3 81 8.4 7.1 118
BONE SPRINGS DIV 9350 16.6 14.0 119 13.7 12.4 110
BURGESS JUNCTION 7880 9.4 9.6 98 10.3 10.2 101
CLOUD PEAK RESERVOIR 9860 13.5 11.0 123 12.3 10.5 117
DOME LAKE 8880 10.8 10.2 106 11.0 10.9 101
GRAVE SPRINGS 8550 7.4 7.9 94 7.5 8.4 89
HANSEN SAWMILL 8360 6.1 5.6 109 6.7 6.8 99
LITTLE GOOSE 8870 7.6 -M * 11.8 -M *
MIDDLE POWDER 7760 8.2 9.7 85 10.0 10.3 97
POWDER RIVER PASS 9480 12.2 9.4 130 14.1 10.6 133
SOLDIER PARK 8720 6.2 -M * 7.6 -M *
SUCKER CREEK 8880 11.1 9.8 113 12.2 11.3 108
TIE CREEK 6870 6.0 5.7 105 8.6 8.3 104
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Basin wide percent of average 109 107
BELLE FOURCHE
BLIND PARK 6890 9.6 7.9 122 15.2 9.8 155
COLE CANYON 5910 7.5 6.0 125 10.8 5.8 186
NORTH RAPID CREEK 6130 8.7 7.2 121 12.9 7.8 165
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Basin wide percent of average 122 166
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 22.0 16.7 132 22.1 18.0 123
COLUMBINE 9160 29.8 23.2 128 29.7 22.2 134
DIVIDE PEAK 8880 20.1 16.9 119 24.1 18.2 132
ELK RIVER 8700 22.5 17.2 131 23.7 17.2 138
JOE WRIGHT 10120 25.2 18.4 137 30.3 21.5 141
NORTH FRENCH CREEK 10130 38.7 24.4 159 32.2 21.5 150
OLD BATTLE 10000 37.1 28.2 132 28.8 30.4 95
SAGE CREEK BASIN 7850 18.5 9.8 189 16.6 10.5 158
SOUTH BRUSH CREEK 8440 16.4 11.0 149 19.4 14.1 138
TOWER 10500 48.5 39.9 122 45.8 34.0 135
WEBBER SPRINGS 9250 27.2 23.3 117 32.3 23.4 138
WILLOW CREEK PASS 9540 16.3 10.3 158 15.2 11.0 138
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Basin wide percent of average 135 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 27.3 20.3 134 27.6 18.7 148
CASPER MTN. 7900 10.2 12.1 84 12.8 11.9 108
DEADMAN HILL 10220 18.6 13.8 135 19.3 14.3 135
DEER PARK 9700 16.7 15.1 111 19.5 19.1 102
LAPRELE CREEK 8375 11.7 9.6 122 12.9 10.7 121
RENO HILL 8400 13.0 11.4 114 15.1 12.3 123
ROACH 9700 17.9 14.8 121 21.5 16.0 134
SAND LAKE 10050 32.6 27.4 119 31.2 20.6 151
SOUTH PASS 9040 15.7 15.1 104 13.8 15.9 87
WINDY PEAK 7900 9.8 6.7 146 12.2 9.0 136
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Basin wide percent of average 119 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.7 * 11.9 13.3 89
DIVIDE PEAK 8880 20.1 16.9 119 24.1 18.2 132
OLD BATTLE 10000 37.1 28.2 132 28.8 30.4 95
SANDSTONE RS 8150 14.0 13.6 103 22.8 16.7 137
WHISKEY PARK 8950 -M 26.0 * 35.3 24.9 142
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Basin wide percent of average 121 119
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.3 12.9 103 13.5 12.0 113
BLIND BULL SUM 8650 26.3 24.8 106 18.7 20.0 94
EAST RIM DIVIDE 7930 13.6 11.8 115 11.7 10.8 108
ELKHART PARK G.S. 9400 11.9 11.9 100 11.8 11.6 102
GROS VENTRE SUMMIT 8750 13.2 12.4 106 12.9 11.4 113
GUNSIGHT PASS 9820 15.0 -M * 15.0 -M *
KENDALL R.S. 7740 12.2 13.4 91 13.6 13.3 102
LOOMIS PARK 8240 18.1 15.6 116 18.4 15.7 117
NEW FORK LAKE 8340 11.5 10.2 113 10.7 10.1 106
POCKET CREEK 9360 10.3 -M * 12.8 -M *
SNIDER BASIN 8060 18.2 13.2 138 17.5 14.5 121
SPRING CREEK DIVIDE 9000 30.4 23.6 129 29.2 23.7 123
TRIPLE PEAK 8500 26.7 22.3 120 28.9 22.1 131
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Basin wide percent of average 114 113
LOWER GREEN RIVER
HAMS FORK 7840 15.4 11.8 131 14.2 11.0 129
HEWINTA 9519 11.0 9.9 111 14.6 12.4 118
HICKERSON PARK 9145 6.8 6.2 110 8.5 6.7 127
HOLE-IN-ROCK 9150 7.2 6.1 118 8.9 6.2 144
INDIAN CREEK 9425 27.7 24.1 115 24.9 22.4 111
KELLEY R.S. 8180 18.8 15.0 125 21.7 18.1 120
STEEL CREEK PARK 10200 14.8 13.6 109 17.4 13.7 127
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Basin wide percent of average 117 122
UPPER BEAR RIVER
BUG LAKE 7950 26.3 18.4 143 25.9 17.1 151
HAYDEN FORK 9212 20.6 14.3 144 26.1 18.2 143
KELLEY R.S. 8180 18.8 15.0 125 21.7 18.1 120
LILY LAKE 9156 17.8 11.5 155 19.2 15.1 127
MONTE CRISTO 8960 32.8 26.6 123 31.9 22.5 142
SALT RIVER SUMMIT 7760 15.6 12.9 121 19.6 16.7 117
TRIAL LAKE 9992 31.4 22.2 141 30.2 21.9 138
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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.