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 MONDAY: MARCH 7 , 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 17.5 16.6 105 20.5 19.3 106
COTTONWOOD CREEK 7670 23.0 19.7 117 30.5 23.9 128
GRAND TARGHEE 9260 40.6 -M * 26.3 -M *
GRANITE CREEK 6770 18.7 16.9 111 20.1 18.1 111
GRASSY LAKE 7265 32.1 30.9 104 34.3 32.1 107
GROS VENTRE SUMMIT 8750 13.0 12.1 107 12.6 11.2 113
GUNSIGHT PASS 9820 14.8 -M * 14.7 -M *
LEWIS LAKE DIVIDE 7850 31.3 31.0 101 30.1 32.8 92
PHILLIPS BENCH 8200 26.3 25.1 105 27.0 25.6 105
SALT RIVER SUMMIT 7760 15.1 12.7 119 19.1 16.4 116
SNAKE RIVER STATION 6920 -M 17.3 * 22.2 20.1 110
SPRING CREEK DIVIDE 9000 29.9 23.1 129 28.7 23.3 123
THUMB DIVIDE 7980 17.3 16.3 106 17.0 16.7 102
TOGWOTEE PASS 9580 24.8 21.6 115 26.2 21.5 122
TWO OCEAN PLATEAU 9240 -M 24.3 * -M 24.4 *
WILLOW CREEK 8380 29.5 26.5 111 34.2 28.1 122
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Basin wide percent of average 110 112
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.5 20.8 103 20.4 17.8 115
BLACK BEAR 8170 37.1 34.8 107 35.7 34.8 103
CANYON 7870 14.2 12.0 118 15.2 13.5 113
FISHER CREEK 9100 34.0 31.0 110 32.9 31.9 103
MADISON PLATEAU 7750 23.1 22.0 105 25.0 23.1 108
NORTHEAST ENTRANCE 7350 11.8 10.2 116 13.1 11.2 117
PARKER PEAK 9400 24.4 19.0 128 21.5 14.2 151
SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126
THUMB DIVIDE 7980 17.3 16.3 106 17.0 16.7 102
TWO OCEAN PLATEAU 9240 -M 24.3 * -M 24.4 *
WHISKEY CREEK 6800 16.8 15.3 110 19.3 18.2 106
WHITE MILL 8700 23.2 21.4 108 23.7 23.7 100
WOLVERINE 7650 13.0 11.1 117 12.5 11.6 108
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Basin wide percent of average 110 110
WIND RIVER
BURROUGHS CREEK 8750 13.4 13.2 102 13.9 14.2 98
CASTLE CREEK 8400 6.1 -M * 7.0 -M *
COLD SPRINGS 9630 7.3 7.7 95 6.9 8.7 79
DEER PARK 9700 16.5 14.8 111 19.1 18.7 102
HOBBS PARK 10100 12.4 12.6 98 10.8 10.3 105
LITTLE WARM 9370 10.5 10.0 105 10.6 11.3 94
SOUTH PASS 9040 15.5 14.8 105 13.5 15.6 87
ST. LAWRENCE ALT 8620 4.2 6.3 67 6.0 7.3 82
TOGWOTEE PASS 9580 24.8 21.6 115 26.2 21.5 122
TOWNSEND CREEK 8700 7.5 7.3 103 9.5 9.3 102
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Basin wide percent of average 104 100
BIGHORN BASIN
BALD MTN. 9380 19.8 16.7 119 16.3 14.7 111
BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.7 104
BLACKWATER 9780 21.9 21.4 102 21.5 17.9 120
BONE SPRINGS DIV 9350 16.4 13.8 119 13.6 12.1 112
EVENING STAR 9200 26.9 26.1 103 29.6 22.5 132
GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.2 91
KIRWIN 9550 9.8 9.6 102 10.8 9.6 113
MARQUETTE 8760 2.3 7.1 32 5.3 7.8 68
MIDDLE POWDER 7760 8.1 9.5 85 9.8 10.0 98
OWL CREEK 8975 5.0 4.4 114 4.9 4.6 107
POWDER RIVER PASS 9480 12.0 9.2 130 14.0 10.4 135
SHELL CREEK 9580 14.2 12.3 115 12.9 11.2 115
SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126
SYLVAN ROAD 7120 13.7 11.9 115 17.6 16.0 110
TIMBER CREEK 7950 3.4 4.4 77 4.1 5.7 72
YOUNTS PEAK 8350 14.9 15.2 98 12.8 14.1 91
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Basin wide percent of average 105 111
SHOSHONE RIVER
BLACKWATER 9780 21.9 21.4 102 21.5 17.9 120
EVENING STAR 9200 26.9 26.1 103 29.6 22.5 132
KIRWIN 9550 9.8 9.6 102 10.8 9.6 113
MARQUETTE 8760 2.3 7.1 32 5.3 7.8 68
SYLVAN LAKE 8420 20.1 19.6 103 23.4 18.5 126
SYLVAN ROAD 7120 13.7 11.9 115 17.6 16.0 110
YOUNTS PEAK 8350 14.9 15.2 98 12.8 14.1 91
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Basin wide percent of average 99 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.0 4.7 149 7.0 6.7 104
BIG GOOSE 7990 6.5 8.1 80 8.2 7.0 117
BONE SPRINGS DIV 9350 16.4 13.8 119 13.6 12.1 112
BURGESS JUNCTION 7880 9.3 9.5 98 10.2 9.9 103
CLOUD PEAK RESERVOIR 9860 13.4 10.6 126 12.2 10.3 118
DOME LAKE 8880 10.5 9.9 106 10.8 10.7 101
GRAVE SPRINGS 8550 7.3 7.8 94 7.5 8.2 91
HANSEN SAWMILL 8360 5.9 5.5 107 6.5 6.6 98
LITTLE GOOSE 8870 7.4 -M * 11.5 -M *
MIDDLE POWDER 7760 8.1 9.5 85 9.8 10.0 98
POWDER RIVER PASS 9480 12.0 9.2 130 14.0 10.4 135
SOLDIER PARK 8720 5.9 -M * 7.3 -M *
SUCKER CREEK 8880 10.9 9.7 112 12.0 11.0 109
TIE CREEK 6870 5.8 5.3 109 8.3 8.2 101
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Basin wide percent of average 109 108
BELLE FOURCHE
BLIND PARK 6890 9.1 7.7 118 14.8 9.6 154
COLE CANYON 5910 7.5 5.9 127 10.6 5.7 186
NORTH RAPID CREEK 6130 8.3 7.1 117 12.5 7.7 162
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Basin wide percent of average 120 165
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 21.6 16.4 132 22.0 17.7 124
COLUMBINE 9160 29.5 22.8 129 29.5 21.8 135
DIVIDE PEAK 8880 19.7 16.4 120 23.7 17.8 133
ELK RIVER 8700 21.8 16.8 130 23.1 16.8 138
JOE WRIGHT 10120 24.6 18.0 137 29.6 21.1 140
NORTH FRENCH CREEK 10130 38.2 23.8 161 32.2 21.1 153
OLD BATTLE 10000 36.9 27.6 134 28.2 29.8 95
SAGE CREEK BASIN 7850 18.4 9.5 194 16.5 10.3 160
SOUTH BRUSH CREEK 8440 16.3 10.7 152 19.1 13.9 137
TOWER 10500 47.6 39.1 122 45.6 33.3 137
WEBBER SPRINGS 9250 26.8 22.6 119 31.7 23.0 138
WILLOW CREEK PASS 9540 16.2 10.0 162 15.1 10.8 140
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Basin wide percent of average 136 133
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 27.0 19.8 136 26.6 18.3 145
CASPER MTN. 7900 10.2 11.8 86 12.8 11.6 110
DEADMAN HILL 10220 18.4 13.5 136 19.0 14.0 136
DEER PARK 9700 16.5 14.8 111 19.1 18.7 102
LAPRELE CREEK 8375 11.6 9.4 123 12.8 10.5 122
RENO HILL 8400 12.9 11.0 117 15.0 12.1 124
ROACH 9700 17.8 14.5 123 21.3 15.6 137
SAND LAKE 10050 32.1 26.6 121 30.4 20.1 151
SOUTH PASS 9040 15.5 14.8 105 13.5 15.6 87
WINDY PEAK 7900 9.7 6.5 149 12.1 8.8 138
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Basin wide percent of average 120 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.4 * 11.6 13.0 89
DIVIDE PEAK 8880 19.7 16.4 120 23.7 17.8 133
OLD BATTLE 10000 36.9 27.6 134 28.2 29.8 95
SANDSTONE RS 8150 13.5 13.2 102 -M 16.3 *
WHISKEY PARK 8950 -M 25.3 * 34.0 24.4 139
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Basin wide percent of average 123 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.9 12.6 102 13.2 11.8 112
BLIND BULL SUM 8650 25.9 24.2 107 18.4 19.7 93
EAST RIM DIVIDE 7930 13.3 11.5 116 11.6 10.6 109
ELKHART PARK G.S. 9400 11.7 11.6 101 11.6 11.4 102
GROS VENTRE SUMMIT 8750 13.0 12.1 107 12.6 11.2 113
GUNSIGHT PASS 9820 14.8 -M * 14.7 -M *
KENDALL R.S. 7740 12.0 13.1 92 13.5 13.0 104
LOOMIS PARK 8240 17.6 15.2 116 18.1 15.4 118
NEW FORK LAKE 8340 11.3 10.0 113 10.3 10.0 103
POCKET CREEK 9360 10.2 -M * 12.6 -M *
SNIDER BASIN 8060 17.8 13.0 137 17.3 14.2 122
SPRING CREEK DIVIDE 9000 29.9 23.1 129 28.7 23.3 123
TRIPLE PEAK 8500 26.4 21.8 121 28.5 21.6 132
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Basin wide percent of average 114 113
LOWER GREEN RIVER
HAMS FORK 7840 15.1 11.6 130 13.9 10.8 129
HEWINTA 9519 11.0 9.6 115 14.4 12.2 118
HICKERSON PARK 9145 6.8 6.1 111 8.6 6.5 132
HOLE-IN-ROCK 9150 7.1 6.0 118 8.8 6.1 144
INDIAN CREEK 9425 27.4 23.5 117 24.5 21.9 112
KELLEY R.S. 8180 18.4 14.7 125 21.3 17.8 120
STEEL CREEK PARK 10200 14.7 13.3 111 17.3 13.5 128
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Basin wide percent of average 119 123
UPPER BEAR RIVER
BUG LAKE 7950 25.9 18.0 144 25.1 16.8 149
HAYDEN FORK 9212 20.4 13.9 147 25.8 17.8 145
KELLEY R.S. 8180 18.4 14.7 125 21.3 17.8 120
LILY LAKE 9156 17.4 11.3 154 19.1 14.8 129
MONTE CRISTO 8960 32.3 26.0 124 32.2 22.1 146
SALT RIVER SUMMIT 7760 15.1 12.7 119 19.1 16.4 116
TRIAL LAKE 9992 31.2 21.7 144 30.7 21.5 143
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Basin wide percent of average 136 136
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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.