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 SUNDAY: MARCH 6 , 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 17.3 16.5 105 20.1 19.2 105
COTTONWOOD CREEK 7670 22.5 19.5 115 29.9 23.8 126
GRAND TARGHEE 9260 40.1 -M * 26.4 -M *
GRANITE CREEK 6770 18.2 16.8 108 19.7 18.0 109
GRASSY LAKE 7265 31.8 30.7 104 34.1 32.0 107
GROS VENTRE SUMMIT 8750 12.9 12.0 108 12.5 11.1 113
GUNSIGHT PASS 9820 14.5 -M * 14.5 -M *
LEWIS LAKE DIVIDE 7850 31.0 30.8 101 29.8 32.6 91
PHILLIPS BENCH 8200 25.9 24.9 104 26.7 25.5 105
SALT RIVER SUMMIT 7760 14.7 12.6 117 18.8 16.3 115
SNAKE RIVER STATION 6920 -M 17.2 * 22.0 20.0 110
SPRING CREEK DIVIDE 9000 29.5 23.0 128 28.4 23.2 122
THUMB DIVIDE 7980 17.3 16.1 107 17.0 16.6 102
TOGWOTEE PASS 9580 24.2 21.4 113 25.7 21.3 121
TWO OCEAN PLATEAU 9240 -M 24.1 * -M 24.2 *
WILLOW CREEK 8380 28.8 26.3 110 33.6 28.0 120
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Basin wide percent of average 109 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 21.5 20.6 104 20.5 17.7 116
BLACK BEAR 8170 37.0 34.5 107 35.4 34.6 102
CANYON 7870 14.1 11.9 118 15.1 13.4 113
FISHER CREEK 9100 34.0 30.8 110 32.8 31.7 103
MADISON PLATEAU 7750 23.0 21.9 105 25.0 22.9 109
NORTHEAST ENTRANCE 7350 11.8 10.1 117 13.1 11.1 118
PARKER PEAK 9400 24.4 18.9 129 -M 14.2 *
SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127
THUMB DIVIDE 7980 17.3 16.1 107 17.0 16.6 102
TWO OCEAN PLATEAU 9240 -M 24.1 * -M 24.2 *
WHISKEY CREEK 6800 16.8 15.2 111 19.2 18.0 107
WHITE MILL 8700 23.2 21.2 109 23.7 23.5 101
WOLVERINE 7650 12.9 11.0 117 12.5 11.5 109
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Basin wide percent of average 111 108
WIND RIVER
BURROUGHS CREEK 8750 12.8 13.1 98 13.4 14.1 95
CASTLE CREEK 8400 5.7 -M * 6.5 -M *
COLD SPRINGS 9630 7.1 7.6 93 6.8 8.7 78
DEER PARK 9700 16.4 14.6 112 19.1 18.5 103
HOBBS PARK 10100 12.4 12.5 99 10.8 10.3 105
LITTLE WARM 9370 10.2 10.0 102 10.2 11.3 90
SOUTH PASS 9040 15.3 14.7 104 13.4 15.5 86
ST. LAWRENCE ALT 8620 4.2 6.3 67 5.9 7.2 82
TOGWOTEE PASS 9580 24.2 21.4 113 25.7 21.3 121
TOWNSEND CREEK 8700 7.5 7.3 103 9.5 9.2 103
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Basin wide percent of average 102 99
BIGHORN BASIN
BALD MTN. 9380 19.7 16.6 119 16.1 14.6 110
BEAR TRAP MEADOW 8200 6.8 4.6 148 6.8 6.6 103
BLACKWATER 9780 21.4 21.2 101 21.0 17.8 118
BONE SPRINGS DIV 9350 16.1 13.7 118 13.3 12.0 111
EVENING STAR 9200 26.8 26.0 103 29.5 22.4 132
GRAVE SPRINGS 8550 7.2 7.7 94 7.3 8.1 90
KIRWIN 9550 9.4 9.6 98 10.4 9.5 109
MARQUETTE 8760 2.0 7.1 28 5.3 7.8 68
MIDDLE POWDER 7760 8.0 9.4 85 9.8 10.0 98
OWL CREEK 8975 4.6 4.3 107 4.5 4.6 98
POWDER RIVER PASS 9480 11.9 9.1 131 13.9 10.3 135
SHELL CREEK 9580 13.9 12.3 113 12.6 11.1 114
SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127
SYLVAN ROAD 7120 13.5 11.9 113 17.5 15.9 110
TIMBER CREEK 7950 3.0 4.4 68 3.8 5.6 68
YOUNTS PEAK 8350 14.5 15.1 96 12.5 14.0 89
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Basin wide percent of average 103 110
SHOSHONE RIVER
BLACKWATER 9780 21.4 21.2 101 21.0 17.8 118
EVENING STAR 9200 26.8 26.0 103 29.5 22.4 132
KIRWIN 9550 9.4 9.6 98 10.4 9.5 109
MARQUETTE 8760 2.0 7.1 28 5.3 7.8 68
SYLVAN LAKE 8420 20.1 19.4 104 23.3 18.4 127
SYLVAN ROAD 7120 13.5 11.9 113 17.5 15.9 110
YOUNTS PEAK 8350 14.5 15.1 96 12.5 14.0 89
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Basin wide percent of average 98 113
POWDER-TONGUE
BEAR TRAP MEADOW 8200 6.8 4.6 148 6.8 6.6 103
BIG GOOSE 7990 6.5 8.0 81 8.2 7.0 117
BONE SPRINGS DIV 9350 16.1 13.7 118 13.3 12.0 111
BURGESS JUNCTION 7880 9.2 9.4 98 10.1 9.9 102
CLOUD PEAK RESERVOIR 9860 13.3 10.5 127 12.0 10.2 118
DOME LAKE 8880 10.4 9.9 105 10.6 10.6 100
GRAVE SPRINGS 8550 7.2 7.7 94 7.3 8.1 90
HANSEN SAWMILL 8360 5.8 5.4 107 6.4 6.5 98
LITTLE GOOSE 8870 7.3 -M * 11.5 -M *
MIDDLE POWDER 7760 8.0 9.4 85 9.8 10.0 98
POWDER RIVER PASS 9480 11.9 9.1 131 13.9 10.3 135
SOLDIER PARK 8720 5.8 -M * 7.2 -M *
SUCKER CREEK 8880 10.8 9.6 113 11.9 10.9 109
TIE CREEK 6870 5.9 5.2 113 8.5 8.1 105
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Basin wide percent of average 109 108
BELLE FOURCHE
BLIND PARK 6890 8.9 7.7 116 14.5 9.6 151
COLE CANYON 5910 7.5 5.9 127 10.6 5.7 186
NORTH RAPID CREEK 6130 8.3 7.0 119 12.5 7.7 162
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Basin wide percent of average 120 163
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 21.1 16.3 129 21.9 17.6 124
COLUMBINE 9160 28.9 22.6 128 29.4 21.6 136
DIVIDE PEAK 8880 19.0 16.3 117 23.0 17.7 130
ELK RIVER 8700 21.4 16.7 128 22.7 16.7 136
JOE WRIGHT 10120 24.2 17.9 135 29.6 20.9 142
NORTH FRENCH CREEK 10130 37.1 23.6 157 32.2 21.0 153
OLD BATTLE 10000 35.9 27.4 131 28.2 29.6 95
SAGE CREEK BASIN 7850 17.6 9.5 185 15.8 10.3 153
SOUTH BRUSH CREEK 8440 15.7 10.6 148 18.6 13.8 135
TOWER 10500 46.6 38.8 120 45.5 33.1 137
WEBBER SPRINGS 9250 26.3 22.4 117 30.6 22.8 134
WILLOW CREEK PASS 9540 16.0 10.0 160 15.0 10.7 140
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Basin wide percent of average 133 133
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 26.2 19.7 133 26.0 18.2 143
CASPER MTN. 7900 9.8 11.7 84 12.5 11.5 109
DEADMAN HILL 10220 18.2 13.4 136 18.9 13.9 136
DEER PARK 9700 16.4 14.6 112 19.1 18.5 103
LAPRELE CREEK 8375 10.9 9.3 117 12.1 10.4 116
RENO HILL 8400 12.5 10.9 115 14.5 12.0 121
ROACH 9700 17.7 14.4 123 21.1 15.5 136
SAND LAKE 10050 31.4 26.4 119 29.8 20.0 149
SOUTH PASS 9040 15.3 14.7 104 13.4 15.5 86
WINDY PEAK 7900 9.0 6.4 141 11.3 8.8 128
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Basin wide percent of average 118 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.2 * 11.0 12.8 86
DIVIDE PEAK 8880 19.0 16.3 117 23.0 17.7 130
OLD BATTLE 10000 35.9 27.4 131 28.2 29.6 95
SANDSTONE RS 8150 12.7 13.1 97 -M 16.2 *
WHISKEY PARK 8950 -M 25.0 * 33.5 24.3 138
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Basin wide percent of average 119 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.9 12.6 102 13.1 11.7 112
BLIND BULL SUM 8650 25.3 24.0 105 17.9 19.6 91
EAST RIM DIVIDE 7930 13.1 11.5 114 11.4 10.6 108
ELKHART PARK G.S. 9400 11.5 11.5 100 11.4 11.3 101
GROS VENTRE SUMMIT 8750 12.9 12.0 108 12.5 11.1 113
GUNSIGHT PASS 9820 14.5 -M * 14.5 -M *
KENDALL R.S. 7740 11.6 13.0 89 13.2 13.0 102
LOOMIS PARK 8240 17.2 15.1 114 17.7 15.3 116
NEW FORK LAKE 8340 11.1 9.9 112 10.2 9.9 103
POCKET CREEK 9360 10.0 -M * 12.5 -M *
SNIDER BASIN 8060 17.6 12.9 136 17.1 14.2 120
SPRING CREEK DIVIDE 9000 29.5 23.0 128 28.4 23.2 122
TRIPLE PEAK 8500 26.0 21.6 120 28.1 21.5 131
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Basin wide percent of average 113 112
LOWER GREEN RIVER
HAMS FORK 7840 14.7 11.5 128 13.6 10.7 127
HEWINTA 9519 10.8 9.6 113 14.3 12.1 118
HICKERSON PARK 9145 6.4 6.1 105 8.1 6.5 125
HOLE-IN-ROCK 9150 7.0 5.9 119 8.6 6.0 143
INDIAN CREEK 9425 26.8 23.3 115 24.1 21.8 111
KELLEY R.S. 8180 17.9 14.6 123 20.9 17.7 118
STEEL CREEK PARK 10200 14.5 13.2 110 17.0 13.4 127
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Basin wide percent of average 117 121
UPPER BEAR RIVER
BUG LAKE 7950 25.4 17.8 143 24.6 16.7 147
HAYDEN FORK 9212 20.3 13.8 147 25.6 17.7 145
KELLEY R.S. 8180 17.9 14.6 123 20.9 17.7 118
LILY LAKE 9156 17.2 11.2 154 18.8 14.8 127
MONTE CRISTO 8960 31.6 25.8 122 31.6 21.9 144
SALT RIVER SUMMIT 7760 14.7 12.6 117 18.8 16.3 115
TRIAL LAKE 9992 30.7 21.5 143 29.9 21.3 140
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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.