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 28 , 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 21.5 18.1 119 23.6 21.3 111
COTTONWOOD CREEK 7670 27.2 23.8 114 34.3 27.1 127
GRAND TARGHEE 9260 46.7 -M * -M -M *
GRANITE CREEK 6770 22.0 18.7 118 23.1 19.8 117
GRASSY LAKE 7265 39.0 35.5 110 39.7 35.8 111
GROS VENTRE SUMMIT 8750 14.8 14.1 105 14.2 12.8 111
GUNSIGHT PASS 9820 17.2 -M * 16.5 -M *
LEWIS LAKE DIVIDE 7850 40.2 35.3 114 -M 36.5 *
PHILLIPS BENCH 8200 32.2 28.7 112 31.9 28.8 111
SALT RIVER SUMMIT 7760 17.7 14.4 123 21.7 18.6 117
SNAKE RIVER STATION 6920 -M 19.1 * 25.8 22.1 117
SPRING CREEK DIVIDE 9000 34.6 26.4 131 31.8 26.2 121
THUMB DIVIDE 7980 22.1 19.0 116 20.2 18.7 108
TOGWOTEE PASS 9580 28.2 24.6 115 29.8 24.3 123
TWO OCEAN PLATEAU 9240 -M 27.7 * -M 27.5 *
WILLOW CREEK 8380 36.0 30.1 120 39.5 31.9 124
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Basin wide percent of average 116 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 25.8 23.2 111 24.8 19.9 125
BLACK BEAR 8170 47.2 39.0 121 43.4 40.0 109
CANYON 7870 17.3 13.7 126 18.3 15.3 120
FISHER CREEK 9100 40.9 34.7 118 39.2 36.0 109
MADISON PLATEAU 7750 29.9 25.0 120 31.5 26.4 119
NORTHEAST ENTRANCE 7350 14.1 11.3 125 15.2 12.5 122
PARKER PEAK 9400 28.6 21.5 133 24.7 16.0 154
SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134
THUMB DIVIDE 7980 22.1 19.0 116 20.2 18.7 108
TWO OCEAN PLATEAU 9240 -M 27.7 * -M 27.5 *
WHISKEY CREEK 6800 20.7 17.1 121 23.6 20.8 113
WHITE MILL 8700 28.0 24.1 116 28.2 26.7 106
WOLVERINE 7650 14.6 11.5 127 14.4 12.7 113
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Basin wide percent of average 119 117
WIND RIVER
BURROUGHS CREEK 8750 14.8 14.6 101 15.6 16.0 98
CASTLE CREEK 8400 6.8 -M * 7.7 -M *
COLD SPRINGS 9630 8.4 8.7 97 7.9 10.3 77
DEER PARK 9700 18.6 16.6 112 21.5 21.5 100
HOBBS PARK 10100 13.9 14.6 95 12.1 12.4 98
LITTLE WARM 9370 12.4 11.7 106 12.5 13.1 95
SOUTH PASS 9040 17.3 16.4 105 14.8 18.1 82
ST. LAWRENCE ALT 8620 4.6 7.1 65 6.6 8.6 77
TOGWOTEE PASS 9580 28.2 24.6 115 29.8 24.3 123
TOWNSEND CREEK 8700 8.0 8.5 94 10.4 11.2 93
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Basin wide percent of average 103 97
BIGHORN BASIN
BALD MTN. 9380 21.7 19.3 112 17.9 17.0 105
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98
BLACKWATER 9780 25.8 24.3 106 25.0 20.2 124
BONE SPRINGS DIV 9350 18.7 15.9 118 15.5 14.2 109
EVENING STAR 9200 31.1 29.5 105 32.9 25.0 132
GRAVE SPRINGS 8550 8.9 9.1 98 8.9 9.4 95
KIRWIN 9550 11.1 11.1 100 12.3 11.0 112
MARQUETTE 8760 2.8 -M * 6.0 9.4 64
MIDDLE POWDER 7760 10.2 11.4 89 11.1 12.0 93
OWL CREEK 8975 5.3 5.4 98 5.3 5.6 95
POWDER RIVER PASS 9480 13.4 10.6 126 15.5 12.0 129
SHELL CREEK 9580 16.3 14.4 113 14.8 13.0 114
SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134
SYLVAN ROAD 7120 16.1 12.7 127 20.3 17.5 116
TIMBER CREEK 7950 3.6 5.5 65 4.5 7.1 63
YOUNTS PEAK 8350 17.3 17.0 102 14.9 15.9 94
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Basin wide percent of average 108 110
SHOSHONE RIVER
BLACKWATER 9780 25.8 24.3 106 25.0 20.2 124
EVENING STAR 9200 31.1 29.5 105 32.9 25.0 132
KIRWIN 9550 11.1 11.1 100 12.3 11.0 112
MARQUETTE 8760 2.8 -M * 6.0 9.4 64
SYLVAN LAKE 8420 24.3 22.4 108 27.8 20.7 134
SYLVAN ROAD 7120 16.1 12.7 127 20.3 17.5 116
YOUNTS PEAK 8350 17.3 17.0 102 14.9 15.9 94
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Basin wide percent of average 107 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.8 8.0 98
BIG GOOSE 7990 8.3 10.1 82 9.9 8.2 121
BONE SPRINGS DIV 9350 18.7 15.9 118 15.5 14.2 109
BURGESS JUNCTION 7880 10.5 11.4 92 11.4 11.8 97
CLOUD PEAK RESERVOIR 9860 15.3 12.9 119 14.0 12.4 113
DOME LAKE 8880 13.3 12.0 111 13.0 12.7 102
GRAVE SPRINGS 8550 8.9 9.1 98 8.9 9.4 95
HANSEN SAWMILL 8360 6.7 6.3 106 7.4 7.9 94
LITTLE GOOSE 8870 9.3 -M * 13.6 -M *
MIDDLE POWDER 7760 10.2 11.4 89 11.1 12.0 93
POWDER RIVER PASS 9480 13.4 10.6 126 15.5 12.0 129
SOLDIER PARK 8720 7.6 -M * 8.7 -M *
SUCKER CREEK 8880 12.9 11.5 112 14.2 13.1 108
TIE CREEK 6870 6.5 5.7 114 9.9 9.6 103
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Basin wide percent of average 109 106
BELLE FOURCHE
BLIND PARK 6890 9.2 8.5 108 16.0 10.9 147
COLE CANYON 5910 7.9 6.7 118 11.6 6.5 178
NORTH RAPID CREEK 6130 8.3 8.1 102 13.6 8.4 162
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Basin wide percent of average 109 160
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 24.4 17.8 137 30.3 19.7 154
COLUMBINE 9160 33.1 24.9 133 33.8 24.8 136
DIVIDE PEAK 8880 23.9 19.5 123 27.1 20.4 133
ELK RIVER 8700 25.1 19.2 131 26.1 19.2 136
JOE WRIGHT 10120 31.0 20.9 148 33.8 24.2 140
NORTH FRENCH CREEK 10130 43.2 28.6 151 -M 24.2 *
OLD BATTLE 10000 42.2 31.7 133 29.3 34.1 86
SAGE CREEK BASIN 7850 21.0 11.3 186 18.5 11.8 157
SOUTH BRUSH CREEK 8440 18.5 12.9 143 21.4 16.0 134
TOWER 10500 53.3 44.7 119 46.3 37.8 122
WEBBER SPRINGS 9250 31.1 26.1 119 35.5 26.2 135
WILLOW CREEK PASS 9540 19.2 11.7 164 17.6 12.5 141
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Basin wide percent of average 136 130
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 31.0 23.2 134 30.1 21.5 140
CASPER MTN. 7900 11.2 14.0 80 13.8 13.9 99
DEADMAN HILL 10220 21.2 15.9 133 21.4 16.5 130
DEER PARK 9700 18.6 16.6 112 21.5 21.5 100
LAPRELE CREEK 8375 13.1 10.8 121 14.0 12.3 114
RENO HILL 8400 14.3 13.7 104 16.6 14.4 115
ROACH 9700 20.1 16.7 120 23.1 18.2 127
SAND LAKE 10050 36.0 31.9 113 34.0 23.5 145
SOUTH PASS 9040 17.3 16.4 105 14.8 18.1 82
WINDY PEAK 7900 10.7 7.9 135 13.0 10.3 126
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Basin wide percent of average 116 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.4 * 14.1 15.5 91
DIVIDE PEAK 8880 23.9 19.5 123 27.1 20.4 133
OLD BATTLE 10000 42.2 31.7 133 29.3 34.1 86
SANDSTONE RS 8150 17.2 15.0 115 25.2 18.5 136
WHISKEY PARK 8950 -M 29.9 * 39.9 28.2 141
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Basin wide percent of average 126 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.3 14.4 106 15.3 13.2 116
BLIND BULL SUM 8650 31.1 27.8 112 21.7 22.0 99
EAST RIM DIVIDE 7930 15.6 13.0 120 13.0 12.0 108
ELKHART PARK G.S. 9400 13.7 13.3 103 13.5 13.1 103
GROS VENTRE SUMMIT 8750 14.8 14.1 105 14.2 12.8 111
GUNSIGHT PASS 9820 17.2 -M * 16.5 -M *
KENDALL R.S. 7740 14.1 14.6 97 15.4 14.5 106
LOOMIS PARK 8240 20.6 17.3 119 20.4 17.3 118
NEW FORK LAKE 8340 13.0 11.1 117 11.6 11.2 104
POCKET CREEK 9360 12.6 -M * 14.4 -M *
SNIDER BASIN 8060 20.9 14.5 144 19.4 16.0 121
SPRING CREEK DIVIDE 9000 34.6 26.4 131 31.8 26.2 121
TRIPLE PEAK 8500 31.6 24.8 127 32.4 24.5 132
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Basin wide percent of average 118 114
LOWER GREEN RIVER
HAMS FORK 7840 17.2 12.3 140 15.3 12.1 126
HEWINTA 9519 13.1 11.7 112 16.8 14.3 117
HICKERSON PARK 9145 8.9 7.3 122 10.0 7.7 130
HOLE-IN-ROCK 9150 8.3 7.0 119 10.6 7.2 147
INDIAN CREEK 9425 31.6 27.6 114 27.4 25.1 109
KELLEY R.S. 8180 21.1 16.8 126 23.9 20.1 119
STEEL CREEK PARK 10200 16.8 15.5 108 19.3 15.8 122
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Basin wide percent of average 119 121
UPPER BEAR RIVER
BUG LAKE 7950 -M 20.8 * -M 19.0 *
HAYDEN FORK 9212 23.4 16.2 144 28.5 20.6 138
KELLEY R.S. 8180 21.1 16.8 126 23.9 20.1 119
LILY LAKE 9156 21.1 12.9 164 21.1 17.2 123
MONTE CRISTO 8960 37.8 29.7 127 36.4 25.2 144
SALT RIVER SUMMIT 7760 17.7 14.4 123 21.7 18.6 117
TRIAL LAKE 9992 35.4 24.8 143 32.9 24.6 134
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Basin wide percent of average 136 130
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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.