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 30 , 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 21.6 18.1 119 23.7 21.5 110
COTTONWOOD CREEK 7670 28.0 24.0 117 35.0 27.5 127
GRAND TARGHEE 9260 47.3 -M * -M -M *
GRANITE CREEK 6770 22.2 18.7 119 23.3 20.0 117
GRASSY LAKE 7265 39.5 35.8 110 40.6 36.1 112
GROS VENTRE SUMMIT 8750 14.8 14.2 104 14.3 12.9 111
GUNSIGHT PASS 9820 17.7 -M * 16.9 -M *
LEWIS LAKE DIVIDE 7850 40.9 35.6 115 -M 36.9 *
PHILLIPS BENCH 8200 32.5 29.0 112 32.2 29.1 111
SALT RIVER SUMMIT 7760 17.9 14.5 123 21.9 18.8 116
SNAKE RIVER STATION 6920 -M 19.2 * 26.0 22.3 117
SPRING CREEK DIVIDE 9000 34.9 26.7 131 32.1 26.5 121
THUMB DIVIDE 7980 22.3 19.1 117 20.3 18.9 107
TOGWOTEE PASS 9580 28.5 24.9 114 30.0 24.6 122
TWO OCEAN PLATEAU 9240 -M 28.1 * -M 27.7 *
WILLOW CREEK 8380 36.5 30.4 120 40.5 32.2 126
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Basin wide percent of average 117 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 26.0 23.4 111 24.9 20.1 124
BLACK BEAR 8170 47.8 39.5 121 43.9 40.5 108
CANYON 7870 17.4 13.8 126 18.5 15.5 119
FISHER CREEK 9100 41.3 35.1 118 39.7 36.4 109
MADISON PLATEAU 7750 30.2 25.3 119 31.8 26.8 119
NORTHEAST ENTRANCE 7350 14.3 11.3 127 15.3 12.7 120
PARKER PEAK 9400 28.9 21.7 133 25.0 16.2 154
SYLVAN LAKE 8420 24.7 22.6 109 28.2 20.9 135
THUMB DIVIDE 7980 22.3 19.1 117 20.3 18.9 107
TWO OCEAN PLATEAU 9240 -M 28.1 * -M 27.7 *
WHISKEY CREEK 6800 20.9 17.3 121 23.8 21.0 113
WHITE MILL 8700 28.3 24.4 116 28.4 27.0 105
WOLVERINE 7650 14.6 11.5 127 14.4 12.8 113
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Basin wide percent of average 120 117
WIND RIVER
BURROUGHS CREEK 8750 14.9 14.7 101 15.6 16.2 96
CASTLE CREEK 8400 7.0 -M * 7.9 -M *
COLD SPRINGS 9630 8.5 8.9 96 8.3 10.5 79
DEER PARK 9700 19.1 16.9 113 22.1 21.8 101
HOBBS PARK 10100 14.6 14.8 99 12.7 12.7 100
LITTLE WARM 9370 12.5 11.9 105 12.6 13.3 95
SOUTH PASS 9040 17.4 16.7 104 15.0 18.3 82
ST. LAWRENCE ALT 8620 4.8 7.3 66 6.9 8.7 79
TOGWOTEE PASS 9580 28.5 24.9 114 30.0 24.6 122
TOWNSEND CREEK 8700 8.8 8.7 101 11.1 11.5 97
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Basin wide percent of average 103 98
BIGHORN BASIN
BALD MTN. 9380 21.9 19.6 112 18.1 17.3 105
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.9 8.1 98
BLACKWATER 9780 25.9 24.6 105 25.1 20.5 122
BONE SPRINGS DIV 9350 18.8 16.2 116 15.6 14.5 108
EVENING STAR 9200 31.2 29.8 105 33.1 25.2 131
GRAVE SPRINGS 8550 9.0 9.4 96 9.0 9.6 94
KIRWIN 9550 11.6 11.3 103 12.6 11.1 114
MARQUETTE 8760 2.9 -M * 6.0 9.6 63
MIDDLE POWDER 7760 10.4 11.7 89 11.2 12.2 92
OWL CREEK 8975 5.8 5.5 105 5.8 5.8 100
POWDER RIVER PASS 9480 13.5 10.8 125 15.6 12.2 128
SHELL CREEK 9580 16.5 14.7 112 15.0 13.2 114
SYLVAN LAKE 8420 24.7 22.6 109 28.2 20.9 135
SYLVAN ROAD 7120 16.1 13.0 124 20.5 17.7 116
TIMBER CREEK 7950 4.2 5.8 72 5.1 7.3 70
YOUNTS PEAK 8350 17.4 17.2 101 15.1 16.1 94
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Basin wide percent of average 108 110
SHOSHONE RIVER
BLACKWATER 9780 25.9 24.6 105 25.1 20.5 122
EVENING STAR 9200 31.2 29.8 105 33.1 25.2 131
KIRWIN 9550 11.6 11.3 103 12.6 11.1 114
MARQUETTE 8760 2.9 -M * 6.0 9.6 63
SYLVAN LAKE 8420 24.7 22.6 109 28.2 20.9 135
SYLVAN ROAD 7120 16.1 13.0 124 20.5 17.7 116
YOUNTS PEAK 8350 17.4 17.2 101 15.1 16.1 94
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Basin wide percent of average 107 116
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.0 5.2 154 7.9 8.1 98
BIG GOOSE 7990 8.4 10.4 81 10.1 8.4 120
BONE SPRINGS DIV 9350 18.8 16.2 116 15.6 14.5 108
BURGESS JUNCTION 7880 10.5 11.6 91 11.4 12.0 95
CLOUD PEAK RESERVOIR 9860 15.5 13.1 118 14.2 12.7 112
DOME LAKE 8880 13.4 12.2 110 13.2 13.0 102
GRAVE SPRINGS 8550 9.0 9.4 96 9.0 9.6 94
HANSEN SAWMILL 8360 7.0 6.3 111 7.7 8.1 95
LITTLE GOOSE 8870 9.5 -M * 13.8 -M *
MIDDLE POWDER 7760 10.4 11.7 89 11.2 12.2 92
POWDER RIVER PASS 9480 13.5 10.8 125 15.6 12.2 128
SOLDIER PARK 8720 8.0 -M * 9.1 -M *
SUCKER CREEK 8880 13.0 11.6 112 14.4 13.4 107
TIE CREEK 6870 6.7 5.7 118 10.0 9.7 103
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Basin wide percent of average 108 105
BELLE FOURCHE
BLIND PARK 6890 9.2 8.7 106 16.1 11.0 146
COLE CANYON 5910 7.8 6.8 115 11.7 6.6 177
NORTH RAPID CREEK 6130 8.4 8.2 102 13.7 8.5 161
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Basin wide percent of average 107 159
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 24.6 17.8 138 30.3 19.9 152
COLUMBINE 9160 34.0 25.0 136 35.0 25.1 139
DIVIDE PEAK 8880 24.6 19.8 124 27.6 20.6 134
ELK RIVER 8700 26.0 19.4 134 26.7 19.5 137
JOE WRIGHT 10120 31.8 21.2 150 34.6 24.6 141
NORTH FRENCH CREEK 10130 44.7 29.0 154 -M 24.5 *
OLD BATTLE 10000 43.1 32.1 134 29.4 34.4 85
SAGE CREEK BASIN 7850 21.6 11.5 188 19.0 12.0 158
SOUTH BRUSH CREEK 8440 19.1 13.0 147 22.1 16.2 136
TOWER 10500 55.0 45.3 121 46.2 38.2 121
WEBBER SPRINGS 9250 31.7 26.3 121 36.2 26.5 137
WILLOW CREEK PASS 9540 19.6 11.9 165 17.8 12.7 140
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Basin wide percent of average 138 130
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 31.5 23.5 134 30.4 21.8 139
CASPER MTN. 7900 11.1 14.3 78 13.9 14.2 98
DEADMAN HILL 10220 21.6 16.2 133 21.8 16.7 131
DEER PARK 9700 19.1 16.9 113 22.1 21.8 101
LAPRELE CREEK 8375 13.2 10.9 121 14.0 12.5 112
RENO HILL 8400 14.3 14.0 102 16.7 14.7 114
ROACH 9700 20.6 16.9 122 23.5 18.5 127
SAND LAKE 10050 37.1 32.3 115 34.8 23.9 146
SOUTH PASS 9040 17.4 16.7 104 15.0 18.3 82
WINDY PEAK 7900 10.7 8.0 134 13.1 10.4 126
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Basin wide percent of average 116 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.2 * 14.7 15.7 94
DIVIDE PEAK 8880 24.6 19.8 124 27.6 20.6 134
OLD BATTLE 10000 43.1 32.1 134 29.4 34.4 85
SANDSTONE RS 8150 18.1 14.9 121 26.0 18.6 140
WHISKEY PARK 8950 -M 30.2 * 40.8 28.5 143
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Basin wide percent of average 128 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.5 14.5 107 15.5 13.3 117
BLIND BULL SUM 8650 31.4 28.1 112 22.0 22.3 99
EAST RIM DIVIDE 7930 15.8 13.2 120 13.2 12.1 109
ELKHART PARK G.S. 9400 13.7 13.4 102 13.5 13.3 102
GROS VENTRE SUMMIT 8750 14.8 14.2 104 14.3 12.9 111
GUNSIGHT PASS 9820 17.7 -M * 16.9 -M *
KENDALL R.S. 7740 14.1 14.6 97 15.6 14.6 107
LOOMIS PARK 8240 20.8 17.4 120 20.5 17.4 118
NEW FORK LAKE 8340 13.1 11.2 117 11.8 11.3 104
POCKET CREEK 9360 12.7 -M * 14.5 -M *
SNIDER BASIN 8060 21.1 14.6 145 19.5 16.1 121
SPRING CREEK DIVIDE 9000 34.9 26.7 131 32.1 26.5 121
TRIPLE PEAK 8500 32.0 25.0 128 32.7 24.8 132
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Basin wide percent of average 118 114
LOWER GREEN RIVER
HAMS FORK 7840 17.4 12.1 144 15.4 12.2 126
HEWINTA 9519 13.5 11.9 113 17.1 14.5 118
HICKERSON PARK 9145 8.8 7.5 117 10.1 7.8 129
HOLE-IN-ROCK 9150 8.5 7.1 120 10.7 7.4 145
INDIAN CREEK 9425 31.9 27.9 114 27.7 25.4 109
KELLEY R.S. 8180 21.3 17.0 125 24.1 20.3 119
STEEL CREEK PARK 10200 17.3 15.7 110 19.8 16.1 123
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Basin wide percent of average 120 120
UPPER BEAR RIVER
BUG LAKE 7950 -M 21.0 * -M 19.2 *
HAYDEN FORK 9212 23.9 16.4 146 29.0 20.9 139
KELLEY R.S. 8180 21.3 17.0 125 24.1 20.3 119
LILY LAKE 9156 21.4 13.1 163 21.5 17.4 124
MONTE CRISTO 8960 38.7 29.9 129 37.4 25.5 147
SALT RIVER SUMMIT 7760 17.9 14.5 123 21.9 18.8 116
TRIAL LAKE 9992 35.8 25.1 143 32.9 24.9 132
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Basin wide percent of average 137 131
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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.