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 FRIDAY: APRIL 1 , 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 22.2 18.1 123 24.2 21.7 112
COTTONWOOD CREEK 7670 28.7 24.2 119 35.8 27.8 129
GRAND TARGHEE 9260 48.8 -M * -M -M *
GRANITE CREEK 6770 22.9 18.6 123 24.3 20.1 121
GRASSY LAKE 7265 40.6 36.1 112 41.6 36.4 114
GROS VENTRE SUMMIT 8750 14.9 14.4 103 14.5 13.0 112
GUNSIGHT PASS 9820 18.4 -M * 17.6 -M *
LEWIS LAKE DIVIDE 7850 41.8 35.8 117 -M 37.2 *
PHILLIPS BENCH 8200 33.6 29.2 115 33.3 29.4 113
SALT RIVER SUMMIT 7760 17.7 14.6 121 22.3 19.0 117
SNAKE RIVER STATION 6920 -M 19.2 * 26.8 22.5 119
SPRING CREEK DIVIDE 9000 36.5 26.9 136 33.4 26.8 125
THUMB DIVIDE 7980 22.6 19.2 118 20.5 19.1 107
TOGWOTEE PASS 9580 29.5 25.2 117 31.0 24.9 124
TWO OCEAN PLATEAU 9240 -M 28.4 * -M 28.0 *
WILLOW CREEK 8380 37.4 30.6 122 41.3 32.6 127
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Basin wide percent of average 119 119
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 27.2 23.6 115 25.9 20.3 128
BLACK BEAR 8170 48.5 39.8 122 44.4 40.9 109
CANYON 7870 17.5 13.9 126 18.8 15.6 121
FISHER CREEK 9100 42.9 35.4 121 40.7 36.8 111
MADISON PLATEAU 7750 30.6 25.5 120 32.2 27.1 119
NORTHEAST ENTRANCE 7350 15.0 11.3 133 16.2 12.8 127
PARKER PEAK 9400 29.8 21.9 136 25.9 16.4 158
SYLVAN LAKE 8420 25.2 22.8 111 28.7 21.1 136
THUMB DIVIDE 7980 22.6 19.2 118 20.5 19.1 107
TWO OCEAN PLATEAU 9240 -M 28.4 * -M 28.0 *
WHISKEY CREEK 6800 21.4 17.4 123 24.1 21.2 114
WHITE MILL 8700 29.5 24.6 120 29.6 27.3 108
WOLVERINE 7650 15.4 11.6 133 15.0 12.9 116
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Basin wide percent of average 122 119
WIND RIVER
BURROUGHS CREEK 8750 15.8 14.8 107 16.5 16.4 101
CASTLE CREEK 8400 6.8 -M * 8.0 -M *
COLD SPRINGS 9630 8.4 9.0 93 8.5 10.7 79
DEER PARK 9700 19.1 17.1 112 22.2 22.1 100
HOBBS PARK 10100 14.6 15.1 97 13.0 12.9 101
LITTLE WARM 9370 12.7 12.0 106 12.9 13.5 96
SOUTH PASS 9040 17.5 16.7 105 15.2 18.6 82
ST. LAWRENCE ALT 8620 4.9 7.4 66 7.0 8.9 79
TOGWOTEE PASS 9580 29.5 25.2 117 31.0 24.9 124
TOWNSEND CREEK 8700 8.8 8.8 100 11.2 11.7 96
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Basin wide percent of average 104 98
BIGHORN BASIN
BALD MTN. 9380 24.0 19.9 121 19.3 17.5 110
BEAR TRAP MEADOW 8200 8.8 5.2 169 8.2 8.3 99
BLACKWATER 9780 26.9 24.8 108 25.8 20.7 125
BONE SPRINGS DIV 9350 20.3 16.4 124 16.8 14.7 114
EVENING STAR 9200 33.2 30.1 110 35.3 25.5 138
GRAVE SPRINGS 8550 9.2 9.4 98 9.2 9.7 95
KIRWIN 9550 11.9 11.5 103 13.2 11.3 117
MARQUETTE 8760 3.1 -M * 6.4 9.8 65
MIDDLE POWDER 7760 10.9 11.8 92 11.5 12.4 93
OWL CREEK 8975 5.8 5.6 104 6.0 5.9 102
POWDER RIVER PASS 9480 15.0 10.9 138 17.4 12.4 140
SHELL CREEK 9580 18.2 14.9 122 16.4 13.4 122
SYLVAN LAKE 8420 25.2 22.8 111 28.7 21.1 136
SYLVAN ROAD 7120 16.4 12.9 127 21.1 17.8 119
TIMBER CREEK 7950 4.3 5.8 74 5.1 7.4 69
YOUNTS PEAK 8350 18.1 17.3 105 15.8 16.3 97
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Basin wide percent of average 113 114
SHOSHONE RIVER
BLACKWATER 9780 26.9 24.8 108 25.8 20.7 125
EVENING STAR 9200 33.2 30.1 110 35.3 25.5 138
KIRWIN 9550 11.9 11.5 103 13.2 11.3 117
MARQUETTE 8760 3.1 -M * 6.4 9.8 65
SYLVAN LAKE 8420 25.2 22.8 111 28.7 21.1 136
SYLVAN ROAD 7120 16.4 12.9 127 21.1 17.8 119
YOUNTS PEAK 8350 18.1 17.3 105 15.8 16.3 97
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Basin wide percent of average 110 119
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.8 5.2 169 8.2 8.3 99
BIG GOOSE 7990 8.6 10.7 80 10.4 8.5 122
BONE SPRINGS DIV 9350 20.3 16.4 124 16.8 14.7 114
BURGESS JUNCTION 7880 10.9 11.7 93 11.9 12.2 98
CLOUD PEAK RESERVOIR 9860 16.0 13.5 119 14.7 12.9 114
DOME LAKE 8880 14.2 12.6 113 13.5 13.2 102
GRAVE SPRINGS 8550 9.2 9.4 98 9.2 9.7 95
HANSEN SAWMILL 8360 7.2 6.5 111 7.9 8.2 96
LITTLE GOOSE 8870 9.7 -M * 14.1 -M *
MIDDLE POWDER 7760 10.9 11.8 92 11.5 12.4 93
POWDER RIVER PASS 9480 15.0 10.9 138 17.4 12.4 140
SOLDIER PARK 8720 8.2 -M * 9.2 -M *
SUCKER CREEK 8880 13.6 11.8 115 14.9 13.6 110
TIE CREEK 6870 6.9 6.1 113 10.5 9.9 106
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Basin wide percent of average 112 108
BELLE FOURCHE
BLIND PARK 6890 10.3 8.7 118 17.0 11.1 153
COLE CANYON 5910 8.5 6.9 123 12.4 6.7 185
NORTH RAPID CREEK 6130 8.9 8.3 107 14.3 8.6 166
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Basin wide percent of average 116 166
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 25.7 17.9 144 33.0 20.1 164
COLUMBINE 9160 35.6 25.0 142 36.1 25.3 143
DIVIDE PEAK 8880 24.8 20.0 124 28.1 20.8 135
ELK RIVER 8700 26.4 19.6 135 27.2 19.7 138
JOE WRIGHT 10120 33.1 21.5 154 35.1 24.9 141
NORTH FRENCH CREEK 10130 46.5 29.5 158 48.4 24.8 195
OLD BATTLE 10000 43.7 32.4 135 29.6 34.8 85
SAGE CREEK BASIN 7850 21.6 11.6 186 19.0 12.1 157
SOUTH BRUSH CREEK 8440 18.9 13.2 143 22.2 16.4 135
TOWER 10500 57.1 45.8 125 46.3 38.6 120
WEBBER SPRINGS 9250 31.9 26.4 121 36.7 26.8 137
WILLOW CREEK PASS 9540 19.6 12.1 162 17.9 12.9 139
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Basin wide percent of average 140 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 32.7 23.9 137 31.1 22.1 141
CASPER MTN. 7900 10.9 14.6 75 13.8 14.4 96
DEADMAN HILL 10220 22.1 16.4 135 22.3 17.0 131
DEER PARK 9700 19.1 17.1 112 22.2 22.1 100
LAPRELE CREEK 8375 13.1 11.0 119 14.2 12.6 113
RENO HILL 8400 14.2 14.3 99 16.9 15.0 113
ROACH 9700 21.2 17.2 123 24.3 18.7 130
SAND LAKE 10050 38.1 32.7 117 36.0 24.2 149
SOUTH PASS 9040 17.5 16.7 105 15.2 18.6 82
WINDY PEAK 7900 10.6 8.1 131 13.2 10.6 125
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Basin wide percent of average 116 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.5 11.0 105 15.0 15.9 94
DIVIDE PEAK 8880 24.8 20.0 124 28.1 20.8 135
OLD BATTLE 10000 43.7 32.4 135 29.6 34.8 85
SANDSTONE RS 8150 18.3 14.8 124 26.2 18.8 139
WHISKEY PARK 8950 37.5 30.4 123 42.0 28.8 146
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Basin wide percent of average 125 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.6 14.7 106 15.7 13.5 116
BLIND BULL SUM 8650 33.7 28.3 119 23.6 22.5 105
EAST RIM DIVIDE 7930 16.2 13.3 122 13.6 12.2 111
ELKHART PARK G.S. 9400 14.3 13.6 105 13.9 13.5 103
GROS VENTRE SUMMIT 8750 14.9 14.4 103 14.5 13.0 112
GUNSIGHT PASS 9820 18.4 -M * 17.6 -M *
KENDALL R.S. 7740 14.1 14.6 97 15.7 14.7 107
LOOMIS PARK 8240 22.0 17.5 126 21.4 17.6 122
NEW FORK LAKE 8340 13.2 11.3 117 12.1 11.4 106
POCKET CREEK 9360 12.7 -M * 14.7 -M *
SNIDER BASIN 8060 21.4 14.7 146 19.9 16.3 122
SPRING CREEK DIVIDE 9000 36.5 26.9 136 33.4 26.8 125
TRIPLE PEAK 8500 34.2 25.2 136 34.8 25.1 139
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Basin wide percent of average 121 117
LOWER GREEN RIVER
HAMS FORK 7840 17.4 12.0 145 15.6 12.3 127
HEWINTA 9519 13.5 12.1 112 17.3 14.7 118
HICKERSON PARK 9145 8.7 7.7 113 10.2 8.0 128
HOLE-IN-ROCK 9150 8.7 7.2 121 10.8 7.5 144
INDIAN CREEK 9425 32.3 28.2 115 28.0 25.7 109
KELLEY R.S. 8180 21.4 17.1 125 24.4 20.6 118
STEEL CREEK PARK 10200 17.5 15.9 110 19.9 16.3 122
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Basin wide percent of average 119 120
UPPER BEAR RIVER
BUG LAKE 7950 30.5 21.2 144 29.8 19.5 153
HAYDEN FORK 9212 24.1 16.6 145 29.2 21.2 138
KELLEY R.S. 8180 21.4 17.1 125 24.4 20.6 118
LILY LAKE 9156 21.6 13.5 160 21.8 17.6 124
MONTE CRISTO 8960 39.2 30.1 130 37.5 25.7 146
SALT RIVER SUMMIT 7760 17.7 14.6 121 22.3 19.0 117
TRIAL LAKE 9992 36.0 25.3 142 34.2 25.2 136
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Basin wide percent of average 138 134
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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.