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: MARCH 25 , 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 21.0 18.0 117 23.4 21.0 111
COTTONWOOD CREEK 7670 26.9 23.3 115 33.9 26.7 127
GRAND TARGHEE 9260 45.9 -M * -M -M *
GRANITE CREEK 6770 21.4 18.6 115 22.6 19.6 115
GRASSY LAKE 7265 38.3 34.9 110 39.3 35.3 111
GROS VENTRE SUMMIT 8750 14.5 13.9 104 14.0 12.6 111
GUNSIGHT PASS 9820 16.8 -M * 16.3 -M *
LEWIS LAKE DIVIDE 7850 39.2 34.8 113 -M 36.0 *
PHILLIPS BENCH 8200 30.9 28.2 110 30.8 28.4 108
SALT RIVER SUMMIT 7760 17.4 14.1 123 21.4 18.2 118
SNAKE RIVER STATION 6920 -M 19.0 * 25.5 21.9 116
SPRING CREEK DIVIDE 9000 33.9 25.9 131 31.4 25.8 122
THUMB DIVIDE 7980 21.6 18.7 116 19.9 18.4 108
TOGWOTEE PASS 9580 27.8 24.2 115 29.4 23.9 123
TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 *
WILLOW CREEK 8380 35.1 29.7 118 38.9 31.3 124
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Basin wide percent of average 115 117
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 25.6 22.9 112 24.6 19.6 126
BLACK BEAR 8170 45.9 38.3 120 42.2 39.4 107
CANYON 7870 17.1 13.4 128 18.1 15.1 120
FISHER CREEK 9100 40.1 34.0 118 38.6 35.5 109
MADISON PLATEAU 7750 29.0 24.4 119 30.2 26.0 116
NORTHEAST ENTRANCE 7350 13.7 11.1 123 14.9 12.3 121
PARKER PEAK 9400 28.4 21.0 135 24.6 15.8 156
SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135
THUMB DIVIDE 7980 21.6 18.7 116 19.9 18.4 108
TWO OCEAN PLATEAU 9240 -M 27.2 * -M 27.0 *
WHISKEY CREEK 6800 20.2 16.7 121 23.0 20.4 113
WHITE MILL 8700 27.3 23.6 116 27.6 26.3 105
WOLVERINE 7650 14.7 11.5 128 14.4 12.5 115
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Basin wide percent of average 119 117
WIND RIVER
BURROUGHS CREEK 8750 14.7 14.3 103 15.4 15.8 97
CASTLE CREEK 8400 6.8 -M * 7.6 -M *
COLD SPRINGS 9630 8.2 8.5 96 7.9 10.0 79
DEER PARK 9700 18.4 16.5 112 21.3 21.1 101
HOBBS PARK 10100 13.9 14.1 99 12.2 12.1 101
LITTLE WARM 9370 12.2 11.4 107 12.4 12.8 97
SOUTH PASS 9040 17.0 16.2 105 14.6 17.7 82
ST. LAWRENCE ALT 8620 4.7 6.9 68 6.7 8.4 80
TOGWOTEE PASS 9580 27.8 24.2 115 29.4 23.9 123
TOWNSEND CREEK 8700 8.2 8.2 100 10.4 10.9 95
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Basin wide percent of average 104 98
BIGHORN BASIN
BALD MTN. 9380 21.2 18.9 112 17.5 16.7 105
BEAR TRAP MEADOW 8200 7.6 5.3 143 7.6 7.8 97
BLACKWATER 9780 25.4 23.7 107 24.7 19.9 124
BONE SPRINGS DIV 9350 18.0 15.5 116 15.1 13.9 109
EVENING STAR 9200 30.9 28.9 107 32.8 24.6 133
GRAVE SPRINGS 8550 8.6 8.9 97 8.6 9.3 92
KIRWIN 9550 10.9 10.9 100 12.1 10.7 113
MARQUETTE 8760 2.6 -M * 6.0 9.1 66
MIDDLE POWDER 7760 9.9 11.2 88 11.0 11.7 94
OWL CREEK 8975 5.2 5.2 100 5.3 5.4 98
POWDER RIVER PASS 9480 13.1 10.4 126 15.2 11.8 129
SHELL CREEK 9580 15.7 14.1 111 14.3 12.7 113
SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135
SYLVAN ROAD 7120 15.8 12.5 126 20.2 17.3 117
TIMBER CREEK 7950 3.6 5.4 67 4.5 6.9 65
YOUNTS PEAK 8350 17.1 16.7 102 14.9 15.7 95
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Basin wide percent of average 108 111
SHOSHONE RIVER
BLACKWATER 9780 25.4 23.7 107 24.7 19.9 124
EVENING STAR 9200 30.9 28.9 107 32.8 24.6 133
KIRWIN 9550 10.9 10.9 100 12.1 10.7 113
MARQUETTE 8760 2.6 -M * 6.0 9.1 66
SYLVAN LAKE 8420 24.0 21.9 110 27.6 20.4 135
SYLVAN ROAD 7120 15.8 12.5 126 20.2 17.3 117
YOUNTS PEAK 8350 17.1 16.7 102 14.9 15.7 95
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Basin wide percent of average 108 118
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.6 5.3 143 7.6 7.8 97
BIG GOOSE 7990 7.4 9.8 76 9.1 8.0 114
BONE SPRINGS DIV 9350 18.0 15.5 116 15.1 13.9 109
BURGESS JUNCTION 7880 9.8 11.0 89 10.8 11.5 94
CLOUD PEAK RESERVOIR 9860 14.6 12.6 116 13.6 12.0 113
DOME LAKE 8880 12.4 11.7 106 12.1 12.4 98
GRAVE SPRINGS 8550 8.6 8.9 97 8.6 9.3 92
HANSEN SAWMILL 8360 6.4 6.3 102 7.1 7.7 92
LITTLE GOOSE 8870 8.2 -M * 12.5 -M *
MIDDLE POWDER 7760 9.9 11.2 88 11.0 11.7 94
POWDER RIVER PASS 9480 13.1 10.4 126 15.2 11.8 129
SOLDIER PARK 8720 7.0 -M * 8.1 -M *
SUCKER CREEK 8880 11.8 11.1 106 13.1 12.8 102
TIE CREEK 6870 6.0 5.9 102 9.0 9.4 96
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Basin wide percent of average 105 103
BELLE FOURCHE
BLIND PARK 6890 8.9 8.7 102 15.5 10.7 145
COLE CANYON 5910 7.4 6.7 110 11.1 6.4 173
NORTH RAPID CREEK 6130 8.1 8.0 101 13.3 8.3 160
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Basin wide percent of average 104 157
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 24.0 17.7 136 30.2 19.4 156
COLUMBINE 9160 31.9 24.7 129 32.9 24.4 135
DIVIDE PEAK 8880 23.0 19.1 120 26.4 20.0 132
ELK RIVER 8700 24.3 18.9 129 25.5 18.9 135
JOE WRIGHT 10120 29.7 20.4 146 33.3 23.8 140
NORTH FRENCH CREEK 10130 41.7 27.9 149 -M 23.8 *
OLD BATTLE 10000 40.3 31.2 129 29.2 33.5 87
SAGE CREEK BASIN 7850 20.3 11.1 183 17.9 11.6 154
SOUTH BRUSH CREEK 8440 18.0 12.7 142 20.9 15.6 134
TOWER 10500 51.2 43.9 117 46.2 37.1 125
WEBBER SPRINGS 9250 29.8 25.8 116 34.6 25.8 134
WILLOW CREEK PASS 9540 18.5 11.4 162 17.1 12.3 139
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Basin wide percent of average 133 130
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 30.3 22.7 133 29.9 21.1 142
CASPER MTN. 7900 10.8 13.6 79 13.5 13.5 100
DEADMAN HILL 10220 20.7 15.5 134 21.2 16.1 132
DEER PARK 9700 18.4 16.5 112 21.3 21.1 101
LAPRELE CREEK 8375 12.6 10.7 118 13.6 12.0 113
RENO HILL 8400 13.8 13.3 104 16.3 14.0 116
ROACH 9700 19.8 16.3 121 22.7 17.9 127
SAND LAKE 10050 35.3 31.2 113 33.6 23.1 145
SOUTH PASS 9040 17.0 16.2 105 14.6 17.7 82
WINDY PEAK 7900 10.5 7.8 135 12.8 10.1 127
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Basin wide percent of average 116 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 11.5 * 13.4 15.1 89
DIVIDE PEAK 8880 23.0 19.1 120 26.4 20.0 132
OLD BATTLE 10000 40.3 31.2 129 29.2 33.5 87
SANDSTONE RS 8150 15.9 14.9 107 24.3 18.2 134
WHISKEY PARK 8950 -M 29.4 * 38.5 27.7 139
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Basin wide percent of average 121 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.0 14.1 106 15.0 13.0 115
BLIND BULL SUM 8650 30.5 27.4 111 21.5 21.7 99
EAST RIM DIVIDE 7930 15.3 12.8 120 12.8 11.8 108
ELKHART PARK G.S. 9400 13.2 13.1 101 13.0 12.9 101
GROS VENTRE SUMMIT 8750 14.5 13.9 104 14.0 12.6 111
GUNSIGHT PASS 9820 16.8 -M * 16.3 -M *
KENDALL R.S. 7740 13.7 14.6 94 15.1 14.3 106
LOOMIS PARK 8240 20.1 17.1 118 19.9 17.0 117
NEW FORK LAKE 8340 12.7 11.0 115 11.4 11.0 104
POCKET CREEK 9360 12.0 -M * 14.0 -M *
SNIDER BASIN 8060 20.6 14.3 144 19.2 15.7 122
SPRING CREEK DIVIDE 9000 33.9 25.9 131 31.4 25.8 122
TRIPLE PEAK 8500 31.0 24.5 127 32.0 24.1 133
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Basin wide percent of average 117 114
LOWER GREEN RIVER
HAMS FORK 7840 16.9 12.4 136 15.1 11.9 127
HEWINTA 9519 13.0 11.4 114 16.2 13.9 117
HICKERSON PARK 9145 8.7 7.1 123 9.6 7.5 128
HOLE-IN-ROCK 9150 8.3 6.8 122 10.2 7.0 146
INDIAN CREEK 9425 30.9 27.1 114 26.9 24.6 109
KELLEY R.S. 8180 20.6 16.6 124 23.5 19.8 119
STEEL CREEK PARK 10200 16.5 15.2 109 19.1 15.4 124
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Basin wide percent of average 119 120
UPPER BEAR RIVER
BUG LAKE 7950 -M 20.4 * -M 18.7 *
HAYDEN FORK 9212 22.8 16.0 143 28.0 20.2 139
KELLEY R.S. 8180 20.6 16.6 124 23.5 19.8 119
LILY LAKE 9156 20.5 12.7 161 21.1 16.8 126
MONTE CRISTO 8960 37.0 29.3 126 34.6 24.7 140
SALT RIVER SUMMIT 7760 17.4 14.1 123 21.4 18.2 118
TRIAL LAKE 9992 34.3 24.5 140 32.7 24.2 135
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Basin wide percent of average 135 130
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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.