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: APRIL 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 23.8 18.0 132 25.8 22.1 117
COTTONWOOD CREEK 7670 30.5 24.4 125 37.1 28.5 130
GRAND TARGHEE 9260 50.1 -M * 38.4 -M *
GRANITE CREEK 6770 23.1 18.3 126 25.2 20.5 123
GRASSY LAKE 7265 41.9 36.8 114 43.5 37.2 117
GROS VENTRE SUMMIT 8750 15.1 14.6 103 15.1 13.4 113
GUNSIGHT PASS 9820 19.0 -M * 18.0 -M *
LEWIS LAKE DIVIDE 7850 43.7 36.4 120 -M 38.0 *
PHILLIPS BENCH 8200 35.1 29.9 117 34.8 30.0 116
SALT RIVER SUMMIT 7760 18.0 14.9 121 22.7 19.5 116
SNAKE RIVER STATION 6920 -M 19.0 * 28.0 23.0 122
SPRING CREEK DIVIDE 9000 37.3 27.6 135 34.1 27.4 124
THUMB DIVIDE 7980 23.2 19.3 120 21.0 19.6 107
TOGWOTEE PASS 9580 30.7 25.8 119 32.3 25.6 126
TWO OCEAN PLATEAU 9240 -M 29.2 * -M 28.7 *
WILLOW CREEK 8380 39.1 31.2 125 42.4 33.4 127
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Basin wide percent of average 122 121
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 28.8 24.3 119 27.0 20.8 130
BLACK BEAR 8170 49.8 40.4 123 45.4 41.8 109
CANYON 7870 18.4 14.0 131 19.7 16.0 123
FISHER CREEK 9100 44.7 36.1 124 41.6 37.7 110
MADISON PLATEAU 7750 31.2 25.9 120 33.0 27.8 119
NORTHEAST ENTRANCE 7350 15.5 11.2 138 16.9 13.1 129
PARKER PEAK 9400 31.3 22.4 140 27.3 16.9 162
SYLVAN LAKE 8420 26.3 23.3 113 29.9 21.7 138
THUMB DIVIDE 7980 23.2 19.3 120 21.0 19.6 107
TWO OCEAN PLATEAU 9240 -M 29.2 * -M 28.7 *
WHISKEY CREEK 6800 21.3 17.7 120 24.6 21.7 113
WHITE MILL 8700 31.0 25.1 124 31.0 28.0 111
WOLVERINE 7650 15.8 11.7 135 15.3 13.2 116
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Basin wide percent of average 124 120
WIND RIVER
BURROUGHS CREEK 8750 17.3 14.9 116 18.1 16.9 107
CASTLE CREEK 8400 7.3 -M * 8.7 -M *
COLD SPRINGS 9630 8.2 8.7 94 8.6 11.2 77
DEER PARK 9700 19.3 17.3 112 22.7 22.9 99
HOBBS PARK 10100 15.6 15.8 99 13.7 13.5 101
LITTLE WARM 9370 13.0 12.3 106 13.4 13.9 96
SOUTH PASS 9040 17.6 17.2 102 15.5 19.2 81
ST. LAWRENCE ALT 8620 4.3 7.5 57 7.5 9.3 81
TOGWOTEE PASS 9580 30.7 25.8 119 32.3 25.6 126
TOWNSEND CREEK 8700 9.1 9.5 96 11.7 12.2 96
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Basin wide percent of average 105 99
BIGHORN BASIN
BALD MTN. 9380 24.5 20.5 120 19.5 18.1 108
BEAR TRAP MEADOW 8200 8.8 5.1 173 8.6 8.7 99
BLACKWATER 9780 28.8 25.5 113 27.4 21.4 128
BONE SPRINGS DIV 9350 21.0 16.9 124 17.3 15.2 114
EVENING STAR 9200 35.2 30.8 114 37.4 26.2 143
GRAVE SPRINGS 8550 9.0 9.9 91 9.2 10.2 90
KIRWIN 9550 12.8 11.8 108 13.8 11.7 118
MARQUETTE 8760 3.5 -M * 6.5 10.3 63
MIDDLE POWDER 7760 10.4 12.5 83 11.4 12.9 88
OWL CREEK 8975 5.6 5.7 98 6.0 6.2 97
POWDER RIVER PASS 9480 15.9 11.3 141 18.3 12.9 142
SHELL CREEK 9580 18.6 15.3 122 16.8 13.9 121
SYLVAN LAKE 8420 26.3 23.3 113 29.9 21.7 138
SYLVAN ROAD 7120 17.0 12.8 133 22.3 18.2 123
TIMBER CREEK 7950 4.2 5.9 71 5.3 7.8 68
YOUNTS PEAK 8350 19.2 17.6 109 16.6 16.7 99
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Basin wide percent of average 114 115
SHOSHONE RIVER
BLACKWATER 9780 28.8 25.5 113 27.4 21.4 128
EVENING STAR 9200 35.2 30.8 114 37.4 26.2 143
KIRWIN 9550 12.8 11.8 108 13.8 11.7 118
MARQUETTE 8760 3.5 -M * 6.5 10.3 63
SYLVAN LAKE 8420 26.3 23.3 113 29.9 21.7 138
SYLVAN ROAD 7120 17.0 12.8 133 22.3 18.2 123
YOUNTS PEAK 8350 19.2 17.6 109 16.6 16.7 99
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Basin wide percent of average 114 122
POWDER-TONGUE
BEAR TRAP MEADOW 8200 8.8 5.1 173 8.6 8.7 99
BIG GOOSE 7990 9.1 11.4 80 10.9 9.2 118
BONE SPRINGS DIV 9350 21.0 16.9 124 17.3 15.2 114
BURGESS JUNCTION 7880 11.5 12.3 93 12.3 12.7 97
CLOUD PEAK RESERVOIR 9860 17.1 14.1 121 15.7 13.5 116
DOME LAKE 8880 14.7 13.1 112 13.9 13.7 101
GRAVE SPRINGS 8550 9.0 9.9 91 9.2 10.2 90
HANSEN SAWMILL 8360 7.2 6.5 111 8.3 8.6 97
LITTLE GOOSE 8870 10.4 -M * 14.8 -M *
MIDDLE POWDER 7760 10.4 12.5 83 11.4 12.9 88
POWDER RIVER PASS 9480 15.9 11.3 141 18.3 12.9 142
SOLDIER PARK 8720 8.7 -M * 9.8 -M *
SUCKER CREEK 8880 14.1 12.5 113 15.7 14.2 111
TIE CREEK 6870 6.8 6.3 108 10.9 10.4 105
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Basin wide percent of average 110 107
BELLE FOURCHE
BLIND PARK 6890 10.2 8.2 124 17.4 11.5 151
COLE CANYON 5910 7.9 7.1 111 12.7 7.0 181
NORTH RAPID CREEK 6130 8.5 8.7 98 14.6 8.9 164
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Basin wide percent of average 111 163
UPPER N. PLATTE RIVER
CINNABAR PARK 9574 26.0 18.0 144 34.1 20.7 165
COLUMBINE 9160 36.1 25.1 144 36.9 26.0 142
DIVIDE PEAK 8880 24.2 20.4 119 29.3 21.4 137
ELK RIVER 8700 26.3 20.0 132 27.9 20.2 138
JOE WRIGHT 10120 34.4 22.3 154 37.3 25.7 145
NORTH FRENCH CREEK 10130 48.6 30.7 158 -M 25.5 *
OLD BATTLE 10000 44.9 33.3 135 46.3 35.6 130
SAGE CREEK BASIN 7850 21.4 11.8 181 19.8 12.4 160
SOUTH BRUSH CREEK 8440 19.9 13.4 149 23.4 17.0 138
TOWER 10500 58.3 47.2 124 47.1 39.6 119
WEBBER SPRINGS 9250 32.2 26.4 122 37.7 27.6 137
WILLOW CREEK PASS 9540 20.8 12.7 164 18.9 13.3 142
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Basin wide percent of average 140 138
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 33.2 24.8 134 32.3 22.9 141
CASPER MTN. 7900 11.5 15.4 75 15.0 15.2 99
DEADMAN HILL 10220 21.4 17.1 125 23.1 17.6 131
DEER PARK 9700 19.3 17.3 112 22.7 22.9 99
LAPRELE CREEK 8375 13.7 11.0 125 15.2 13.1 116
RENO HILL 8400 15.5 15.0 103 18.3 15.8 116
ROACH 9700 21.4 17.8 120 24.7 19.3 128
SAND LAKE 10050 39.7 33.6 118 -M 25.0 *
SOUTH PASS 9040 17.6 17.2 102 15.5 19.2 81
WINDY PEAK 7900 10.5 8.4 125 13.9 11.0 126
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Basin wide percent of average 115 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M 10.3 * 15.8 16.4 96
DIVIDE PEAK 8880 24.2 20.4 119 29.3 21.4 137
OLD BATTLE 10000 44.9 33.3 135 46.3 35.6 130
SANDSTONE RS 8150 18.7 14.4 130 26.9 19.3 139
WHISKEY PARK 8950 -M 30.7 * 42.8 29.6 145
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Basin wide percent of average 129 132
UPPER GREEN RIVER
BIG SANDY OPENING 9080 16.2 15.0 108 16.3 13.8 118
BLIND BULL SUM 8650 35.6 28.7 124 24.3 23.0 106
EAST RIM DIVIDE 7930 15.8 13.6 116 13.9 12.5 111
ELKHART PARK G.S. 9400 14.2 13.8 103 14.0 13.8 101
GROS VENTRE SUMMIT 8750 15.1 14.6 103 15.1 13.4 113
GUNSIGHT PASS 9820 19.0 -M * 18.0 -M *
KENDALL R.S. 7740 14.1 14.4 98 16.2 15.0 108
LOOMIS PARK 8240 21.7 17.5 124 21.9 18.0 122
NEW FORK LAKE 8340 13.4 11.5 117 12.1 11.7 103
POCKET CREEK 9360 13.0 -M * 15.0 -M *
SNIDER BASIN 8060 21.4 14.9 144 20.1 16.7 120
SPRING CREEK DIVIDE 9000 37.3 27.6 135 34.1 27.4 124
TRIPLE PEAK 8500 36.0 25.6 141 36.0 25.7 140
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Basin wide percent of average 122 117
LOWER GREEN RIVER
HAMS FORK 7840 16.9 11.4 148 16.0 12.7 126
HEWINTA 9519 12.2 12.5 98 18.3 15.2 120
HICKERSON PARK 9145 6.9 8.1 85 10.5 8.3 127
HOLE-IN-ROCK 9150 8.0 7.4 108 11.6 7.8 149
INDIAN CREEK 9425 33.2 28.9 115 28.6 26.4 108
KELLEY R.S. 8180 22.0 17.4 126 24.8 21.1 118
STEEL CREEK PARK 10200 18.4 16.4 112 21.1 17.0 124
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Basin wide percent of average 115 121
UPPER BEAR RIVER
BUG LAKE 7950 31.6 21.6 146 30.4 19.9 153
HAYDEN FORK 9212 24.3 16.9 144 30.8 21.8 141
KELLEY R.S. 8180 22.0 17.4 126 24.8 21.1 118
LILY LAKE 9156 23.0 14.3 161 23.3 18.2 128
MONTE CRISTO 8960 40.3 30.4 133 37.7 26.5 142
SALT RIVER SUMMIT 7760 18.0 14.9 121 22.7 19.5 116
TRIAL LAKE 9992 38.3 25.8 148 35.2 25.9 136
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Basin wide percent of average 140 134
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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.