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 THURSDAY: FEBRUARY 20 , 2014
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 16.7 13.0 128 17.8 16.3 109
BLACK BEAR 8170 27.2 27.8 98 26.1 29.0 90
BLIND BULL SUM 8650 25.3 16.9 150 17.4 15.1 115
COTTONWOOD CREEK 7670 23.0 15.5 148 24.3 18.4 132
EAST RIM DIVIDE 7930 12.6 7.5 168 11.2 8.9 126
GRAND TARGHEE 9260 33.7 27.6 122 25.0 23.7 105
GRANITE CREEK 6770 16.7 13.0 128 17.1 15.6 110
GRASSY LAKE 7265 26.5 24.7 107 25.9 27.9 93
GROS VENTRE SUMMIT 8750 11.4 9.2 124 10.6 9.5 112
GUNSIGHT PASS 9820 14.2 9.9 143 13.0 10.2 127
LEWIS LAKE DIVIDE 7850 24.7 24.2 102 25.8 27.3 95
PHILLIPS BENCH 8200 23.2 18.6 125 23.4 21.3 110
SALT RIVER SUMMIT 7760 13.3 9.8 136 14.6 12.6 116
SNAKE RIVER STATION 6920 14.5 13.6 107 17.4 17.7 98
SPRING CREEK DIVIDE 9000 25.8 17.0 152 24.1 18.2 132
THUMB DIVIDE 7980 11.6 11.1 105 11.3 13.8 82
TOGWOTEE PASS 9580 23.2 16.8 138 22.8 18.3 125
TWO OCEAN PLATEAU 9240 27.4 20.2 136 20.0 20.4 98
WILLOW CREEK 8380 28.2 20.5 138 30.0 25.1 120
YOUNTS PEAK 8350 -M 11.1 * -M 12.0 *
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Basin Index (%) 126 108
MADISON-GALLATIN
BLACK BEAR 8170 27.2 27.8 98 26.1 29.0 90
CANYON 7870 10.4 9.8 106 11.9 12.4 96
MADISON PLATEAU 7750 15.6 16.5 95 16.0 19.8 81
WEST YELLOWSTONE 6700 9.5 8.1 117 10.5 11.0 95
WHISKEY CREEK 6800 11.5 11.3 102 13.4 15.3 88
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Basin Index (%) 101 89
YELLOWSTONE
BEARTOOTH LAKE 9360 20.2 15.7 129 18.6 14.8 126
BURNT MTN 5880 6.7 3.8 176 13.5 8.9 152
CANYON 7870 10.4 9.8 106 11.9 12.4 96
COLE CREEK 7850 13.6 8.9 153 9.7 8.6 113
EVENING STAR 9200 27.3 18.3 149 27.4 20.9 131
FISHER CREEK 9100 29.8 24.4 122 25.8 24.0 108
NORTHEAST ENTRANCE 7350 10.1 7.5 135 10.4 9.4 111
PARKER PEAK 9400 21.3 14.7 145 18.9 13.2 143
SYLVAN LAKE 8420 17.3 14.9 116 19.6 17.0 115
THUMB DIVIDE 7980 11.6 11.1 105 11.3 13.8 82
TWO OCEAN PLATEAU 9240 27.4 20.2 136 20.0 20.4 98
WHITE MILL 8700 21.9 17.0 129 18.8 18.0 104
WOLVERINE 7650 12.7 8.2 155 11.2 9.4 119
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Basin Index (%) 132 114
WIND RIVER
BURROUGHS CREEK 8750 -M 10.0 * -M 12.0 *
CASTLE CREEK 8400 8.0 -M * 9.6 -M *
COLD SPRINGS 9630 8.5 5.3 160 10.5 7.0 150
DEER PARK 9700 8.6 10.1 85 12.5 14.3 87
HOBBS PARK 10100 10.5 9.0 117 9.4 8.9 106
KIRWIN 9550 13.6 6.4 212 11.9 8.3 143
LITTLE WARM 9370 10.5 7.6 138 12.4 9.3 133
OWL CREEK 8975 5.3 3.5 151 5.3 4.0 132
SOUTH PASS 9040 11.0 10.6 104 10.2 12.7 80
ST. LAWRENCE ALT 8620 3.5 4.8 73 6.4 6.1 105
TOGWOTEE PASS 9580 23.2 16.8 138 22.8 18.3 125
TOWNSEND CREEK 8700 4.9 6.0 82 6.0 8.2 73
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Basin Index (%) 124 111
BIGHORN BASIN
BALD MTN. 9380 17.6 13.7 128 13.3 12.2 109
BEAR TRAP MEADOW 8200 7.6 3.9 195 7.8 5.8 134
BONE SPRINGS DIV 9350 14.4 11.2 129 10.9 11.0 99
GRAVE SPRINGS 8550 8.7 5.9 147 9.1 7.4 123
KIRWIN 9550 13.6 6.4 212 11.9 8.3 143
MARQUETTE 8760 7.5 -M * 9.0 -M *
MIDDLE POWDER 7760 11.6 7.4 157 9.9 8.2 121
OWL CREEK 8975 5.3 3.5 151 5.3 4.0 132
POWDER RIVER PASS 9480 11.1 7.4 150 11.6 9.0 129
SHELL CREEK 9580 13.0 10.5 124 10.9 9.9 110
TIMBER CREEK 7950 4.7 3.1 152 6.4 4.9 131
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Basin Index (%) 147 120
SHOSHONE RIVER
BLACKWATER 9780 23.2 16.2 143 20.3 15.2 134
EVENING STAR 9200 27.3 18.3 149 27.4 20.9 131
MARQUETTE 8760 7.5 -M * 9.0 -M *
SYLVAN ROAD 7120 11.4 8.8 130 15.7 13.3 118
YOUNTS PEAK 8350 -M 11.1 * -M 12.0 *
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Basin Index (%) 143 128
POWDER RIVER
BEAR TRAP MEADOW 8200 7.6 3.9 195 7.8 5.8 134
CLOUD PEAK RESERVOIR 9860 13.9 9.9 140 12.2 9.0 136
GRAVE SPRINGS 8550 8.7 5.9 147 9.1 7.4 123
HANSEN SAWMILL 8360 6.3 4.4 143 8.4 5.7 147
MIDDLE POWDER 7760 11.6 7.4 157 9.9 8.2 121
POWDER RIVER PASS 9480 11.1 7.4 150 11.6 9.0 129
SOLDIER PARK 8720 7.9 -M * 7.6 -M *
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Basin Index (%) 152 131
TONGUE RIVER
BIG GOOSE 7990 7.2 5.9 122 9.1 7.5 121
BONE SPRINGS DIV 9350 14.4 11.2 129 10.9 11.0 99
BURGESS JUNCTION 7880 9.8 7.6 129 10.7 8.5 126
DOME LAKE 8880 9.2 8.0 115 8.6 9.4 91
LITTLE GOOSE 8870 8.0 -M * 10.7 -M *
SUCKER CREEK 8880 11.6 8.2 141 12.9 9.9 130
TIE CREEK 6870 5.4 4.1 132 10.2 7.9 129
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Basin Index (%) 128 115
BELLE FOURCHE
COLE CANYON 5910 5.2 4.7 111 11.4 6.8 168
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Basin Index (%) 111 168
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.8 5.8 134 14.4 8.9 162
NORTH RAPID CREEK 6130 7.4 5.6 132 13.1 7.2 182
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Basin Index (%) 133 171
UPPER N. PLATTE
ARAPAHO RIDGE 10960 20.4 15.3 133 20.0 16.6 120
BLACKHALL MTN 9820 27.0 -M * 26.9 -M *
COLUMBINE 9160 27.1 18.2 149 -M 19.2 *
DIVIDE PEAK 8880 14.0 14.6 96 17.4 16.0 109
JOE WRIGHT 10120 15.4 15.3 101 23.8 18.6 128
LAPRELE CREEK 8375 5.5 7.0 79 7.2 8.8 82
MED BOW 10500 15.6 -M * 28.0 -M *
NORTH FRENCH CREEK 10130 -M 19.6 * -M 19.8 *
NEVER SUMMER 10280 18.2 14.7 124 14.0 -M *
OLD BATTLE 10000 24.8 22.8 109 27.8 26.4 105
RAWAH 9020 10.8 7.7 140 13.3 10.1 132
SAGE CREEK BASIN 7850 8.6 10.2 84 9.9 11.3 88
SAND LAKE 10050 23.3 19.4 120 22.7 17.8 128
SOUTH BRUSH CREEK 8440 9.1 9.1 100 11.3 10.9 104
TOWER 10500 40.8 34.0 120 29.7 29.9 99
WEBBER SPRINGS 9250 19.0 17.4 109 20.7 19.9 104
WILLOW CREEK PASS 9540 10.6 8.9 119 10.6 9.7 109
ZIRKEL 9340 30.5 21.7 141 26.0 22.2 117
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Basin Index (%) 118 110
SWEETWATER
DEER PARK 9700 8.6 10.1 85 12.5 14.3 87
LARSEN CREEK 9000 8.8 8.8 100 10.9 -M *
SOUTH PASS 9040 11.0 10.6 104 10.2 12.7 80
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Basin Index (%) 96 84
LOWER N. PLATTE
CASPER MTN. 7900 -M 9.4 * -M 10.4 *
LAPRELE CREEK 8375 5.5 7.0 79 7.2 8.8 82
RENO HILL 8400 11.8 9.2 128 13.5 10.5 129
WINDY PEAK 7900 5.1 5.4 94 7.7 7.4 104
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Basin Index (%) 104 106
LARAMIE RIVER
BROOKLYN LAKE 10240 22.4 14.3 157 21.4 15.0 143
CINNABAR PARK 9574 17.3 16.2 107 20.5 18.9 108
CROW CREEK 8330 6.3 6.6 95 8.3 7.4 112
DEADMAN HILL 10220 17.9 11.8 152 16.9 11.9 142
RAWAH 9020 10.8 7.7 140 13.3 10.1 132
ROACH 9700 -M 11.9 * -M 13.8 *
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Basin Index (%) 132 127
S. PLATTE
BLACK MOUNTAIN 8920 8.8 -M * 10.3 -M *
CROW CREEK 8330 6.3 6.6 95 8.3 7.4 112
DEADMAN HILL 10220 17.9 11.8 152 16.9 11.9 142
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Basin Index (%) 132 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.1 8.9 102 13.3 11.4 117
DIVIDE PEAK 8880 14.0 14.6 96 17.4 16.0 109
ELK RIVER 8700 16.1 14.1 114 17.0 15.1 113
LITTLE SNAKE RIVER 8915 23.3 18.8 124 27.6 24.1 115
OLD BATTLE 10000 24.8 22.8 109 27.8 26.4 105
SAGE CREEK BASIN 7850 8.6 10.2 84 9.9 11.3 88
SANDSTONE RS 8150 9.9 10.2 97 14.3 14.2 101
WHISKEY PARK 8950 30.5 19.8 154 30.7 21.1 145
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Basin Index (%) 114 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.8 9.3 116 10.2 9.8 104
BLIND BULL SUM 8650 25.3 16.9 150 17.4 15.1 115
EAST RIM DIVIDE 7930 12.6 7.5 168 11.2 8.9 126
ELKHART PARK G.S. 9400 12.8 8.8 145 11.9 9.8 121
GROS VENTRE SUMMIT 8750 11.4 9.2 124 10.6 9.5 112
GUNSIGHT PASS 9820 14.2 9.9 143 13.0 10.2 127
KENDALL R.S. 7740 14.6 9.2 159 15.0 10.9 138
LOOMIS PARK 8240 16.7 10.9 153 17.7 13.2 134
NEW FORK LAKE 8340 11.0 7.6 145 9.3 8.2 113
POCKET CREEK 9360 9.2 -M * 9.6 -M *
SNIDER BASIN 8060 15.3 9.1 168 15.0 10.8 139
SPRING CREEK DIVIDE 9000 25.8 17.0 152 24.1 18.2 132
TRIPLE PEAK 8500 24.9 15.8 158 26.6 18.8 141
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Basin Index (%) 149 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 6.1 -M * 9.9 -M *
BUCK PASTURE 9700 10.3 -M * 11.8 -M *
EF BLACKS FORK GS 9360 6.4 -M * 7.9 -M *
HAMS FORK 7840 12.1 8.6 141 10.8 8.6 126
HEWINTA 9519 6.9 7.2 96 10.3 10.1 102
HICKERSON PARK 9145 5.6 5.3 106 6.6 7.1 93
HOLE-IN-ROCK 9150 5.2 5.0 104 6.9 6.7 103
INDIAN CREEK 9425 22.8 17.2 133 19.3 16.7 116
KELLEY R.S. 8180 14.1 11.0 128 15.7 13.7 115
SPIRIT LK 10235 6.5 -M * 9.9 -M *
STEEL CREEK PARK 10200 14.1 10.6 133 12.1 11.6 104
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Basin Index (%) 124 110
UPPER BEAR RIVER
BEAR RIVER RS 8777 6.7 -M * 9.0 -M *
BUG LAKE 7950 16.8 13.7 123 15.0 14.6 103
BURTS MILLER RANCH 8000 5.5 -M * 5.2 -M *
CHALK CREEK #1 8993 16.2 16.8 96 16.7 18.4 91
HAYDEN FORK 9212 11.3 11.3 100 15.1 15.4 98
KELLEY R.S. 8180 14.1 11.0 128 15.7 13.7 115
LILY LAKE 9156 10.1 9.4 107 11.5 12.4 93
MONTE CRISTO 8960 19.5 19.4 101 18.2 19.3 94
SALT RIVER SUMMIT 7760 13.3 9.8 136 14.6 12.6 116
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Basin Index (%) 111 100
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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.
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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.