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: FEBRUARY 28 , 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 17.6 13.4 131 18.3 17.1 107
BLACK BEAR 8170 28.6 29.2 98 27.2 30.6 89
BLIND BULL SUM 8650 28.6 17.6 162 18.7 15.9 118
COTTONWOOD CREEK 7670 25.6 16.6 154 27.4 19.4 141
EAST RIM DIVIDE 7930 13.9 8.0 174 12.4 9.5 131
GRAND TARGHEE 9260 36.0 29.7 121 27.1 24.7 110
GRANITE CREEK 6770 18.2 13.6 134 18.7 16.4 114
GRASSY LAKE 7265 28.3 25.9 109 28.5 29.3 97
GROS VENTRE SUMMIT 8750 12.1 9.6 126 11.4 10.0 114
GUNSIGHT PASS 9820 15.7 10.5 150 14.6 10.8 135
LEWIS LAKE DIVIDE 7850 26.9 25.1 107 28.8 28.6 101
PHILLIPS BENCH 8200 26.1 19.5 134 25.9 22.6 115
SALT RIVER SUMMIT 7760 14.8 10.5 141 15.9 13.4 119
SNAKE RIVER STATION 6920 15.5 14.1 110 18.5 18.5 100
SPRING CREEK DIVIDE 9000 29.4 18.3 161 27.6 19.2 144
THUMB DIVIDE 7980 12.5 12.1 103 11.9 14.5 82
TOGWOTEE PASS 9580 25.7 17.5 147 24.5 19.3 127
TWO OCEAN PLATEAU 9240 29.7 21.4 139 -M 21.5 *
WILLOW CREEK 8380 31.4 22.1 142 31.3 26.7 117
YOUNTS PEAK 8350 -M 11.6 * -M 12.6 *
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Basin Index (%) 130 112
MADISON-GALLATIN
BLACK BEAR 8170 28.6 29.2 98 27.2 30.6 89
CANYON 7870 11.0 10.4 106 12.8 13.0 98
MADISON PLATEAU 7750 16.3 17.7 92 16.8 21.1 80
WEST YELLOWSTONE 6700 9.9 8.9 111 11.0 11.6 95
WHISKEY CREEK 6800 12.0 12.0 100 13.9 16.2 86
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Basin Index (%) 99 88
YELLOWSTONE
BEARTOOTH LAKE 9360 23.1 16.4 141 21.4 15.6 137
BURNT MTN 5880 7.7 4.0 192 14.2 9.2 154
CANYON 7870 11.0 10.4 106 12.8 13.0 98
COLE CREEK 7850 14.9 9.6 155 10.9 9.0 121
EVENING STAR 9200 30.5 18.9 161 30.0 22.0 136
FISHER CREEK 9100 32.6 25.5 128 28.2 25.4 111
NORTHEAST ENTRANCE 7350 11.6 8.0 145 11.7 9.8 119
PARKER PEAK 9400 23.5 15.9 148 20.2 14.0 144
SYLVAN LAKE 8420 18.0 15.7 115 20.7 17.9 116
THUMB DIVIDE 7980 12.5 12.1 103 11.9 14.5 82
TWO OCEAN PLATEAU 9240 29.7 21.4 139 -M 21.5 *
WHITE MILL 8700 24.8 18.1 137 21.2 18.8 113
WOLVERINE 7650 14.5 8.5 171 13.1 9.9 132
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Basin Index (%) 138 121
WIND RIVER
BURROUGHS CREEK 8750 -M 10.6 * -M 12.7 *
CASTLE CREEK 8400 9.3 -M * 10.8 -M *
COLD SPRINGS 9630 9.4 5.4 174 11.4 7.4 154
DEER PARK 9700 9.4 10.8 87 13.6 15.1 90
HOBBS PARK 10100 11.1 9.5 117 10.0 9.4 106
KIRWIN 9550 15.5 6.9 225 12.9 8.7 148
LITTLE WARM 9370 11.8 7.8 151 13.9 9.8 142
OWL CREEK 8975 5.9 3.9 151 5.9 4.3 137
SOUTH PASS 9040 11.8 11.3 104 11.0 13.3 83
ST. LAWRENCE ALT 8620 3.4 5.0 68 6.7 6.4 105
TOGWOTEE PASS 9580 25.7 17.5 147 24.5 19.3 127
TOWNSEND CREEK 8700 5.3 6.3 84 6.2 8.6 72
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Basin Index (%) 130 113
BIGHORN BASIN
BALD MTN. 9380 19.5 14.5 134 15.0 13.0 115
BEAR TRAP MEADOW 8200 8.2 4.3 191 8.4 6.1 138
BONE SPRINGS DIV 9350 16.4 11.7 140 12.6 11.7 108
GRAVE SPRINGS 8550 9.1 6.7 136 9.5 7.8 122
KIRWIN 9550 15.5 6.9 225 12.9 8.7 148
MARQUETTE 8760 9.0 -M * 9.7 -M *
MIDDLE POWDER 7760 12.3 7.9 156 10.3 8.6 120
OWL CREEK 8975 5.9 3.9 151 5.9 4.3 137
POWDER RIVER PASS 9480 12.4 7.9 157 13.0 9.5 137
SHELL CREEK 9580 14.8 11.4 130 12.5 10.5 119
TIMBER CREEK 7950 5.3 3.4 156 6.9 5.2 133
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Basin Index (%) 152 125
SHOSHONE RIVER
BLACKWATER 9780 25.3 17.0 149 22.3 16.0 139
EVENING STAR 9200 30.5 18.9 161 30.0 22.0 136
MARQUETTE 8760 9.0 -M * 9.7 -M *
SYLVAN ROAD 7120 12.3 9.3 132 16.5 13.8 120
YOUNTS PEAK 8350 -M 11.6 * -M 12.6 *
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Basin Index (%) 151 133
POWDER RIVER
BEAR TRAP MEADOW 8200 8.2 4.3 191 8.4 6.1 138
CLOUD PEAK RESERVOIR 9860 15.3 10.3 149 13.4 9.5 141
GRAVE SPRINGS 8550 9.1 6.7 136 9.5 7.8 122
HANSEN SAWMILL 8360 7.1 4.6 154 9.3 6.0 155
MIDDLE POWDER 7760 12.3 7.9 156 10.3 8.6 120
POWDER RIVER PASS 9480 12.4 7.9 157 13.0 9.5 137
SOLDIER PARK 8720 8.9 -M * 8.4 -M *
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Basin Index (%) 154 135
TONGUE RIVER
BIG GOOSE 7990 8.0 6.1 131 10.1 7.7 131
BONE SPRINGS DIV 9350 16.4 11.7 140 12.6 11.7 108
BURGESS JUNCTION 7880 10.7 8.2 130 11.9 8.9 134
DOME LAKE 8880 10.6 8.5 125 9.8 9.9 99
LITTLE GOOSE 8870 9.1 -M * 11.7 -M *
SUCKER CREEK 8880 12.8 8.8 145 14.3 10.5 136
TIE CREEK 6870 6.1 4.2 145 11.0 8.2 134
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Basin Index (%) 136 122
BELLE FOURCHE
COLE CANYON 5910 5.1 5.0 102 11.7 7.0 167
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Basin Index (%) 102 167
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.0 6.4 125 14.7 9.3 158
NORTH RAPID CREEK 6130 7.7 5.8 133 13.3 7.6 175
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Basin Index (%) 129 166
UPPER N. PLATTE
ARAPAHO RIDGE 10960 22.0 16.4 134 21.4 17.5 122
BLACKHALL MTN 9820 29.3 -M * 27.0 -M *
COLUMBINE 9160 29.0 19.6 148 29.7 20.2 147
DIVIDE PEAK 8880 14.5 15.5 94 17.9 16.7 107
JOE WRIGHT 10120 16.3 16.4 99 25.5 19.8 129
LAPRELE CREEK 8375 6.2 7.7 81 7.8 9.2 85
MED BOW 10500 13.5 -M * 27.7 -M *
NORTH FRENCH CREEK 10130 -M 20.9 * -M 20.9 *
NEVER SUMMER 10280 19.4 16.0 121 15.1 -M *
OLD BATTLE 10000 26.1 23.8 110 29.9 27.7 108
RAWAH 9020 11.1 8.6 129 13.9 10.8 129
SAGE CREEK BASIN 7850 8.9 10.5 85 10.0 11.6 86
SAND LAKE 10050 25.0 21.0 119 24.2 18.7 129
SOUTH BRUSH CREEK 8440 9.5 10.1 94 11.6 11.7 99
TOWER 10500 42.4 35.8 118 34.7 31.6 110
WEBBER SPRINGS 9250 20.1 18.5 109 22.4 21.0 107
WILLOW CREEK PASS 9540 11.0 9.4 117 11.5 10.2 113
ZIRKEL 9340 34.4 22.8 151 27.7 23.3 119
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Basin Index (%) 117 115
SWEETWATER
DEER PARK 9700 9.4 10.8 87 13.6 15.1 90
LARSEN CREEK 9000 10.1 9.4 107 12.0 -M *
SOUTH PASS 9040 11.8 11.3 104 11.0 13.3 83
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Basin Index (%) 99 87
LOWER N. PLATTE
CASPER MTN. 7900 -M 10.0 * -M 11.0 *
LAPRELE CREEK 8375 6.2 7.7 81 7.8 9.2 85
RENO HILL 8400 12.2 9.8 124 14.4 11.0 131
WINDY PEAK 7900 5.8 5.7 102 8.3 7.7 108
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Basin Index (%) 104 109
LARAMIE RIVER
BROOKLYN LAKE 10240 25.0 14.8 169 23.9 15.9 150
CINNABAR PARK 9574 18.6 16.9 110 20.6 19.6 105
CROW CREEK 8330 6.5 6.7 97 9.5 7.7 123
DEADMAN HILL 10220 19.8 12.4 160 19.0 12.6 151
RAWAH 9020 11.1 8.6 129 13.9 10.8 129
ROACH 9700 -M 12.3 * -M 14.6 *
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Basin Index (%) 136 130
S. PLATTE
BLACK MOUNTAIN 8920 9.6 -M * 11.1 -M *
CROW CREEK 8330 6.5 6.7 97 9.5 7.7 123
DEADMAN HILL 10220 19.8 12.4 160 19.0 12.6 151
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Basin Index (%) 138 140
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.1 9.8 93 13.8 12.1 114
DIVIDE PEAK 8880 14.5 15.5 94 17.9 16.7 107
ELK RIVER 8700 17.4 15.2 114 18.2 15.8 115
LITTLE SNAKE RIVER 8915 24.7 19.6 126 28.8 24.9 116
OLD BATTLE 10000 26.1 23.8 110 29.9 27.7 108
SAGE CREEK BASIN 7850 8.9 10.5 85 10.0 11.6 86
SANDSTONE RS 8150 10.0 10.3 97 14.6 15.0 97
WHISKEY PARK 8950 32.5 21.2 153 31.0 22.2 140
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Basin Index (%) 114 112
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.0 9.9 121 11.2 10.4 108
BLIND BULL SUM 8650 28.6 17.6 162 18.7 15.9 118
EAST RIM DIVIDE 7930 13.9 8.0 174 12.4 9.5 131
ELKHART PARK G.S. 9400 14.3 9.3 154 13.2 10.4 127
GROS VENTRE SUMMIT 8750 12.1 9.6 126 11.4 10.0 114
GUNSIGHT PASS 9820 15.7 10.5 150 14.6 10.8 135
KENDALL R.S. 7740 17.0 9.7 175 17.2 11.6 148
LOOMIS PARK 8240 18.8 11.6 162 19.3 14.0 138
NEW FORK LAKE 8340 12.7 8.1 157 10.7 8.7 123
POCKET CREEK 9360 10.1 -M * 10.2 -M *
SNIDER BASIN 8060 17.3 9.5 182 16.9 11.5 147
SPRING CREEK DIVIDE 9000 29.4 18.3 161 27.6 19.2 144
TRIPLE PEAK 8500 28.6 16.6 172 30.1 20.1 150
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Basin Index (%) 159 134
LOWER GREEN RIVER
BLACKS FORK JCT 8870 6.8 -M * 10.7 -M *
BUCK PASTURE 9700 11.1 -M * 12.6 -M *
EF BLACKS FORK GS 9360 7.2 -M * 8.2 -M *
HAMS FORK 7840 13.4 9.1 147 11.7 9.1 129
HEWINTA 9519 8.2 7.8 105 11.2 10.7 105
HICKERSON PARK 9145 5.9 5.8 102 7.4 7.5 99
HOLE-IN-ROCK 9150 5.6 5.5 102 7.3 7.0 104
INDIAN CREEK 9425 25.8 18.7 138 21.6 17.7 122
KELLEY R.S. 8180 15.4 12.0 128 17.1 14.5 118
SPIRIT LK 10235 6.8 -M * 10.2 -M *
STEEL CREEK PARK 10200 14.9 11.4 131 12.8 12.3 104
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Basin Index (%) 127 113
UPPER BEAR RIVER
BEAR RIVER RS 8777 7.4 -M * 9.7 -M *
BUG LAKE 7950 17.9 14.6 123 15.8 15.4 103
BURTS MILLER RANCH 8000 5.5 -M * 5.6 -M *
CHALK CREEK #1 8993 17.3 18.1 96 17.5 19.3 91
HAYDEN FORK 9212 12.1 11.9 102 16.2 16.3 99
KELLEY R.S. 8180 15.4 12.0 128 17.1 14.5 118
LILY LAKE 9156 10.9 10.1 108 12.2 13.1 93
MONTE CRISTO 8960 20.7 20.6 100 19.1 20.4 94
SALT RIVER SUMMIT 7760 14.8 10.5 141 15.9 13.4 119
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Basin Index (%) 112 101
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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.