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 MONDAY: MAY 12 , 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 13.5 3.3 409 30.2 23.8 127
BLACK BEAR 8170 45.9 36.8 125 48.2 43.4 111
BLIND BULL SUM 8650 37.2 22.4 166 25.8 22.5 115
COTTONWOOD CREEK 7670 23.9 12.1 198 38.7 29.1 133
EAST RIM DIVIDE 7930 4.2 5.4 78 17.3 13.7 126
GRAND TARGHEE 9260 53.6 46.1 116 44.6 36.3 123
GRANITE CREEK 6770 14.6 4.0 365 27.4 22.3 123
GRASSY LAKE 7265 34.4 24.6 140 46.5 40.8 114
GROS VENTRE SUMMIT 8750 13.2 9.4 140 16.9 15.5 109
GUNSIGHT PASS 9820 19.8 12.3 161 21.9 17.2 127
LEWIS LAKE DIVIDE 7850 41.4 28.5 145 46.6 40.0 116
PHILLIPS BENCH 8200 35.4 22.8 155 39.4 32.2 122
SALT RIVER SUMMIT 7760 8.3 3.2 259 22.0 19.3 114
SNAKE RIVER STATION 6920 8.7 1.1 791* 30.4 25.7 118
SPRING CREEK DIVIDE 9000 36.2 23.3 155 35.9 27.4 131
THUMB DIVIDE 7980 15.9 7.4 215 23.3 22.0 106
TOGWOTEE PASS 9580 34.9 25.3 138 37.4 28.8 130
TWO OCEAN PLATEAU 9240 40.5 29.5 137 39.6 31.8 125
WILLOW CREEK 8380 34.3 20.6 167 46.7 39.6 118
YOUNTS PEAK 8350 -M 14.9 * -M 18.8 *
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Basin Index (%) 153 120
MADISON-GALLATIN
BLACK BEAR 8170 45.9 36.8 125 48.2 43.4 111
CANYON 7870 12.9 6.7 193 20.2 19.1 106
MADISON PLATEAU 7750 26.3 19.0 138 30.7 30.2 102
WEST YELLOWSTONE 6700 .0 .0 * 19.6 16.8 117
WHISKEY CREEK 6800 15.4 9.9 156 26.1 23.3 112
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Basin Index (%) 139 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.6 22.9 151 34.6 23.3 148
BURNT MTN 5880 .8 .0 * 25.3 18.4 138
CANYON 7870 12.9 6.7 193 20.2 19.1 106
COLE CREEK 7850 26.6 17.2 155 22.5 18.6 121
EVENING STAR 9200 41.6 25.6 162 46.3 32.1 144
FISHER CREEK 9100 48.8 34.4 142 46.7 36.9 127
NORTHEAST ENTRANCE 7350 6.2 .6 1033* 19.3 14.8 130
PARKER PEAK 9400 38.2 22.1 173 35.1 21.5 163
SYLVAN LAKE 8420 24.0 17.8 135 35.2 26.6 132
THUMB DIVIDE 7980 15.9 7.4 215 23.3 22.0 106
TWO OCEAN PLATEAU 9240 40.5 29.5 137 39.6 31.8 125
WHITE MILL 8700 36.9 24.9 148 34.8 27.8 125
WOLVERINE 7650 7.8 .0 * 21.0 14.9 141
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Basin Index (%) 160 131
WIND RIVER
BURROUGHS CREEK 8750 -M 11.5 * -M 19.2 *
CASTLE CREEK 8400 .0 -M * 14.5 -M *
COLD SPRINGS 9630 2.4 1.0 240 15.3 13.8 111
DEER PARK 9700 17.1 14.3 120 23.3 25.3 92
HOBBS PARK 10100 15.6 15.8 99 17.7 18.3 97
KIRWIN 9550 20.0 10.8 185 21.5 15.1 142
LITTLE WARM 9370 11.2 6.6 170 19.8 16.6 119
OWL CREEK 8975 .0 .4 0* 9.2 9.0 102
SOUTH PASS 9040 13.0 11.2 116 18.2 21.8 83
ST. LAWRENCE ALT 8620 1.0 .6 167* 12.2 12.8 95
TOGWOTEE PASS 9580 34.9 25.3 138 37.4 28.8 130
TOWNSEND CREEK 8700 2.3 2.8 82 13.2 16.3 81
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Basin Index (%) 132 106
BIGHORN BASIN
BALD MTN. 9380 31.5 20.8 151 25.0 21.4 117
BEAR TRAP MEADOW 8200 2.4 .0 * 13.4 11.9 113
BONE SPRINGS DIV 9350 25.7 16.5 156 21.6 20.0 108
GRAVE SPRINGS 8550 10.2 7.3 140 14.8 14.5 102
KIRWIN 9550 20.0 10.8 185 21.5 15.1 142
MARQUETTE 8760 15.7 -M * 17.6 -M *
MIDDLE POWDER 7760 15.7 10.2 154 17.1 15.6 110
OWL CREEK 8975 .0 .4 0* 9.2 9.0 102
POWDER RIVER PASS 9480 13.0 8.9 146 19.6 16.5 119
SHELL CREEK 9580 21.4 16.8 127 20.9 17.8 117
TIMBER CREEK 7950 1.7 1.1 155 13.3 11.4 117
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Basin Index (%) 153 115
SHOSHONE RIVER
BLACKWATER 9780 36.3 24.5 148 34.5 24.9 139
EVENING STAR 9200 41.6 25.6 162 46.3 32.1 144
MARQUETTE 8760 15.7 -M * 17.6 -M *
SYLVAN ROAD 7120 .0 .7 0* 25.7 19.5 132
YOUNTS PEAK 8350 -M 14.9 * -M 18.8 *
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Basin Index (%) 153* 139
POWDER RIVER
BEAR TRAP MEADOW 8200 2.4 .0 * 13.4 11.9 113
CLOUD PEAK RESERVOIR 9860 24.3 16.7 146 24.7 18.6 133
GRAVE SPRINGS 8550 10.2 7.3 140 14.8 14.5 102
HANSEN SAWMILL 8360 4.7 .6 783* 15.8 12.2 130
MIDDLE POWDER 7760 15.7 10.2 154 17.1 15.6 110
POWDER RIVER PASS 9480 13.0 8.9 146 19.6 16.5 119
SOLDIER PARK 8720 9.4 -M * 15.9 -M *
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Basin Index (%) 161 118
TONGUE RIVER
BIG GOOSE 7990 11.6 10.0 116 19.3 16.3 118
BONE SPRINGS DIV 9350 25.7 16.5 156 21.6 20.0 108
BURGESS JUNCTION 7880 17.6 11.3 156 20.6 16.3 126
DOME LAKE 8880 16.9 10.9 155 20.3 18.3 111
LITTLE GOOSE 8870 14.2 -M * 22.4 -M *
SUCKER CREEK 8880 18.2 12.5 146 24.7 19.3 128
TIE CREEK 6870 5.0 .9 556 19.3 16.4 118
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Basin Index (%) 153 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.2 14.0 123
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Basin Index (%) * 123
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.5 15.9 129
NORTH RAPID CREEK 6130 .0 .0 * 19.5 14.0 139
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Basin Index (%) * 134
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.4 22.3 136 33.9 27.9 122
BLACKHALL MTN 9820 39.2 -M * -M -M *
COLUMBINE 9160 27.1 11.2 242 -M 29.8 *
DIVIDE PEAK 8880 -M 13.0 * 28.8 25.7 112
JOE WRIGHT 10120 30.3 23.2 131 39.9 31.7 126
LAPRELE CREEK 8375 2.1 1.1 191 16.0 16.3 98
MED BOW 10500 -M -M * 47.8 -M *
NORTH FRENCH CREEK 10130 40.2 32.5 124 41.9 32.7 128
NEVER SUMMER 10280 28.7 22.2 129 25.0 -M *
OLD BATTLE 10000 -M 36.8 * 42.4 41.1 103
RAWAH 9020 7.8 2.1 371 22.2 18.6 119
SAGE CREEK BASIN 7850 2.8 .0 * 14.5 17.0 85
SAND LAKE 10050 39.5 31.6 125 40.6 30.9 131
SOUTH BRUSH CREEK 8440 2.3 3.6 64 19.3 19.3 100
TOWER 10500 55.5 50.9 109 59.2 46.8 126
WEBBER SPRINGS 9250 20.3 18.4 110 35.0 31.3 112
WILLOW CREEK PASS 9540 15.6 12.6 124 18.7 16.6 113
ZIRKEL 9340 -M 18.9 * -M 33.0 *
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Basin Index (%) 131 116
SWEETWATER
DEER PARK 9700 17.1 14.3 120 23.3 25.3 92
LARSEN CREEK 9000 3.7 5.9 63 17.8 -M *
SOUTH PASS 9040 13.0 11.2 116 18.2 21.8 83
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Basin Index (%) 108 88
LOWER N. PLATTE
CASPER MTN. 7900 14.6 10.8 135 20.1 19.7 102
LAPRELE CREEK 8375 2.1 1.1 191 16.0 16.3 98
RENO HILL 8400 18.5 9.4 197 26.4 20.6 128
WINDY PEAK 7900 2.5 .0 * 16.5 14.0 118
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Basin Index (%) 177 112
LARAMIE RIVER
BROOKLYN LAKE 10240 31.0 20.8 149 36.9 26.2 141
CINNABAR PARK 9574 24.3 16.7 146 36.0 28.8 125
CROW CREEK 8330 1.3 .0 * 16.9 14.6 116
DEADMAN HILL 10220 28.7 18.5 155 29.7 22.0 135
RAWAH 9020 7.8 2.1 371 22.2 18.6 119
ROACH 9700 19.4 15.0 129 29.9 23.6 127
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Basin Index (%) 154 128
S. PLATTE
BLACK MOUNTAIN 8920 7.3 -M * -M -M *
CROW CREEK 8330 1.3 .0 * 16.9 14.6 116
DEADMAN HILL 10220 28.7 18.5 155 29.7 22.0 135
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Basin Index (%) 162* 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.9 18.1 110
DIVIDE PEAK 8880 -M 13.0 * 28.8 25.7 112
ELK RIVER 8700 10.3 6.2 166 26.5 24.0 110
LITTLE SNAKE RIVER 8915 -M 19.8 * -M 34.6 *
OLD BATTLE 10000 -M 36.8 * 42.4 41.1 103
SAGE CREEK BASIN 7850 2.8 .0 * 14.5 17.0 85
SANDSTONE RS 8150 .0 .8 0* 20.1 22.0 91
WHISKEY PARK 8950 38.8 26.0 149 45.5 33.2 137
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Basin Index (%) 157* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.5 8.5 147 17.1 16.3 105
BLIND BULL SUM 8650 37.2 22.4 166 25.8 22.5 115
EAST RIM DIVIDE 7930 4.2 5.4 78 17.3 13.7 126
ELKHART PARK G.S. 9400 17.1 9.4 182 19.8 16.2 122
GROS VENTRE SUMMIT 8750 13.2 9.4 140 16.9 15.5 109
GUNSIGHT PASS 9820 19.8 12.3 161 21.9 17.2 127
KENDALL R.S. 7740 12.1 .0 * 24.8 16.3 152
LOOMIS PARK 8240 17.1 6.7 255 27.3 20.0 136
NEW FORK LAKE 8340 8.2 2.1 390 14.6 13.0 112
POCKET CREEK 9360 12.5 -M * 14.9 -M *
SNIDER BASIN 8060 3.9 6.9 57 21.1 16.4 129
SPRING CREEK DIVIDE 9000 36.2 23.3 155 35.9 27.4 131
TRIPLE PEAK 8500 27.8 14.2 196 40.6 29.4 138
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Basin Index (%) 174 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .7 -M * 16.8 -M *
BUCK PASTURE 9700 9.2 -M * 21.3 -M *
EF BLACKS FORK GS 9360 2.1 -M * 13.2 -M *
HAMS FORK 7840 1.8 .0 * 16.5 14.0 118
HEWINTA 9519 -M 1.1 * 18.3 17.3 106
HICKERSON PARK 9145 2.9 .0 * 11.9 13.0 92
HOLE-IN-ROCK 9150 1.5 .0 * 13.2 12.5 106
INDIAN CREEK 9425 30.5 21.2 144 30.3 26.4 115
KELLEY R.S. 8180 12.2 7.8 156 23.2 21.3 109
SPIRIT LK 10235 6.0 -M * 18.5 -M *
STEEL CREEK PARK 10200 21.6 17.4 124 20.8 20.4 102
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Basin Index (%) 152* 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 .3 -M * 15.4 -M *
BUG LAKE 7950 16.1 11.7 138 24.3 22.9 106
BURTS MILLER RANCH 8000 .6 -M * 8.6 -M *
CHALK CREEK #1 8993 17.8 20.7 86 27.7 30.1 92
HAYDEN FORK 9212 4.2 5.0 84 25.2 25.2 100
KELLEY R.S. 8180 12.2 7.8 156 23.2 21.3 109
LILY LAKE 9156 6.6 3.6 183 18.7 20.8 90
MONTE CRISTO 8960 21.0 20.6 102 29.8 30.9 96
SALT RIVER SUMMIT 7760 8.3 3.2 259 22.0 19.3 114
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Basin Index (%) 119 100
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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.