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 SATURDAY: MAY 17 , 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 8.6 .0 * 30.3 24.2 125
BLACK BEAR 8170 45.9 35.3 130 48.4 44.3 109
BLIND BULL SUM 8650 37.1 21.5 173 26.0 23.0 113
COTTONWOOD CREEK 7670 21.8 8.9 245 39.6 29.6 134
EAST RIM DIVIDE 7930 .1 2.6 4 17.8 14.0 127
GRAND TARGHEE 9260 51.9 44.0 118 44.8 36.7 122
GRANITE CREEK 6770 11.9 .0 * 27.6 22.7 122
GRASSY LAKE 7265 30.9 20.4 151 46.5 41.5 112
GROS VENTRE SUMMIT 8750 11.7 7.6 154 17.0 15.9 107
GUNSIGHT PASS 9820 19.0 11.7 162 22.2 17.5 127
LEWIS LAKE DIVIDE 7850 38.9 24.5 159 46.9 40.6 116
PHILLIPS BENCH 8200 32.5 21.0 155 39.6 32.6 121
SALT RIVER SUMMIT 7760 5.3 .6 883* 22.3 19.7 113
SNAKE RIVER STATION 6920 3.6 .0 * 30.4 26.2 116
SPRING CREEK DIVIDE 9000 36.1 22.0 164 36.4 27.8 131
THUMB DIVIDE 7980 12.3 3.6 342 23.6 22.5 105
TOGWOTEE PASS 9580 33.2 23.8 139 37.5 29.4 128
TWO OCEAN PLATEAU 9240 41.2 29.0 142 39.8 32.4 123
WILLOW CREEK 8380 32.0 18.8 170 47.3 40.4 117
YOUNTS PEAK 8350 -M 12.9 * -M 19.2 *
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Basin Index (%) 161 119
MADISON-GALLATIN
BLACK BEAR 8170 45.9 35.3 130 48.4 44.3 109
CANYON 7870 9.9 4.2 236 20.2 19.6 103
MADISON PLATEAU 7750 24.0 15.9 151 30.7 31.1 99
WEST YELLOWSTONE 6700 .1 .0 * 19.5 17.4 112
WHISKEY CREEK 6800 13.0 7.6 171 26.0 24.0 108
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Basin Index (%) 147 106
YELLOWSTONE
BEARTOOTH LAKE 9360 33.7 22.3 151 34.8 23.9 146
BURNT MTN 5880 .2 .0 * 25.9 18.9 137
CANYON 7870 9.9 4.2 236 20.2 19.6 103
COLE CREEK 7850 26.0 16.8 155 22.7 19.2 118
EVENING STAR 9200 38.8 24.9 156 46.6 32.9 142
FISHER CREEK 9100 47.4 33.6 141 46.9 37.9 124
NORTHEAST ENTRANCE 7350 2.0 .0 * 19.4 15.3 127
PARKER PEAK 9400 38.0 20.9 182 35.4 22.1 160
SYLVAN LAKE 8420 22.6 16.3 139 35.3 27.2 130
THUMB DIVIDE 7980 12.3 3.6 342 23.6 22.5 105
TWO OCEAN PLATEAU 9240 41.2 29.0 142 39.8 32.4 123
WHITE MILL 8700 36.0 23.7 152 35.0 28.6 122
WOLVERINE 7650 2.1 .0 * 21.2 15.3 139
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Basin Index (%) 159 129
WIND RIVER
BURROUGHS CREEK 8750 -M 10.8 * -M 19.6 *
CASTLE CREEK 8400 .0 -M * 14.8 -M *
COLD SPRINGS 9630 .8 .0 * 15.4 14.2 108
DEER PARK 9700 -M 12.4 * 24.1 25.7 94
HOBBS PARK 10100 15.9 14.4 110 18.3 19.0 96
KIRWIN 9550 19.0 9.7 196 22.1 15.6 142
LITTLE WARM 9370 10.1 4.9 206 20.2 17.1 118
OWL CREEK 8975 .2 .0 * 9.4 9.4 100
SOUTH PASS 9040 12.8 9.2 139 19.2 22.2 86
ST. LAWRENCE ALT 8620 .2 .0 * 12.8 13.2 97
TOGWOTEE PASS 9580 33.2 23.8 139 37.5 29.4 128
TOWNSEND CREEK 8700 1.9 .3 633* 14.1 16.8 84
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Basin Index (%) 151* 106
BIGHORN BASIN
BALD MTN. 9380 31.7 20.3 156 25.4 21.8 117
BEAR TRAP MEADOW 8200 .7 .0 * 14.0 12.4 113
BONE SPRINGS DIV 9350 26.5 15.3 173 22.2 20.5 108
GRAVE SPRINGS 8550 10.0 5.2 192 15.3 14.8 103
KIRWIN 9550 19.0 9.7 196 22.1 15.6 142
MARQUETTE 8760 15.0 -M * 17.8 -M *
MIDDLE POWDER 7760 14.9 7.7 194 17.5 16.0 109
OWL CREEK 8975 .2 .0 * 9.4 9.4 100
POWDER RIVER PASS 9480 13.2 7.4 178 20.2 17.0 119
SHELL CREEK 9580 21.9 16.1 136 21.3 18.3 116
TIMBER CREEK 7950 .3 .0 * 13.4 11.9 113
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Basin Index (%) 169 115
SHOSHONE RIVER
BLACKWATER 9780 35.9 24.9 144 34.7 25.6 136
EVENING STAR 9200 38.8 24.9 156 46.6 32.9 142
MARQUETTE 8760 15.0 -M * 17.8 -M *
SYLVAN ROAD 7120 .0 .0 * 25.7 20.0 128
YOUNTS PEAK 8350 -M 12.9 * -M 19.2 *
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Basin Index (%) 150* 136
POWDER RIVER
BEAR TRAP MEADOW 8200 .7 .0 * 14.0 12.4 113
CLOUD PEAK RESERVOIR 9860 25.2 15.8 159 26.0 19.3 135
GRAVE SPRINGS 8550 10.0 5.2 192 15.3 14.8 103
HANSEN SAWMILL 8360 4.2 .0 * 16.1 12.6 128
MIDDLE POWDER 7760 14.9 7.7 194 17.5 16.0 109
POWDER RIVER PASS 9480 13.2 7.4 178 20.2 17.0 119
SOLDIER PARK 8720 9.5 -M * 16.5 -M *
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Basin Index (%) 189 118
TONGUE RIVER
BIG GOOSE 7990 11.8 7.5 157 20.0 16.8 119
BONE SPRINGS DIV 9350 26.5 15.3 173 22.2 20.5 108
BURGESS JUNCTION 7880 17.0 9.8 173 21.2 16.7 127
DOME LAKE 8880 17.3 8.5 204 20.9 18.8 111
LITTLE GOOSE 8870 14.7 -M * 23.2 -M *
SUCKER CREEK 8880 18.5 10.3 180 25.5 19.9 128
TIE CREEK 6870 4.0 .0 * 19.9 16.9 118
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Basin Index (%) 185 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.4 14.6 119
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Basin Index (%) * 119
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.8 16.4 127
NORTH RAPID CREEK 6130 .0 .0 * 20.0 14.3 140
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Basin Index (%) * 133
UPPER N. PLATTE
ARAPAHO RIDGE 10960 31.2 20.5 152 34.6 28.4 122
BLACKHALL MTN 9820 39.7 -M * -M -M *
COLUMBINE 9160 26.4 6.4 412 -M 30.4 *
DIVIDE PEAK 8880 12.0 8.6 140 29.7 26.2 113
JOE WRIGHT 10120 32.1 22.3 144 41.0 32.5 126
LAPRELE CREEK 8375 2.2 .0 * 16.8 16.6 101
MED BOW 10500 -M -M * 48.4 -M *
NORTH FRENCH CREEK 10130 40.2 31.3 128 42.2 33.4 126
NEVER SUMMER 10280 29.6 21.7 136 25.8 -M *
OLD BATTLE 10000 40.2 33.9 119 43.5 41.8 104
RAWAH 9020 7.4 .9 822* 23.1 18.8 123
SAGE CREEK BASIN 7850 1.1 .0 * 14.6 17.2 85
SAND LAKE 10050 40.4 29.3 138 41.7 31.5 132
SOUTH BRUSH CREEK 8440 .4 .5 80* 19.6 19.8 99
TOWER 10500 56.1 49.0 114 60.1 47.5 127
WEBBER SPRINGS 9250 20.5 14.8 139 35.9 31.8 113
WILLOW CREEK PASS 9540 15.7 10.6 148 19.2 17.1 112
ZIRKEL 9340 34.2 14.3 239 -M 33.3 *
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Basin Index (%) 148 116
SWEETWATER
DEER PARK 9700 -M 12.4 * 24.1 25.7 94
LARSEN CREEK 9000 .8 4.5 18 17.9 -M *
SOUTH PASS 9040 12.8 9.2 139 19.2 22.2 86
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Basin Index (%) 99 90
LOWER N. PLATTE
CASPER MTN. 7900 14.9 7.4 201 21.0 20.1 104
LAPRELE CREEK 8375 2.2 .0 * 16.8 16.6 101
RENO HILL 8400 19.0 6.4 297 28.0 21.0 133
WINDY PEAK 7900 2.0 .0 * 16.9 14.4 117
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Basin Index (%) 276 115
LARAMIE RIVER
BROOKLYN LAKE 10240 30.5 18.7 163 37.8 26.9 141
CINNABAR PARK 9574 21.8 14.4 151 36.7 29.4 125
CROW CREEK 8330 .3 .0 * 17.7 15.0 118
DEADMAN HILL 10220 28.6 17.9 160 30.4 22.7 134
RAWAH 9020 7.4 .9 822* 23.1 18.8 123
ROACH 9700 19.6 13.1 150 30.9 24.3 127
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Basin Index (%) 166 129
S. PLATTE
BLACK MOUNTAIN 8920 6.4 -M * 19.0 -M *
CROW CREEK 8330 .3 .0 * 17.7 15.0 118
DEADMAN HILL 10220 28.6 17.9 160 30.4 22.7 134
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Basin Index (%) 161* 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.5 109
DIVIDE PEAK 8880 12.0 8.6 140 29.7 26.2 113
ELK RIVER 8700 9.3 1.2 775* 26.9 24.4 110
LITTLE SNAKE RIVER 8915 -M 16.5 * -M 35.0 *
OLD BATTLE 10000 40.2 33.9 119 43.5 41.8 104
SAGE CREEK BASIN 7850 1.1 .0 * 14.6 17.2 85
SANDSTONE RS 8150 -M .0 * 20.6 22.3 92
WHISKEY PARK 8950 32.4 23.8 136 45.8 33.7 136
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Basin Index (%) 141* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.1 6.1 182 17.3 16.6 104
BLIND BULL SUM 8650 37.1 21.5 173 26.0 23.0 113
EAST RIM DIVIDE 7930 .1 2.6 4 17.8 14.0 127
ELKHART PARK G.S. 9400 16.2 7.5 216 20.3 16.5 123
GROS VENTRE SUMMIT 8750 11.7 7.6 154 17.0 15.9 107
GUNSIGHT PASS 9820 19.0 11.7 162 22.2 17.5 127
KENDALL R.S. 7740 8.9 .0 * 24.9 16.6 150
LOOMIS PARK 8240 14.3 4.8 298 27.5 20.4 135
NEW FORK LAKE 8340 5.1 .4 1275* 14.9 13.4 111
POCKET CREEK 9360 11.6 -M * 15.2 -M *
SNIDER BASIN 8060 .0 2.9 0 21.7 16.6 131
SPRING CREEK DIVIDE 9000 36.1 22.0 164 36.4 27.8 131
TRIPLE PEAK 8500 25.6 11.1 231 41.2 30.0 137
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Basin Index (%) 189 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.8 -M *
BUCK PASTURE 9700 6.8 -M * 21.2 -M *
EF BLACKS FORK GS 9360 .0 -M * 13.8 -M *
HAMS FORK 7840 .0 .0 * 16.8 14.2 118
HEWINTA 9519 .0 .0 * 18.4 17.6 105
HICKERSON PARK 9145 .1 .0 * 12.1 13.3 91
HOLE-IN-ROCK 9150 .0 .0 * 13.4 12.8 105
INDIAN CREEK 9425 28.8 20.5 140 30.8 26.8 115
KELLEY R.S. 8180 9.9 5.1 194 23.6 21.6 109
SPIRIT LK 10235 5.0 -M * 18.8 -M *
STEEL CREEK PARK 10200 20.7 15.8 131 21.1 20.8 101
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Basin Index (%) 144* 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 13.0 8.4 155 24.5 23.2 106
BURTS MILLER RANCH 8000 .1 -M * 8.8 -M *
CHALK CREEK #1 8993 15.8 18.0 88 27.5 30.6 90
HAYDEN FORK 9212 .7 1.1 64* 25.2 25.6 98
KELLEY R.S. 8180 9.9 5.1 194 23.6 21.6 109
LILY LAKE 9156 3.9 .0 * 18.7 21.2 88
MONTE CRISTO 8960 18.6 17.5 106 30.0 31.4 96
SALT RIVER SUMMIT 7760 5.3 .6 883* 22.3 19.7 113
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Basin Index (%) 133* 99
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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.