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 SUNDAY: MAY 18 , 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 7.3 .0 * 30.3 24.3 125
BLACK BEAR 8170 45.9 34.8 132 48.4 44.4 109
BLIND BULL SUM 8650 38.2 21.0 182 26.1 23.1 113
COTTONWOOD CREEK 7670 20.8 8.2 254 39.6 29.8 133
EAST RIM DIVIDE 7930 .0 1.8 0 17.8 14.0 127
GRAND TARGHEE 9260 51.3 43.4 118 44.8 36.7 122
GRANITE CREEK 6770 10.8 .0 * 27.6 22.8 121
GRASSY LAKE 7265 29.2 19.5 150 46.5 41.7 112
GROS VENTRE SUMMIT 8750 10.8 7.0 154 16.9 16.0 106
GUNSIGHT PASS 9820 18.5 11.4 162 22.1 17.6 126
LEWIS LAKE DIVIDE 7850 37.4 23.8 157 46.9 40.8 115
PHILLIPS BENCH 8200 31.2 20.5 152 39.6 32.7 121
SALT RIVER SUMMIT 7760 3.9 .0 * 22.3 19.8 113
SNAKE RIVER STATION 6920 1.8 .0 * 30.4 26.3 116
SPRING CREEK DIVIDE 9000 35.1 21.5 163 36.5 27.9 131
THUMB DIVIDE 7980 11.2 2.8 400 23.6 22.6 104
TOGWOTEE PASS 9580 32.2 23.5 137 37.5 29.5 127
TWO OCEAN PLATEAU 9240 41.1 28.7 143 39.9 32.6 122
WILLOW CREEK 8380 30.6 18.2 168 47.3 40.6 117
YOUNTS PEAK 8350 -M 12.5 * -M 19.3 *
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Basin Index (%) 160 119
MADISON-GALLATIN
BLACK BEAR 8170 45.9 34.8 132 48.4 44.4 109
CANYON 7870 9.1 3.5 260 20.3 19.7 103
MADISON PLATEAU 7750 22.7 15.3 148 30.8 31.2 99
WEST YELLOWSTONE 6700 .0 .0 * 19.6 17.4 113
WHISKEY CREEK 6800 12.0 6.9 174 26.1 24.1 108
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Basin Index (%) 148 106
YELLOWSTONE
BEARTOOTH LAKE 9360 33.2 22.1 150 34.8 24.0 145
BURNT MTN 5880 .2 .0 * 26.0 18.9 138
CANYON 7870 9.1 3.5 260 20.3 19.7 103
COLE CREEK 7850 25.7 16.7 154 22.7 19.3 118
EVENING STAR 9200 36.8 24.5 150 46.5 33.1 140
FISHER CREEK 9100 46.9 33.3 141 46.9 38.1 123
NORTHEAST ENTRANCE 7350 .9 .0 * 19.4 15.3 127
PARKER PEAK 9400 37.4 20.6 182 35.5 22.2 160
SYLVAN LAKE 8420 21.3 15.9 134 35.4 27.3 130
THUMB DIVIDE 7980 11.2 2.8 400 23.6 22.6 104
TWO OCEAN PLATEAU 9240 41.1 28.7 143 39.9 32.6 122
WHITE MILL 8700 35.7 23.2 154 35.0 28.7 122
WOLVERINE 7650 1.5 .0 * 21.2 15.4 138
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Basin Index (%) 157 128
WIND RIVER
BURROUGHS CREEK 8750 -M 10.3 * -M 19.7 *
CASTLE CREEK 8400 .0 -M * 14.8 -M *
COLD SPRINGS 9630 .2 .0 * 15.3 14.3 107
DEER PARK 9700 -M 11.8 * 24.2 25.9 93
HOBBS PARK 10100 15.4 14.0 110 18.2 19.1 95
KIRWIN 9550 18.2 9.3 196 22.1 15.7 141
LITTLE WARM 9370 9.1 4.2 217 20.1 17.2 117
OWL CREEK 8975 .1 .0 * 9.5 9.5 100
SOUTH PASS 9040 11.9 8.5 140 19.2 22.3 86
ST. LAWRENCE ALT 8620 .1 .0 * 12.4 13.4 93
TOGWOTEE PASS 9580 32.2 23.5 137 37.5 29.5 127
TOWNSEND CREEK 8700 1.0 .2 500* 14.4 17.0 85
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Basin Index (%) 148* 105
BIGHORN BASIN
BALD MTN. 9380 31.6 20.0 158 25.4 21.9 116
BEAR TRAP MEADOW 8200 .1 .0 * 14.1 12.5 113
BONE SPRINGS DIV 9350 25.3 15.0 169 22.3 20.7 108
GRAVE SPRINGS 8550 9.2 4.4 209 15.4 14.9 103
KIRWIN 9550 18.2 9.3 196 22.1 15.7 141
MARQUETTE 8760 14.5 -M * 17.9 -M *
MIDDLE POWDER 7760 13.9 7.0 199 17.5 16.2 108
OWL CREEK 8975 .1 .0 * 9.5 9.5 100
POWDER RIVER PASS 9480 13.1 6.8 193 20.2 17.0 119
SHELL CREEK 9580 21.6 15.8 137 21.3 18.4 116
TIMBER CREEK 7950 .2 .0 * 13.5 12.0 112
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Basin Index (%) 170 114
SHOSHONE RIVER
BLACKWATER 9780 35.4 24.8 143 34.8 25.7 135
EVENING STAR 9200 36.8 24.5 150 46.5 33.1 140
MARQUETTE 8760 14.5 -M * 17.9 -M *
SYLVAN ROAD 7120 .0 .0 * 25.7 20.1 128
YOUNTS PEAK 8350 -M 12.5 * -M 19.3 *
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Basin Index (%) 146* 136
POWDER RIVER
BEAR TRAP MEADOW 8200 .1 .0 * 14.1 12.5 113
CLOUD PEAK RESERVOIR 9860 25.1 15.5 162 26.0 19.4 134
GRAVE SPRINGS 8550 9.2 4.4 209 15.4 14.9 103
HANSEN SAWMILL 8360 3.7 .0 * 16.2 12.7 128
MIDDLE POWDER 7760 13.9 7.0 199 17.5 16.2 108
POWDER RIVER PASS 9480 13.1 6.8 193 20.2 17.0 119
SOLDIER PARK 8720 9.2 -M * 16.5 -M *
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Basin Index (%) 193 118
TONGUE RIVER
BIG GOOSE 7990 11.5 6.6 174 20.0 17.1 117
BONE SPRINGS DIV 9350 25.3 15.0 169 22.3 20.7 108
BURGESS JUNCTION 7880 16.5 9.3 177 21.2 16.8 126
DOME LAKE 8880 16.9 7.8 217 20.9 18.9 111
LITTLE GOOSE 8870 14.5 -M * 23.2 -M *
SUCKER CREEK 8880 18.0 9.7 186 25.6 20.0 128
TIE CREEK 6870 3.4 .0 * 19.9 17.2 116
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Basin Index (%) 189 117
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.6 14.7 120
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Basin Index (%) * 120
CHEYENNE RIVER BASIN
BLIND PARK 6890 .1 .0 * 20.8 16.5 126
NORTH RAPID CREEK 6130 .0 .0 * 20.0 14.4 139
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Basin Index (%) * 132
UPPER N. PLATTE
ARAPAHO RIDGE 10960 31.0 19.8 157 34.6 28.4 122
BLACKHALL MTN 9820 39.4 -M * -M -M *
COLUMBINE 9160 24.7 5.2 475 -M 30.5 *
DIVIDE PEAK 8880 10.9 7.7 142 29.8 26.3 113
JOE WRIGHT 10120 32.6 21.9 149 41.2 32.6 126
LAPRELE CREEK 8375 1.6 .0 * 16.8 16.8 100
MED BOW 10500 -M -M * 48.4 -M *
NORTH FRENCH CREEK 10130 40.0 30.8 130 42.3 33.5 126
NEVER SUMMER 10280 29.5 21.3 138 25.9 -M *
OLD BATTLE 10000 40.1 33.4 120 43.7 41.9 104
RAWAH 9020 6.8 .7 971* 23.2 18.8 123
SAGE CREEK BASIN 7850 .1 .0 * 14.6 17.2 85
SAND LAKE 10050 40.4 28.8 140 41.8 31.7 132
SOUTH BRUSH CREEK 8440 .1 .4 25* 19.7 19.9 99
TOWER 10500 55.9 48.6 115 60.4 47.6 127
WEBBER SPRINGS 9250 20.2 13.9 145 35.9 32.0 112
WILLOW CREEK PASS 9540 15.2 10.2 149 19.3 17.2 112
ZIRKEL 9340 33.0 13.0 254 -M 33.3 *
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Basin Index (%) 149 116
SWEETWATER
DEER PARK 9700 -M 11.8 * 24.2 25.9 93
LARSEN CREEK 9000 .0 4.2 0 17.9 -M *
SOUTH PASS 9040 11.9 8.5 140 19.2 22.3 86
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Basin Index (%) 94 90
LOWER N. PLATTE
CASPER MTN. 7900 14.3 6.4 223 21.1 20.3 104
LAPRELE CREEK 8375 1.6 .0 * 16.8 16.8 100
RENO HILL 8400 18.8 5.6 336 28.2 21.2 133
WINDY PEAK 7900 1.2 .0 * 16.9 14.7 115
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Basin Index (%) 299 114
LARAMIE RIVER
BROOKLYN LAKE 10240 30.1 18.0 167 37.9 27.0 140
CINNABAR PARK 9574 21.5 13.8 156 36.7 29.4 125
CROW CREEK 8330 .6 .0 * 17.8 15.0 119
DEADMAN HILL 10220 28.4 17.6 161 30.5 22.8 134
RAWAH 9020 6.8 .7 971* 23.2 18.8 123
ROACH 9700 19.3 12.6 153 30.9 24.5 126
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Basin Index (%) 170 129
S. PLATTE
BLACK MOUNTAIN 8920 5.5 -M * 19.0 -M *
CROW CREEK 8330 .6 .0 * 17.8 15.0 119
DEADMAN HILL 10220 28.4 17.6 161 30.5 22.8 134
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Basin Index (%) 165* 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.5 109
DIVIDE PEAK 8880 10.9 7.7 142 29.8 26.3 113
ELK RIVER 8700 8.1 .3 2700* 26.9 24.4 110
LITTLE SNAKE RIVER 8915 -M 15.5 * -M 35.0 *
OLD BATTLE 10000 40.1 33.4 120 43.7 41.9 104
SAGE CREEK BASIN 7850 .1 .0 * 14.6 17.2 85
SANDSTONE RS 8150 -M .0 * 20.7 22.4 92
WHISKEY PARK 8950 30.5 23.2 131 45.9 33.7 136
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Basin Index (%) 139* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.0 5.2 192 17.2 16.8 102
BLIND BULL SUM 8650 38.2 21.0 182 26.1 23.1 113
EAST RIM DIVIDE 7930 .0 1.8 0 17.8 14.0 127
ELKHART PARK G.S. 9400 15.3 6.9 222 20.3 16.6 122
GROS VENTRE SUMMIT 8750 10.8 7.0 154 16.9 16.0 106
GUNSIGHT PASS 9820 18.5 11.4 162 22.1 17.6 126
KENDALL R.S. 7740 7.8 .0 * 24.9 16.7 149
LOOMIS PARK 8240 13.1 4.0 328 27.7 20.4 136
NEW FORK LAKE 8340 3.9 .0 * 15.0 13.4 112
POCKET CREEK 9360 10.6 -M * 15.2 -M *
SNIDER BASIN 8060 .0 1.7 0 21.7 16.7 130
SPRING CREEK DIVIDE 9000 35.1 21.5 163 36.5 27.9 131
TRIPLE PEAK 8500 24.2 10.3 235 41.4 30.1 138
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Basin Index (%) 195 125
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.7 -M *
BUCK PASTURE 9700 5.6 -M * 21.2 -M *
EF BLACKS FORK GS 9360 -M -M * 13.9 -M *
HAMS FORK 7840 .0 .0 * 16.8 14.3 117
HEWINTA 9519 .0 .0 * 18.3 17.6 104
HICKERSON PARK 9145 .2 .0 * 12.1 13.3 91
HOLE-IN-ROCK 9150 .0 .0 * 13.3 12.9 103
INDIAN CREEK 9425 27.7 20.0 138 30.7 26.9 114
KELLEY R.S. 8180 8.7 4.3 202 23.6 21.6 109
SPIRIT LK 10235 4.3 -M * 18.7 -M *
STEEL CREEK PARK 10200 20.1 15.5 130 21.1 20.9 101
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Basin Index (%) 142* 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 11.5 7.4 155 24.4 23.3 105
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 14.7 17.2 85 27.5 30.7 90
HAYDEN FORK 9212 .1 .4 25* 25.1 25.6 98
KELLEY R.S. 8180 8.7 4.3 202 23.6 21.6 109
LILY LAKE 9156 2.5 .0 * 18.6 21.2 88
MONTE CRISTO 8960 17.3 16.7 104 30.0 31.4 96
SALT RIVER SUMMIT 7760 3.9 .0 * 22.3 19.8 113
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Basin Index (%) 128* 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.