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: MAY 16 , 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 9.5 .0 * 30.3 24.1 126
BLACK BEAR 8170 46.2 35.8 129 48.3 44.0 110
BLIND BULL SUM 8650 36.9 21.8 169 25.9 22.9 113
COTTONWOOD CREEK 7670 22.5 9.6 234 39.4 29.6 133
EAST RIM DIVIDE 7930 .6 3.3 18 17.4 13.9 125
GRAND TARGHEE 9260 53.0 44.6 119 44.7 36.7 122
GRANITE CREEK 6770 12.5 .4 3125* 27.5 22.6 122
GRASSY LAKE 7265 32.3 21.3 152 46.5 41.3 113
GROS VENTRE SUMMIT 8750 12.2 8.2 149 17.0 15.8 108
GUNSIGHT PASS 9820 19.5 12.0 162 22.1 17.5 126
LEWIS LAKE DIVIDE 7850 39.6 25.3 157 46.7 40.5 115
PHILLIPS BENCH 8200 33.7 21.5 157 39.6 32.5 122
SALT RIVER SUMMIT 7760 6.5 1.0 650* 22.1 19.6 113
SNAKE RIVER STATION 6920 4.7 .0 * 30.3 26.1 116
SPRING CREEK DIVIDE 9000 36.7 22.3 165 36.4 27.8 131
THUMB DIVIDE 7980 13.2 4.3 307 23.5 22.4 105
TOGWOTEE PASS 9580 34.0 24.1 141 37.4 29.2 128
TWO OCEAN PLATEAU 9240 40.7 29.1 140 39.7 32.3 123
WILLOW CREEK 8380 33.2 19.3 172 47.2 40.3 117
YOUNTS PEAK 8350 -M 13.3 * -M 19.2 *
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Basin Index (%) 160 119
MADISON-GALLATIN
BLACK BEAR 8170 46.2 35.8 129 48.3 44.0 110
CANYON 7870 10.8 4.8 225 20.3 19.5 104
MADISON PLATEAU 7750 25.0 16.5 152 30.7 30.9 99
WEST YELLOWSTONE 6700 .0 .0 * 19.5 17.2 113
WHISKEY CREEK 6800 13.7 8.1 169 26.1 23.8 110
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Basin Index (%) 147 107
YELLOWSTONE
BEARTOOTH LAKE 9360 34.1 22.5 152 34.8 23.8 146
BURNT MTN 5880 .0 .0 * 25.8 18.8 137
CANYON 7870 10.8 4.8 225 20.3 19.5 104
COLE CREEK 7850 26.3 16.9 156 22.7 19.0 119
EVENING STAR 9200 40.2 25.1 160 46.5 32.7 142
FISHER CREEK 9100 47.9 33.9 141 46.8 37.7 124
NORTHEAST ENTRANCE 7350 3.2 .0 * 19.4 15.1 128
PARKER PEAK 9400 38.2 21.3 179 35.3 22.0 160
SYLVAN LAKE 8420 22.6 16.7 135 35.3 27.1 130
THUMB DIVIDE 7980 13.2 4.3 307 23.5 22.4 105
TWO OCEAN PLATEAU 9240 40.7 29.1 140 39.7 32.3 123
WHITE MILL 8700 36.5 24.1 151 35.0 28.4 123
WOLVERINE 7650 4.1 .0 * 21.2 15.2 139
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Basin Index (%) 160 129
WIND RIVER
BURROUGHS CREEK 8750 -M 11.1 * -M 19.5 *
CASTLE CREEK 8400 .0 -M * 14.7 -M *
COLD SPRINGS 9630 .9 .0 * 15.7 14.1 111
DEER PARK 9700 16.9 13.0 130 24.1 25.6 94
HOBBS PARK 10100 15.9 14.6 109 18.4 18.7 98
KIRWIN 9550 19.5 10.1 193 22.1 15.5 143
LITTLE WARM 9370 10.4 5.6 186 20.1 17.0 118
OWL CREEK 8975 .0 .0 * 9.4 9.3 101
SOUTH PASS 9040 12.9 9.7 133 19.1 22.2 86
ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.2 96
TOGWOTEE PASS 9580 34.0 24.1 141 37.4 29.2 128
TOWNSEND CREEK 8700 2.2 .6 367* 14.1 16.7 84
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Basin Index (%) 145 106
BIGHORN BASIN
BALD MTN. 9380 31.7 20.5 155 25.3 21.8 116
BEAR TRAP MEADOW 8200 1.1 .0 * 14.0 12.2 115
BONE SPRINGS DIV 9350 26.5 15.6 170 22.2 20.4 109
GRAVE SPRINGS 8550 10.1 5.9 171 15.3 14.8 103
KIRWIN 9550 19.5 10.1 193 22.1 15.5 143
MARQUETTE 8760 15.6 -M * 17.8 -M *
MIDDLE POWDER 7760 15.3 8.3 184 17.4 15.9 109
OWL CREEK 8975 .0 .0 * 9.4 9.3 101
POWDER RIVER PASS 9480 13.2 8.0 165 20.2 16.8 120
SHELL CREEK 9580 21.9 16.4 134 21.2 18.2 116
TIMBER CREEK 7950 .0 .0 * 13.4 11.8 114
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Basin Index (%) 164 115
SHOSHONE RIVER
BLACKWATER 9780 36.1 24.9 145 34.7 25.4 137
EVENING STAR 9200 40.2 25.1 160 46.5 32.7 142
MARQUETTE 8760 15.6 -M * 17.8 -M *
SYLVAN ROAD 7120 .0 .0 * 25.6 19.9 129
YOUNTS PEAK 8350 -M 13.3 * -M 19.2 *
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Basin Index (%) 153* 137
POWDER RIVER
BEAR TRAP MEADOW 8200 1.1 .0 * 14.0 12.2 115
CLOUD PEAK RESERVOIR 9860 25.3 16.1 157 25.8 19.1 135
GRAVE SPRINGS 8550 10.1 5.9 171 15.3 14.8 103
HANSEN SAWMILL 8360 4.6 .0 * 16.1 12.5 129
MIDDLE POWDER 7760 15.3 8.3 184 17.4 15.9 109
POWDER RIVER PASS 9480 13.2 8.0 165 20.2 16.8 120
SOLDIER PARK 8720 9.8 -M * 16.5 -M *
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Basin Index (%) 182 119
TONGUE RIVER
BIG GOOSE 7990 11.9 8.2 145 19.8 16.7 119
BONE SPRINGS DIV 9350 26.5 15.6 170 22.2 20.4 109
BURGESS JUNCTION 7880 17.6 10.2 173 21.0 16.6 127
DOME LAKE 8880 17.4 9.2 189 20.6 18.6 111
LITTLE GOOSE 8870 14.7 -M * 22.9 -M *
SUCKER CREEK 8880 18.5 10.8 171 25.2 19.8 127
TIE CREEK 6870 4.5 .0 * 19.7 16.9 117
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Basin Index (%) 179 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.5 14.5 121
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Basin Index (%) * 121
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.6 16.3 126
NORTH RAPID CREEK 6130 .0 .0 * 19.7 14.2 139
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Basin Index (%) * 132
UPPER N. PLATTE
ARAPAHO RIDGE 10960 31.1 21.1 147 34.5 28.4 121
BLACKHALL MTN 9820 39.7 -M * -M -M *
COLUMBINE 9160 27.0 7.5 360 -M 30.3 *
DIVIDE PEAK 8880 12.5 9.6 130 29.6 26.1 113
JOE WRIGHT 10120 31.2 22.6 138 40.5 32.3 125
LAPRELE CREEK 8375 2.3 .0 * 16.7 16.5 101
MED BOW 10500 -M -M * 48.3 -M *
NORTH FRENCH CREEK 10130 40.3 31.8 127 42.1 33.2 127
NEVER SUMMER 10280 29.0 22.0 132 25.3 -M *
OLD BATTLE 10000 40.0 34.5 116 43.5 41.6 105
RAWAH 9020 7.5 1.2 625 22.7 18.8 121
SAGE CREEK BASIN 7850 1.9 .0 * 14.5 17.2 84
SAND LAKE 10050 40.3 29.9 135 41.7 31.4 133
SOUTH BRUSH CREEK 8440 1.3 1.0 130* 19.5 19.7 99
TOWER 10500 56.1 49.5 113 60.0 47.3 127
WEBBER SPRINGS 9250 20.5 15.6 131 35.8 31.8 113
WILLOW CREEK PASS 9540 15.7 11.0 143 19.1 17.0 112
ZIRKEL 9340 34.0 15.6 218 -M 33.3 *
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Basin Index (%) 143 116
SWEETWATER
DEER PARK 9700 16.9 13.0 130 24.1 25.6 94
LARSEN CREEK 9000 1.6 4.7 34 17.9 -M *
SOUTH PASS 9040 12.9 9.7 133 19.1 22.2 86
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Basin Index (%) 115 90
LOWER N. PLATTE
CASPER MTN. 7900 14.8 8.3 178 20.8 20.0 104
LAPRELE CREEK 8375 2.3 .0 * 16.7 16.5 101
RENO HILL 8400 18.9 7.2 262 28.0 21.0 133
WINDY PEAK 7900 2.2 .0 * 16.8 14.3 117
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Basin Index (%) 246 115
LARAMIE RIVER
BROOKLYN LAKE 10240 30.8 19.2 160 37.8 26.7 142
CINNABAR PARK 9574 22.5 14.8 152 36.6 29.2 125
CROW CREEK 8330 .3 .0 * 17.6 15.0 117
DEADMAN HILL 10220 28.6 18.2 157 30.1 22.5 134
RAWAH 9020 7.5 1.2 625 22.7 18.8 121
ROACH 9700 19.6 13.5 145 30.8 24.1 128
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Basin Index (%) 163 129
S. PLATTE
BLACK MOUNTAIN 8920 6.9 -M * 18.9 -M *
CROW CREEK 8330 .3 .0 * 17.6 15.0 117
DEADMAN HILL 10220 28.6 18.2 157 30.1 22.5 134
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Basin Index (%) 159* 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.0 18.4 109
DIVIDE PEAK 8880 12.5 9.6 130 29.6 26.1 113
ELK RIVER 8700 9.8 2.2 445 26.7 24.3 110
LITTLE SNAKE RIVER 8915 -M 17.3 * -M 35.0 *
OLD BATTLE 10000 40.0 34.5 116 43.5 41.6 105
SAGE CREEK BASIN 7850 1.9 .0 * 14.5 17.2 84
SANDSTONE RS 8150 -M .0 * 20.5 22.3 92
WHISKEY PARK 8950 33.4 24.2 138 45.6 33.6 136
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Basin Index (%) 138 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.7 7.0 167 17.2 16.6 104
BLIND BULL SUM 8650 36.9 21.8 169 25.9 22.9 113
EAST RIM DIVIDE 7930 .6 3.3 18 17.4 13.9 125
ELKHART PARK G.S. 9400 16.8 8.0 210 20.3 16.4 124
GROS VENTRE SUMMIT 8750 12.2 8.2 149 17.0 15.8 108
GUNSIGHT PASS 9820 19.5 12.0 162 22.1 17.5 126
KENDALL R.S. 7740 9.6 .0 * 24.8 16.5 150
LOOMIS PARK 8240 15.2 5.4 281 27.5 20.3 135
NEW FORK LAKE 8340 6.0 .7 857* 14.9 13.3 112
POCKET CREEK 9360 12.1 -M * 15.1 -M *
SNIDER BASIN 8060 .7 3.9 18 21.7 16.6 131
SPRING CREEK DIVIDE 9000 36.7 22.3 165 36.4 27.8 131
TRIPLE PEAK 8500 26.7 12.0 222 41.1 29.9 137
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Basin Index (%) 184 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.7 -M *
BUCK PASTURE 9700 7.9 -M * 21.2 -M *
EF BLACKS FORK GS 9360 .0 -M * 13.5 -M *
HAMS FORK 7840 .0 .0 * 16.8 14.2 118
HEWINTA 9519 .2 .0 * 18.3 17.5 105
HICKERSON PARK 9145 1.1 .0 * 12.1 13.2 92
HOLE-IN-ROCK 9150 .0 .0 * 13.4 12.8 105
INDIAN CREEK 9425 29.9 20.9 143 30.7 26.7 115
KELLEY R.S. 8180 10.8 5.8 186 23.6 21.5 110
SPIRIT LK 10235 5.2 -M * 18.7 -M *
STEEL CREEK PARK 10200 20.9 16.1 130 21.1 20.7 102
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Basin Index (%) 147* 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 13.9 9.4 148 24.4 23.2 105
BURTS MILLER RANCH 8000 .2 -M * 8.8 -M *
CHALK CREEK #1 8993 16.5 18.7 88 27.6 30.5 90
HAYDEN FORK 9212 1.3 2.1 62 25.2 25.5 99
KELLEY R.S. 8180 10.8 5.8 186 23.6 21.5 110
LILY LAKE 9156 4.8 .7 686* 18.6 21.1 88
MONTE CRISTO 8960 19.6 18.4 107 30.0 31.3 96
SALT RIVER SUMMIT 7760 6.5 1.0 650* 22.1 19.6 113
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Basin Index (%) 131 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.