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 10 , 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 13.1 4.4 298 29.8 23.6 126
BLACK BEAR 8170 45.5 36.8 124 47.8 43.1 111
BLIND BULL SUM 8650 38.1 22.4 170 25.6 22.2 115
COTTONWOOD CREEK 7670 23.9 12.8 187 38.3 28.8 133
EAST RIM DIVIDE 7930 4.6 5.9 78 17.3 13.5 128
GRAND TARGHEE 9260 53.3 46.4 115 44.6 36.1 124
GRANITE CREEK 6770 14.9 5.5 271 27.4 22.1 124
GRASSY LAKE 7265 34.0 25.9 131 45.8 40.6 113
GROS VENTRE SUMMIT 8750 13.4 9.6 140 16.8 15.4 109
GUNSIGHT PASS 9820 19.8 12.1 164 21.9 16.9 130
LEWIS LAKE DIVIDE 7850 40.8 29.3 139 45.8 39.7 115
PHILLIPS BENCH 8200 35.5 23.1 154 39.4 31.8 124
SALT RIVER SUMMIT 7760 8.1 4.5 180 21.7 19.1 114
SNAKE RIVER STATION 6920 8.2 2.5 328 29.7 25.6 116
SPRING CREEK DIVIDE 9000 35.8 23.7 151 35.6 27.1 131
THUMB DIVIDE 7980 15.7 8.4 187 23.2 21.8 106
TOGWOTEE PASS 9580 34.4 25.4 135 37.3 28.5 131
TWO OCEAN PLATEAU 9240 40.1 29.6 135 39.0 31.2 125
WILLOW CREEK 8380 33.8 21.1 160 46.1 39.2 118
YOUNTS PEAK 8350 -M 15.4 * -M 18.5 *
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Basin Index (%) 147 120
MADISON-GALLATIN
BLACK BEAR 8170 45.5 36.8 124 47.8 43.1 111
CANYON 7870 12.6 7.4 170 19.9 18.8 106
MADISON PLATEAU 7750 26.0 20.0 130 30.5 30.0 102
WEST YELLOWSTONE 6700 .1 .0 * 19.4 16.6 117
WHISKEY CREEK 6800 15.4 10.7 144 25.8 23.1 112
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Basin Index (%) 133 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.1 23.0 148 34.3 23.1 148
BURNT MTN 5880 .4 .0 * 24.6 17.4 141
CANYON 7870 12.6 7.4 170 19.9 18.8 106
COLE CREEK 7850 25.1 17.2 146 21.1 18.0 117
EVENING STAR 9200 41.6 25.4 164 46.0 31.8 145
FISHER CREEK 9100 48.7 34.3 142 46.1 36.6 126
NORTHEAST ENTRANCE 7350 6.1 .9 678* 19.1 14.6 131
PARKER PEAK 9400 38.2 22.0 174 34.9 21.2 165
SYLVAN LAKE 8420 23.6 18.1 130 34.7 26.3 132
THUMB DIVIDE 7980 15.7 8.4 187 23.2 21.8 106
TWO OCEAN PLATEAU 9240 40.1 29.6 135 39.0 31.2 125
WHITE MILL 8700 36.7 24.7 149 34.5 27.5 125
WOLVERINE 7650 8.3 .0 * 20.9 14.6 143
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Basin Index (%) 157 131
WIND RIVER
BURROUGHS CREEK 8750 -M 11.6 * -M 18.8 *
CASTLE CREEK 8400 1.0 -M * 14.5 -M *
COLD SPRINGS 9630 2.3 1.5 153 14.8 13.4 110
DEER PARK 9700 -M 14.4 * 22.4 24.6 91
HOBBS PARK 10100 14.6 15.9 92 16.5 17.8 93
KIRWIN 9550 19.5 10.9 179 21.1 14.8 143
LITTLE WARM 9370 11.1 6.6 168 19.7 16.2 122
OWL CREEK 8975 .1 .5 20* 9.1 8.6 106
SOUTH PASS 9040 11.9 11.8 101 17.1 21.3 80
ST. LAWRENCE ALT 8620 .2 1.0 20 11.4 12.4 92
TOGWOTEE PASS 9580 34.4 25.4 135 37.3 28.5 131
TOWNSEND CREEK 8700 1.1 3.9 28 11.8 15.8 75
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Basin Index (%) 123 104
BIGHORN BASIN
BALD MTN. 9380 30.7 20.6 149 24.5 21.1 116
BEAR TRAP MEADOW 8200 3.1 .0 * 13.1 11.6 113
BONE SPRINGS DIV 9350 25.4 16.6 153 21.3 19.7 108
GRAVE SPRINGS 8550 10.3 7.7 134 14.6 14.1 104
KIRWIN 9550 19.5 10.9 179 21.1 14.8 143
MARQUETTE 8760 14.8 -M * 16.9 -M *
MIDDLE POWDER 7760 15.7 10.8 145 16.8 15.4 109
OWL CREEK 8975 .1 .5 20* 9.1 8.6 106
POWDER RIVER PASS 9480 12.8 9.0 142 19.3 16.3 118
SHELL CREEK 9580 20.9 16.8 124 20.5 17.6 116
TIMBER CREEK 7950 1.4 1.5 93 12.9 11.0 117
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Basin Index (%) 148 115
SHOSHONE RIVER
BLACKWATER 9780 36.0 24.8 145 34.2 24.6 139
EVENING STAR 9200 41.6 25.4 164 46.0 31.8 145
MARQUETTE 8760 14.8 -M * 16.9 -M *
SYLVAN ROAD 7120 .0 1.5 0 25.6 19.3 133
YOUNTS PEAK 8350 -M 15.4 * -M 18.5 *
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Basin Index (%) 150 140
POWDER RIVER
BEAR TRAP MEADOW 8200 3.1 .0 * 13.1 11.6 113
CLOUD PEAK RESERVOIR 9860 23.7 16.8 141 24.3 18.2 134
GRAVE SPRINGS 8550 10.3 7.7 134 14.6 14.1 104
HANSEN SAWMILL 8360 4.5 1.2 375 15.5 11.9 130
MIDDLE POWDER 7760 15.7 10.8 145 16.8 15.4 109
POWDER RIVER PASS 9480 12.8 9.0 142 19.3 16.3 118
SOLDIER PARK 8720 9.4 -M * 15.7 -M *
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Basin Index (%) 154 118
TONGUE RIVER
BIG GOOSE 7990 11.1 10.4 107 18.7 15.7 119
BONE SPRINGS DIV 9350 25.4 16.6 153 21.3 19.7 108
BURGESS JUNCTION 7880 17.2 11.4 151 20.1 16.1 125
DOME LAKE 8880 16.4 11.2 146 19.5 17.9 109
LITTLE GOOSE 8870 13.7 -M * 21.7 -M *
SUCKER CREEK 8880 17.8 12.6 141 24.3 19.0 128
TIE CREEK 6870 4.9 1.5 327 19.1 15.9 120
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Basin Index (%) 146 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.3 13.5 128
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Basin Index (%) * 128
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.3 15.5 131
NORTH RAPID CREEK 6130 .0 .0 * 19.4 13.4 145
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Basin Index (%) * 137
UPPER N. PLATTE
ARAPAHO RIDGE 10960 27.5 22.4 123 31.3 27.5 114
BLACKHALL MTN 9820 35.8 -M * -M -M *
COLUMBINE 9160 25.3 12.7 199 -M 29.6 *
DIVIDE PEAK 8880 9.2 14.3 64 25.9 25.5 102
JOE WRIGHT 10120 28.1 23.2 121 38.0 31.4 121
LAPRELE CREEK 8375 1.1 2.8 39 14.6 16.1 91
MED BOW 10500 -M -M * 45.9 -M *
NORTH FRENCH CREEK 10130 38.3 32.7 117 40.2 32.4 124
NEVER SUMMER 10280 27.5 22.2 124 24.1 -M *
OLD BATTLE 10000 35.5 36.8 96 40.7 40.8 100
RAWAH 9020 6.3 2.7 233 21.2 18.2 116
SAGE CREEK BASIN 7850 .1 .0 * 14.1 16.9 83
SAND LAKE 10050 36.2 31.8 114 37.5 30.5 123
SOUTH BRUSH CREEK 8440 1.9 5.2 37 18.5 19.1 97
TOWER 10500 53.5 51.4 104 57.1 46.4 123
WEBBER SPRINGS 9250 16.8 19.4 87 31.7 31.1 102
WILLOW CREEK PASS 9540 14.4 13.4 107 17.5 16.5 106
ZIRKEL 9340 30.9 19.7 157 -M 32.4 *
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Basin Index (%) 113 110
SWEETWATER
DEER PARK 9700 -M 14.4 * 22.4 24.6 91
LARSEN CREEK 9000 3.4 6.5 52 17.6 -M *
SOUTH PASS 9040 11.9 11.8 101 17.1 21.3 80
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Basin Index (%) 84 86
LOWER N. PLATTE
CASPER MTN. 7900 12.3 11.4 108 19.1 19.4 98
LAPRELE CREEK 8375 1.1 2.8 39 14.6 16.1 91
RENO HILL 8400 16.6 10.5 158 25.2 20.1 125
WINDY PEAK 7900 1.1 .8 138 14.9 13.9 107
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Basin Index (%) 122 106
LARAMIE RIVER
BROOKLYN LAKE 10240 28.2 21.4 132 34.1 26.0 131
CINNABAR PARK 9574 21.5 17.4 124 32.8 28.2 116
CROW CREEK 8330 .0 .0 * 15.2 14.3 106
DEADMAN HILL 10220 26.9 18.5 145 28.2 21.7 130
RAWAH 9020 6.3 2.7 233 21.2 18.2 116
ROACH 9700 16.7 15.9 105 27.5 23.3 118
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Basin Index (%) 131 121
S. PLATTE
BLACK MOUNTAIN 8920 6.0 -M * -M -M *
CROW CREEK 8330 .0 .0 * 15.2 14.3 106
DEADMAN HILL 10220 26.9 18.5 145 28.2 21.7 130
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Basin Index (%) 145* 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.4 18.0 108
DIVIDE PEAK 8880 9.2 14.3 64 25.9 25.5 102
ELK RIVER 8700 9.4 7.8 121 25.3 23.7 107
LITTLE SNAKE RIVER 8915 -M 20.4 * -M 34.4 *
OLD BATTLE 10000 35.5 36.8 96 40.7 40.8 100
SAGE CREEK BASIN 7850 .1 .0 * 14.1 16.9 83
SANDSTONE RS 8150 .0 1.9 0 19.6 21.8 90
WHISKEY PARK 8950 39.4 26.8 147 44.0 32.9 134
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Basin Index (%) 107 105
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 8.6 144 16.9 16.1 105
BLIND BULL SUM 8650 38.1 22.4 170 25.6 22.2 115
EAST RIM DIVIDE 7930 4.6 5.9 78 17.3 13.5 128
ELKHART PARK G.S. 9400 16.9 9.6 176 19.7 15.8 125
GROS VENTRE SUMMIT 8750 13.4 9.6 140 16.8 15.4 109
GUNSIGHT PASS 9820 19.8 12.1 164 21.9 16.9 130
KENDALL R.S. 7740 12.4 .0 * 24.8 16.2 153
LOOMIS PARK 8240 17.0 7.3 233 27.2 19.7 138
NEW FORK LAKE 8340 8.3 2.6 319 14.5 12.8 113
POCKET CREEK 9360 12.4 -M * 14.8 -M *
SNIDER BASIN 8060 5.0 7.4 68 20.8 16.2 128
SPRING CREEK DIVIDE 9000 35.8 23.7 151 35.6 27.1 131
TRIPLE PEAK 8500 27.7 14.9 186 40.3 29.1 138
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Basin Index (%) 170 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 15.8 -M *
BUCK PASTURE 9700 8.4 -M * 20.4 -M *
EF BLACKS FORK GS 9360 .8 -M * 11.9 -M *
HAMS FORK 7840 2.5 .1 2500* 16.0 13.8 116
HEWINTA 9519 .0 2.0 0 16.9 17.1 99
HICKERSON PARK 9145 .1 .1 100* 9.7 12.8 76
HOLE-IN-ROCK 9150 .0 .0 * 11.2 12.3 91
INDIAN CREEK 9425 29.9 21.0 142 29.7 26.0 114
KELLEY R.S. 8180 11.9 8.4 142 22.9 21.0 109
SPIRIT LK 10235 3.4 -M * 15.8 -M *
STEEL CREEK PARK 10200 19.6 17.7 111 19.2 20.1 96
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Basin Index (%) 130* 102
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.9 -M *
BUG LAKE 7950 16.1 12.2 132 24.3 22.6 108
BURTS MILLER RANCH 8000 .2 -M * 8.4 -M *
CHALK CREEK #1 8993 17.2 21.5 80 27.1 29.7 91
HAYDEN FORK 9212 4.1 5.9 69 24.9 24.8 100
KELLEY R.S. 8180 11.9 8.4 142 22.9 21.0 109
LILY LAKE 9156 6.2 5.4 115 18.3 20.5 89
MONTE CRISTO 8960 20.5 21.5 95 29.5 30.6 96
SALT RIVER SUMMIT 7760 8.1 4.5 180 21.7 19.1 114
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Basin Index (%) 106 100
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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.