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 WEDNESDAY: MAY 14 , 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 12.1 2.0 605 30.3 24.0 126
BLACK BEAR 8170 45.9 36.3 126 48.3 43.7 111
BLIND BULL SUM 8650 37.0 22.1 167 25.9 22.7 114
COTTONWOOD CREEK 7670 24.1 10.9 221 39.4 29.4 134
EAST RIM DIVIDE 7930 3.0 4.5 67 17.4 13.8 126
GRAND TARGHEE 9260 53.5 45.5 118 44.6 36.6 122
GRANITE CREEK 6770 14.6 2.4 608 27.5 22.5 122
GRASSY LAKE 7265 34.2 23.1 148 46.5 41.1 113
GROS VENTRE SUMMIT 8750 13.1 9.0 146 17.1 15.7 109
GUNSIGHT PASS 9820 19.8 12.4 160 21.9 17.4 126
LEWIS LAKE DIVIDE 7850 41.0 27.1 151 46.6 40.2 116
PHILLIPS BENCH 8200 35.1 22.3 157 39.5 32.3 122
SALT RIVER SUMMIT 7760 8.4 2.1 400 22.3 19.4 115
SNAKE RIVER STATION 6920 7.8 .0 * 30.4 25.9 117
SPRING CREEK DIVIDE 9000 36.7 22.8 161 36.3 27.6 132
THUMB DIVIDE 7980 15.5 5.9 263 23.4 22.2 105
TOGWOTEE PASS 9580 35.3 24.8 142 37.4 29.1 129
TWO OCEAN PLATEAU 9240 40.6 29.3 139 39.6 32.1 123
WILLOW CREEK 8380 34.7 19.7 176 47.2 40.0 118
YOUNTS PEAK 8350 -M 14.2 * -M 19.0 *
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Basin Index (%) 159 120
MADISON-GALLATIN
BLACK BEAR 8170 45.9 36.3 126 48.3 43.7 111
CANYON 7870 12.6 5.8 217 20.3 19.3 105
MADISON PLATEAU 7750 25.9 17.8 146 30.7 30.5 101
WEST YELLOWSTONE 6700 .0 .0 * 19.5 17.0 115
WHISKEY CREEK 6800 14.9 9.1 164 26.1 23.6 111
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Basin Index (%) 144 108
YELLOWSTONE
BEARTOOTH LAKE 9360 34.8 22.7 153 34.7 23.6 147
BURNT MTN 5880 .0 .0 * 25.5 18.7 136
CANYON 7870 12.6 5.8 217 20.3 19.3 105
COLE CREEK 7850 26.7 17.2 155 22.7 18.9 120
EVENING STAR 9200 41.9 25.4 165 46.5 32.4 144
FISHER CREEK 9100 48.8 34.3 142 46.8 37.3 125
NORTHEAST ENTRANCE 7350 5.5 .2 2750* 19.3 15.0 129
PARKER PEAK 9400 38.3 21.9 175 35.3 21.7 163
SYLVAN LAKE 8420 23.9 17.3 138 35.2 26.8 131
THUMB DIVIDE 7980 15.5 5.9 263 23.4 22.2 105
TWO OCEAN PLATEAU 9240 40.6 29.3 139 39.6 32.1 123
WHITE MILL 8700 36.8 24.6 150 34.8 28.2 123
WOLVERINE 7650 7.2 .0 * 21.0 15.0 140
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Basin Index (%) 163 130
WIND RIVER
BURROUGHS CREEK 8750 -M 11.4 * -M 19.3 *
CASTLE CREEK 8400 .0 -M * 14.6 -M *
COLD SPRINGS 9630 2.1 .5 420* 15.7 14.0 112
DEER PARK 9700 17.4 13.9 125 23.8 25.5 93
HOBBS PARK 10100 15.9 15.3 104 18.2 18.6 98
KIRWIN 9550 20.1 10.5 191 22.1 15.3 144
LITTLE WARM 9370 11.3 6.4 177 20.1 16.8 120
OWL CREEK 8975 .0 .0 * 9.3 9.1 102
SOUTH PASS 9040 13.3 10.5 127 19.1 22.0 87
ST. LAWRENCE ALT 8620 1.0 .2 500* 12.4 13.0 95
TOGWOTEE PASS 9580 35.3 24.8 142 37.4 29.1 129
TOWNSEND CREEK 8700 2.5 1.8 139 13.8 16.5 84
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Basin Index (%) 142 107
BIGHORN BASIN
BALD MTN. 9380 31.5 20.8 151 25.2 21.6 117
BEAR TRAP MEADOW 8200 2.7 .0 * 13.9 12.1 115
BONE SPRINGS DIV 9350 25.9 16.2 160 21.9 20.2 108
GRAVE SPRINGS 8550 10.3 6.8 151 15.1 14.7 103
KIRWIN 9550 20.1 10.5 191 22.1 15.3 144
MARQUETTE 8760 15.8 -M * 17.8 -M *
MIDDLE POWDER 7760 16.1 9.4 171 17.4 15.8 110
OWL CREEK 8975 .0 .0 * 9.3 9.1 102
POWDER RIVER PASS 9480 13.0 8.5 153 19.9 16.7 119
SHELL CREEK 9580 21.6 16.7 129 21.1 18.1 117
TIMBER CREEK 7950 1.7 .2 850* 13.4 11.7 115
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Basin Index (%) 160 115
SHOSHONE RIVER
BLACKWATER 9780 36.2 24.6 147 34.6 25.2 137
EVENING STAR 9200 41.9 25.4 165 46.5 32.4 144
MARQUETTE 8760 15.8 -M * 17.8 -M *
SYLVAN ROAD 7120 .0 .1 0* 25.7 19.7 130
YOUNTS PEAK 8350 -M 14.2 * -M 19.0 *
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Basin Index (%) 156* 138
POWDER RIVER
BEAR TRAP MEADOW 8200 2.7 .0 * 13.9 12.1 115
CLOUD PEAK RESERVOIR 9860 24.5 16.4 149 25.1 18.8 134
GRAVE SPRINGS 8550 10.3 6.8 151 15.1 14.7 103
HANSEN SAWMILL 8360 4.7 .0 * 15.9 12.4 128
MIDDLE POWDER 7760 16.1 9.4 171 17.4 15.8 110
POWDER RIVER PASS 9480 13.0 8.5 153 19.9 16.7 119
SOLDIER PARK 8720 9.5 -M * 16.1 -M *
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Basin Index (%) 173 119
TONGUE RIVER
BIG GOOSE 7990 11.7 9.2 127 19.6 16.6 118
BONE SPRINGS DIV 9350 25.9 16.2 160 21.9 20.2 108
BURGESS JUNCTION 7880 17.7 10.9 162 20.8 16.5 126
DOME LAKE 8880 16.9 10.3 164 20.4 18.5 110
LITTLE GOOSE 8870 14.4 -M * 22.5 -M *
SUCKER CREEK 8880 18.4 11.8 156 25.0 19.6 128
TIE CREEK 6870 5.0 .5 1000* 19.4 16.7 116
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Basin Index (%) 162 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.2 14.3 120
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Basin Index (%) * 120
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.6 16.1 128
NORTH RAPID CREEK 6130 .0 .0 * 19.6 14.1 139
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Basin Index (%) * 133
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.8 21.9 141 34.6 28.1 123
BLACKHALL MTN 9820 39.6 -M * -M -M *
COLUMBINE 9160 27.3 9.4 290 -M 30.1 *
DIVIDE PEAK 8880 13.2 11.3 117 29.5 25.9 114
JOE WRIGHT 10120 30.7 23.0 133 40.4 32.0 126
LAPRELE CREEK 8375 2.2 .0 * 16.6 16.4 101
MED BOW 10500 -M -M * 48.2 -M *
NORTH FRENCH CREEK 10130 40.4 32.2 125 42.2 33.0 128
NEVER SUMMER 10280 28.5 22.2 128 25.3 -M *
OLD BATTLE 10000 39.8 35.8 111 43.5 41.5 105
RAWAH 9020 8.0 1.5 533 22.6 18.7 121
SAGE CREEK BASIN 7850 2.8 .0 * 14.6 17.1 85
SAND LAKE 10050 40.2 30.9 130 41.7 31.1 134
SOUTH BRUSH CREEK 8440 2.2 2.1 105 19.4 19.5 99
TOWER 10500 55.9 50.3 111 59.5 47.1 126
WEBBER SPRINGS 9250 21.0 17.1 123 35.6 31.6 113
WILLOW CREEK PASS 9540 15.6 11.8 132 18.8 16.9 111
ZIRKEL 9340 34.1 17.6 194 -M 33.1 *
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Basin Index (%) 137 117
SWEETWATER
DEER PARK 9700 17.4 13.9 125 23.8 25.5 93
LARSEN CREEK 9000 3.2 5.3 60 17.8 -M *
SOUTH PASS 9040 13.3 10.5 127 19.1 22.0 87
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Basin Index (%) 114 90
LOWER N. PLATTE
CASPER MTN. 7900 14.8 9.8 151 20.5 19.9 103
LAPRELE CREEK 8375 2.2 .0 * 16.6 16.4 101
RENO HILL 8400 19.0 8.4 226 27.5 20.7 133
WINDY PEAK 7900 2.6 .0 * 16.7 14.2 118
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Basin Index (%) 212 114
LARAMIE RIVER
BROOKLYN LAKE 10240 31.1 20.2 154 37.8 26.5 143
CINNABAR PARK 9574 23.5 15.8 149 36.7 29.2 126
CROW CREEK 8330 1.3 .0 * 17.4 14.8 118
DEADMAN HILL 10220 28.8 18.4 157 30.2 22.3 135
RAWAH 9020 8.0 1.5 533 22.6 18.7 121
ROACH 9700 19.9 14.2 140 30.9 23.9 129
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Basin Index (%) 161 130
S. PLATTE
BLACK MOUNTAIN 8920 7.4 -M * -M -M *
CROW CREEK 8330 1.3 .0 * 17.4 14.8 118
DEADMAN HILL 10220 28.8 18.4 157 30.2 22.3 135
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Basin Index (%) 164* 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.9 18.3 109
DIVIDE PEAK 8880 13.2 11.3 117 29.5 25.9 114
ELK RIVER 8700 10.4 4.2 248 26.5 24.1 110
LITTLE SNAKE RIVER 8915 -M 18.7 * -M 34.9 *
OLD BATTLE 10000 39.8 35.8 111 43.5 41.5 105
SAGE CREEK BASIN 7850 2.8 .0 * 14.6 17.1 85
SANDSTONE RS 8150 -M .0 * 20.3 22.2 91
WHISKEY PARK 8950 36.1 25.1 144 45.6 33.4 137
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Basin Index (%) 134 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 8.1 153 17.2 16.5 104
BLIND BULL SUM 8650 37.0 22.1 167 25.9 22.7 114
EAST RIM DIVIDE 7930 3.0 4.5 67 17.4 13.8 126
ELKHART PARK G.S. 9400 17.2 8.9 193 20.3 16.3 125
GROS VENTRE SUMMIT 8750 13.1 9.0 146 17.1 15.7 109
GUNSIGHT PASS 9820 19.8 12.4 160 21.9 17.4 126
KENDALL R.S. 7740 11.2 .0 * 24.8 16.4 151
LOOMIS PARK 8240 16.9 6.2 273 27.5 20.2 136
NEW FORK LAKE 8340 8.0 1.4 571 14.8 13.2 112
POCKET CREEK 9360 12.7 -M * 15.0 -M *
SNIDER BASIN 8060 3.4 5.6 61 21.5 16.5 130
SPRING CREEK DIVIDE 9000 36.7 22.8 161 36.3 27.6 132
TRIPLE PEAK 8500 27.8 13.3 209 41.1 29.7 138
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Basin Index (%) 181 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .2 -M * 16.8 -M *
BUCK PASTURE 9700 9.2 -M * 21.3 -M *
EF BLACKS FORK GS 9360 1.5 -M * 13.3 -M *
HAMS FORK 7840 1.2 .0 * 16.7 14.1 118
HEWINTA 9519 1.9 .2 950* 18.2 17.4 105
HICKERSON PARK 9145 2.6 .0 * 12.0 13.1 92
HOLE-IN-ROCK 9150 1.3 .0 * 13.3 12.7 105
INDIAN CREEK 9425 30.8 21.3 145 30.6 26.6 115
KELLEY R.S. 8180 12.3 7.0 176 23.5 21.4 110
SPIRIT LK 10235 6.0 -M * 18.7 -M *
STEEL CREEK PARK 10200 21.1 16.9 125 21.1 20.6 102
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Basin Index (%) 157* 108
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 16.0 10.9 147 24.4 23.0 106
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 17.7 19.9 89 27.6 30.4 91
HAYDEN FORK 9212 3.4 3.8 89 25.2 25.4 99
KELLEY R.S. 8180 12.3 7.0 176 23.5 21.4 110
LILY LAKE 9156 6.3 2.1 300 18.7 21.0 89
MONTE CRISTO 8960 21.0 19.6 107 29.9 31.2 96
SALT RIVER SUMMIT 7760 8.4 2.1 400 22.3 19.4 115
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Basin Index (%) 130 100
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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.