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 TUESDAY: MAY 13 , 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 2.7 485 30.3 23.9 127
BLACK BEAR 8170 45.9 36.5 126 48.3 43.6 111
BLIND BULL SUM 8650 36.9 22.2 166 25.8 22.6 114
COTTONWOOD CREEK 7670 24.6 11.6 212 39.3 29.3 134
EAST RIM DIVIDE 7930 4.1 5.0 82 17.3 13.8 125
GRAND TARGHEE 9260 53.7 45.9 117 44.5 36.5 122
GRANITE CREEK 6770 14.4 3.2 450 27.5 22.4 123
GRASSY LAKE 7265 34.4 23.9 144 46.4 41.0 113
GROS VENTRE SUMMIT 8750 13.3 9.2 145 16.9 15.6 108
GUNSIGHT PASS 9820 20.2 12.4 163 21.9 17.4 126
LEWIS LAKE DIVIDE 7850 41.3 27.9 148 46.6 40.1 116
PHILLIPS BENCH 8200 35.3 22.5 157 39.4 32.3 122
SALT RIVER SUMMIT 7760 8.5 2.7 315 22.3 19.4 115
SNAKE RIVER STATION 6920 8.6 .6 1433* 30.4 25.8 118
SPRING CREEK DIVIDE 9000 36.6 23.1 158 36.3 27.5 132
THUMB DIVIDE 7980 15.7 6.8 231 23.3 22.1 105
TOGWOTEE PASS 9580 35.1 25.1 140 37.5 29.0 129
TWO OCEAN PLATEAU 9240 40.4 29.4 137 39.6 32.0 124
WILLOW CREEK 8380 34.7 20.2 172 47.2 39.9 118
YOUNTS PEAK 8350 -M 14.5 * -M 18.9 *
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Basin Index (%) 156 120
MADISON-GALLATIN
BLACK BEAR 8170 45.9 36.5 126 48.3 43.6 111
CANYON 7870 12.9 6.3 205 20.3 19.2 106
MADISON PLATEAU 7750 26.3 18.4 143 30.7 30.3 101
WEST YELLOWSTONE 6700 .0 .0 * 19.6 16.9 116
WHISKEY CREEK 6800 15.2 9.5 160 26.1 23.4 112
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Basin Index (%) 142 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.7 22.8 152 34.7 23.5 148
BURNT MTN 5880 .0 .0 * 25.3 18.7 135
CANYON 7870 12.9 6.3 205 20.3 19.2 106
COLE CREEK 7850 26.7 17.1 156 22.6 18.8 120
EVENING STAR 9200 41.7 25.5 164 46.4 32.3 144
FISHER CREEK 9100 48.9 34.4 142 46.8 37.2 126
NORTHEAST ENTRANCE 7350 6.2 .5 1240* 19.3 14.9 130
PARKER PEAK 9400 38.3 22.0 174 35.2 21.6 163
SYLVAN LAKE 8420 24.0 17.5 137 35.3 26.8 132
THUMB DIVIDE 7980 15.7 6.8 231 23.3 22.1 105
TWO OCEAN PLATEAU 9240 40.4 29.4 137 39.6 32.0 124
WHITE MILL 8700 36.9 24.8 149 34.8 28.0 124
WOLVERINE 7650 7.4 .0 * 21.0 15.0 140
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Basin Index (%) 161 130
WIND RIVER
BURROUGHS CREEK 8750 -M 11.4 * -M 19.3 *
CASTLE CREEK 8400 .0 -M * 14.5 -M *
COLD SPRINGS 9630 2.4 .8 300 15.4 13.9 111
DEER PARK 9700 17.4 14.2 123 23.8 25.4 94
HOBBS PARK 10100 15.9 15.6 102 18.1 18.5 98
KIRWIN 9550 20.2 10.7 189 21.8 15.2 143
LITTLE WARM 9370 11.4 6.5 175 20.0 16.8 119
OWL CREEK 8975 .0 .3 0* 9.2 9.1 101
SOUTH PASS 9040 13.3 10.9 122 18.9 21.9 86
ST. LAWRENCE ALT 8620 1.2 .4 300* 12.3 13.0 95
TOGWOTEE PASS 9580 35.1 25.1 140 37.5 29.0 129
TOWNSEND CREEK 8700 2.7 2.3 117 13.8 16.5 84
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Basin Index (%) 138 106
BIGHORN BASIN
BALD MTN. 9380 31.5 20.8 151 25.0 21.5 116
BEAR TRAP MEADOW 8200 2.9 .0 * 13.8 12.0 115
BONE SPRINGS DIV 9350 25.8 16.3 158 21.7 20.1 108
GRAVE SPRINGS 8550 10.3 7.1 145 14.9 14.6 102
KIRWIN 9550 20.2 10.7 189 21.8 15.2 143
MARQUETTE 8760 15.7 -M * 17.7 -M *
MIDDLE POWDER 7760 16.0 9.9 162 17.3 15.7 110
OWL CREEK 8975 .0 .3 0* 9.2 9.1 101
POWDER RIVER PASS 9480 13.1 8.7 151 19.7 16.6 119
SHELL CREEK 9580 21.5 16.8 128 21.0 18.0 117
TIMBER CREEK 7950 1.7 .8 212 13.4 11.6 116
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Basin Index (%) 156 115
SHOSHONE RIVER
BLACKWATER 9780 36.3 24.6 148 34.5 25.1 137
EVENING STAR 9200 41.7 25.5 164 46.4 32.3 144
MARQUETTE 8760 15.7 -M * 17.7 -M *
SYLVAN ROAD 7120 .0 .2 0* 25.7 19.6 131
YOUNTS PEAK 8350 -M 14.5 * -M 18.9 *
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Basin Index (%) 155* 138
POWDER RIVER
BEAR TRAP MEADOW 8200 2.9 .0 * 13.8 12.0 115
CLOUD PEAK RESERVOIR 9860 24.3 16.6 146 25.0 18.8 133
GRAVE SPRINGS 8550 10.3 7.1 145 14.9 14.6 102
HANSEN SAWMILL 8360 4.8 .4 1200* 15.8 12.3 128
MIDDLE POWDER 7760 16.0 9.9 162 17.3 15.7 110
POWDER RIVER PASS 9480 13.1 8.7 151 19.7 16.6 119
SOLDIER PARK 8720 9.6 -M * 16.0 -M *
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Basin Index (%) 167 118
TONGUE RIVER
BIG GOOSE 7990 11.6 9.6 121 19.4 16.5 118
BONE SPRINGS DIV 9350 25.8 16.3 158 21.7 20.1 108
BURGESS JUNCTION 7880 17.6 11.2 157 20.6 16.4 126
DOME LAKE 8880 16.8 10.7 157 20.3 18.4 110
LITTLE GOOSE 8870 14.3 -M * 22.4 -M *
SUCKER CREEK 8880 18.3 12.2 150 24.8 19.5 127
TIE CREEK 6870 5.0 .6 833 19.3 16.7 116
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Basin Index (%) 157 117
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.0 14.2 120
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Basin Index (%) * 120
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.5 16.0 128
NORTH RAPID CREEK 6130 .0 .0 * 19.5 14.1 138
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Basin Index (%) * 133
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.6 22.1 138 34.5 28.0 123
BLACKHALL MTN 9820 39.6 -M * -M -M *
COLUMBINE 9160 27.2 10.3 264 -M 29.9 *
DIVIDE PEAK 8880 13.3 12.2 109 29.5 25.8 114
JOE WRIGHT 10120 30.7 23.1 133 40.4 31.9 127
LAPRELE CREEK 8375 2.3 .6 383* 16.4 16.3 101
MED BOW 10500 -M -M * 48.1 -M *
NORTH FRENCH CREEK 10130 40.4 32.3 125 42.1 32.8 128
NEVER SUMMER 10280 28.6 22.2 129 25.2 -M *
OLD BATTLE 10000 39.5 36.4 109 43.3 41.3 105
RAWAH 9020 8.0 1.8 444 22.4 18.6 120
SAGE CREEK BASIN 7850 3.1 .0 * 14.5 17.1 85
SAND LAKE 10050 40.1 31.3 128 40.8 31.0 132
SOUTH BRUSH CREEK 8440 2.2 2.8 79 19.4 19.4 100
TOWER 10500 55.9 50.7 110 59.5 47.0 127
WEBBER SPRINGS 9250 20.9 17.7 118 35.7 31.5 113
WILLOW CREEK PASS 9540 15.6 12.2 128 18.8 16.7 113
ZIRKEL 9340 -M 18.3 * -M 33.1 *
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Basin Index (%) 130 117
SWEETWATER
DEER PARK 9700 17.4 14.2 123 23.8 25.4 94
LARSEN CREEK 9000 3.4 5.6 61 17.8 -M *
SOUTH PASS 9040 13.3 10.9 122 18.9 21.9 86
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Basin Index (%) 111 90
LOWER N. PLATTE
CASPER MTN. 7900 14.7 10.4 141 20.4 19.8 103
LAPRELE CREEK 8375 2.3 .6 383* 16.4 16.3 101
RENO HILL 8400 18.9 8.9 212 27.3 20.6 133
WINDY PEAK 7900 2.7 .0 * 16.7 14.1 118
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Basin Index (%) 194 114
LARAMIE RIVER
BROOKLYN LAKE 10240 31.2 20.5 152 37.6 26.4 142
CINNABAR PARK 9574 24.1 16.3 148 36.7 29.0 127
CROW CREEK 8330 1.5 .0 * 17.4 14.7 118
DEADMAN HILL 10220 28.9 18.4 157 29.9 22.1 135
RAWAH 9020 8.0 1.8 444 22.4 18.6 120
ROACH 9700 19.8 14.6 136 30.7 23.7 130
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Basin Index (%) 159 130
S. PLATTE
BLACK MOUNTAIN 8920 7.6 -M * -M -M *
CROW CREEK 8330 1.5 .0 * 17.4 14.7 118
DEADMAN HILL 10220 28.9 18.4 157 29.9 22.1 135
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Basin Index (%) 165* 129
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.9 18.3 109
DIVIDE PEAK 8880 13.3 12.2 109 29.5 25.8 114
ELK RIVER 8700 10.5 5.2 202 26.5 24.1 110
LITTLE SNAKE RIVER 8915 -M 19.3 * -M 34.8 *
OLD BATTLE 10000 39.5 36.4 109 43.3 41.3 105
SAGE CREEK BASIN 7850 3.1 .0 * 14.5 17.1 85
SANDSTONE RS 8150 -M .0 * 20.2 22.1 91
WHISKEY PARK 8950 37.5 25.6 146 45.7 33.3 137
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Basin Index (%) 131 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.5 8.4 149 17.0 16.4 104
BLIND BULL SUM 8650 36.9 22.2 166 25.8 22.6 114
EAST RIM DIVIDE 7930 4.1 5.0 82 17.3 13.8 125
ELKHART PARK G.S. 9400 17.2 9.2 187 20.0 16.3 123
GROS VENTRE SUMMIT 8750 13.3 9.2 145 16.9 15.6 108
GUNSIGHT PASS 9820 20.2 12.4 163 21.9 17.4 126
KENDALL R.S. 7740 11.6 .0 * 24.8 16.4 151
LOOMIS PARK 8240 17.0 6.5 262 27.4 20.1 136
NEW FORK LAKE 8340 8.2 1.7 482 14.7 13.1 112
POCKET CREEK 9360 12.6 -M * 14.9 -M *
SNIDER BASIN 8060 4.0 6.4 62 21.4 16.5 130
SPRING CREEK DIVIDE 9000 36.6 23.1 158 36.3 27.5 132
TRIPLE PEAK 8500 28.0 13.8 203 40.8 29.6 138
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Basin Index (%) 178 126
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .5 -M * 16.7 -M *
BUCK PASTURE 9700 9.4 -M * 21.3 -M *
EF BLACKS FORK GS 9360 1.7 -M * 13.3 -M *
HAMS FORK 7840 1.9 .0 * 16.7 14.1 118
HEWINTA 9519 1.9 .3 633* 18.1 17.3 105
HICKERSON PARK 9145 2.9 .0 * 12.1 13.0 93
HOLE-IN-ROCK 9150 1.5 .0 * 13.3 12.6 106
INDIAN CREEK 9425 30.7 21.3 144 30.5 26.5 115
KELLEY R.S. 8180 12.4 7.4 168 23.3 21.4 109
SPIRIT LK 10235 6.1 -M * 18.7 -M *
STEEL CREEK PARK 10200 21.6 17.2 126 21.2 20.5 103
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Basin Index (%) 158* 108
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 16.1 11.4 141 24.4 22.9 107
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 17.7 20.3 87 27.6 30.2 91
HAYDEN FORK 9212 4.0 4.5 89 25.2 25.3 100
KELLEY R.S. 8180 12.4 7.4 168 23.3 21.4 109
LILY LAKE 9156 7.0 2.8 250 18.7 20.9 89
MONTE CRISTO 8960 21.1 20.1 105 29.9 31.1 96
SALT RIVER SUMMIT 7760 8.5 2.7 315 22.3 19.4 115
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Basin Index (%) 125 100
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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.