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 20 , 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 5.5 .0 * 30.3 24.5 124
BLACK BEAR 8170 43.5 33.8 129 48.5 44.6 109
BLIND BULL SUM 8650 38.9 19.9 195 26.1 23.2 112
COTTONWOOD CREEK 7670 19.2 6.3 305 39.6 30.0 132
EAST RIM DIVIDE 7930 .0 .5 0* 17.8 14.1 126
GRAND TARGHEE 9260 49.6 42.3 117 44.8 36.8 122
GRANITE CREEK 6770 9.4 .0 * 27.6 22.9 121
GRASSY LAKE 7265 26.6 17.4 153 46.4 41.8 111
GROS VENTRE SUMMIT 8750 9.5 5.6 170 16.8 16.1 104
GUNSIGHT PASS 9820 17.4 10.4 167 22.1 17.7 125
LEWIS LAKE DIVIDE 7850 34.8 22.4 155 46.8 41.0 114
PHILLIPS BENCH 8200 29.6 19.2 154 39.7 32.8 121
SALT RIVER SUMMIT 7760 2.1 .0 * 22.2 19.9 112
SNAKE RIVER STATION 6920 .0 .0 * 30.4 26.5 115
SPRING CREEK DIVIDE 9000 -M 20.3 * -M 28.0 *
THUMB DIVIDE 7980 9.4 1.4 671* 23.6 22.8 104
TOGWOTEE PASS 9580 31.6 23.0 137 37.5 29.7 126
TWO OCEAN PLATEAU 9240 40.1 28.3 142 39.9 32.8 122
WILLOW CREEK 8380 28.1 16.6 169 47.4 40.8 116
YOUNTS PEAK 8350 -M 11.8 * -M 19.5 *
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Basin Index (%) 160 117
MADISON-GALLATIN
BLACK BEAR 8170 43.5 33.8 129 48.5 44.6 109
CANYON 7870 8.0 2.2 364 20.3 19.9 102
MADISON PLATEAU 7750 21.0 14.3 147 30.8 31.5 98
WEST YELLOWSTONE 6700 .0 .0 * 19.7 17.5 113
WHISKEY CREEK 6800 10.5 5.6 188 26.1 24.3 107
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Basin Index (%) 148 106
YELLOWSTONE
BEARTOOTH LAKE 9360 32.8 21.6 152 34.9 24.1 145
BURNT MTN 5880 .0 .0 * 26.0 19.1 136
CANYON 7870 8.0 2.2 364 20.3 19.9 102
COLE CREEK 7850 26.1 16.2 161 22.6 19.5 116
EVENING STAR 9200 37.9 23.7 160 46.6 33.3 140
FISHER CREEK 9100 46.7 32.8 142 47.2 38.3 123
NORTHEAST ENTRANCE 7350 .0 .0 * 19.4 15.5 125
PARKER PEAK 9400 36.2 19.8 183 35.5 22.4 158
SYLVAN LAKE 8420 19.8 15.1 131 35.4 27.6 128
THUMB DIVIDE 7980 9.4 1.4 671* 23.6 22.8 104
TWO OCEAN PLATEAU 9240 40.1 28.3 142 39.9 32.8 122
WHITE MILL 8700 35.0 22.3 157 35.0 28.9 121
WOLVERINE 7650 .5 .0 * 21.2 15.5 137
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Basin Index (%) 159 127
WIND RIVER
BURROUGHS CREEK 8750 -M 9.3 * -M 19.9 *
CASTLE CREEK 8400 .0 -M * 14.8 -M *
COLD SPRINGS 9630 .0 .0 * 15.7 14.4 109
DEER PARK 9700 14.8 10.5 141 24.3 25.9 94
HOBBS PARK 10100 14.7 13.1 112 18.4 19.4 95
KIRWIN 9550 17.1 8.4 204 22.1 15.9 139
LITTLE WARM 9370 7.8 2.7 289 20.2 17.4 116
OWL CREEK 8975 .0 .0 * 9.5 9.6 99
SOUTH PASS 9040 10.3 6.8 151 19.2 22.4 86
ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.5 94
TOGWOTEE PASS 9580 31.6 23.0 137 37.5 29.7 126
TOWNSEND CREEK 8700 .0 .0 * 14.6 17.1 85
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Basin Index (%) 149 105
BIGHORN BASIN
BALD MTN. 9380 31.5 19.2 164 25.4 22.1 115
BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.6 113
BONE SPRINGS DIV 9350 24.5 14.3 171 22.3 20.8 107
GRAVE SPRINGS 8550 7.9 2.6 304 15.5 15.0 103
KIRWIN 9550 17.1 8.4 204 22.1 15.9 139
MARQUETTE 8760 12.9 -M * 17.8 -M *
MIDDLE POWDER 7760 12.1 5.3 228 17.5 16.2 108
OWL CREEK 8975 .0 .0 * 9.5 9.6 99
POWDER RIVER PASS 9480 12.0 5.4 222 20.2 17.3 117
SHELL CREEK 9580 21.5 15.3 141 21.5 18.5 116
TIMBER CREEK 7950 .0 .0 * 13.5 12.2 111
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Basin Index (%) 180 113
SHOSHONE RIVER
BLACKWATER 9780 34.3 24.3 141 34.8 26.0 134
EVENING STAR 9200 37.9 23.7 160 46.6 33.3 140
MARQUETTE 8760 12.9 -M * 17.8 -M *
SYLVAN ROAD 7120 .0 .0 * 25.7 20.3 127
YOUNTS PEAK 8350 -M 11.8 * -M 19.5 *
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Basin Index (%) 150* 135
POWDER RIVER
BEAR TRAP MEADOW 8200 .0 .0 * 14.2 12.6 113
CLOUD PEAK RESERVOIR 9860 24.6 14.8 166 26.0 19.6 133
GRAVE SPRINGS 8550 7.9 2.6 304 15.5 15.0 103
HANSEN SAWMILL 8360 1.4 .0 * 16.2 12.9 126
MIDDLE POWDER 7760 12.1 5.3 228 17.5 16.2 108
POWDER RIVER PASS 9480 12.0 5.4 222 20.2 17.3 117
SOLDIER PARK 8720 7.7 -M * 16.5 -M *
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Basin Index (%) 206 117
TONGUE RIVER
BIG GOOSE 7990 10.5 4.8 219 20.1 17.2 117
BONE SPRINGS DIV 9350 24.5 14.3 171 22.3 20.8 107
BURGESS JUNCTION 7880 15.2 8.1 188 21.2 17.0 125
DOME LAKE 8880 16.0 6.2 258 21.0 19.0 111
LITTLE GOOSE 8870 13.2 -M * 23.2 -M *
SUCKER CREEK 8880 16.7 8.6 194 25.5 20.2 126
TIE CREEK 6870 1.3 .0 * 19.9 17.2 116
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Basin Index (%) 200 117
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.9 14.9 120
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Basin Index (%) * 120
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.8 16.6 125
NORTH RAPID CREEK 6130 .0 .0 * 20.1 14.5 139
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Basin Index (%) * 132
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.3 18.1 167 34.5 28.5 121
BLACKHALL MTN 9820 37.8 -M * 43.5 -M *
COLUMBINE 9160 20.5 3.0 683 41.6 30.6 136
DIVIDE PEAK 8880 8.2 5.7 144 29.7 26.5 112
JOE WRIGHT 10120 32.6 21.1 155 41.1 32.8 125
LAPRELE CREEK 8375 .2 .0 * 17.0 16.9 101
MED BOW 10500 -M -M * 48.4 -M *
NORTH FRENCH CREEK 10130 38.8 29.6 131 42.3 33.7 126
NEVER SUMMER 10280 27.7 20.3 136 25.8 -M *
OLD BATTLE 10000 39.1 32.5 120 43.7 42.1 104
RAWAH 9020 5.2 .4 1300* 23.1 18.9 122
SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84
SAND LAKE 10050 39.8 27.8 143 41.9 31.9 131
SOUTH BRUSH CREEK 8440 .0 .0 * 19.7 20.1 98
TOWER 10500 55.0 47.7 115 60.4 47.9 126
WEBBER SPRINGS 9250 18.4 12.0 153 35.8 32.1 112
WILLOW CREEK PASS 9540 13.5 9.3 145 19.3 17.3 112
ZIRKEL 9340 29.8 9.7 307 -M 33.4 *
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Basin Index (%) 151 117
SWEETWATER
DEER PARK 9700 14.8 10.5 141 24.3 25.9 94
LARSEN CREEK 9000 .0 3.6 0 17.9 -M *
SOUTH PASS 9040 10.3 6.8 151 19.2 22.4 86
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Basin Index (%) 120 90
LOWER N. PLATTE
CASPER MTN. 7900 12.0 4.5 267 21.1 20.4 103
LAPRELE CREEK 8375 .2 .0 * 17.0 16.9 101
RENO HILL 8400 17.2 3.6 478 28.2 21.4 132
WINDY PEAK 7900 .2 .0 * 16.8 14.9 113
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Basin Index (%) 365 113
LARAMIE RIVER
BROOKLYN LAKE 10240 28.8 16.4 176 37.9 27.2 139
CINNABAR PARK 9574 21.1 12.3 172 36.7 29.5 124
CROW CREEK 8330 .8 .0 * 17.7 15.1 117
DEADMAN HILL 10220 27.2 16.5 165 30.4 23.0 132
RAWAH 9020 5.2 .4 1300* 23.1 18.9 122
ROACH 9700 17.6 11.5 153 30.9 24.7 125
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Basin Index (%) 176 128
S. PLATTE
BLACK MOUNTAIN 8920 2.4 -M * 19.1 -M *
CROW CREEK 8330 .8 .0 * 17.7 15.1 117
DEADMAN HILL 10220 27.2 16.5 165 30.4 23.0 132
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Basin Index (%) 170* 126
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.6 108
DIVIDE PEAK 8880 8.2 5.7 144 29.7 26.5 112
ELK RIVER 8700 4.9 .0 * 26.9 24.6 109
LITTLE SNAKE RIVER 8915 -M 13.3 * -M 35.2 *
OLD BATTLE 10000 39.1 32.5 120 43.7 42.1 104
SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.4 84
SANDSTONE RS 8150 -M .0 * 20.9 22.5 93
WHISKEY PARK 8950 29.9 21.9 137 45.8 33.8 136
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Basin Index (%) 137* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.1 3.1 294 17.3 16.8 103
BLIND BULL SUM 8650 38.9 19.9 195 26.1 23.2 112
EAST RIM DIVIDE 7930 .0 .5 0* 17.8 14.1 126
ELKHART PARK G.S. 9400 13.9 5.7 244 20.3 16.7 122
GROS VENTRE SUMMIT 8750 9.5 5.6 170 16.8 16.1 104
GUNSIGHT PASS 9820 17.4 10.4 167 22.1 17.7 125
KENDALL R.S. 7740 6.1 .0 * 24.9 16.8 148
LOOMIS PARK 8240 12.1 2.6 465 27.7 20.5 135
NEW FORK LAKE 8340 2.5 .0 * 15.0 13.5 111
POCKET CREEK 9360 9.4 -M * 15.2 -M *
SNIDER BASIN 8060 .0 .4 0* 21.7 16.8 129
SPRING CREEK DIVIDE 9000 -M 20.3 * -M 28.0 *
TRIPLE PEAK 8500 22.2 8.4 264 41.3 30.2 137
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Basin Index (%) 233 124
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.7 -M *
BUCK PASTURE 9700 3.3 -M * 21.2 -M *
EF BLACKS FORK GS 9360 -M -M * 13.7 -M *
HAMS FORK 7840 .0 .0 * 16.8 14.4 117
HEWINTA 9519 .0 .0 * 18.4 17.7 104
HICKERSON PARK 9145 .1 .0 * 12.1 13.4 90
HOLE-IN-ROCK 9150 .0 .0 * 13.3 13.0 102
INDIAN CREEK 9425 26.0 18.5 141 30.7 27.0 114
KELLEY R.S. 8180 7.1 2.8 254 23.6 21.8 108
SPIRIT LK 10235 2.9 -M * 18.8 -M *
STEEL CREEK PARK 10200 18.8 14.7 128 21.1 21.0 100
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Basin Index (%) 144* 106
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 9.7 4.9 198 24.4 23.5 104
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 12.6 15.6 81 27.6 30.8 90
HAYDEN FORK 9212 .1 .0 * 25.1 25.8 97
KELLEY R.S. 8180 7.1 2.8 254 23.6 21.8 108
LILY LAKE 9156 .2 .0 * 18.7 21.3 88
MONTE CRISTO 8960 15.6 14.9 105 30.0 31.6 95
SALT RIVER SUMMIT 7760 2.1 .0 * 22.2 19.9 112
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Basin Index (%) 124* 98
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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.