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 28 , 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 .0 .0 * 30.3 25.3 120
BLACK BEAR 8170 -M 29.0 * -M 45.7 *
BLIND BULL SUM 8650 -M 15.0 * -M 24.0 *
COTTONWOOD CREEK 7670 10.3 .0 * 39.4 31.0 127
EAST RIM DIVIDE 7930 .0 .0 * 17.9 14.8 121
GRAND TARGHEE 9260 44.5 41.0 109 45.0 38.2 118
GRANITE CREEK 6770 .2 .0 * 28.3 23.7 119
GRASSY LAKE 7265 12.7 9.4 135 46.3 43.1 107
GROS VENTRE SUMMIT 8750 .7 .4 175* 17.2 16.8 102
GUNSIGHT PASS 9820 12.1 5.2 233 23.0 18.3 126
LEWIS LAKE DIVIDE 7850 20.3 15.7 129 47.1 42.2 112
PHILLIPS BENCH 8200 20.1 12.8 157 39.7 33.8 117
SALT RIVER SUMMIT 7760 .0 .0 * 22.2 20.5 108
SNAKE RIVER STATION 6920 .0 .0 * 30.3 27.3 111
SPRING CREEK DIVIDE 9000 25.9 14.3 181 36.8 28.8 128
THUMB DIVIDE 7980 .1 .0 * 23.7 23.5 101
TOGWOTEE PASS 9580 26.3 21.2 124 37.6 30.6 123
TWO OCEAN PLATEAU 9240 35.3 27.0 131 39.9 33.9 118
WILLOW CREEK 8380 15.0 7.5 200 47.3 42.0 113
YOUNTS PEAK 8350 -M 7.4 * -M 20.3 *
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Basin Index (%) 145* 116
MADISON-GALLATIN
BLACK BEAR 8170 -M 29.0 * -M 45.7 *
CANYON 7870 .0 .0 * 20.6 20.6 100
MADISON PLATEAU 7750 -M 9.8 * -M 32.6 *
WEST YELLOWSTONE 6700 .0 .0 * 19.6 18.1 108
WHISKEY CREEK 6800 .9 .3 300* 26.4 25.2 105
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Basin Index (%) 300* 104
YELLOWSTONE
BEARTOOTH LAKE 9360 28.9 19.4 149 34.9 24.9 140
BURNT MTN 5880 .0 .0 * 26.3 20.5 128
CANYON 7870 .0 .0 * 20.6 20.6 100
COLE CREEK 7850 20.8 12.0 173 22.6 20.8 109
EVENING STAR 9200 32.3 20.4 158 46.8 34.5 136
FISHER CREEK 9100 40.6 29.7 137 47.2 39.5 119
NORTHEAST ENTRANCE 7350 .0 .0 * 19.6 16.3 120
PARKER PEAK 9400 26.1 16.7 156 35.7 23.4 153
SYLVAN LAKE 8420 9.6 10.6 91 35.4 28.8 123
THUMB DIVIDE 7980 .1 .0 * 23.7 23.5 101
TWO OCEAN PLATEAU 9240 35.3 27.0 131 39.9 33.9 118
WHITE MILL 8700 27.5 19.5 141 35.2 29.9 118
WOLVERINE 7650 .0 .0 * 21.1 16.2 130
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Basin Index (%) 142 123
WIND RIVER
BURROUGHS CREEK 8750 -M 4.1 * -M 20.7 *
CASTLE CREEK 8400 .0 -M * 15.3 -M *
COLD SPRINGS 9630 .0 .0 * 17.0 15.1 113
DEER PARK 9700 7.0 6.3 111 24.8 26.8 93
HOBBS PARK 10100 8.7 8.8 99 19.0 20.1 95
KIRWIN 9550 9.2 4.3 214 22.9 16.6 138
LITTLE WARM 9370 .0 .0 * 20.3 18.1 112
OWL CREEK 8975 .0 .0 * 10.1 10.4 97
SOUTH PASS 9040 1.6 1.1 145* 19.3 23.3 83
ST. LAWRENCE ALT 8620 .0 .0 * 12.7 14.2 89
TOGWOTEE PASS 9580 26.3 21.2 124 37.6 30.6 123
TOWNSEND CREEK 8700 .0 .0 * 14.8 17.9 83
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Basin Index (%) 127* 103
BIGHORN BASIN
BALD MTN. 9380 25.0 15.8 158 25.7 23.1 111
BEAR TRAP MEADOW 8200 .0 .0 * 15.2 13.6 112
BONE SPRINGS DIV 9350 16.9 11.4 148 22.6 21.9 103
GRAVE SPRINGS 8550 .0 .0 * 16.2 15.9 102
KIRWIN 9550 9.2 4.3 214 22.9 16.6 138
MARQUETTE 8760 2.9 -M * 18.3 -M *
MIDDLE POWDER 7760 1.9 .0 * 19.0 17.1 111
OWL CREEK 8975 .0 .0 * 10.1 10.4 97
POWDER RIVER PASS 9480 5.7 .0 * 20.8 18.3 114
SHELL CREEK 9580 16.7 11.9 140 21.9 19.6 112
TIMBER CREEK 7950 .0 .0 * 14.3 13.1 109
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Basin Index (%) 174* 111
SHOSHONE RIVER
BLACKWATER 9780 26.7 22.3 120 35.0 27.0 130
EVENING STAR 9200 32.3 20.4 158 46.8 34.5 136
MARQUETTE 8760 2.9 -M * 18.3 -M *
SYLVAN ROAD 7120 .0 .0 * 25.6 21.0 122
YOUNTS PEAK 8350 -M 7.4 * -M 20.3 *
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Basin Index (%) 138* 130
POWDER RIVER
BEAR TRAP MEADOW 8200 .0 .0 * 15.2 13.6 112
CLOUD PEAK RESERVOIR 9860 18.0 9.4 191 26.9 20.8 129
GRAVE SPRINGS 8550 .0 .0 * 16.2 15.9 102
HANSEN SAWMILL 8360 .0 .0 * 17.2 13.8 125
MIDDLE POWDER 7760 1.9 .0 * 19.0 17.1 111
POWDER RIVER PASS 9480 5.7 .0 * 20.8 18.3 114
SOLDIER PARK 8720 .0 -M * 17.5 -M *
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Basin Index (%) 272* 116
TONGUE RIVER
BIG GOOSE 7990 4.1 .0 * 20.5 18.0 114
BONE SPRINGS DIV 9350 16.9 11.4 148 22.6 21.9 103
BURGESS JUNCTION 7880 7.7 2.2 350 21.7 17.8 122
DOME LAKE 8880 10.6 .0 * 22.6 20.0 113
LITTLE GOOSE 8870 6.3 -M * 23.6 -M *
SUCKER CREEK 8880 9.5 3.2 297 25.7 21.2 121
TIE CREEK 6870 .0 .0 * 19.8 18.3 108
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Basin Index (%) 290* 113
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 18.4 16.0 115
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Basin Index (%) * 115
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 21.1 17.9 118
NORTH RAPID CREEK 6130 .0 .0 * 20.8 15.5 134
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Basin Index (%) * 125
UPPER N. PLATTE
ARAPAHO RIDGE 10960 24.5 11.1 221 35.2 29.0 121
BLACKHALL MTN 9820 29.0 -M * 44.4 -M *
COLUMBINE 9160 13.3 .0 * 42.5 31.2 136
DIVIDE PEAK 8880 .0 .0 * 30.0 27.1 111
JOE WRIGHT 10120 28.5 16.4 174 43.0 33.9 127
LAPRELE CREEK 8375 .1 .0 * 17.9 17.6 102
MED BOW 10500 -M -M * 49.3 -M *
NORTH FRENCH CREEK 10130 33.1 24.0 138 44.2 34.7 127
NEVER SUMMER 10280 27.6 17.0 162 28.7 -M *
OLD BATTLE 10000 34.9 27.3 128 45.5 43.2 105
RAWAH 9020 .0 .0 * 25.8 19.3 134
SAGE CREEK BASIN 7850 .0 .0 * 14.8 17.7 84
SAND LAKE 10050 37.2 22.8 163 43.0 32.7 131
SOUTH BRUSH CREEK 8440 .0 .0 * 19.9 20.8 96
TOWER 10500 47.5 41.4 115 61.1 48.8 125
WEBBER SPRINGS 9250 12.3 2.7 456 37.3 32.7 114
WILLOW CREEK PASS 9540 7.1 3.0 237 21.2 18.1 117
ZIRKEL 9340 19.8 .0 * 49.0 33.8 145
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Basin Index (%) 173 120
SWEETWATER
DEER PARK 9700 7.0 6.3 111 24.8 26.8 93
LARSEN CREEK 9000 .0 1.2 0* 17.9 -M *
SOUTH PASS 9040 1.6 1.1 145* 19.3 23.3 83
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Basin Index (%) 100* 88
LOWER N. PLATTE
CASPER MTN. 7900 .8 .1 800* 21.7 21.4 101
LAPRELE CREEK 8375 .1 .0 * 17.9 17.6 102
RENO HILL 8400 8.3 .0 * 28.8 22.3 129
WINDY PEAK 7900 .0 .0 * 17.8 15.8 113
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Basin Index (%) 9200* 112
LARAMIE RIVER
BROOKLYN LAKE 10240 21.5 9.0 239 38.7 28.0 138
CINNABAR PARK 9574 18.4 4.6 400 37.6 30.0 125
CROW CREEK 8330 .0 .0 * 18.7 15.9 118
DEADMAN HILL 10220 20.7 11.0 188 31.6 23.7 133
RAWAH 9020 .0 .0 * 25.8 19.3 134
ROACH 9700 12.0 4.7 255 32.8 25.4 129
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Basin Index (%) 248 130
S. PLATTE
BLACK MOUNTAIN 8920 .1 -M * 20.3 -M *
CROW CREEK 8330 .0 .0 * 18.7 15.9 118
DEADMAN HILL 10220 20.7 11.0 188 31.6 23.7 133
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Basin Index (%) 188* 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.4 19.0 107
DIVIDE PEAK 8880 .0 .0 * 30.0 27.1 111
ELK RIVER 8700 .1 .0 * 28.2 25.2 112
LITTLE SNAKE RIVER 8915 -M 5.0 * -M 35.8 *
OLD BATTLE 10000 34.9 27.3 128 45.5 43.2 105
SAGE CREEK BASIN 7850 .0 .0 * 14.8 17.7 84
SANDSTONE RS 8150 -M .0 * 21.2 23.0 92
WHISKEY PARK 8950 20.0 11.7 171 47.1 34.5 137
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Basin Index (%) 141* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .0 * 17.0 17.6 97
BLIND BULL SUM 8650 -M 15.0 * -M 24.0 *
EAST RIM DIVIDE 7930 .0 .0 * 17.9 14.8 121
ELKHART PARK G.S. 9400 6.0 1.5 400 20.6 17.5 118
GROS VENTRE SUMMIT 8750 .7 .4 175* 17.2 16.8 102
GUNSIGHT PASS 9820 12.1 5.2 233 23.0 18.3 126
KENDALL R.S. 7740 .0 .0 * 25.3 17.4 145
LOOMIS PARK 8240 4.3 .0 * 27.8 21.2 131
NEW FORK LAKE 8340 -M .0 * 15.7 14.2 111
POCKET CREEK 9360 1.9 -M * 15.3 -M *
SNIDER BASIN 8060 .0 .0 * 23.0 17.3 133
SPRING CREEK DIVIDE 9000 25.9 14.3 181 36.8 28.8 128
TRIPLE PEAK 8500 12.7 .7 1814* 41.3 31.1 133
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Basin Index (%) 283* 124
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.8 -M *
BUCK PASTURE 9700 .0 -M * 21.5 -M *
EF BLACKS FORK GS 9360 .0 -M * 16.2 -M *
HAMS FORK 7840 .0 .0 * 16.9 15.0 113
HEWINTA 9519 .0 .0 * 18.7 18.3 102
HICKERSON PARK 9145 .0 .0 * 12.7 14.1 90
HOLE-IN-ROCK 9150 .0 .0 * 13.9 13.7 101
INDIAN CREEK 9425 17.8 13.0 137 31.1 27.7 112
KELLEY R.S. 8180 .0 .0 * 23.7 22.5 105
SPIRIT LK 10235 .0 -M * 19.1 -M *
STEEL CREEK PARK 10200 12.3 10.9 113 21.4 21.7 99
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Basin Index (%) 126* 104
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.7 -M *
BUG LAKE 7950 .3 .0 * 24.5 24.2 101
BURTS MILLER RANCH 8000 .0 -M * 8.9 -M *
CHALK CREEK #1 8993 3.9 8.8 44 27.7 31.7 87
HAYDEN FORK 9212 .0 .0 * 25.6 26.5 97
KELLEY R.S. 8180 .0 .0 * 23.7 22.5 105
LILY LAKE 9156 .0 .0 * 19.4 22.1 88
MONTE CRISTO 8960 6.5 7.1 92 30.9 32.4 95
SALT RIVER SUMMIT 7760 .0 .0 * 22.2 20.5 108
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Basin Index (%) 67* 97
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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.