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 THURSDAY: MAY 22 , 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 3.5 .0 * 30.3 24.7 123
BLACK BEAR 8170 42.3 32.7 129 48.6 44.9 108
BLIND BULL SUM 8650 38.9 18.8 207 26.1 23.4 112
COTTONWOOD CREEK 7670 17.5 4.4 398 39.6 30.2 131
EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.3 124
GRAND TARGHEE 9260 49.2 41.6 118 44.9 37.1 121
GRANITE CREEK 6770 7.1 .0 * 27.6 23.1 119
GRASSY LAKE 7265 23.5 15.4 153 46.4 42.1 110
GROS VENTRE SUMMIT 8750 7.5 4.2 179 16.8 16.3 103
GUNSIGHT PASS 9820 16.5 9.3 177 22.4 17.8 126
LEWIS LAKE DIVIDE 7850 31.1 21.0 148 46.9 41.2 114
PHILLIPS BENCH 8200 28.0 17.6 159 39.7 33.1 120
SALT RIVER SUMMIT 7760 .0 .0 * 22.3 20.1 111
SNAKE RIVER STATION 6920 .0 .0 * 30.4 26.7 114
SPRING CREEK DIVIDE 9000 32.1 19.0 169 36.5 28.3 129
THUMB DIVIDE 7980 6.6 .3 2200* 23.7 22.9 103
TOGWOTEE PASS 9580 30.1 22.8 132 37.6 29.9 126
TWO OCEAN PLATEAU 9240 39.8 28.0 142 39.9 33.2 120
WILLOW CREEK 8380 25.2 14.7 171 47.3 41.2 115
YOUNTS PEAK 8350 -M 11.1 * -M 19.8 *
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Basin Index (%) 160 117
MADISON-GALLATIN
BLACK BEAR 8170 42.3 32.7 129 48.6 44.9 108
CANYON 7870 5.7 1.1 518* 20.3 20.0 102
MADISON PLATEAU 7750 19.2 13.3 144 30.8 31.8 97
WEST YELLOWSTONE 6700 .0 .0 * 19.6 17.7 111
WHISKEY CREEK 6800 8.7 4.3 202 26.0 24.5 106
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Basin Index (%) 148 105
YELLOWSTONE
BEARTOOTH LAKE 9360 32.0 21.1 152 34.9 24.3 144
BURNT MTN 5880 .0 .0 * 26.0 19.4 134
CANYON 7870 5.7 1.1 518* 20.3 20.0 102
COLE CREEK 7850 25.2 15.2 166 22.7 19.7 115
EVENING STAR 9200 37.2 23.0 162 46.7 33.6 139
FISHER CREEK 9100 45.0 32.2 140 47.2 38.6 122
NORTHEAST ENTRANCE 7350 .0 .0 * 19.5 15.7 124
PARKER PEAK 9400 34.5 19.4 178 35.6 22.6 158
SYLVAN LAKE 8420 17.8 14.2 125 35.4 27.9 127
THUMB DIVIDE 7980 6.6 .3 2200* 23.7 22.9 103
TWO OCEAN PLATEAU 9240 39.8 28.0 142 39.9 33.2 120
WHITE MILL 8700 34.0 21.6 157 35.1 29.2 120
WOLVERINE 7650 2.4 .0 * 21.2 15.7 135
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Basin Index (%) 159 126
WIND RIVER
BURROUGHS CREEK 8750 -M 8.0 * -M 20.1 *
CASTLE CREEK 8400 .0 -M * 15.0 -M *
COLD SPRINGS 9630 .0 .0 * 15.9 14.5 110
DEER PARK 9700 13.5 9.5 142 24.3 26.1 93
HOBBS PARK 10100 14.1 12.2 116 18.4 19.5 94
KIRWIN 9550 16.3 7.5 217 22.6 16.1 140
LITTLE WARM 9370 6.7 1.5 447 20.2 17.5 115
OWL CREEK 8975 .0 .0 * 9.7 9.8 99
SOUTH PASS 9040 8.8 4.9 180 19.2 22.6 85
ST. LAWRENCE ALT 8620 .0 .0 * 12.7 13.6 93
TOGWOTEE PASS 9580 30.1 22.8 132 37.6 29.9 126
TOWNSEND CREEK 8700 .0 .0 * 14.8 17.2 86
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Basin Index (%) 153 105
BIGHORN BASIN
BALD MTN. 9380 30.7 18.4 167 25.5 22.2 115
BEAR TRAP MEADOW 8200 .0 .0 * 14.5 12.8 113
BONE SPRINGS DIV 9350 23.4 13.7 171 22.4 21.1 106
GRAVE SPRINGS 8550 6.3 .9 700* 15.8 15.1 105
KIRWIN 9550 16.3 7.5 217 22.6 16.1 140
MARQUETTE 8760 11.4 -M * 18.1 -M *
MIDDLE POWDER 7760 9.9 3.5 283 17.6 16.4 107
OWL CREEK 8975 .0 .0 * 9.7 9.8 99
POWDER RIVER PASS 9480 11.1 4.0 278 20.5 17.5 117
SHELL CREEK 9580 21.1 14.6 145 21.6 18.7 116
TIMBER CREEK 7950 .0 .0 * 14.1 12.4 114
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Basin Index (%) 190 114
SHOSHONE RIVER
BLACKWATER 9780 30.9 23.8 130 34.9 26.2 133
EVENING STAR 9200 37.2 23.0 162 46.7 33.6 139
MARQUETTE 8760 11.4 -M * 18.1 -M *
SYLVAN ROAD 7120 .0 .0 * 25.7 20.4 126
YOUNTS PEAK 8350 -M 11.1 * -M 19.8 *
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Basin Index (%) 146* 134
POWDER RIVER
BEAR TRAP MEADOW 8200 .0 .0 * 14.5 12.8 113
CLOUD PEAK RESERVOIR 9860 24.6 13.8 178 26.6 19.8 134
GRAVE SPRINGS 8550 6.3 .9 700* 15.8 15.1 105
HANSEN SAWMILL 8360 .0 .0 * 17.0 13.1 130
MIDDLE POWDER 7760 9.9 3.5 283 17.6 16.4 107
POWDER RIVER PASS 9480 11.1 4.0 278 20.5 17.5 117
SOLDIER PARK 8720 7.0 -M * 17.3 -M *
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Basin Index (%) 234* 118
TONGUE RIVER
BIG GOOSE 7990 9.5 2.9 328 20.2 17.3 117
BONE SPRINGS DIV 9350 23.4 13.7 171 22.4 21.1 106
BURGESS JUNCTION 7880 13.8 6.9 200 21.2 17.2 123
DOME LAKE 8880 15.4 4.7 328 21.4 19.2 111
LITTLE GOOSE 8870 12.2 -M * 23.5 -M *
SUCKER CREEK 8880 15.3 7.6 201 25.6 20.5 125
TIE CREEK 6870 .0 .0 * 19.9 17.4 114
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Basin Index (%) 216 116
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.9 15.0 119
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Basin Index (%) * 119
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.9 17.0 123
NORTH RAPID CREEK 6130 .0 .0 * 20.2 14.7 137
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Basin Index (%) * 130
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.0 16.5 176 34.5 28.5 121
BLACKHALL MTN 9820 36.2 -M * 43.7 -M *
COLUMBINE 9160 19.2 .6 3200* 41.6 30.7 136
DIVIDE PEAK 8880 4.7 3.9 121 29.7 26.6 112
JOE WRIGHT 10120 31.9 20.2 158 41.2 33.0 125
LAPRELE CREEK 8375 .0 .0 * 17.6 17.0 104
MED BOW 10500 -M -M * 48.4 -M *
NORTH FRENCH CREEK 10130 37.4 28.2 133 42.3 33.9 125
NEVER SUMMER 10280 -M 19.2 * -M -M *
OLD BATTLE 10000 37.8 31.8 119 43.7 42.3 103
RAWAH 9020 3.1 .3 1033* 23.2 18.9 123
SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.5 83
SAND LAKE 10050 38.9 27.0 144 41.9 32.1 131
SOUTH BRUSH CREEK 8440 .0 .0 * 19.8 20.3 98
TOWER 10500 53.3 46.9 114 60.4 48.1 126
WEBBER SPRINGS 9250 16.5 9.9 167 35.8 32.2 111
WILLOW CREEK PASS 9540 11.5 8.2 140 19.3 17.5 110
ZIRKEL 9340 26.6 6.5 409 -M 33.4 *
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Basin Index (%) 155 117
SWEETWATER
DEER PARK 9700 13.5 9.5 142 24.3 26.1 93
LARSEN CREEK 9000 .0 3.0 0 17.8 -M *
SOUTH PASS 9040 8.8 4.9 180 19.2 22.6 85
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Basin Index (%) 128 89
LOWER N. PLATTE
CASPER MTN. 7900 9.7 2.9 334 21.2 20.6 103
LAPRELE CREEK 8375 .0 .0 * 17.6 17.0 104
RENO HILL 8400 15.5 1.7 912 28.5 21.6 132
WINDY PEAK 7900 .2 .0 * 17.1 15.0 114
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Basin Index (%) 552 114
LARAMIE RIVER
BROOKLYN LAKE 10240 -M 14.6 * -M 27.4 *
CINNABAR PARK 9574 21.4 10.5 204 36.7 29.6 124
CROW CREEK 8330 .4 .0 * 17.7 15.2 116
DEADMAN HILL 10220 24.9 15.3 163 30.4 23.2 131
RAWAH 9020 3.1 .3 1033* 23.2 18.9 123
ROACH 9700 15.9 10.0 159 30.9 24.8 125
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Basin Index (%) 182 124
S. PLATTE
BLACK MOUNTAIN 8920 .5 -M * 19.1 -M *
CROW CREEK 8330 .4 .0 * 17.7 15.2 116
DEADMAN HILL 10220 24.9 15.3 163 30.4 23.2 131
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Basin Index (%) 165* 125
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 20.1 18.7 107
DIVIDE PEAK 8880 4.7 3.9 121 29.7 26.6 112
ELK RIVER 8700 2.0 .0 * 26.9 24.7 109
LITTLE SNAKE RIVER 8915 11.4 11.0 104 40.0 35.2 114
OLD BATTLE 10000 37.8 31.8 119 43.7 42.3 103
SAGE CREEK BASIN 7850 .0 .0 * 14.6 17.5 83
SANDSTONE RS 8150 -M .0 * 21.0 22.6 93
WHISKEY PARK 8950 29.5 20.0 148 46.3 34.0 136
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Basin Index (%) 128 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 7.5 1.1 682* 17.2 17.0 101
BLIND BULL SUM 8650 38.9 18.8 207 26.1 23.4 112
EAST RIM DIVIDE 7930 .0 .0 * 17.8 14.3 124
ELKHART PARK G.S. 9400 12.4 4.7 264 20.3 17.0 119
GROS VENTRE SUMMIT 8750 7.5 4.2 179 16.8 16.3 103
GUNSIGHT PASS 9820 16.5 9.3 177 22.4 17.8 126
KENDALL R.S. 7740 4.0 .0 * 25.0 16.9 148
LOOMIS PARK 8240 10.5 1.0 1050* 27.7 20.7 134
NEW FORK LAKE 8340 .6 .0 * 15.1 13.7 110
POCKET CREEK 9360 8.0 -M * 15.2 -M *
SNIDER BASIN 8060 .0 .0 * 21.7 16.9 128
SPRING CREEK DIVIDE 9000 32.1 19.0 169 36.5 28.3 129
TRIPLE PEAK 8500 20.1 6.4 314 41.3 30.4 136
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Basin Index (%) 233* 124
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.7 -M *
BUCK PASTURE 9700 .8 -M * 21.2 -M *
EF BLACKS FORK GS 9360 -M -M * 13.9 -M *
HAMS FORK 7840 .0 .0 * 16.8 14.6 115
HEWINTA 9519 .0 .0 * 18.3 17.9 102
HICKERSON PARK 9145 .0 .0 * 12.1 13.6 89
HOLE-IN-ROCK 9150 .0 .0 * 13.3 13.2 101
INDIAN CREEK 9425 24.3 17.0 143 30.7 27.2 113
KELLEY R.S. 8180 4.8 1.2 400* 23.6 22.0 107
SPIRIT LK 10235 .8 -M * 18.8 -M *
STEEL CREEK PARK 10200 17.2 13.7 126 21.0 21.2 99
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Basin Index (%) 145* 105
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 15.3 -M *
BUG LAKE 7950 7.6 2.5 304 24.4 23.7 103
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 10.8 13.7 79 27.5 31.1 88
HAYDEN FORK 9212 .1 .0 * 25.1 26.0 97
KELLEY R.S. 8180 4.8 1.2 400* 23.6 22.0 107
LILY LAKE 9156 .0 .0 * 18.6 21.5 87
MONTE CRISTO 8960 13.9 12.9 108 30.0 31.8 94
SALT RIVER SUMMIT 7760 .0 .0 * 22.3 20.1 111
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Basin Index (%) 123* 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.