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 SUNDAY: MAY 11 , 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 13.0 3.9 333 30.2 23.7 127
BLACK BEAR 8170 45.8 36.8 124 48.1 43.2 111
BLIND BULL SUM 8650 37.8 22.4 169 25.8 22.3 116
COTTONWOOD CREEK 7670 24.1 12.5 193 38.7 29.0 133
EAST RIM DIVIDE 7930 4.5 5.7 79 17.3 13.6 127
GRAND TARGHEE 9260 53.5 46.3 116 44.6 36.1 124
GRANITE CREEK 6770 14.9 4.7 317 27.4 22.2 123
GRASSY LAKE 7265 34.7 25.3 137 46.5 40.7 114
GROS VENTRE SUMMIT 8750 13.4 9.5 141 16.9 15.5 109
GUNSIGHT PASS 9820 19.9 12.2 163 21.9 17.1 128
LEWIS LAKE DIVIDE 7850 41.5 29.0 143 46.7 39.9 117
PHILLIPS BENCH 8200 35.5 23.0 154 39.4 32.0 123
SALT RIVER SUMMIT 7760 8.4 3.9 215 22.0 19.2 115
SNAKE RIVER STATION 6920 8.9 1.8 494 30.4 25.7 118
SPRING CREEK DIVIDE 9000 36.1 23.5 154 35.8 27.2 132
THUMB DIVIDE 7980 15.9 7.9 201 23.3 21.9 106
TOGWOTEE PASS 9580 34.7 25.4 137 37.4 28.7 130
TWO OCEAN PLATEAU 9240 40.6 29.5 138 39.6 31.7 125
WILLOW CREEK 8380 34.3 20.8 165 46.7 39.4 119
YOUNTS PEAK 8350 -M 15.3 * -M 18.6 *
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Basin Index (%) 150 121
MADISON-GALLATIN
BLACK BEAR 8170 45.8 36.8 124 48.1 43.2 111
CANYON 7870 12.8 7.1 180 20.2 19.0 106
MADISON PLATEAU 7750 26.2 19.6 134 30.7 30.1 102
WEST YELLOWSTONE 6700 .1 .0 * 19.5 16.7 117
WHISKEY CREEK 6800 15.4 10.3 150 26.0 23.2 112
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Basin Index (%) 136 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.3 23.0 149 34.5 23.2 149
BURNT MTN 5880 .8 .0 * 25.1 17.8 141
CANYON 7870 12.8 7.1 180 20.2 19.0 106
COLE CREEK 7850 26.3 17.2 153 22.1 18.3 121
EVENING STAR 9200 41.7 25.5 164 46.2 32.0 144
FISHER CREEK 9100 48.9 34.4 142 46.6 36.8 127
NORTHEAST ENTRANCE 7350 6.3 .8 788* 19.3 14.7 131
PARKER PEAK 9400 38.3 22.1 173 35.1 21.3 165
SYLVAN LAKE 8420 24.0 18.0 133 35.1 26.5 132
THUMB DIVIDE 7980 15.9 7.9 201 23.3 21.9 106
TWO OCEAN PLATEAU 9240 40.6 29.5 138 39.6 31.7 125
WHITE MILL 8700 36.9 24.8 149 34.7 27.7 125
WOLVERINE 7650 8.0 .0 * 20.9 14.7 142
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Basin Index (%) 159 132
WIND RIVER
BURROUGHS CREEK 8750 -M 11.5 * -M 19.0 *
CASTLE CREEK 8400 .6 -M * 14.5 -M *
COLD SPRINGS 9630 2.2 1.2 183 15.0 13.6 110
DEER PARK 9700 -M 14.4 * 22.6 24.9 91
HOBBS PARK 10100 14.7 15.8 93 16.6 18.0 92
KIRWIN 9550 19.7 10.9 181 21.3 15.0 142
LITTLE WARM 9370 11.2 6.6 170 19.8 16.4 121
OWL CREEK 8975 .1 .5 20* 9.1 8.8 103
SOUTH PASS 9040 12.0 11.4 105 17.3 21.5 80
ST. LAWRENCE ALT 8620 .2 .8 25 11.5 12.6 91
TOGWOTEE PASS 9580 34.7 25.4 137 37.4 28.7 130
TOWNSEND CREEK 8700 1.3 3.4 38 12.1 16.0 76
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Basin Index (%) 126 104
BIGHORN BASIN
BALD MTN. 9380 31.0 20.7 150 24.8 21.2 117
BEAR TRAP MEADOW 8200 2.5 .0 * 13.3 11.8 113
BONE SPRINGS DIV 9350 25.6 16.6 154 21.4 19.9 108
GRAVE SPRINGS 8550 10.0 7.5 133 14.6 14.4 101
KIRWIN 9550 19.7 10.9 181 21.3 15.0 142
MARQUETTE 8760 15.4 -M * 17.3 -M *
MIDDLE POWDER 7760 15.5 10.5 148 16.9 15.5 109
OWL CREEK 8975 .1 .5 20* 9.1 8.8 103
POWDER RIVER PASS 9480 13.0 9.0 144 19.6 16.4 120
SHELL CREEK 9580 21.2 16.8 126 20.7 17.7 117
TIMBER CREEK 7950 1.7 1.3 131 13.3 11.2 119
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Basin Index (%) 150 115
SHOSHONE RIVER
BLACKWATER 9780 36.1 24.6 147 34.4 24.7 139
EVENING STAR 9200 41.7 25.5 164 46.2 32.0 144
MARQUETTE 8760 15.4 -M * 17.3 -M *
SYLVAN ROAD 7120 .0 1.2 0 25.7 19.4 132
YOUNTS PEAK 8350 -M 15.3 * -M 18.6 *
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Basin Index (%) 152 140
POWDER RIVER
BEAR TRAP MEADOW 8200 2.5 .0 * 13.3 11.8 113
CLOUD PEAK RESERVOIR 9860 24.0 16.8 143 24.6 18.4 134
GRAVE SPRINGS 8550 10.0 7.5 133 14.6 14.4 101
HANSEN SAWMILL 8360 4.7 1.0 470 15.8 12.0 132
MIDDLE POWDER 7760 15.5 10.5 148 16.9 15.5 109
POWDER RIVER PASS 9480 13.0 9.0 144 19.6 16.4 120
SOLDIER PARK 8720 9.4 -M * 15.8 -M *
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Basin Index (%) 156 118
TONGUE RIVER
BIG GOOSE 7990 11.3 10.3 110 19.0 16.0 119
BONE SPRINGS DIV 9350 25.6 16.6 154 21.4 19.9 108
BURGESS JUNCTION 7880 17.4 11.4 153 20.2 16.2 125
DOME LAKE 8880 16.7 11.1 150 19.9 18.1 110
LITTLE GOOSE 8870 13.9 -M * 22.1 -M *
SUCKER CREEK 8880 18.0 12.7 142 24.5 19.2 128
TIE CREEK 6870 4.9 1.2 408 19.2 16.2 119
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Basin Index (%) 148 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 17.2 13.8 125
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Basin Index (%) * 125
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.4 15.7 130
NORTH RAPID CREEK 6130 .0 .0 * 19.3 13.8 140
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Basin Index (%) * 135
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.2 22.3 126 31.8 27.6 115
BLACKHALL MTN 9820 36.8 -M * -M -M *
COLUMBINE 9160 25.7 11.9 216 -M 29.7 *
DIVIDE PEAK 8880 10.1 13.7 74 26.9 25.6 105
JOE WRIGHT 10120 28.8 23.2 124 38.6 31.5 123
LAPRELE CREEK 8375 .8 2.0 40 14.7 16.2 91
MED BOW 10500 -M -M * 46.7 -M *
NORTH FRENCH CREEK 10130 39.0 32.7 119 40.8 32.5 126
NEVER SUMMER 10280 28.4 22.2 128 24.7 -M *
OLD BATTLE 10000 36.8 36.9 100 41.4 40.9 101
RAWAH 9020 6.5 2.4 271 21.4 18.4 116
SAGE CREEK BASIN 7850 .4 .0 * 14.3 16.9 85
SAND LAKE 10050 36.9 31.7 116 38.3 30.7 125
SOUTH BRUSH CREEK 8440 2.0 4.4 45 18.9 19.1 99
TOWER 10500 54.3 51.2 106 57.5 46.6 123
WEBBER SPRINGS 9250 18.1 19.0 95 33.0 31.2 106
WILLOW CREEK PASS 9540 14.8 13.0 114 18.0 16.5 109
ZIRKEL 9340 31.6 19.3 164 -M 32.8 *
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Basin Index (%) 118 112
SWEETWATER
DEER PARK 9700 -M 14.4 * 22.6 24.9 91
LARSEN CREEK 9000 3.5 6.2 56 17.6 -M *
SOUTH PASS 9040 12.0 11.4 105 17.3 21.5 80
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Basin Index (%) 88 86
LOWER N. PLATTE
CASPER MTN. 7900 11.8 11.1 106 19.0 19.6 97
LAPRELE CREEK 8375 .8 2.0 40 14.7 16.2 91
RENO HILL 8400 16.6 10.0 166 25.4 20.4 125
WINDY PEAK 7900 1.0 .0 * 15.1 13.9 109
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Basin Index (%) 131 106
LARAMIE RIVER
BROOKLYN LAKE 10240 28.9 21.1 137 34.8 26.1 133
CINNABAR PARK 9574 21.9 17.0 129 33.6 28.4 118
CROW CREEK 8330 .0 .0 * 15.5 14.4 108
DEADMAN HILL 10220 27.2 18.5 147 28.6 21.8 131
RAWAH 9020 6.5 2.4 271 21.4 18.4 116
ROACH 9700 17.4 15.5 112 28.3 23.4 121
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Basin Index (%) 137 122
S. PLATTE
BLACK MOUNTAIN 8920 5.7 -M * -M -M *
CROW CREEK 8330 .0 .0 * 15.5 14.4 108
DEADMAN HILL 10220 27.2 18.5 147 28.6 21.8 131
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Basin Index (%) 147* 122
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .1 .0 * 19.8 18.0 110
DIVIDE PEAK 8880 10.1 13.7 74 26.9 25.6 105
ELK RIVER 8700 10.0 7.0 143 26.1 23.8 110
LITTLE SNAKE RIVER 8915 -M 20.1 * -M 34.4 *
OLD BATTLE 10000 36.8 36.9 100 41.4 40.9 101
SAGE CREEK BASIN 7850 .4 .0 * 14.3 16.9 85
SANDSTONE RS 8150 .0 1.3 0* 19.8 21.9 90
WHISKEY PARK 8950 39.3 26.5 148 44.7 33.0 135
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Basin Index (%) 113 107
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.6 8.6 147 17.1 16.2 106
BLIND BULL SUM 8650 37.8 22.4 169 25.8 22.3 116
EAST RIM DIVIDE 7930 4.5 5.7 79 17.3 13.6 127
ELKHART PARK G.S. 9400 17.2 9.5 181 19.8 16.0 124
GROS VENTRE SUMMIT 8750 13.4 9.5 141 16.9 15.5 109
GUNSIGHT PASS 9820 19.9 12.2 163 21.9 17.1 128
KENDALL R.S. 7740 12.2 .0 * 24.8 16.2 153
LOOMIS PARK 8240 17.0 7.0 243 27.3 19.9 137
NEW FORK LAKE 8340 8.6 2.4 358 14.5 12.9 112
POCKET CREEK 9360 12.6 -M * 14.9 -M *
SNIDER BASIN 8060 4.3 7.2 60 20.9 16.3 128
SPRING CREEK DIVIDE 9000 36.1 23.5 154 35.8 27.2 132
TRIPLE PEAK 8500 27.9 14.5 192 40.6 29.2 139
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Basin Index (%) 173 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 16.0 -M *
BUCK PASTURE 9700 8.7 -M * 20.7 -M *
EF BLACKS FORK GS 9360 1.0 -M * 12.2 -M *
HAMS FORK 7840 1.6 .2 800* 16.2 13.9 117
HEWINTA 9519 .1 1.5 7 17.4 17.2 101
HICKERSON PARK 9145 .6 .0 * 10.2 12.9 79
HOLE-IN-ROCK 9150 .0 .0 * 11.5 12.4 93
INDIAN CREEK 9425 30.3 21.1 144 29.9 26.2 114
KELLEY R.S. 8180 12.1 8.1 149 23.0 21.2 108
SPIRIT LK 10235 3.4 -M * 16.2 -M *
STEEL CREEK PARK 10200 20.1 17.6 114 19.7 20.3 97
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Basin Index (%) 134* 103
UPPER BEAR RIVER
BEAR RIVER RS 8777 .1 -M * 15.1 -M *
BUG LAKE 7950 16.1 12.0 134 24.4 22.7 107
BURTS MILLER RANCH 8000 .3 -M * 8.5 -M *
CHALK CREEK #1 8993 17.5 21.2 83 27.4 29.9 92
HAYDEN FORK 9212 4.2 5.4 78 25.1 25.0 100
KELLEY R.S. 8180 12.1 8.1 149 23.0 21.2 108
LILY LAKE 9156 6.4 4.5 142 18.5 20.7 89
MONTE CRISTO 8960 20.8 21.0 99 29.5 30.8 96
SALT RIVER SUMMIT 7760 8.4 3.9 215 22.0 19.2 115
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Basin Index (%) 112 100
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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.