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 MONDAY: APRIL 21 , 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 20.1 11.7 172 27.3 21.8 125
BLACK BEAR 8170 43.5 36.9 118 41.7 40.0 104
BLIND BULL SUM 8650 37.4 24.1 155 23.7 20.3 117
COTTONWOOD CREEK 7670 27.1 18.3 148 35.2 26.0 135
EAST RIM DIVIDE 7930 14.3 9.4 152 16.0 12.3 130
GRAND TARGHEE 9260 52.5 42.2 124 -M 32.8 *
GRANITE CREEK 6770 21.1 10.5 201 24.7 20.4 121
GRASSY LAKE 7265 40.7 31.1 131 41.5 37.6 110
GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.8 109
GUNSIGHT PASS 9820 21.3 13.7 155 19.4 15.0 129
LEWIS LAKE DIVIDE 7850 41.2 30.5 135 41.7 37.0 113
PHILLIPS BENCH 8200 34.3 25.4 135 35.3 29.3 120
SALT RIVER SUMMIT 7760 14.8 9.4 157 19.5 17.4 112
SNAKE RIVER STATION 6920 17.4 11.1 157 27.0 23.6 114
SPRING CREEK DIVIDE 9000 37.4 23.5 159 33.5 24.9 135
THUMB DIVIDE 7980 20.8 14.4 144 20.3 19.8 103
TOGWOTEE PASS 9580 33.4 24.0 139 34.2 25.8 133
TWO OCEAN PLATEAU 9240 40.2 28.3 142 35.1 28.7 122
WILLOW CREEK 8380 41.5 26.7 155 42.4 35.4 120
YOUNTS PEAK 8350 -M 15.2 * -M 16.7 *
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Basin Index (%) 142 119
MADISON-GALLATIN
BLACK BEAR 8170 43.5 36.9 118 41.7 40.0 104
CANYON 7870 15.6 12.2 128 17.8 17.1 104
MADISON PLATEAU 7750 25.3 22.9 110 26.2 27.6 95
WEST YELLOWSTONE 6700 9.0 7.0 129 17.0 15.2 112
WHISKEY CREEK 6800 17.4 15.4 113 22.3 21.3 105
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Basin Index (%) 117 103
YELLOWSTONE
BEARTOOTH LAKE 9360 33.1 23.5 141 31.4 20.8 151
BURNT MTN 5880 8.7 .0 * 21.2 14.4 147
CANYON 7870 15.6 12.2 128 17.8 17.1 104
COLE CREEK 7850 24.9 16.4 152 18.3 14.6 125
EVENING STAR 9200 40.5 24.7 164 42.4 28.9 147
FISHER CREEK 9100 46.1 32.6 141 41.6 33.5 124
NORTHEAST ENTRANCE 7350 13.8 6.4 216 16.6 13.0 128
PARKER PEAK 9400 34.4 21.1 163 31.0 18.8 165
SYLVAN LAKE 8420 23.2 20.4 114 30.4 23.7 128
THUMB DIVIDE 7980 20.8 14.4 144 20.3 19.8 103
TWO OCEAN PLATEAU 9240 40.2 28.3 142 35.1 28.7 122
WHITE MILL 8700 34.3 23.7 145 30.5 25.0 122
WOLVERINE 7650 15.6 6.9 226 18.2 12.9 141
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Basin Index (%) 152 131
WIND RIVER
BURROUGHS CREEK 8750 -M 13.2 * -M 16.8 *
CASTLE CREEK 8400 8.5 -M * 13.0 -M *
COLD SPRINGS 9630 8.8 4.3 205 13.4 11.0 122
DEER PARK 9700 -M 16.3 * 20.3 21.7 94
HOBBS PARK 10100 16.0 14.9 107 14.9 14.9 100
KIRWIN 9550 -M 10.0 * 19.3 12.5 154
LITTLE WARM 9370 14.3 10.0 143 17.8 14.0 127
OWL CREEK 8975 5.6 3.7 151 8.5 6.9 123
SOUTH PASS 9040 15.1 15.4 98 15.9 18.7 85
ST. LAWRENCE ALT 8620 1.0 5.2 19 9.1 10.0 91
TOGWOTEE PASS 9580 33.4 24.0 139 34.2 25.8 133
TOWNSEND CREEK 8700 7.4 9.3 80 10.3 13.4 77
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Basin Index (%) 117 110
BIGHORN BASIN
BALD MTN. 9380 27.8 19.9 140 22.2 18.4 121
BEAR TRAP MEADOW 8200 10.3 2.9 355 12.6 9.5 133
BONE SPRINGS DIV 9350 23.8 16.1 148 18.8 16.8 112
GRAVE SPRINGS 8550 13.3 9.5 140 14.0 11.8 119
KIRWIN 9550 -M 10.0 * 19.3 12.5 154
MARQUETTE 8760 15.1 -M * 14.2 -M *
MIDDLE POWDER 7760 19.3 12.4 156 15.8 12.9 122
OWL CREEK 8975 5.6 3.7 151 8.5 6.9 123
POWDER RIVER PASS 9480 15.8 10.2 155 18.1 13.8 131
SHELL CREEK 9580 20.8 15.4 135 18.4 14.9 123
TIMBER CREEK 7950 5.9 4.6 128 10.4 8.5 122
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Basin Index (%) 151 125
SHOSHONE RIVER
BLACKWATER 9780 34.3 23.8 144 31.3 21.9 143
EVENING STAR 9200 40.5 24.7 164 42.4 28.9 147
MARQUETTE 8760 15.1 -M * 14.2 -M *
SYLVAN ROAD 7120 11.1 9.5 117 22.9 17.7 129
YOUNTS PEAK 8350 -M 15.2 * -M 16.7 *
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Basin Index (%) 148 141
POWDER RIVER
BEAR TRAP MEADOW 8200 10.3 2.9 355 12.6 9.5 133
CLOUD PEAK RESERVOIR 9860 22.8 15.9 143 20.7 15.0 138
GRAVE SPRINGS 8550 13.3 9.5 140 14.0 11.8 119
HANSEN SAWMILL 8360 10.1 4.6 220 13.8 9.7 142
MIDDLE POWDER 7760 19.3 12.4 156 15.8 12.9 122
POWDER RIVER PASS 9480 15.8 10.2 155 18.1 13.8 131
SOLDIER PARK 8720 13.6 -M * 13.5 -M *
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Basin Index (%) 165 131
TONGUE RIVER
BIG GOOSE 7990 13.7 9.2 149 17.0 12.8 133
BONE SPRINGS DIV 9350 23.8 16.1 148 18.8 16.8 112
BURGESS JUNCTION 7880 17.7 12.6 140 17.9 13.6 132
DOME LAKE 8880 17.5 11.8 148 17.2 15.0 115
LITTLE GOOSE 8870 15.8 -M * 19.3 -M *
SUCKER CREEK 8880 19.1 12.7 150 21.7 15.9 136
TIE CREEK 6870 8.6 4.2 205 16.8 13.0 129
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Basin Index (%) 151 126
BELLE FOURCHE
COLE CANYON 5910 6.4 1.8 356 14.7 10.5 140
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Basin Index (%) 356 140
CHEYENNE RIVER BASIN
BLIND PARK 6890 5.8 4.0 145 17.3 13.2 131
NORTH RAPID CREEK 6130 5.5 4.0 138 16.1 11.2 144
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Basin Index (%) 141 137
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.2 21.3 132 29.4 24.4 120
BLACKHALL MTN 9820 39.3 -M * -M -M *
COLUMBINE 9160 34.1 20.6 166 -M 27.0 *
DIVIDE PEAK 8880 18.9 18.6 102 24.8 22.9 108
JOE WRIGHT 10120 25.4 22.4 113 34.0 27.9 122
LAPRELE CREEK 8375 7.9 7.8 101 12.5 13.8 91
MED BOW 10500 -M -M * 42.1 -M *
NORTH FRENCH CREEK 10130 38.4 32.0 120 37.0 28.7 129
NEVER SUMMER 10280 27.1 20.7 131 21.7 -M *
OLD BATTLE 10000 35.8 32.9 109 39.1 37.2 105
RAWAH 9020 11.0 8.3 133 18.8 15.6 121
SAGE CREEK BASIN 7850 8.4 5.4 156 13.6 15.3 89
SAND LAKE 10050 36.0 30.6 118 34.8 27.0 129
SOUTH BRUSH CREEK 8440 9.0 9.7 93 16.3 16.6 98
TOWER 10500 53.9 48.2 112 -M 42.3 *
WEBBER SPRINGS 9250 28.1 21.8 129 30.3 28.5 106
WILLOW CREEK PASS 9540 16.7 13.3 126 16.6 14.5 114
ZIRKEL 9340 40.8 22.6 181 -M 29.8 *
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Basin Index (%) 125 113
SWEETWATER
DEER PARK 9700 -M 16.3 * 20.3 21.7 94
LARSEN CREEK 9000 10.6 10.2 104 16.2 -M *
SOUTH PASS 9040 15.1 15.4 98 15.9 18.7 85
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Basin Index (%) 100 90
LOWER N. PLATTE
CASPER MTN. 7900 18.3 14.4 127 17.2 16.7 103
LAPRELE CREEK 8375 7.9 7.8 101 12.5 13.8 91
RENO HILL 8400 19.2 14.0 137 22.6 17.3 131
WINDY PEAK 7900 8.0 6.5 123 13.4 11.7 115
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Basin Index (%) 125 110
LARAMIE RIVER
BROOKLYN LAKE 10240 32.0 22.3 143 32.1 22.9 140
CINNABAR PARK 9574 26.5 20.0 132 31.2 25.4 123
CROW CREEK 8330 4.5 .3 1500* 12.9 12.0 108
DEADMAN HILL 10220 26.3 17.2 153 25.2 19.0 133
RAWAH 9020 11.0 8.3 133 18.8 15.6 121
ROACH 9700 22.0 16.6 133 26.3 20.7 127
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Basin Index (%) 144 127
S. PLATTE
BLACK MOUNTAIN 8920 11.9 -M * -M -M *
CROW CREEK 8330 4.5 .3 1500* 12.9 12.0 108
DEADMAN HILL 10220 26.3 17.2 153 25.2 19.0 133
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Basin Index (%) 176* 123
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.7 3.9 146 18.8 16.1 117
DIVIDE PEAK 8880 18.9 18.6 102 24.8 22.9 108
ELK RIVER 8700 19.0 15.2 125 23.9 21.4 112
LITTLE SNAKE RIVER 8915 29.5 24.1 122 36.4 31.2 117
OLD BATTLE 10000 35.8 32.9 109 39.1 37.2 105
SAGE CREEK BASIN 7850 8.4 5.4 156 13.6 15.3 89
SANDSTONE RS 8150 8.6 10.0 86 19.2 19.6 98
WHISKEY PARK 8950 40.3 25.8 156 41.9 29.7 141
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Basin Index (%) 122 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.5 12.6 123 15.3 14.2 108
BLIND BULL SUM 8650 37.4 24.1 155 23.7 20.3 117
EAST RIM DIVIDE 7930 14.3 9.4 152 16.0 12.3 130
ELKHART PARK G.S. 9400 18.2 11.9 153 17.3 14.1 123
GROS VENTRE SUMMIT 8750 14.4 13.2 109 15.0 13.8 109
GUNSIGHT PASS 9820 21.3 13.7 155 19.4 15.0 129
KENDALL R.S. 7740 19.7 8.1 243 23.3 14.8 157
LOOMIS PARK 8240 24.1 12.8 188 25.3 18.0 141
NEW FORK LAKE 8340 13.7 8.6 159 13.6 11.4 119
POCKET CREEK 9360 12.1 -M * 12.9 -M *
SNIDER BASIN 8060 16.3 10.6 154 19.9 14.8 134
SPRING CREEK DIVIDE 9000 37.4 23.5 159 33.5 24.9 135
TRIPLE PEAK 8500 34.9 19.2 182 37.8 26.5 143
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Basin Index (%) 159 130
LOWER GREEN RIVER
BLACKS FORK JCT 8870 5.4 -M * 14.1 -M *
BUCK PASTURE 9700 12.9 -M * 17.9 -M *
EF BLACKS FORK GS 9360 8.0 -M * 10.7 -M *
HAMS FORK 7840 11.7 6.4 183 14.5 12.1 120
HEWINTA 9519 7.8 7.9 99 15.8 15.0 105
HICKERSON PARK 9145 2.9 5.3 55 9.4 11.1 85
HOLE-IN-ROCK 9150 3.3 5.7 58 10.4 10.6 98
INDIAN CREEK 9425 32.2 23.4 138 27.5 23.7 116
KELLEY R.S. 8180 17.0 12.4 137 21.1 19.0 111
SPIRIT LK 10235 9.4 -M * 14.8 -M *
STEEL CREEK PARK 10200 20.9 16.2 129 17.3 17.8 97
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Basin Index (%) 124 106
UPPER BEAR RIVER
BEAR RIVER RS 8777 3.2 -M * 13.3 -M *
BUG LAKE 7950 21.2 16.9 125 21.2 20.5 103
BURTS MILLER RANCH 8000 .0 -M * 7.2 -M *
CHALK CREEK #1 8993 21.6 24.5 88 24.3 26.9 90
HAYDEN FORK 9212 11.1 11.4 97 22.3 22.5 99
KELLEY R.S. 8180 17.0 12.4 137 21.1 19.0 111
LILY LAKE 9156 11.0 10.4 106 16.0 18.4 87
MONTE CRISTO 8960 23.9 27.4 87 26.4 27.5 96
SALT RIVER SUMMIT 7760 14.8 9.4 157 19.5 17.4 112
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Basin Index (%) 107 99
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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.