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: APRIL 17 , 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 22.5 12.5 180 27.0 21.5 126
BLACK BEAR 8170 -M 36.8 * -M 39.3 *
BLIND BULL SUM 8650 37.1 23.9 155 23.6 20.0 118
COTTONWOOD CREEK 7670 30.7 19.3 159 35.1 25.3 139
EAST RIM DIVIDE 7930 -M 9.7 * -M 12.0 *
GRAND TARGHEE 9260 51.3 41.5 124 -M 32.3 *
GRANITE CREEK 6770 22.7 11.7 194 24.4 20.1 121
GRASSY LAKE 7265 41.9 31.6 133 40.6 36.9 110
GROS VENTRE SUMMIT 8750 14.5 13.1 111 14.9 13.5 110
GUNSIGHT PASS 9820 21.7 13.4 162 19.3 14.6 132
LEWIS LAKE DIVIDE 7850 -M 30.2 * -M 36.4 *
PHILLIPS BENCH 8200 35.2 25.9 136 35.0 28.8 122
SALT RIVER SUMMIT 7760 -M 10.6 * -M 17.1 *
SNAKE RIVER STATION 6920 20.4 12.1 169 26.4 23.2 114
SPRING CREEK DIVIDE 9000 36.5 23.4 156 33.3 24.4 136
THUMB DIVIDE 7980 20.7 14.4 144 19.5 19.3 101
TOGWOTEE PASS 9580 33.2 23.3 142 34.0 25.2 135
TWO OCEAN PLATEAU 9240 40.9 27.6 148 34.7 28.1 123
WILLOW CREEK 8380 40.5 26.7 152 42.1 34.6 122
YOUNTS PEAK 8350 -M 14.9 * -M 16.4 *
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Basin Index (%) 147 122
MADISON-GALLATIN
BLACK BEAR 8170 -M 36.8 * -M 39.3 *
CANYON 7870 15.7 12.4 127 17.1 16.8 102
MADISON PLATEAU 7750 -M 22.7 * -M 27.1 *
WEST YELLOWSTONE 6700 -M 8.1 * -M 14.8 *
WHISKEY CREEK 6800 -M 14.9 * -M 20.9 *
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Basin Index (%) 127* 102*
YELLOWSTONE
BEARTOOTH LAKE 9360 32.7 22.8 143 30.8 20.4 151
BURNT MTN 5880 10.6 .0 * 21.2 13.7 155
CANYON 7870 15.7 12.4 127 17.1 16.8 102
COLE CREEK 7850 25.3 15.9 159 18.4 14.2 130
EVENING STAR 9200 40.4 25.0 162 42.0 28.3 148
FISHER CREEK 9100 44.5 32.1 139 40.6 32.9 123
NORTHEAST ENTRANCE 7350 14.5 7.6 191 16.0 12.7 126
PARKER PEAK 9400 34.0 20.7 164 30.3 18.4 165
SYLVAN LAKE 8420 25.0 20.2 124 29.7 23.2 128
THUMB DIVIDE 7980 20.7 14.4 144 19.5 19.3 101
TWO OCEAN PLATEAU 9240 40.9 27.6 148 34.7 28.1 123
WHITE MILL 8700 34.2 23.6 145 29.8 24.6 121
WOLVERINE 7650 16.2 8.1 200 17.9 12.6 142
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Basin Index (%) 154 131
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 16.5 *
CASTLE CREEK 8400 9.8 -M * 13.1 -M *
COLD SPRINGS 9630 9.2 5.4 170 13.8 10.6 130
DEER PARK 9700 17.6 16.0 110 20.1 21.0 96
HOBBS PARK 10100 16.5 14.8 111 14.9 14.4 103
KIRWIN 9550 20.4 10.0 204 19.0 12.2 156
LITTLE WARM 9370 14.8 10.2 145 17.7 13.6 130
OWL CREEK 8975 7.6 4.7 162 8.5 6.6 129
SOUTH PASS 9040 16.5 15.7 105 15.9 18.2 87
ST. LAWRENCE ALT 8620 3.4 6.0 57 9.1 9.6 95
TOGWOTEE PASS 9580 33.2 23.3 142 34.0 25.2 135
TOWNSEND CREEK 8700 8.1 9.8 83 10.1 12.9 78
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Basin Index (%) 127 113
BIGHORN BASIN
BALD MTN. 9380 27.9 19.5 143 22.0 17.9 123
BEAR TRAP MEADOW 8200 11.3 4.0 282 12.4 9.2 135
BONE SPRINGS DIV 9350 23.8 16.4 145 18.7 16.4 114
GRAVE SPRINGS 8550 13.6 9.6 142 14.0 11.3 124
KIRWIN 9550 20.4 10.0 204 19.0 12.2 156
MARQUETTE 8760 15.9 -M * 14.2 -M *
MIDDLE POWDER 7760 19.7 12.5 158 15.8 12.5 126
OWL CREEK 8975 7.6 4.7 162 8.5 6.6 129
POWDER RIVER PASS 9480 16.6 10.1 164 17.9 13.4 134
SHELL CREEK 9580 21.2 15.3 139 18.2 14.5 126
TIMBER CREEK 7950 7.5 5.1 147 10.4 8.1 128
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Basin Index (%) 158 129
SHOSHONE RIVER
BLACKWATER 9780 33.8 23.7 143 30.8 21.5 143
EVENING STAR 9200 40.4 25.0 162 42.0 28.3 148
MARQUETTE 8760 15.9 -M * 14.2 -M *
SYLVAN ROAD 7120 14.0 10.2 137 22.4 17.2 130
YOUNTS PEAK 8350 -M 14.9 * -M 16.4 *
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Basin Index (%) 150 142
POWDER RIVER
BEAR TRAP MEADOW 8200 11.3 4.0 282 12.4 9.2 135
CLOUD PEAK RESERVOIR 9860 22.7 15.5 146 20.5 14.4 142
GRAVE SPRINGS 8550 13.6 9.6 142 14.0 11.3 124
HANSEN SAWMILL 8360 11.1 5.4 206 13.7 9.3 147
MIDDLE POWDER 7760 19.7 12.5 158 15.8 12.5 126
POWDER RIVER PASS 9480 16.6 10.1 164 17.9 13.4 134
SOLDIER PARK 8720 14.7 -M * 13.4 -M *
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Basin Index (%) 166 135
TONGUE RIVER
BIG GOOSE 7990 14.0 9.6 146 16.8 12.2 138
BONE SPRINGS DIV 9350 23.8 16.4 145 18.7 16.4 114
BURGESS JUNCTION 7880 18.0 12.2 148 17.8 13.1 136
DOME LAKE 8880 17.8 11.9 150 17.0 14.5 117
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 19.6 12.7 154 21.5 15.4 140
TIE CREEK 6870 9.8 4.5 218 16.7 12.4 135
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Basin Index (%) 153 129
BELLE FOURCHE
COLE CANYON 5910 7.5 2.6 288 14.7 10.1 146
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Basin Index (%) 288 146
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.1 4.6 176 17.4 12.5 139
NORTH RAPID CREEK 6130 7.6 4.8 158 15.9 10.5 151
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Basin Index (%) 167 145
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.9 21.5 139 29.4 23.9 123
BLACKHALL MTN 9820 39.7 -M * -M -M *
COLUMBINE 9160 36.6 21.2 173 -M 26.6 *
DIVIDE PEAK 8880 20.7 19.6 106 24.7 22.4 110
JOE WRIGHT 10120 25.9 22.1 117 34.0 27.2 125
LAPRELE CREEK 8375 9.5 8.8 108 12.4 13.3 93
MED BOW 10500 -M -M * 37.4 -M *
NORTH FRENCH CREEK 10130 38.9 32.0 122 36.5 28.0 130
NEVER SUMMER 10280 27.1 20.6 132 21.4 -M *
OLD BATTLE 10000 36.0 32.3 111 39.0 36.4 107
RAWAH 9020 13.6 9.2 148 18.7 15.3 122
SAGE CREEK BASIN 7850 11.5 7.6 151 13.7 15.0 91
SAND LAKE 10050 35.7 30.4 117 34.6 26.2 132
SOUTH BRUSH CREEK 8440 11.5 10.3 112 16.2 16.1 101
TOWER 10500 54.1 47.5 114 -M 41.4 *
WEBBER SPRINGS 9250 27.3 22.8 120 30.3 27.9 109
WILLOW CREEK PASS 9540 16.6 12.7 131 16.5 14.1 117
ZIRKEL 9340 41.6 23.2 179 -M 29.5 *
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Basin Index (%) 128 115
SWEETWATER
DEER PARK 9700 17.6 16.0 110 20.1 21.0 96
LARSEN CREEK 9000 11.8 10.6 111 16.0 -M *
SOUTH PASS 9040 16.5 15.7 105 15.9 18.2 87
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Basin Index (%) 109 92
LOWER N. PLATTE
CASPER MTN. 7900 19.7 14.4 137 17.2 16.2 106
LAPRELE CREEK 8375 9.5 8.8 108 12.4 13.3 93
RENO HILL 8400 20.6 14.1 146 22.4 16.6 135
WINDY PEAK 7900 9.4 7.1 132 13.5 11.3 119
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Basin Index (%) 133 114
LARAMIE RIVER
BROOKLYN LAKE 10240 32.8 22.1 148 32.1 22.3 144
CINNABAR PARK 9574 26.7 20.7 129 31.4 25.0 126
CROW CREEK 8330 6.6 2.3 287 12.9 11.7 110
DEADMAN HILL 10220 26.5 16.5 161 25.3 18.4 138
RAWAH 9020 13.6 9.2 148 18.7 15.3 122
ROACH 9700 23.3 16.5 141 26.3 20.2 130
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Basin Index (%) 148 130
S. PLATTE
BLACK MOUNTAIN 8920 13.1 -M * -M -M *
CROW CREEK 8330 6.6 2.3 287 12.9 11.7 110
DEADMAN HILL 10220 26.5 16.5 161 25.3 18.4 138
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Basin Index (%) 176 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.7 5.8 150 18.7 15.8 118
DIVIDE PEAK 8880 20.7 19.6 106 24.7 22.4 110
ELK RIVER 8700 21.9 16.5 133 23.7 20.9 113
LITTLE SNAKE RIVER 8915 31.7 25.3 125 36.4 30.9 118
OLD BATTLE 10000 36.0 32.3 111 39.0 36.4 107
SAGE CREEK BASIN 7850 11.5 7.6 151 13.7 15.0 91
SANDSTONE RS 8150 10.7 11.1 96 19.1 19.1 100
WHISKEY PARK 8950 41.8 26.5 158 42.1 29.1 145
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Basin Index (%) 126 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.5 12.8 121 15.3 13.8 111
BLIND BULL SUM 8650 37.1 23.9 155 23.6 20.0 118
EAST RIM DIVIDE 7930 -M 9.7 * -M 12.0 *
ELKHART PARK G.S. 9400 18.4 12.0 153 17.2 13.8 125
GROS VENTRE SUMMIT 8750 14.5 13.1 111 14.9 13.5 110
GUNSIGHT PASS 9820 21.7 13.4 162 19.3 14.6 132
KENDALL R.S. 7740 21.0 9.3 226 23.2 14.6 159
LOOMIS PARK 8240 25.0 13.3 188 25.2 17.7 142
NEW FORK LAKE 8340 15.4 9.3 166 13.6 11.1 123
POCKET CREEK 9360 12.3 -M * 12.8 -M *
SNIDER BASIN 8060 17.7 11.3 157 19.7 14.6 135
SPRING CREEK DIVIDE 9000 36.5 23.4 156 33.3 24.4 136
TRIPLE PEAK 8500 34.8 19.3 180 37.6 26.0 145
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Basin Index (%) 160 132
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * -M -M *
BUCK PASTURE 9700 15.6 -M * 17.9 -M *
EF BLACKS FORK GS 9360 9.4 -M * 10.6 -M *
HAMS FORK 7840 14.4 7.8 185 14.2 11.8 120
HEWINTA 9519 10.7 9.1 118 14.9 14.6 102
HICKERSON PARK 9145 5.6 6.1 92 9.4 10.8 87
HOLE-IN-ROCK 9150 5.4 6.4 84 10.3 10.3 100
INDIAN CREEK 9425 33.5 23.5 143 27.5 23.2 119
KELLEY R.S. 8180 18.6 13.4 139 21.1 18.6 113
SPIRIT LK 10235 -M -M * -M -M *
STEEL CREEK PARK 10200 21.2 16.1 132 17.3 17.4 99
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Basin Index (%) 133 107
UPPER BEAR RIVER
BEAR RIVER RS 8777 6.6 -M * 13.3 -M *
BUG LAKE 7950 23.5 18.4 128 21.1 20.0 106
BURTS MILLER RANCH 8000 1.7 -M * 7.2 -M *
CHALK CREEK #1 8993 23.1 24.9 93 24.3 26.3 92
HAYDEN FORK 9212 15.3 13.0 118 22.2 22.0 101
KELLEY R.S. 8180 18.6 13.4 139 21.1 18.6 113
LILY LAKE 9156 14.0 11.7 120 16.0 18.0 89
MONTE CRISTO 8960 26.8 27.6 97 26.3 26.9 98
SALT RIVER SUMMIT 7760 -M 10.6 * -M 17.1 *
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Basin Index (%) 111 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.