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: APRIL 16 , 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 22.3 12.8 174 26.9 21.4 126
BLACK BEAR 8170 -M 36.7 * -M 39.1 *
BLIND BULL SUM 8650 -M 23.8 * -M 19.9 *
COTTONWOOD CREEK 7670 30.6 19.6 156 35.0 25.3 138
EAST RIM DIVIDE 7930 -M 9.8 * -M 12.0 *
GRAND TARGHEE 9260 51.2 41.2 124 -M 32.2 *
GRANITE CREEK 6770 -M 12.0 * -M 20.0 *
GRASSY LAKE 7265 -M 31.5 * -M 36.8 *
GROS VENTRE SUMMIT 8750 -M 13.0 * -M 13.4 *
GUNSIGHT PASS 9820 21.1 13.4 157 19.3 14.5 133
LEWIS LAKE DIVIDE 7850 -M 30.2 * -M 36.2 *
PHILLIPS BENCH 8200 34.8 26.0 134 35.0 28.7 122
SALT RIVER SUMMIT 7760 -M 10.9 * -M 17.1 *
SNAKE RIVER STATION 6920 20.9 12.4 169 26.4 23.1 114
SPRING CREEK DIVIDE 9000 36.4 23.4 156 33.3 24.4 136
THUMB DIVIDE 7980 20.6 14.4 143 19.5 19.2 102
TOGWOTEE PASS 9580 -M 23.2 * -M 25.1 *
TWO OCEAN PLATEAU 9240 41.0 27.4 150 34.7 28.0 124
WILLOW CREEK 8380 40.2 26.7 151 42.1 34.6 122
YOUNTS PEAK 8350 -M 14.8 * -M 16.3 *
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Basin Index (%) 147 124*
MADISON-GALLATIN
BLACK BEAR 8170 -M 36.7 * -M 39.1 *
CANYON 7870 15.7 12.4 127 17.1 16.7 102
MADISON PLATEAU 7750 -M 22.6 * -M 27.0 *
WEST YELLOWSTONE 6700 -M 8.2 * -M 14.6 *
WHISKEY CREEK 6800 -M 14.8 * -M 20.8 *
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Basin Index (%) 127* 102*
YELLOWSTONE
BEARTOOTH LAKE 9360 32.6 22.6 144 30.7 20.4 150
BURNT MTN 5880 10.6 .0 * 21.2 13.6 156
CANYON 7870 15.7 12.4 127 17.1 16.7 102
COLE CREEK 7850 25.3 15.7 161 18.4 14.1 130
EVENING STAR 9200 40.5 24.9 163 42.0 28.2 149
FISHER CREEK 9100 44.4 32.0 139 40.4 32.7 124
NORTHEAST ENTRANCE 7350 14.5 7.8 186 16.0 12.7 126
PARKER PEAK 9400 -M 20.6 * -M 18.3 *
SYLVAN LAKE 8420 -M 20.1 * -M 23.0 *
THUMB DIVIDE 7980 20.6 14.4 143 19.5 19.2 102
TWO OCEAN PLATEAU 9240 41.0 27.4 150 34.7 28.0 124
WHITE MILL 8700 -M 23.6 * -M 24.5 *
WOLVERINE 7650 17.0 8.3 205 18.0 12.6 143
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Basin Index (%) 158 130
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 16.4 *
CASTLE CREEK 8400 9.7 -M * 13.0 -M *
COLD SPRINGS 9630 9.4 5.6 168 13.8 10.5 131
DEER PARK 9700 17.4 16.0 109 20.1 20.9 96
HOBBS PARK 10100 16.2 14.9 109 14.8 14.3 103
KIRWIN 9550 20.3 10.0 203 18.9 12.1 156
LITTLE WARM 9370 14.7 10.2 144 17.5 13.5 130
OWL CREEK 8975 7.7 4.9 157 8.4 6.5 129
SOUTH PASS 9040 16.3 15.8 103 15.8 18.1 87
ST. LAWRENCE ALT 8620 3.6 6.2 58 9.7 9.5 102
TOGWOTEE PASS 9580 -M 23.2 * -M 25.1 *
TOWNSEND CREEK 8700 8.0 9.9 81 10.1 12.8 79
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Basin Index (%) 121 109
BIGHORN BASIN
BALD MTN. 9380 27.6 19.5 142 21.8 17.8 122
BEAR TRAP MEADOW 8200 11.2 4.2 267 12.4 9.1 136
BONE SPRINGS DIV 9350 23.6 16.6 142 18.5 16.3 113
GRAVE SPRINGS 8550 13.2 9.6 138 13.7 11.2 122
KIRWIN 9550 20.3 10.0 203 18.9 12.1 156
MARQUETTE 8760 15.9 -M * 14.4 -M *
MIDDLE POWDER 7760 19.1 12.5 153 15.3 12.4 123
OWL CREEK 8975 7.7 4.9 157 8.4 6.5 129
POWDER RIVER PASS 9480 16.3 10.1 161 17.8 13.3 134
SHELL CREEK 9580 21.1 15.4 137 18.1 14.5 125
TIMBER CREEK 7950 7.2 5.1 141 10.4 8.0 130
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Basin Index (%) 155 128
SHOSHONE RIVER
BLACKWATER 9780 33.8 23.7 143 30.7 21.4 143
EVENING STAR 9200 40.5 24.9 163 42.0 28.2 149
MARQUETTE 8760 15.9 -M * 14.4 -M *
SYLVAN ROAD 7120 14.0 10.3 136 22.5 17.2 131
YOUNTS PEAK 8350 -M 14.8 * -M 16.3 *
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Basin Index (%) 150 143
POWDER RIVER
BEAR TRAP MEADOW 8200 11.2 4.2 267 12.4 9.1 136
CLOUD PEAK RESERVOIR 9860 22.6 15.4 147 20.4 14.3 143
GRAVE SPRINGS 8550 13.2 9.6 138 13.7 11.2 122
HANSEN SAWMILL 8360 10.9 5.6 195 13.7 9.2 149
MIDDLE POWDER 7760 19.1 12.5 153 15.3 12.4 123
POWDER RIVER PASS 9480 16.3 10.1 161 17.8 13.3 134
SOLDIER PARK 8720 14.5 -M * 13.3 -M *
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Basin Index (%) 163 134
TONGUE RIVER
BIG GOOSE 7990 13.7 9.6 143 16.5 12.2 135
BONE SPRINGS DIV 9350 23.6 16.6 142 18.5 16.3 113
BURGESS JUNCTION 7880 17.7 12.2 145 17.6 13.1 134
DOME LAKE 8880 17.6 12.0 147 16.7 14.4 116
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 19.4 12.6 154 21.2 15.3 139
TIE CREEK 6870 9.6 4.7 204 16.6 12.4 134
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Basin Index (%) 150 128
BELLE FOURCHE
COLE CANYON 5910 7.3 2.9 252 14.6 10.0 146
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Basin Index (%) 252 146
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.9 4.8 165 17.1 12.5 137
NORTH RAPID CREEK 6130 7.3 5.1 143 15.7 10.4 151
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Basin Index (%) 154 143
UPPER N. PLATTE
ARAPAHO RIDGE 10960 30.0 21.6 139 29.2 23.8 123
BLACKHALL MTN 9820 -M -M * -M -M *
COLUMBINE 9160 36.8 21.5 171 -M 26.5 *
DIVIDE PEAK 8880 20.9 19.8 106 24.7 22.3 111
JOE WRIGHT 10120 26.0 22.1 118 33.6 27.1 124
LAPRELE CREEK 8375 9.3 8.9 104 12.5 13.3 94
MED BOW 10500 -M -M * -M -M *
NORTH FRENCH CREEK 10130 38.6 31.9 121 36.5 27.9 131
NEVER SUMMER 10280 -M 20.6 * -M -M *
OLD BATTLE 10000 36.3 32.2 113 39.0 36.3 107
RAWAH 9020 13.4 9.4 143 18.7 15.2 123
SAGE CREEK BASIN 7850 11.6 8.2 141 13.6 15.0 91
SAND LAKE 10050 35.6 30.4 117 34.2 26.0 132
SOUTH BRUSH CREEK 8440 11.7 10.6 110 16.2 16.0 101
TOWER 10500 -M 47.5 * -M 41.2 *
WEBBER SPRINGS 9250 27.3 23.1 118 30.3 27.8 109
WILLOW CREEK PASS 9540 16.6 12.7 131 16.0 14.0 114
ZIRKEL 9340 -M 23.5 * -M 29.3 *
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Basin Index (%) 124 115
SWEETWATER
DEER PARK 9700 17.4 16.0 109 20.1 20.9 96
LARSEN CREEK 9000 11.8 10.7 110 16.1 -M *
SOUTH PASS 9040 16.3 15.8 103 15.8 18.1 87
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Basin Index (%) 107 92
LOWER N. PLATTE
CASPER MTN. 7900 19.6 14.4 136 17.1 16.1 106
LAPRELE CREEK 8375 9.3 8.9 104 12.5 13.3 94
RENO HILL 8400 20.4 14.1 145 22.3 16.6 134
WINDY PEAK 7900 9.3 7.3 127 13.3 11.2 119
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Basin Index (%) 131 114
LARAMIE RIVER
BROOKLYN LAKE 10240 32.6 22.2 147 31.8 22.2 143
CINNABAR PARK 9574 26.3 20.9 126 31.0 24.9 124
CROW CREEK 8330 6.5 3.2 203 12.9 11.5 112
DEADMAN HILL 10220 26.4 16.5 160 24.9 18.3 136
RAWAH 9020 13.4 9.4 143 18.7 15.2 123
ROACH 9700 23.3 16.5 141 25.9 20.1 129
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Basin Index (%) 145 129
S. PLATTE
BLACK MOUNTAIN 8920 13.0 -M * -M -M *
CROW CREEK 8330 6.5 3.2 203 12.9 11.5 112
DEADMAN HILL 10220 26.4 16.5 160 24.9 18.3 136
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Basin Index (%) 167 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 8.9 6.3 141 18.8 15.7 120
DIVIDE PEAK 8880 20.9 19.8 106 24.7 22.3 111
ELK RIVER 8700 21.7 16.9 128 23.9 20.8 115
LITTLE SNAKE RIVER 8915 31.9 25.6 125 36.4 30.8 118
OLD BATTLE 10000 36.3 32.2 113 39.0 36.3 107
SAGE CREEK BASIN 7850 11.6 8.2 141 13.6 15.0 91
SANDSTONE RS 8150 11.2 11.4 98 19.1 19.0 101
WHISKEY PARK 8950 41.7 26.7 156 41.9 29.0 144
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Basin Index (%) 125 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.3 12.8 120 15.3 13.8 111
BLIND BULL SUM 8650 -M 23.8 * -M 19.9 *
EAST RIM DIVIDE 7930 -M 9.8 * -M 12.0 *
ELKHART PARK G.S. 9400 18.2 12.0 152 17.2 13.8 125
GROS VENTRE SUMMIT 8750 -M 13.0 * -M 13.4 *
GUNSIGHT PASS 9820 21.1 13.4 157 19.3 14.5 133
KENDALL R.S. 7740 21.0 9.6 219 23.2 14.5 160
LOOMIS PARK 8240 24.6 13.5 182 25.1 17.7 142
NEW FORK LAKE 8340 -M 9.4 * -M 11.1 *
POCKET CREEK 9360 12.3 -M * 12.9 -M *
SNIDER BASIN 8060 -M 11.4 * -M 14.5 *
SPRING CREEK DIVIDE 9000 36.4 23.4 156 33.3 24.4 136
TRIPLE PEAK 8500 34.7 19.5 178 37.5 25.9 145
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Basin Index (%) 164 137
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * -M -M *
BUCK PASTURE 9700 -M -M * -M -M *
EF BLACKS FORK GS 9360 -M -M * -M -M *
HAMS FORK 7840 14.4 8.2 176 14.3 11.7 122
HEWINTA 9519 -M 9.4 * -M 14.6 *
HICKERSON PARK 9145 5.9 6.3 94 9.5 10.7 89
HOLE-IN-ROCK 9150 -M 6.6 * -M 10.3 *
INDIAN CREEK 9425 -M 23.7 * -M 23.2 *
KELLEY R.S. 8180 18.5 13.5 137 21.2 18.6 114
SPIRIT LK 10235 -M -M * -M -M *
STEEL CREEK PARK 10200 -M 16.1 * -M 17.3 *
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Basin Index (%) 139* 110*
UPPER BEAR RIVER
BEAR RIVER RS 8777 -M -M * -M -M *
BUG LAKE 7950 -M 18.8 * -M 20.0 *
BURTS MILLER RANCH 8000 -M -M * -M -M *
CHALK CREEK #1 8993 -M 24.9 * -M 26.2 *
HAYDEN FORK 9212 -M 13.4 * -M 21.9 *
KELLEY R.S. 8180 18.5 13.5 137 21.2 18.6 114
LILY LAKE 9156 -M 12.1 * -M 17.9 *
MONTE CRISTO 8960 -M 27.7 * -M 26.8 *
SALT RIVER SUMMIT 7760 -M 10.9 * -M 17.1 *
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Basin Index (%) 137* 114*
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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.
