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: MARCH 26 , 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 23.0 14.6 158 23.9 19.5 123
BLACK BEAR 8170 37.5 34.2 110 35.5 35.4 100
BLIND BULL SUM 8650 35.0 21.2 165 22.5 18.2 124
COTTONWOOD CREEK 7670 29.4 20.5 143 32.2 22.9 141
EAST RIM DIVIDE 7930 16.8 9.7 173 14.8 11.0 135
GRAND TARGHEE 9260 46.2 34.2 135 35.0 28.1 125
GRANITE CREEK 6770 23.4 14.8 158 23.2 18.6 125
GRASSY LAKE 7265 37.1 30.5 122 35.0 33.6 104
GROS VENTRE SUMMIT 8750 -M 12.1 * 14.4 11.9 121
GUNSIGHT PASS 9820 19.7 12.7 155 18.1 12.6 144
LEWIS LAKE DIVIDE 7850 34.2 28.8 119 -M 33.1 *
PHILLIPS BENCH 8200 33.0 23.3 142 32.1 26.1 123
SALT RIVER SUMMIT 7760 17.5 12.4 141 18.5 15.5 119
SNAKE RIVER STATION 6920 -M 15.7 * -M 21.0 *
SPRING CREEK DIVIDE 9000 34.1 22.1 154 31.3 22.2 141
THUMB DIVIDE 7980 16.4 14.9 110 15.0 17.1 88
TOGWOTEE PASS 9580 30.1 21.2 142 -M 22.4 *
TWO OCEAN PLATEAU 9240 36.7 24.8 148 -M 25.2 *
WILLOW CREEK 8380 39.2 25.8 152 38.4 31.0 124
YOUNTS PEAK 8350 -M 13.7 * -M 14.6 *
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Basin Index (%) 139 120
MADISON-GALLATIN
BLACK BEAR 8170 37.5 34.2 110 35.5 35.4 100
CANYON 7870 13.4 12.0 112 15.0 15.0 100
MADISON PLATEAU 7750 21.5 20.7 104 21.7 24.4 89
WEST YELLOWSTONE 6700 12.5 10.1 124 13.9 13.0 107
WHISKEY CREEK 6800 15.5 14.5 107 18.2 18.7 97
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Basin Index (%) 110 98
YELLOWSTONE
BEARTOOTH LAKE 9360 29.2 20.3 144 27.3 18.2 150
BURNT MTN 5880 9.4 4.7 200 17.0 11.2 152
CANYON 7870 13.4 12.0 112 15.0 15.0 100
COLE CREEK 7850 19.0 12.7 150 13.4 11.3 119
EVENING STAR 9200 36.2 23.3 155 36.7 25.2 146
FISHER CREEK 9100 40.0 28.7 139 35.3 29.4 120
NORTHEAST ENTRANCE 7350 13.5 9.6 141 14.2 11.3 126
PARKER PEAK 9400 28.6 18.2 157 25.9 16.2 160
SYLVAN LAKE 8420 21.7 18.7 116 24.9 20.6 121
THUMB DIVIDE 7980 16.4 14.9 110 15.0 17.1 88
TWO OCEAN PLATEAU 9240 36.7 24.8 148 -M 25.2 *
WHITE MILL 8700 31.0 20.9 148 26.6 21.9 121
WOLVERINE 7650 14.1 8.9 158 15.4 11.3 136
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Basin Index (%) 142 128
WIND RIVER
BURROUGHS CREEK 8750 -M 12.8 * -M 14.7 *
CASTLE CREEK 8400 10.4 -M * 12.2 -M *
COLD SPRINGS 9630 9.3 6.8 137 12.9 9.0 143
DEER PARK 9700 15.9 14.1 113 18.1 17.7 102
HOBBS PARK 10100 14.5 12.7 114 12.8 11.6 110
KIRWIN 9550 17.9 8.8 203 16.5 10.4 159
LITTLE WARM 9370 14.1 9.8 144 16.3 11.7 139
OWL CREEK 8975 7.3 4.8 152 7.1 5.3 134
SOUTH PASS 9040 15.8 14.4 110 14.7 15.8 93
ST. LAWRENCE ALT 8620 4.9 6.5 75 8.1 7.9 103
TOGWOTEE PASS 9580 30.1 21.2 142 -M 22.4 *
TOWNSEND CREEK 8700 7.7 8.7 89 8.8 10.5 84
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Basin Index (%) 128 115
BIGHORN BASIN
BALD MTN. 9380 23.1 17.0 136 17.7 15.4 115
BEAR TRAP MEADOW 8200 10.2 5.2 196 10.1 7.5 135
BONE SPRINGS DIV 9350 19.5 14.5 134 15.4 14.0 110
GRAVE SPRINGS 8550 11.6 8.4 138 11.5 9.3 124
KIRWIN 9550 17.9 8.8 203 16.5 10.4 159
MARQUETTE 8760 13.1 -M * 11.7 -M *
MIDDLE POWDER 7760 15.4 10.5 147 12.5 10.5 119
OWL CREEK 8975 7.3 4.8 152 7.1 5.3 134
POWDER RIVER PASS 9480 14.8 9.6 154 15.6 11.4 137
SHELL CREEK 9580 18.1 13.5 134 15.4 12.4 124
TIMBER CREEK 7950 6.4 4.2 152 7.8 6.5 120
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Basin Index (%) 150 126
SHOSHONE RIVER
BLACKWATER 9780 29.6 21.2 140 26.6 18.8 141
EVENING STAR 9200 36.2 23.3 155 36.7 25.2 146
MARQUETTE 8760 13.1 -M * 11.7 -M *
SYLVAN ROAD 7120 14.3 10.8 132 19.2 15.5 124
YOUNTS PEAK 8350 -M 13.7 * -M 14.6 *
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Basin Index (%) 145 139
POWDER RIVER
BEAR TRAP MEADOW 8200 10.2 5.2 196 10.1 7.5 135
CLOUD PEAK RESERVOIR 9860 19.7 13.4 147 17.4 11.8 147
GRAVE SPRINGS 8550 11.6 8.4 138 11.5 9.3 124
HANSEN SAWMILL 8360 9.3 6.0 155 11.4 7.6 150
MIDDLE POWDER 7760 15.4 10.5 147 12.5 10.5 119
POWDER RIVER PASS 9480 14.8 9.6 154 15.6 11.4 137
SOLDIER PARK 8720 12.2 -M * 10.7 -M *
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Basin Index (%) 153 135
TONGUE RIVER
BIG GOOSE 7990 11.6 8.2 141 13.8 9.6 144
BONE SPRINGS DIV 9350 19.5 14.5 134 15.4 14.0 110
BURGESS JUNCTION 7880 14.3 10.3 139 15.0 10.9 138
DOME LAKE 8880 14.5 10.8 134 13.3 12.0 111
LITTLE GOOSE 8870 13.1 -M * 15.9 -M *
SUCKER CREEK 8880 16.8 11.1 151 17.9 12.8 140
TIE CREEK 6870 8.8 5.3 166 14.0 10.1 139
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Basin Index (%) 142 129
BELLE FOURCHE
COLE CANYON 5910 7.3 5.7 128 13.7 8.2 167
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Basin Index (%) 128 167
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.6 7.1 121 15.9 10.7 149
NORTH RAPID CREEK 6130 9.1 6.7 136 14.6 8.8 166
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Basin Index (%) 128 156
UPPER N. PLATTE
ARAPAHO RIDGE 10960 25.6 18.7 137 25.1 20.3 124
BLACKHALL MTN 9820 35.5 -M * 28.1 -M *
COLUMBINE 9160 33.9 22.0 154 -M 23.7 *
DIVIDE PEAK 8880 18.2 18.5 98 20.9 19.7 106
JOE WRIGHT 10120 21.4 19.6 109 29.7 23.7 125
LAPRELE CREEK 8375 9.4 9.4 100 10.7 11.2 96
MED BOW 10500 7.4 -M * 34.6 -M *
NORTH FRENCH CREEK 10130 33.3 26.8 124 32.2 24.6 131
NEVER SUMMER 10280 23.5 18.6 126 17.6 -M *
OLD BATTLE 10000 32.2 27.8 116 34.7 32.4 107
RAWAH 9020 14.1 9.9 142 16.5 12.8 129
SAGE CREEK BASIN 7850 12.8 12.0 107 11.5 13.3 86
SAND LAKE 10050 31.9 25.9 123 30.5 22.5 136
SOUTH BRUSH CREEK 8440 12.2 11.7 104 13.9 13.9 100
TOWER 10500 48.7 41.6 117 -M 36.8 *
WEBBER SPRINGS 9250 25.1 22.0 114 26.7 24.6 109
WILLOW CREEK PASS 9540 14.1 11.3 125 14.0 12.1 116
ZIRKEL 9340 39.8 25.7 155 -M 26.2 *
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Basin Index (%) 123 115
SWEETWATER
DEER PARK 9700 15.9 14.1 113 18.1 17.7 102
LARSEN CREEK 9000 13.2 11.7 113 15.0 -M *
SOUTH PASS 9040 15.8 14.4 110 14.7 15.8 93
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Basin Index (%) 112 98
LOWER N. PLATTE
CASPER MTN. 7900 17.7 12.8 138 15.0 13.3 113
LAPRELE CREEK 8375 9.4 9.4 100 10.7 11.2 96
RENO HILL 8400 17.3 12.5 138 19.2 13.7 140
WINDY PEAK 7900 9.1 7.6 120 11.4 9.5 120
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Basin Index (%) 126 118
LARAMIE RIVER
BROOKLYN LAKE 10240 29.9 18.5 162 27.3 19.2 142
CINNABAR PARK 9574 22.3 19.4 115 27.8 22.2 125
CROW CREEK 8330 7.2 6.9 104 11.1 9.6 116
DEADMAN HILL 10220 23.8 14.6 163 22.3 15.6 143
RAWAH 9020 14.1 9.9 142 16.5 12.8 129
ROACH 9700 20.2 14.5 139 22.5 17.5 129
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Basin Index (%) 140 132
S. PLATTE
BLACK MOUNTAIN 8920 12.2 -M * -M -M *
CROW CREEK 8330 7.2 6.9 104 11.1 9.6 116
DEADMAN HILL 10220 23.8 14.6 163 22.3 15.6 143
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Basin Index (%) 144 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.7 11.1 105 15.8 14.0 113
DIVIDE PEAK 8880 18.2 18.5 98 20.9 19.7 106
ELK RIVER 8700 20.9 17.7 118 20.7 18.5 112
LITTLE SNAKE RIVER 8915 30.0 21.7 138 32.7 27.3 120
OLD BATTLE 10000 32.2 27.8 116 34.7 32.4 107
SAGE CREEK BASIN 7850 12.8 12.0 107 11.5 13.3 86
SANDSTONE RS 8150 11.1 12.9 86 16.7 17.1 98
WHISKEY PARK 8950 39.4 24.7 160 37.2 25.8 144
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Basin Index (%) 120 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.2 12.0 127 14.2 12.2 116
BLIND BULL SUM 8650 35.0 21.2 165 22.5 18.2 124
EAST RIM DIVIDE 7930 16.8 9.7 173 14.8 11.0 135
ELKHART PARK G.S. 9400 17.1 11.4 150 16.0 12.3 130
GROS VENTRE SUMMIT 8750 -M 12.1 * 14.4 11.9 121
GUNSIGHT PASS 9820 19.7 12.7 155 18.1 12.6 144
KENDALL R.S. 7740 20.5 11.3 181 22.2 13.4 166
LOOMIS PARK 8240 23.8 14.1 169 23.6 16.1 147
NEW FORK LAKE 8340 15.5 9.8 158 13.3 10.1 132
POCKET CREEK 9360 12.3 -M * 12.2 -M *
SNIDER BASIN 8060 19.5 11.4 171 18.8 13.1 144
SPRING CREEK DIVIDE 9000 34.1 22.1 154 31.3 22.2 141
TRIPLE PEAK 8500 33.8 20.4 166 35.5 23.5 151
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Basin Index (%) 161 139
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.1 -M * 12.2 -M *
BUCK PASTURE 9700 13.8 -M * 15.1 -M *
EF BLACKS FORK GS 9360 9.3 -M * 9.2 -M *
HAMS FORK 7840 15.9 10.6 150 13.2 10.5 126
HEWINTA 9519 10.2 10.0 102 12.8 12.8 100
HICKERSON PARK 9145 7.0 6.9 101 8.3 9.2 90
HOLE-IN-ROCK 9150 6.2 6.9 90 8.5 8.6 99
INDIAN CREEK 9425 31.1 22.4 139 25.3 20.9 121
KELLEY R.S. 8180 18.1 14.2 127 20.0 16.8 119
SPIRIT LK 10235 8.9 -M * 12.3 -M *
STEEL CREEK PARK 10200 17.1 14.0 122 14.8 14.8 100
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Basin Index (%) 124 110
UPPER BEAR RIVER
BEAR RIVER RS 8777 8.3 -M * 11.3 -M *
BUG LAKE 7950 21.6 17.4 124 18.8 17.9 105
BURTS MILLER RANCH 8000 6.7 -M * 6.5 -M *
CHALK CREEK #1 8993 20.7 22.3 93 20.7 23.1 90
HAYDEN FORK 9212 14.8 14.6 101 18.7 19.3 97
KELLEY R.S. 8180 18.1 14.2 127 20.0 16.8 119
LILY LAKE 9156 12.9 11.7 110 14.0 15.6 90
MONTE CRISTO 8960 25.3 25.2 100 23.3 24.0 97
SALT RIVER SUMMIT 7760 17.5 12.4 141 18.5 15.5 119
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Basin Index (%) 111 101
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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.