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 FRIDAY: MARCH 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 23.5 14.7 160 23.9 19.1 125
BLACK BEAR 8170 37.6 32.7 115 34.5 34.7 99
BLIND BULL SUM 8650 34.7 20.6 168 22.4 17.7 127
COTTONWOOD CREEK 7670 29.8 20.1 148 32.2 22.0 146
EAST RIM DIVIDE 7930 16.8 9.6 175 14.7 10.6 139
GRAND TARGHEE 9260 46.3 33.1 140 34.7 27.2 128
GRANITE CREEK 6770 23.2 14.9 156 23.2 18.2 127
GRASSY LAKE 7265 36.4 29.4 124 35.0 32.8 107
GROS VENTRE SUMMIT 8750 14.2 11.7 121 14.4 11.5 125
GUNSIGHT PASS 9820 19.7 12.1 163 18.0 12.2 148
LEWIS LAKE DIVIDE 7850 34.1 27.9 122 -M 32.2 *
PHILLIPS BENCH 8200 33.0 22.5 147 32.0 25.4 126
SALT RIVER SUMMIT 7760 17.5 12.1 145 18.4 15.0 123
SNAKE RIVER STATION 6920 20.4 15.3 133 23.0 20.5 112
SPRING CREEK DIVIDE 9000 33.8 21.3 159 31.3 21.5 146
THUMB DIVIDE 7980 16.3 14.2 115 15.0 16.6 90
TOGWOTEE PASS 9580 30.2 20.7 146 -M 21.8 *
TWO OCEAN PLATEAU 9240 36.8 24.1 153 -M 24.5 *
WILLOW CREEK 8380 37.9 25.4 149 38.4 30.1 128
YOUNTS PEAK 8350 -M 13.5 * -M 14.2 *
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Basin Index (%) 142 123
MADISON-GALLATIN
BLACK BEAR 8170 37.6 32.7 115 34.5 34.7 99
CANYON 7870 13.5 11.8 114 14.9 14.6 102
MADISON PLATEAU 7750 21.6 20.1 107 21.6 23.8 91
WEST YELLOWSTONE 6700 12.7 9.9 128 13.8 12.8 108
WHISKEY CREEK 6800 15.4 14.2 108 18.2 18.2 100
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Basin Index (%) 114 99
YELLOWSTONE
BEARTOOTH LAKE 9360 28.7 19.5 147 -M 17.8 *
BURNT MTN 5880 9.5 4.6 207 16.7 11.0 152
CANYON 7870 13.5 11.8 114 14.9 14.6 102
COLE CREEK 7850 18.6 12.1 154 13.0 10.8 120
EVENING STAR 9200 35.5 22.4 158 -M 24.6 *
FISHER CREEK 9100 39.9 28.3 141 35.1 28.7 122
NORTHEAST ENTRANCE 7350 14.3 9.1 157 14.0 11.0 127
PARKER PEAK 9400 28.1 17.7 159 21.6 15.7 138
SYLVAN LAKE 8420 21.8 18.2 120 24.8 20.1 123
THUMB DIVIDE 7980 16.3 14.2 115 15.0 16.6 90
TWO OCEAN PLATEAU 9240 36.8 24.1 153 -M 24.5 *
WHITE MILL 8700 30.7 20.0 154 26.1 21.4 122
WOLVERINE 7650 14.4 8.9 162 15.2 11.0 138
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Basin Index (%) 146 122
WIND RIVER
BURROUGHS CREEK 8750 -M 12.4 * -M 14.3 *
CASTLE CREEK 8400 10.2 -M * 11.9 -M *
COLD SPRINGS 9630 9.4 6.4 147 12.6 8.6 147
DEER PARK 9700 -M 13.5 * 17.9 17.3 103
HOBBS PARK 10100 14.4 11.9 121 12.6 11.2 112
KIRWIN 9550 17.8 8.4 212 16.3 10.0 163
LITTLE WARM 9370 13.8 9.3 148 16.1 11.2 144
OWL CREEK 8975 6.8 4.6 148 6.7 5.0 134
SOUTH PASS 9040 15.6 14.0 111 14.5 15.5 94
ST. LAWRENCE ALT 8620 4.4 6.2 71 7.8 7.6 103
TOGWOTEE PASS 9580 30.2 20.7 146 -M 21.8 *
TOWNSEND CREEK 8700 7.4 8.3 89 8.5 10.2 83
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Basin Index (%) 133 117
BIGHORN BASIN
BALD MTN. 9380 22.6 16.5 137 17.3 15.0 115
BEAR TRAP MEADOW 8200 9.7 5.1 190 9.8 7.2 136
BONE SPRINGS DIV 9350 19.1 14.2 135 14.9 13.5 110
GRAVE SPRINGS 8550 11.2 8.2 137 11.2 9.0 124
KIRWIN 9550 17.8 8.4 212 16.3 10.0 163
MARQUETTE 8760 12.7 -M * 11.6 -M *
MIDDLE POWDER 7760 14.9 9.9 151 12.1 10.1 120
OWL CREEK 8975 6.8 4.6 148 6.7 5.0 134
POWDER RIVER PASS 9480 14.4 9.2 157 15.1 10.9 139
SHELL CREEK 9580 17.7 12.9 137 15.1 12.0 126
TIMBER CREEK 7950 6.1 4.2 145 7.6 6.2 123
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Basin Index (%) 151 128
SHOSHONE RIVER
BLACKWATER 9780 29.5 20.9 141 26.3 18.2 145
EVENING STAR 9200 35.5 22.4 158 -M 24.6 *
MARQUETTE 8760 12.7 -M * 11.6 -M *
SYLVAN ROAD 7120 14.7 10.5 140 19.2 15.2 126
YOUNTS PEAK 8350 -M 13.5 * -M 14.2 *
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Basin Index (%) 148 136*
POWDER RIVER
BEAR TRAP MEADOW 8200 9.7 5.1 190 9.8 7.2 136
CLOUD PEAK RESERVOIR 9860 19.2 13.0 148 16.7 11.3 148
GRAVE SPRINGS 8550 11.2 8.2 137 11.2 9.0 124
HANSEN SAWMILL 8360 9.0 5.7 158 11.0 7.2 153
MIDDLE POWDER 7760 14.9 9.9 151 12.1 10.1 120
POWDER RIVER PASS 9480 14.4 9.2 157 15.1 10.9 139
SOLDIER PARK 8720 11.7 -M * 10.4 -M *
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Basin Index (%) 153 136
TONGUE RIVER
BIG GOOSE 7990 11.3 7.9 143 13.4 9.3 144
BONE SPRINGS DIV 9350 19.1 14.2 135 14.9 13.5 110
BURGESS JUNCTION 7880 13.8 9.6 144 14.4 10.6 136
DOME LAKE 8880 14.1 10.3 137 13.0 11.6 112
LITTLE GOOSE 8870 12.9 -M * 15.5 -M *
SUCKER CREEK 8880 16.3 10.9 150 17.5 12.4 141
TIE CREEK 6870 8.6 5.0 172 13.6 9.8 139
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Basin Index (%) 144 129
BELLE FOURCHE
COLE CANYON 5910 7.5 5.5 136 13.0 7.9 165
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Basin Index (%) 136 165
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.9 7.2 124 15.6 10.5 149
NORTH RAPID CREEK 6130 9.3 6.5 143 14.3 8.6 166
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Basin Index (%) 133 157
UPPER N. PLATTE
ARAPAHO RIDGE 10960 25.0 18.1 138 24.8 19.8 125
BLACKHALL MTN 9820 34.9 -M * 28.0 -M *
COLUMBINE 9160 33.1 22.0 150 -M 23.1 *
DIVIDE PEAK 8880 18.2 17.7 103 21.0 19.2 109
JOE WRIGHT 10120 21.2 19.2 110 29.2 23.0 127
LAPRELE CREEK 8375 9.0 9.2 98 10.5 10.9 96
MED BOW 10500 9.9 -M * 34.2 -M *
NORTH FRENCH CREEK 10130 32.9 25.5 129 32.2 23.8 135
NEVER SUMMER 10280 22.8 17.9 127 17.0 -M *
OLD BATTLE 10000 31.4 26.6 118 34.2 31.6 108
RAWAH 9020 13.7 9.6 143 16.1 12.3 131
SAGE CREEK BASIN 7850 12.2 11.5 106 11.5 13.0 88
SAND LAKE 10050 31.7 24.9 127 30.5 21.8 140
SOUTH BRUSH CREEK 8440 12.1 11.2 108 13.8 13.4 103
TOWER 10500 48.0 40.2 119 -M 35.9 *
WEBBER SPRINGS 9250 24.7 21.2 117 26.7 24.0 111
WILLOW CREEK PASS 9540 13.5 11.0 123 13.6 11.8 115
ZIRKEL 9340 39.2 25.7 153 -M 25.5 *
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Basin Index (%) 125 118
SWEETWATER
DEER PARK 9700 -M 13.5 * 17.9 17.3 103
LARSEN CREEK 9000 13.0 11.2 116 15.0 -M *
SOUTH PASS 9040 15.6 14.0 111 14.5 15.5 94
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Basin Index (%) 113 99
LOWER N. PLATTE
CASPER MTN. 7900 16.9 12.3 137 14.7 12.9 114
LAPRELE CREEK 8375 9.0 9.2 98 10.5 10.9 96
RENO HILL 8400 16.9 12.1 140 18.9 13.1 144
WINDY PEAK 7900 8.7 7.2 121 11.2 9.2 122
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Basin Index (%) 126 120
LARAMIE RIVER
BROOKLYN LAKE 10240 29.6 17.8 166 26.7 18.6 144
CINNABAR PARK 9574 22.1 18.2 121 20.8 21.5 97
CROW CREEK 8330 6.9 6.9 100 10.8 8.9 121
DEADMAN HILL 10220 23.3 14.0 166 20.7 15.1 137
RAWAH 9020 13.7 9.6 143 16.1 12.3 131
ROACH 9700 19.7 14.1 140 22.1 17.0 130
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Basin Index (%) 143 125
S. PLATTE
BLACK MOUNTAIN 8920 11.7 -M * -M -M *
CROW CREEK 8330 6.9 6.9 100 10.8 8.9 121
DEADMAN HILL 10220 23.3 14.0 166 20.7 15.1 137
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Basin Index (%) 144 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.3 11.4 108 15.8 13.7 115
DIVIDE PEAK 8880 18.2 17.7 103 21.0 19.2 109
ELK RIVER 8700 20.8 17.4 120 20.5 18.0 114
LITTLE SNAKE RIVER 8915 29.5 21.2 139 32.6 26.6 123
OLD BATTLE 10000 31.4 26.6 118 34.2 31.6 108
SAGE CREEK BASIN 7850 12.2 11.5 106 11.5 13.0 88
SANDSTONE RS 8150 11.4 12.4 92 16.7 16.8 99
WHISKEY PARK 8950 38.2 24.4 157 35.9 25.1 143
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Basin Index (%) 122 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.0 11.7 128 14.2 11.9 119
BLIND BULL SUM 8650 34.7 20.6 168 22.4 17.7 127
EAST RIM DIVIDE 7930 16.8 9.6 175 14.7 10.6 139
ELKHART PARK G.S. 9400 16.9 10.8 156 15.8 11.9 133
GROS VENTRE SUMMIT 8750 14.2 11.7 121 14.4 11.5 125
GUNSIGHT PASS 9820 19.7 12.1 163 18.0 12.2 148
KENDALL R.S. 7740 22.2 11.3 196 22.2 13.0 171
LOOMIS PARK 8240 23.9 13.4 178 23.5 15.6 151
NEW FORK LAKE 8340 15.7 9.3 169 13.2 9.7 136
POCKET CREEK 9360 12.4 -M * 12.2 -M *
SNIDER BASIN 8060 19.5 11.1 176 18.7 12.8 146
SPRING CREEK DIVIDE 9000 33.8 21.3 159 31.3 21.5 146
TRIPLE PEAK 8500 34.0 19.6 173 35.4 22.8 155
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Basin Index (%) 164 142
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.1 -M * 12.2 -M *
BUCK PASTURE 9700 13.9 -M * 15.1 -M *
EF BLACKS FORK GS 9360 9.5 -M * 9.3 -M *
HAMS FORK 7840 15.8 10.4 152 13.2 10.2 129
HEWINTA 9519 10.1 10.0 101 12.7 12.4 102
HICKERSON PARK 9145 7.9 6.7 118 8.3 9.0 92
HOLE-IN-ROCK 9150 6.0 6.7 90 8.4 8.4 100
INDIAN CREEK 9425 31.0 21.5 144 25.2 20.2 125
KELLEY R.S. 8180 18.2 13.5 135 19.9 16.3 122
SPIRIT LK 10235 8.9 -M * 12.1 -M *
STEEL CREEK PARK 10200 17.0 13.5 126 14.8 14.4 103
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Basin Index (%) 129 113
UPPER BEAR RIVER
BEAR RIVER RS 8777 9.9 -M * 11.3 -M *
BUG LAKE 7950 21.8 16.8 130 18.8 17.5 107
BURTS MILLER RANCH 8000 7.4 -M * 6.3 -M *
CHALK CREEK #1 8993 20.9 21.4 98 20.7 22.3 93
HAYDEN FORK 9212 15.6 14.4 108 18.7 18.7 100
KELLEY R.S. 8180 18.2 13.5 135 19.9 16.3 122
LILY LAKE 9156 13.1 11.4 115 13.9 15.1 92
MONTE CRISTO 8960 25.6 24.6 104 23.3 23.3 100
SALT RIVER SUMMIT 7760 17.5 12.1 145 18.4 15.0 123
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Basin Index (%) 116 104
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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.