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 TUESDAY: MARCH 11 , 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 22.4 13.8 162 23.0 18.2 126
BLACK BEAR 8170 37.1 31.5 118 34.0 33.1 103
BLIND BULL SUM 8650 34.0 19.4 175 22.3 16.9 132
COTTONWOOD CREEK 7670 28.4 18.5 154 30.6 20.7 148
EAST RIM DIVIDE 7930 16.5 9.4 176 14.6 10.2 143
GRAND TARGHEE 9260 44.1 31.9 138 33.0 25.7 128
GRANITE CREEK 6770 -M 14.6 * -M 17.5 *
GRASSY LAKE 7265 35.2 27.6 128 33.3 31.2 107
GROS VENTRE SUMMIT 8750 14.3 10.9 131 14.0 10.9 128
GUNSIGHT PASS 9820 19.0 11.6 164 17.5 11.6 151
LEWIS LAKE DIVIDE 7850 34.2 26.5 129 -M 30.8 *
PHILLIPS BENCH 8200 31.7 21.2 150 -M 24.2 *
SALT RIVER SUMMIT 7760 17.0 11.2 152 17.8 14.2 125
SNAKE RIVER STATION 6920 19.6 15.2 129 22.2 19.6 113
SPRING CREEK DIVIDE 9000 32.7 19.6 167 30.0 20.4 147
THUMB DIVIDE 7980 15.8 13.2 120 14.4 15.8 91
TOGWOTEE PASS 9580 29.2 19.5 150 25.0 20.7 121
TWO OCEAN PLATEAU 9240 35.7 23.1 155 -M 23.3 *
WILLOW CREEK 8380 36.1 24.1 150 -M 28.5 *
YOUNTS PEAK 8350 -M 12.4 * -M 13.4 *
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Basin Index (%) 144 123
MADISON-GALLATIN
BLACK BEAR 8170 37.1 31.5 118 34.0 33.1 103
CANYON 7870 12.8 11.5 111 14.5 14.0 104
MADISON PLATEAU 7750 21.2 19.3 110 21.0 22.8 92
WEST YELLOWSTONE 6700 11.9 9.7 123 13.6 12.4 110
WHISKEY CREEK 6800 15.1 13.2 114 17.6 17.4 101
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Basin Index (%) 115 101
YELLOWSTONE
BEARTOOTH LAKE 9360 27.9 18.4 152 25.4 16.8 151
BURNT MTN 5880 8.3 4.3 193 15.7 10.2 154
CANYON 7870 12.8 11.5 111 14.5 14.0 104
COLE CREEK 7850 16.0 11.2 143 11.5 9.9 116
EVENING STAR 9200 34.8 20.9 167 34.1 23.4 146
FISHER CREEK 9100 39.1 27.0 145 34.4 27.2 126
NORTHEAST ENTRANCE 7350 13.7 8.6 159 13.7 10.5 130
PARKER PEAK 9400 27.1 16.7 162 21.9 15.0 146
SYLVAN LAKE 8420 21.2 17.0 125 24.0 19.0 126
THUMB DIVIDE 7980 15.8 13.2 120 14.4 15.8 91
TWO OCEAN PLATEAU 9240 35.7 23.1 155 -M 23.3 *
WHITE MILL 8700 29.9 19.2 156 25.5 20.3 126
WOLVERINE 7650 15.3 9.0 170 15.0 10.5 143
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Basin Index (%) 149 130
WIND RIVER
BURROUGHS CREEK 8750 -M 11.5 * -M 13.5 *
CASTLE CREEK 8400 10.2 -M * 11.9 -M *
COLD SPRINGS 9630 9.8 5.9 166 12.1 8.0 151
DEER PARK 9700 14.4 12.1 119 16.7 16.3 102
HOBBS PARK 10100 12.4 11.0 113 11.0 10.4 106
KIRWIN 9550 16.9 7.8 217 15.4 9.4 164
LITTLE WARM 9370 13.6 8.7 156 15.8 10.5 150
OWL CREEK 8975 6.4 4.3 149 6.4 4.6 139
SOUTH PASS 9040 14.4 12.5 115 13.4 14.5 92
ST. LAWRENCE ALT 8620 3.9 5.9 66 7.4 7.0 106
TOGWOTEE PASS 9580 29.2 19.5 150 25.0 20.7 121
TOWNSEND CREEK 8700 5.9 7.4 80 7.0 9.4 74
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Basin Index (%) 133 118
BIGHORN BASIN
BALD MTN. 9380 20.6 16.0 129 16.0 13.9 115
BEAR TRAP MEADOW 8200 9.1 4.7 194 9.0 6.6 136
BONE SPRINGS DIV 9350 17.8 13.3 134 14.0 12.6 111
GRAVE SPRINGS 8550 9.8 7.5 131 10.0 8.3 120
KIRWIN 9550 16.9 7.8 217 15.4 9.4 164
MARQUETTE 8760 10.4 -M * 10.3 -M *
MIDDLE POWDER 7760 13.2 8.8 150 10.9 9.3 117
OWL CREEK 8975 6.4 4.3 149 6.4 4.6 139
POWDER RIVER PASS 9480 13.5 8.5 159 14.2 10.2 139
SHELL CREEK 9580 16.4 12.3 133 14.0 11.2 125
TIMBER CREEK 7950 5.4 4.1 132 7.2 5.6 129
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Basin Index (%) 148 128
SHOSHONE RIVER
BLACKWATER 9780 28.6 19.1 150 25.2 17.2 147
EVENING STAR 9200 34.8 20.9 167 34.1 23.4 146
MARQUETTE 8760 10.4 -M * 10.3 -M *
SYLVAN ROAD 7120 14.4 10.0 144 18.8 14.6 129
YOUNTS PEAK 8350 -M 12.4 * -M 13.4 *
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Basin Index (%) 156 141
POWDER RIVER
BEAR TRAP MEADOW 8200 9.1 4.7 194 9.0 6.6 136
CLOUD PEAK RESERVOIR 9860 16.4 11.8 139 14.2 10.3 138
GRAVE SPRINGS 8550 9.8 7.5 131 10.0 8.3 120
HANSEN SAWMILL 8360 8.2 5.2 158 10.4 6.6 158
MIDDLE POWDER 7760 13.2 8.8 150 10.9 9.3 117
POWDER RIVER PASS 9480 13.5 8.5 159 14.2 10.2 139
SOLDIER PARK 8720 10.4 -M * 9.3 -M *
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Basin Index (%) 151 134
TONGUE RIVER
BIG GOOSE 7990 8.9 6.9 129 10.8 8.4 129
BONE SPRINGS DIV 9350 17.8 13.3 134 14.0 12.6 111
BURGESS JUNCTION 7880 11.6 9.3 125 12.6 9.7 130
DOME LAKE 8880 11.9 9.4 127 10.9 10.6 103
LITTLE GOOSE 8870 10.2 -M * 13.0 -M *
SUCKER CREEK 8880 13.6 10.1 135 15.1 11.4 132
TIE CREEK 6870 6.5 4.7 138 11.6 9.0 129
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Basin Index (%) 131 122
BELLE FOURCHE
COLE CANYON 5910 6.4 5.1 125 12.4 7.4 168
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Basin Index (%) 125 168
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.2 6.8 121 15.0 10.0 150
NORTH RAPID CREEK 6130 8.2 6.3 130 13.7 8.1 169
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Basin Index (%) 125 159
UPPER N. PLATTE
ARAPAHO RIDGE 10960 24.4 17.7 138 23.9 18.8 127
BLACKHALL MTN 9820 32.5 -M * 28.1 -M *
COLUMBINE 9160 31.5 21.1 149 -M 21.8 *
DIVIDE PEAK 8880 16.3 17.0 96 19.6 18.0 109
JOE WRIGHT 10120 18.4 18.4 100 27.6 21.4 129
LAPRELE CREEK 8375 7.4 8.5 87 8.8 10.1 87
MED BOW 10500 12.7 -M * 28.6 -M *
NORTH FRENCH CREEK 10130 -M 23.0 * -M 22.5 *
NEVER SUMMER 10280 21.8 17.0 128 16.7 -M *
OLD BATTLE 10000 29.4 25.6 115 32.6 29.8 109
RAWAH 9020 12.3 9.3 132 15.0 11.5 130
SAGE CREEK BASIN 7850 9.9 11.6 85 10.8 12.4 87
SAND LAKE 10050 27.9 22.6 123 26.7 20.4 131
SOUTH BRUSH CREEK 8440 10.4 11.1 94 12.6 12.6 100
TOWER 10500 46.4 38.2 121 -M 33.9 *
WEBBER SPRINGS 9250 22.7 20.2 112 24.7 22.6 109
WILLOW CREEK PASS 9540 13.0 10.3 126 13.2 11.0 120
ZIRKEL 9340 38.3 25.2 152 25.0 24.6 102
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Basin Index (%) 121 113
SWEETWATER
DEER PARK 9700 14.4 12.1 119 16.7 16.3 102
LARSEN CREEK 9000 12.9 10.4 124 14.7 -M *
SOUTH PASS 9040 14.4 12.5 115 13.4 14.5 92
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Basin Index (%) 119 98
LOWER N. PLATTE
CASPER MTN. 7900 14.5 11.5 126 13.1 11.9 110
LAPRELE CREEK 8375 7.4 8.5 87 8.8 10.1 87
RENO HILL 8400 13.5 11.2 121 15.8 12.0 132
WINDY PEAK 7900 7.0 6.6 106 9.6 8.5 113
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Basin Index (%) 112 111
LARAMIE RIVER
BROOKLYN LAKE 10240 27.3 16.8 162 26.4 17.4 152
CINNABAR PARK 9574 20.5 17.8 115 20.5 20.6 100
CROW CREEK 8330 6.5 7.1 92 10.0 8.4 119
DEADMAN HILL 10220 21.3 13.0 164 20.1 14.0 144
RAWAH 9020 12.3 9.3 132 15.0 11.5 130
ROACH 9700 -M 13.4 * -M 15.9 *
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Basin Index (%) 137 128
S. PLATTE
BLACK MOUNTAIN 8920 10.5 -M * 11.3 -M *
CROW CREEK 8330 6.5 7.1 92 10.0 8.4 119
DEADMAN HILL 10220 21.3 13.0 164 20.1 14.0 144
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Basin Index (%) 138 134
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.5 10.6 99 15.2 12.9 118
DIVIDE PEAK 8880 16.3 17.0 96 19.6 18.0 109
ELK RIVER 8700 19.4 16.9 115 19.7 17.1 115
LITTLE SNAKE RIVER 8915 26.9 20.3 133 30.8 25.8 119
OLD BATTLE 10000 29.4 25.6 115 32.6 29.8 109
SAGE CREEK BASIN 7850 9.9 11.6 85 10.8 12.4 87
SANDSTONE RS 8150 10.8 11.8 92 15.7 16.0 98
WHISKEY PARK 8950 35.4 23.3 152 34.9 23.9 146
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Basin Index (%) 116 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.8 10.8 137 13.8 11.2 123
BLIND BULL SUM 8650 34.0 19.4 175 22.3 16.9 132
EAST RIM DIVIDE 7930 16.5 9.4 176 14.6 10.2 143
ELKHART PARK G.S. 9400 16.7 10.1 165 15.8 11.1 142
GROS VENTRE SUMMIT 8750 14.3 10.9 131 14.0 10.9 128
GUNSIGHT PASS 9820 19.0 11.6 164 17.5 11.6 151
KENDALL R.S. 7740 21.8 10.5 208 -M 12.5 *
LOOMIS PARK 8240 23.4 12.7 184 23.4 14.9 157
NEW FORK LAKE 8340 15.5 9.0 172 13.1 9.3 141
POCKET CREEK 9360 12.2 -M * 12.1 -M *
SNIDER BASIN 8060 18.7 10.6 176 18.3 12.2 150
SPRING CREEK DIVIDE 9000 32.7 19.6 167 30.0 20.4 147
TRIPLE PEAK 8500 32.8 18.6 176 34.2 21.6 158
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Basin Index (%) 170 144
LOWER GREEN RIVER
BLACKS FORK JCT 8870 7.5 -M * 11.6 -M *
BUCK PASTURE 9700 12.7 -M * 14.3 -M *
EF BLACKS FORK GS 9360 8.8 -M * 8.9 -M *
HAMS FORK 7840 14.8 10.0 148 12.8 9.6 133
HEWINTA 9519 9.5 8.6 110 12.2 11.5 106
HICKERSON PARK 9145 6.2 6.4 97 7.7 8.1 95
HOLE-IN-ROCK 9150 5.8 6.1 95 7.8 7.6 103
INDIAN CREEK 9425 29.7 20.3 146 24.6 19.0 129
KELLEY R.S. 8180 17.8 12.7 140 19.4 15.4 126
SPIRIT LK 10235 8.0 -M * 11.2 -M *
STEEL CREEK PARK 10200 16.7 12.6 133 14.0 13.3 105
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Basin Index (%) 131 117
UPPER BEAR RIVER
BEAR RIVER RS 8777 8.7 -M * 10.8 -M *
BUG LAKE 7950 20.7 16.1 129 18.2 16.4 111
BURTS MILLER RANCH 8000 6.3 -M * 6.1 -M *
CHALK CREEK #1 8993 19.9 20.0 100 19.9 20.8 96
HAYDEN FORK 9212 14.1 13.4 105 18.1 17.4 104
KELLEY R.S. 8180 17.8 12.7 140 19.4 15.4 126
LILY LAKE 9156 12.3 11.1 111 13.5 14.1 96
MONTE CRISTO 8960 24.4 22.9 107 22.3 21.8 102
SALT RIVER SUMMIT 7760 17.0 11.2 152 17.8 14.2 125
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Basin Index (%) 118 108
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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.