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 18 , 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 23.2 14.6 159 23.6 18.8 126
BLACK BEAR 8170 37.8 32.2 117 35.0 34.2 102
BLIND BULL SUM 8650 34.5 20.3 170 22.4 17.5 128
COTTONWOOD CREEK 7670 29.8 19.5 153 32.1 21.7 148
EAST RIM DIVIDE 7930 16.7 9.5 176 14.7 10.5 140
GRAND TARGHEE 9260 46.9 32.8 143 34.5 26.8 129
GRANITE CREEK 6770 23.0 15.0 153 23.1 18.0 128
GRASSY LAKE 7265 36.2 29.1 124 34.9 32.3 108
GROS VENTRE SUMMIT 8750 14.3 11.4 125 14.4 11.3 127
GUNSIGHT PASS 9820 19.5 11.9 164 17.9 12.0 149
LEWIS LAKE DIVIDE 7850 34.4 27.5 125 -M 31.8 *
PHILLIPS BENCH 8200 33.1 22.2 149 -M 25.1 *
SALT RIVER SUMMIT 7760 17.5 11.9 147 18.4 14.8 124
SNAKE RIVER STATION 6920 20.3 15.2 134 23.0 20.2 114
SPRING CREEK DIVIDE 9000 33.7 20.7 163 31.0 21.2 146
THUMB DIVIDE 7980 16.3 13.9 117 14.9 16.3 91
TOGWOTEE PASS 9580 30.0 20.4 147 -M 21.5 *
TWO OCEAN PLATEAU 9240 36.7 23.8 154 -M 24.1 *
WILLOW CREEK 8380 37.8 25.3 149 36.8 29.6 124
YOUNTS PEAK 8350 -M 13.2 * -M 14.0 *
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Basin Index (%) 144 123
MADISON-GALLATIN
BLACK BEAR 8170 37.8 32.2 117 35.0 34.2 102
CANYON 7870 13.5 11.7 115 15.0 14.4 104
MADISON PLATEAU 7750 21.6 20.0 108 21.7 23.4 93
WEST YELLOWSTONE 6700 12.2 9.9 123 13.8 12.6 110
WHISKEY CREEK 6800 15.5 13.9 112 18.0 18.0 100
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Basin Index (%) 115 101
YELLOWSTONE
BEARTOOTH LAKE 9360 28.7 19.0 151 26.1 17.5 149
BURNT MTN 5880 9.5 4.5 211 16.7 10.6 158
CANYON 7870 13.5 11.7 115 15.0 14.4 104
COLE CREEK 7850 18.4 11.8 156 12.7 10.5 121
EVENING STAR 9200 36.0 21.9 164 35.0 24.2 145
FISHER CREEK 9100 40.0 28.1 142 34.9 28.2 124
NORTHEAST ENTRANCE 7350 14.2 8.9 160 14.1 10.9 129
PARKER PEAK 9400 28.0 17.5 160 22.0 15.5 142
SYLVAN LAKE 8420 21.8 17.9 122 24.8 19.7 126
THUMB DIVIDE 7980 16.3 13.9 117 14.9 16.3 91
TWO OCEAN PLATEAU 9240 36.7 23.8 154 -M 24.1 *
WHITE MILL 8700 30.6 19.7 155 26.0 21.0 124
WOLVERINE 7650 14.7 8.8 167 15.2 10.8 141
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Basin Index (%) 149 129
WIND RIVER
BURROUGHS CREEK 8750 -M 12.2 * -M 14.1 *
CASTLE CREEK 8400 10.1 -M * 11.9 -M *
COLD SPRINGS 9630 9.3 6.2 150 12.2 8.4 145
DEER PARK 9700 15.2 12.8 119 17.6 16.9 104
HOBBS PARK 10100 13.9 11.5 121 12.4 10.9 114
KIRWIN 9550 17.5 8.3 211 16.1 9.8 164
LITTLE WARM 9370 13.9 9.1 153 16.1 11.0 146
OWL CREEK 8975 6.6 4.6 143 6.7 4.9 137
SOUTH PASS 9040 15.2 13.4 113 14.1 15.1 93
ST. LAWRENCE ALT 8620 4.7 6.0 78 8.3 7.4 112
TOGWOTEE PASS 9580 30.0 20.4 147 -M 21.5 *
TOWNSEND CREEK 8700 6.9 8.0 86 8.0 9.9 81
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Basin Index (%) 133 118
BIGHORN BASIN
BALD MTN. 9380 22.5 16.4 137 17.2 14.6 118
BEAR TRAP MEADOW 8200 9.6 4.9 196 9.5 6.9 138
BONE SPRINGS DIV 9350 18.8 13.9 135 14.6 13.2 111
GRAVE SPRINGS 8550 11.0 8.0 138 10.9 8.8 124
KIRWIN 9550 17.5 8.3 211 16.1 9.8 164
MARQUETTE 8760 11.6 -M * 10.9 -M *
MIDDLE POWDER 7760 14.6 9.5 154 11.7 9.8 119
OWL CREEK 8975 6.6 4.6 143 6.7 4.9 137
POWDER RIVER PASS 9480 14.1 9.0 157 14.9 10.6 141
SHELL CREEK 9580 17.5 12.7 138 14.9 11.7 127
TIMBER CREEK 7950 5.6 4.2 133 7.5 6.0 125
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Basin Index (%) 151 129
SHOSHONE RIVER
BLACKWATER 9780 29.3 20.5 143 26.3 17.9 147
EVENING STAR 9200 36.0 21.9 164 35.0 24.2 145
MARQUETTE 8760 11.6 -M * 10.9 -M *
SYLVAN ROAD 7120 14.6 10.3 142 19.2 15.0 128
YOUNTS PEAK 8350 -M 13.2 * -M 14.0 *
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Basin Index (%) 152 141
POWDER RIVER
BEAR TRAP MEADOW 8200 9.6 4.9 196 9.5 6.9 138
CLOUD PEAK RESERVOIR 9860 18.8 12.6 149 16.3 11.0 148
GRAVE SPRINGS 8550 11.0 8.0 138 10.9 8.8 124
HANSEN SAWMILL 8360 8.7 5.5 158 10.8 7.0 154
MIDDLE POWDER 7760 14.6 9.5 154 11.7 9.8 119
POWDER RIVER PASS 9480 14.1 9.0 157 14.9 10.6 141
SOLDIER PARK 8720 11.5 -M * 10.2 -M *
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Basin Index (%) 155 137
TONGUE RIVER
BIG GOOSE 7990 11.0 7.6 145 12.8 8.9 144
BONE SPRINGS DIV 9350 18.8 13.9 135 14.6 13.2 111
BURGESS JUNCTION 7880 13.5 9.4 144 13.9 10.2 136
DOME LAKE 8880 13.7 10.0 137 12.6 11.2 112
LITTLE GOOSE 8870 12.5 -M * 15.1 -M *
SUCKER CREEK 8880 15.8 10.7 148 16.9 12.0 141
TIE CREEK 6870 8.3 4.9 169 13.4 9.6 140
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Basin Index (%) 144 129
BELLE FOURCHE
COLE CANYON 5910 7.5 5.5 136 12.8 7.8 164
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Basin Index (%) 136 164
CHEYENNE RIVER BASIN
BLIND PARK 6890 9.0 7.2 125 15.6 10.4 150
NORTH RAPID CREEK 6130 9.0 6.4 141 14.3 8.5 168
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Basin Index (%) 132 158
UPPER N. PLATTE
ARAPAHO RIDGE 10960 24.8 18.0 138 24.2 19.4 125
BLACKHALL MTN 9820 34.2 -M * 28.0 -M *
COLUMBINE 9160 32.5 21.8 149 -M 22.6 *
DIVIDE PEAK 8880 17.6 17.4 101 20.3 18.8 108
JOE WRIGHT 10120 18.9 18.9 100 28.7 22.5 128
LAPRELE CREEK 8375 8.2 9.0 91 9.4 10.6 89
MED BOW 10500 11.2 -M * 34.2 -M *
NORTH FRENCH CREEK 10130 31.9 24.6 130 30.4 23.4 130
NEVER SUMMER 10280 22.5 17.6 128 16.9 -M *
OLD BATTLE 10000 30.8 26.2 118 33.6 31.0 108
RAWAH 9020 13.2 9.2 143 15.6 11.8 132
SAGE CREEK BASIN 7850 11.7 11.6 101 11.4 12.9 88
SAND LAKE 10050 30.5 24.2 126 28.0 21.3 131
SOUTH BRUSH CREEK 8440 11.4 11.1 103 13.2 13.1 101
TOWER 10500 47.6 39.5 121 -M 35.3 *
WEBBER SPRINGS 9250 24.2 20.9 116 25.7 23.5 109
WILLOW CREEK PASS 9540 13.4 10.8 124 13.1 11.6 113
ZIRKEL 9340 39.0 25.8 151 27.9 25.1 111
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Basin Index (%) 123 115
SWEETWATER
DEER PARK 9700 15.2 12.8 119 17.6 16.9 104
LARSEN CREEK 9000 12.9 11.0 117 15.0 -M *
SOUTH PASS 9040 15.2 13.4 113 14.1 15.1 93
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Basin Index (%) 116 99
LOWER N. PLATTE
CASPER MTN. 7900 16.2 12.0 135 14.2 12.5 114
LAPRELE CREEK 8375 8.2 9.0 91 9.4 10.6 89
RENO HILL 8400 15.7 11.8 133 17.3 12.7 136
WINDY PEAK 7900 7.8 6.9 113 10.4 8.9 117
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Basin Index (%) 121 115
LARAMIE RIVER
BROOKLYN LAKE 10240 29.1 17.5 166 26.7 18.1 148
CINNABAR PARK 9574 22.1 17.8 124 20.8 21.1 99
CROW CREEK 8330 6.6 7.0 94 10.4 8.7 120
DEADMAN HILL 10220 22.5 13.7 164 20.5 14.7 139
RAWAH 9020 13.2 9.2 143 15.6 11.8 132
ROACH 9700 19.3 13.8 140 22.0 16.6 133
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Basin Index (%) 143 127
S. PLATTE
BLACK MOUNTAIN 8920 11.2 -M * 10.2 -M *
CROW CREEK 8330 6.6 7.0 94 10.4 8.7 120
DEADMAN HILL 10220 22.5 13.7 164 20.5 14.7 139
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Basin Index (%) 141 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.9 11.2 106 15.5 13.4 116
DIVIDE PEAK 8880 17.6 17.4 101 20.3 18.8 108
ELK RIVER 8700 20.3 17.3 117 20.0 17.7 113
LITTLE SNAKE RIVER 8915 28.8 20.8 138 31.8 26.2 121
OLD BATTLE 10000 30.8 26.2 118 33.6 31.0 108
SAGE CREEK BASIN 7850 11.7 11.6 101 11.4 12.9 88
SANDSTONE RS 8150 11.2 11.8 95 16.3 16.5 99
WHISKEY PARK 8950 37.8 24.1 157 35.0 24.7 142
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Basin Index (%) 121 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.0 11.4 132 13.9 11.6 120
BLIND BULL SUM 8650 34.5 20.3 170 22.4 17.5 128
EAST RIM DIVIDE 7930 16.7 9.5 176 14.7 10.5 140
ELKHART PARK G.S. 9400 16.9 10.5 161 15.8 11.7 135
GROS VENTRE SUMMIT 8750 14.3 11.4 125 14.4 11.3 127
GUNSIGHT PASS 9820 19.5 11.9 164 17.9 12.0 149
KENDALL R.S. 7740 22.0 11.1 198 -M 12.8 *
LOOMIS PARK 8240 23.8 13.2 180 23.5 15.4 153
NEW FORK LAKE 8340 15.5 9.2 168 13.1 9.6 136
POCKET CREEK 9360 12.4 -M * 12.2 -M *
SNIDER BASIN 8060 19.3 10.9 177 18.5 12.7 146
SPRING CREEK DIVIDE 9000 33.7 20.7 163 31.0 21.2 146
TRIPLE PEAK 8500 33.9 19.2 177 35.3 22.5 157
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Basin Index (%) 166 141
LOWER GREEN RIVER
BLACKS FORK JCT 8870 7.8 -M * 12.1 -M *
BUCK PASTURE 9700 13.4 -M * 14.6 -M *
EF BLACKS FORK GS 9360 9.3 -M * 9.3 -M *
HAMS FORK 7840 15.5 10.2 152 13.0 10.0 130
HEWINTA 9519 9.9 9.6 103 12.6 12.2 103
HICKERSON PARK 9145 7.1 6.6 108 8.0 8.7 92
HOLE-IN-ROCK 9150 5.6 6.5 86 8.1 8.2 99
INDIAN CREEK 9425 30.7 21.0 146 25.1 19.8 127
KELLEY R.S. 8180 18.3 13.2 139 19.8 16.0 124
SPIRIT LK 10235 8.5 -M * 11.8 -M *
STEEL CREEK PARK 10200 16.8 13.3 126 14.4 14.1 102
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Basin Index (%) 129 113
UPPER BEAR RIVER
BEAR RIVER RS 8777 9.6 -M * 11.2 -M *
BUG LAKE 7950 21.6 16.5 131 18.6 17.2 108
BURTS MILLER RANCH 8000 7.3 -M * 6.2 -M *
CHALK CREEK #1 8993 20.7 20.8 100 20.3 21.9 93
HAYDEN FORK 9212 15.1 14.2 106 18.6 18.3 102
KELLEY R.S. 8180 18.3 13.2 139 19.8 16.0 124
LILY LAKE 9156 12.8 11.4 112 13.9 14.8 94
MONTE CRISTO 8960 25.4 24.1 105 23.0 22.8 101
SALT RIVER SUMMIT 7760 17.5 11.9 147 18.4 14.8 124
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Basin Index (%) 117 105
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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.