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 SATURDAY: APRIL 5 , 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 25.0 15.2 164 26.1 20.5 127
BLACK BEAR 8170 42.7 37.1 115 -M 37.4 *
BLIND BULL SUM 8650 36.5 23.1 158 23.4 19.2 122
COTTONWOOD CREEK 7670 31.2 21.1 148 34.4 24.2 142
EAST RIM DIVIDE 7930 18.0 10.2 176 15.6 11.5 136
GRAND TARGHEE 9260 50.2 37.9 132 35.3 30.4 116
GRANITE CREEK 6770 24.1 14.7 164 24.1 19.4 124
GRASSY LAKE 7265 42.0 31.6 133 38.6 35.3 109
GROS VENTRE SUMMIT 8750 14.9 13.0 115 14.8 12.7 117
GUNSIGHT PASS 9820 20.5 13.6 151 18.9 13.5 140
LEWIS LAKE DIVIDE 7850 40.1 29.7 135 -M 34.7 *
PHILLIPS BENCH 8200 35.1 24.9 141 34.0 27.6 123
SALT RIVER SUMMIT 7760 18.8 12.9 146 19.3 16.4 118
SNAKE RIVER STATION 6920 -M 15.0 * -M 22.0 *
SPRING CREEK DIVIDE 9000 35.7 22.5 159 31.9 23.4 136
THUMB DIVIDE 7980 21.2 14.7 144 18.3 18.2 101
TOGWOTEE PASS 9580 32.3 21.9 147 32.6 23.8 137
TWO OCEAN PLATEAU 9240 40.2 25.8 156 -M 26.6 *
WILLOW CREEK 8380 41.0 28.3 145 41.1 33.0 125
YOUNTS PEAK 8350 -M 14.3 * -M 15.4 *
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Basin Index (%) 143 124
MADISON-GALLATIN
BLACK BEAR 8170 42.7 37.1 115 -M 37.4 *
CANYON 7870 15.5 12.5 124 16.8 15.9 106
MADISON PLATEAU 7750 25.5 21.4 119 25.1 25.8 97
WEST YELLOWSTONE 6700 14.5 9.9 146 16.3 13.9 117
WHISKEY CREEK 6800 17.8 14.9 119 21.0 19.7 107
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Basin Index (%) 121 105
YELLOWSTONE
BEARTOOTH LAKE 9360 31.6 21.2 149 -M 19.3 *
BURNT MTN 5880 11.8 4.6 257 19.7 12.7 155
CANYON 7870 15.5 12.5 124 16.8 15.9 106
COLE CREEK 7850 22.9 14.3 160 16.3 12.6 129
EVENING STAR 9200 38.9 23.8 163 39.9 26.7 149
FISHER CREEK 9100 43.6 30.9 141 36.8 31.0 119
NORTHEAST ENTRANCE 7350 15.6 9.2 170 15.8 12.0 132
PARKER PEAK 9400 31.9 19.2 166 28.5 17.2 166
SYLVAN LAKE 8420 25.2 19.3 131 28.7 21.8 132
THUMB DIVIDE 7980 21.2 14.7 144 18.3 18.2 101
TWO OCEAN PLATEAU 9240 40.2 25.8 156 -M 26.6 *
WHITE MILL 8700 33.6 22.0 153 28.8 23.2 124
WOLVERINE 7650 15.6 9.4 166 16.9 11.9 142
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Basin Index (%) 153 131
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 15.6 *
CASTLE CREEK 8400 10.6 -M * 12.3 -M *
COLD SPRINGS 9630 9.8 6.9 142 13.6 9.8 139
DEER PARK 9700 -M 15.2 * 19.6 19.4 101
HOBBS PARK 10100 16.1 13.9 116 14.2 13.2 108
KIRWIN 9550 19.3 9.6 201 17.8 11.3 158
LITTLE WARM 9370 14.8 10.2 145 17.1 12.6 136
OWL CREEK 8975 8.3 5.8 143 8.3 5.9 141
SOUTH PASS 9040 16.8 15.1 111 15.4 17.1 90
ST. LAWRENCE ALT 8620 5.4 6.8 79 8.6 8.8 98
TOGWOTEE PASS 9580 32.3 21.9 147 32.6 23.8 137
TOWNSEND CREEK 8700 8.5 9.4 90 9.7 11.8 82
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Basin Index (%) 132 117
BIGHORN BASIN
BALD MTN. 9380 25.7 19.0 135 20.2 16.6 122
BEAR TRAP MEADOW 8200 11.3 5.0 226 11.5 8.3 139
BONE SPRINGS DIV 9350 21.8 16.6 131 17.1 15.2 112
GRAVE SPRINGS 8550 13.4 9.2 146 13.2 10.3 128
KIRWIN 9550 19.3 9.6 201 17.8 11.3 158
MARQUETTE 8760 15.5 -M * 13.6 -M *
MIDDLE POWDER 7760 18.2 11.8 154 14.5 11.4 127
OWL CREEK 8975 8.3 5.8 143 8.3 5.9 141
POWDER RIVER PASS 9480 15.7 10.1 155 16.9 12.2 139
SHELL CREEK 9580 19.6 14.8 132 16.8 13.5 124
TIMBER CREEK 7950 7.2 4.9 147 9.0 7.2 125
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Basin Index (%) 150 130
SHOSHONE RIVER
BLACKWATER 9780 32.4 22.4 145 29.2 20.1 145
EVENING STAR 9200 38.9 23.8 163 39.9 26.7 149
MARQUETTE 8760 15.5 -M * 13.6 -M *
SYLVAN ROAD 7120 16.4 10.9 150 21.6 16.4 132
YOUNTS PEAK 8350 -M 14.3 * -M 15.4 *
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Basin Index (%) 154 144
POWDER RIVER
BEAR TRAP MEADOW 8200 11.3 5.0 226 11.5 8.3 139
CLOUD PEAK RESERVOIR 9860 21.0 14.6 144 18.6 13.0 143
GRAVE SPRINGS 8550 13.4 9.2 146 13.2 10.3 128
HANSEN SAWMILL 8360 10.5 6.2 169 12.5 8.4 149
MIDDLE POWDER 7760 18.2 11.8 154 14.5 11.4 127
POWDER RIVER PASS 9480 15.7 10.1 155 16.9 12.2 139
SOLDIER PARK 8720 13.6 -M * 11.8 -M *
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Basin Index (%) 158 137
TONGUE RIVER
BIG GOOSE 7990 12.7 9.4 135 15.0 11.2 134
BONE SPRINGS DIV 9350 21.8 16.6 131 17.1 15.2 112
BURGESS JUNCTION 7880 15.8 11.7 135 16.1 12.1 133
DOME LAKE 8880 16.2 11.7 138 14.9 13.3 112
LITTLE GOOSE 8870 14.5 -M * 17.2 -M *
SUCKER CREEK 8880 18.2 11.9 153 19.5 14.1 138
TIE CREEK 6870 9.5 5.5 173 15.1 11.4 132
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Basin Index (%) 141 126
BELLE FOURCHE
COLE CANYON 5910 7.8 5.5 142 14.4 9.2 157
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Basin Index (%) 142 157
CHEYENNE RIVER BASIN
BLIND PARK 6890 9.5 7.1 134 16.7 11.6 144
NORTH RAPID CREEK 6130 9.9 6.7 148 15.1 9.6 157
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Basin Index (%) 141 150
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.1 20.6 136 27.1 22.0 123
BLACKHALL MTN 9820 38.9 -M * -M -M *
COLUMBINE 9160 37.0 23.3 159 -M 25.1 *
DIVIDE PEAK 8880 21.6 19.8 109 23.9 21.1 113
JOE WRIGHT 10120 23.3 20.8 112 32.0 25.4 126
LAPRELE CREEK 8375 10.4 9.4 111 11.6 12.3 94
MED BOW 10500 6.7 -M * 35.6 -M *
NORTH FRENCH CREEK 10130 37.7 29.0 130 32.3 26.3 123
NEVER SUMMER 10280 25.2 20.2 125 19.3 -M *
OLD BATTLE 10000 35.6 30.9 115 36.2 34.4 105
RAWAH 9020 15.0 10.5 143 17.7 13.9 127
SAGE CREEK BASIN 7850 14.1 12.4 114 13.5 14.2 95
SAND LAKE 10050 35.3 28.5 124 32.6 24.3 134
SOUTH BRUSH CREEK 8440 13.4 12.0 112 15.6 15.0 104
TOWER 10500 53.1 45.3 117 -M 39.2 *
WEBBER SPRINGS 9250 27.8 23.0 121 29.6 26.2 113
WILLOW CREEK PASS 9540 15.1 12.0 126 14.8 13.2 112
ZIRKEL 9340 42.8 26.3 163 -M 27.9 *
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Basin Index (%) 127 116
SWEETWATER
DEER PARK 9700 -M 15.2 * 19.6 19.4 101
LARSEN CREEK 9000 14.3 11.8 121 16.1 -M *
SOUTH PASS 9040 16.8 15.1 111 15.4 17.1 90
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Basin Index (%) 116 96
LOWER N. PLATTE
CASPER MTN. 7900 19.5 14.2 137 16.5 14.6 113
LAPRELE CREEK 8375 10.4 9.4 111 11.6 12.3 94
RENO HILL 8400 19.6 13.9 141 21.1 15.1 140
WINDY PEAK 7900 9.6 7.8 123 12.2 10.3 118
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Basin Index (%) 130 117
LARAMIE RIVER
BROOKLYN LAKE 10240 32.2 21.3 151 28.8 20.8 138
CINNABAR PARK 9574 25.0 20.9 120 30.1 23.8 126
CROW CREEK 8330 7.0 7.0 100 11.6 10.6 109
DEADMAN HILL 10220 25.3 15.9 159 23.6 17.0 139
RAWAH 9020 15.0 10.5 143 17.7 13.9 127
ROACH 9700 21.9 16.3 134 24.6 18.9 130
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Basin Index (%) 138 130
S. PLATTE
BLACK MOUNTAIN 8920 12.9 -M * -M -M *
CROW CREEK 8330 7.0 7.0 100 11.6 10.6 109
DEADMAN HILL 10220 25.3 15.9 159 23.6 17.0 139
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Basin Index (%) 141 128
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.7 10.1 126 18.4 14.8 124
DIVIDE PEAK 8880 21.6 19.8 109 23.9 21.1 113
ELK RIVER 8700 23.0 19.1 120 23.1 19.7 117
LITTLE SNAKE RIVER 8915 33.7 24.6 137 36.0 29.1 124
OLD BATTLE 10000 35.6 30.9 115 36.2 34.4 105
SAGE CREEK BASIN 7850 14.1 12.4 114 13.5 14.2 95
SANDSTONE RS 8150 13.7 12.8 107 19.0 18.0 106
WHISKEY PARK 8950 43.2 27.1 159 41.2 27.4 150
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Basin Index (%) 126 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 16.1 12.5 129 15.0 13.0 115
BLIND BULL SUM 8650 36.5 23.1 158 23.4 19.2 122
EAST RIM DIVIDE 7930 18.0 10.2 176 15.6 11.5 136
ELKHART PARK G.S. 9400 17.8 12.2 146 16.8 13.0 129
GROS VENTRE SUMMIT 8750 14.9 13.0 115 14.8 12.7 117
GUNSIGHT PASS 9820 20.5 13.6 151 18.9 13.5 140
KENDALL R.S. 7740 22.9 11.5 199 23.0 14.0 164
LOOMIS PARK 8240 25.3 13.9 182 24.7 17.0 145
NEW FORK LAKE 8340 16.5 10.3 160 13.7 10.6 129
POCKET CREEK 9360 12.9 -M * 12.7 -M *
SNIDER BASIN 8060 20.4 12.3 166 19.3 14.0 138
SPRING CREEK DIVIDE 9000 35.7 22.5 159 31.9 23.4 136
TRIPLE PEAK 8500 35.3 21.9 161 36.8 24.9 148
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Basin Index (%) 158 136
LOWER GREEN RIVER
BLACKS FORK JCT 8870 9.0 -M * 13.6 -M *
BUCK PASTURE 9700 15.6 -M * 17.1 -M *
EF BLACKS FORK GS 9360 10.9 -M * 10.2 -M *
HAMS FORK 7840 17.2 10.9 158 13.9 11.2 124
HEWINTA 9519 12.7 11.0 115 14.4 13.8 104
HICKERSON PARK 9145 8.0 7.8 103 9.0 10.1 89
HOLE-IN-ROCK 9150 6.6 7.0 94 9.5 9.5 100
INDIAN CREEK 9425 33.3 24.5 136 26.9 22.2 121
KELLEY R.S. 8180 19.2 14.9 129 21.1 17.8 119
SPIRIT LK 10235 10.5 -M * 13.9 -M *
STEEL CREEK PARK 10200 19.9 15.6 128 16.5 16.2 102
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Basin Index (%) 127 110
UPPER BEAR RIVER
BEAR RIVER RS 8777 10.8 -M * 12.5 -M *
BUG LAKE 7950 23.9 18.3 131 20.9 19.1 109
BURTS MILLER RANCH 8000 7.3 -M * 7.1 -M *
CHALK CREEK #1 8993 23.3 24.1 97 22.9 24.8 92
HAYDEN FORK 9212 17.9 15.4 116 21.0 20.7 101
KELLEY R.S. 8180 19.2 14.9 129 21.1 17.8 119
LILY LAKE 9156 14.2 12.5 114 15.3 16.8 91
MONTE CRISTO 8960 28.6 27.4 104 25.9 25.5 102
SALT RIVER SUMMIT 7760 18.8 12.9 146 19.3 16.4 118
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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.