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 SUNDAY: APRIL 6 , 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 24.9 15.2 164 26.1 20.5 127
BLACK BEAR 8170 42.9 37.2 115 -M 37.6 *
BLIND BULL SUM 8650 36.6 23.1 158 23.4 19.2 122
COTTONWOOD CREEK 7670 31.3 21.0 149 34.5 24.3 142
EAST RIM DIVIDE 7930 17.8 10.2 175 15.6 11.6 134
GRAND TARGHEE 9260 50.8 38.2 133 35.4 30.4 116
GRANITE CREEK 6770 24.2 14.6 166 24.1 19.4 124
GRASSY LAKE 7265 42.2 31.5 134 39.6 35.4 112
GROS VENTRE SUMMIT 8750 14.7 12.9 114 14.8 12.7 117
GUNSIGHT PASS 9820 20.6 13.7 150 19.0 13.6 140
LEWIS LAKE DIVIDE 7850 40.3 29.8 135 -M 34.8 *
PHILLIPS BENCH 8200 35.3 25.2 140 34.1 27.7 123
SALT RIVER SUMMIT 7760 18.7 12.9 145 19.4 16.4 118
SNAKE RIVER STATION 6920 -M 14.9 * -M 22.1 *
SPRING CREEK DIVIDE 9000 35.8 22.5 159 32.0 23.5 136
THUMB DIVIDE 7980 21.3 14.7 145 18.3 18.3 100
TOGWOTEE PASS 9580 32.5 22.0 148 32.7 23.8 137
TWO OCEAN PLATEAU 9240 40.4 25.9 156 -M 26.6 *
WILLOW CREEK 8380 41.6 28.4 146 41.5 33.0 126
YOUNTS PEAK 8350 -M 14.3 * -M 15.5 *
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Basin Index (%) 143 124
MADISON-GALLATIN
BLACK BEAR 8170 42.9 37.2 115 -M 37.6 *
CANYON 7870 15.6 12.5 125 16.9 16.0 106
MADISON PLATEAU 7750 25.6 21.4 120 25.2 25.9 97
WEST YELLOWSTONE 6700 14.5 9.7 149 16.3 14.0 116
WHISKEY CREEK 6800 17.8 14.9 119 21.1 19.8 107
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Basin Index (%) 122 105
YELLOWSTONE
BEARTOOTH LAKE 9360 31.7 21.2 150 -M 19.4 *
BURNT MTN 5880 11.8 4.6 257 19.7 12.8 154
CANYON 7870 15.6 12.5 125 16.9 16.0 106
COLE CREEK 7850 22.9 14.4 159 16.2 12.7 128
EVENING STAR 9200 39.2 23.7 165 40.1 26.8 150
FISHER CREEK 9100 43.8 31.1 141 37.0 31.1 119
NORTHEAST ENTRANCE 7350 15.7 9.1 173 15.8 12.0 132
PARKER PEAK 9400 32.2 19.3 167 28.7 17.3 166
SYLVAN LAKE 8420 25.4 19.3 132 28.9 21.8 133
THUMB DIVIDE 7980 21.3 14.7 145 18.3 18.3 100
TWO OCEAN PLATEAU 9240 40.4 25.9 156 -M 26.6 *
WHITE MILL 8700 33.8 22.1 153 29.0 23.2 125
WOLVERINE 7650 15.3 9.5 161 17.0 12.0 142
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Basin Index (%) 154 131
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 15.6 *
CASTLE CREEK 8400 10.7 -M * 12.3 -M *
COLD SPRINGS 9630 9.7 6.8 143 13.5 9.8 138
DEER PARK 9700 -M 15.4 * 19.6 19.6 100
HOBBS PARK 10100 16.2 14.0 116 14.2 13.2 108
KIRWIN 9550 19.3 9.6 201 17.8 11.4 156
LITTLE WARM 9370 14.8 10.2 145 17.2 12.6 137
OWL CREEK 8975 8.3 5.8 143 8.3 5.9 141
SOUTH PASS 9040 16.9 15.1 112 15.4 17.2 90
ST. LAWRENCE ALT 8620 5.4 6.8 79 8.7 8.9 98
TOGWOTEE PASS 9580 32.5 22.0 148 32.7 23.8 137
TOWNSEND CREEK 8700 8.4 9.5 88 9.7 11.9 82
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Basin Index (%) 132 117
BIGHORN BASIN
BALD MTN. 9380 25.8 19.0 136 20.3 16.7 122
BEAR TRAP MEADOW 8200 11.4 5.0 228 11.5 8.4 137
BONE SPRINGS DIV 9350 21.9 16.7 131 17.2 15.3 112
GRAVE SPRINGS 8550 13.3 9.3 143 13.2 10.4 127
KIRWIN 9550 19.3 9.6 201 17.8 11.4 156
MARQUETTE 8760 15.5 -M * 13.6 -M *
MIDDLE POWDER 7760 18.2 11.9 153 14.5 11.5 126
OWL CREEK 8975 8.3 5.8 143 8.3 5.9 141
POWDER RIVER PASS 9480 15.8 10.1 156 16.9 12.4 136
SHELL CREEK 9580 19.8 15.0 132 17.0 13.6 125
TIMBER CREEK 7950 7.3 4.9 149 9.0 7.2 125
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Basin Index (%) 150 129
SHOSHONE RIVER
BLACKWATER 9780 32.6 22.4 146 29.2 20.2 145
EVENING STAR 9200 39.2 23.7 165 40.1 26.8 150
MARQUETTE 8760 15.5 -M * 13.6 -M *
SYLVAN ROAD 7120 16.5 10.8 153 21.7 16.5 132
YOUNTS PEAK 8350 -M 14.3 * -M 15.5 *
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Basin Index (%) 155 143
POWDER RIVER
BEAR TRAP MEADOW 8200 11.4 5.0 228 11.5 8.4 137
CLOUD PEAK RESERVOIR 9860 21.0 14.7 143 18.4 13.1 140
GRAVE SPRINGS 8550 13.3 9.3 143 13.2 10.4 127
HANSEN SAWMILL 8360 10.6 6.2 171 12.5 8.4 149
MIDDLE POWDER 7760 18.2 11.9 153 14.5 11.5 126
POWDER RIVER PASS 9480 15.8 10.1 156 16.9 12.4 136
SOLDIER PARK 8720 13.6 -M * 11.9 -M *
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Basin Index (%) 158 136
TONGUE RIVER
BIG GOOSE 7990 12.8 9.5 135 15.0 11.2 134
BONE SPRINGS DIV 9350 21.9 16.7 131 17.2 15.3 112
BURGESS JUNCTION 7880 15.8 11.8 134 16.2 12.2 133
DOME LAKE 8880 16.4 11.7 140 15.0 13.4 112
LITTLE GOOSE 8870 14.6 -M * 17.0 -M *
SUCKER CREEK 8880 18.3 12.0 152 19.5 14.2 137
TIE CREEK 6870 9.6 5.5 175 15.1 11.6 130
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Basin Index (%) 141 126
BELLE FOURCHE
COLE CANYON 5910 7.5 5.3 142 14.4 9.3 155
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Basin Index (%) 142 155
CHEYENNE RIVER BASIN
BLIND PARK 6890 9.3 7.1 131 16.7 11.8 142
NORTH RAPID CREEK 6130 9.5 6.6 144 15.1 9.8 154
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Basin Index (%) 137 147
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.1 20.7 136 27.4 22.2 123
BLACKHALL MTN 9820 39.0 -M * -M -M *
COLUMBINE 9160 36.9 23.4 158 -M 25.2 *
DIVIDE PEAK 8880 21.7 19.8 110 24.0 21.2 113
JOE WRIGHT 10120 23.4 21.0 111 32.0 25.5 125
LAPRELE CREEK 8375 10.4 9.4 111 11.6 12.3 94
MED BOW 10500 6.5 -M * 35.6 -M *
NORTH FRENCH CREEK 10130 37.8 29.2 129 32.3 26.4 122
NEVER SUMMER 10280 25.3 20.3 125 19.3 -M *
OLD BATTLE 10000 35.6 31.1 114 36.2 34.6 105
RAWAH 9020 14.9 10.6 141 17.6 14.0 126
SAGE CREEK BASIN 7850 14.0 12.2 115 13.5 14.3 94
SAND LAKE 10050 35.4 28.6 124 32.6 24.5 133
SOUTH BRUSH CREEK 8440 13.6 12.0 113 15.7 15.0 105
TOWER 10500 53.0 45.6 116 -M 39.4 *
WEBBER SPRINGS 9250 27.7 23.1 120 29.7 26.4 112
WILLOW CREEK PASS 9540 15.1 12.1 125 14.9 13.3 112
ZIRKEL 9340 42.8 26.3 163 -M 28.1 *
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Basin Index (%) 126 115
SWEETWATER
DEER PARK 9700 -M 15.4 * 19.6 19.6 100
LARSEN CREEK 9000 14.4 11.7 123 16.1 -M *
SOUTH PASS 9040 16.9 15.1 112 15.4 17.2 90
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Basin Index (%) 117 95
LOWER N. PLATTE
CASPER MTN. 7900 19.6 14.3 137 16.5 14.7 112
LAPRELE CREEK 8375 10.4 9.4 111 11.6 12.3 94
RENO HILL 8400 19.6 14.0 140 21.1 15.2 139
WINDY PEAK 7900 9.6 7.8 123 12.1 10.4 116
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Basin Index (%) 130 117
LARAMIE RIVER
BROOKLYN LAKE 10240 32.3 21.5 150 30.7 20.9 147
CINNABAR PARK 9574 25.1 21.0 120 30.2 24.0 126
CROW CREEK 8330 7.2 7.0 103 11.6 10.7 108
DEADMAN HILL 10220 25.4 16.0 159 23.6 17.1 138
RAWAH 9020 14.9 10.6 141 17.6 14.0 126
ROACH 9700 22.1 16.4 135 24.6 19.0 129
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Basin Index (%) 137 131
S. PLATTE
BLACK MOUNTAIN 8920 12.9 -M * -M -M *
CROW CREEK 8330 7.2 7.0 103 11.6 10.7 108
DEADMAN HILL 10220 25.4 16.0 159 23.6 17.1 138
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Basin Index (%) 142 127
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.7 9.8 130 18.5 14.8 125
DIVIDE PEAK 8880 21.7 19.8 110 24.0 21.2 113
ELK RIVER 8700 23.0 19.2 120 23.1 19.8 117
LITTLE SNAKE RIVER 8915 33.5 24.9 135 35.9 29.2 123
OLD BATTLE 10000 35.6 31.1 114 36.2 34.6 105
SAGE CREEK BASIN 7850 14.0 12.2 115 13.5 14.3 94
SANDSTONE RS 8150 13.4 12.8 105 19.0 18.1 105
WHISKEY PARK 8950 43.1 27.2 158 41.2 27.6 149
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Basin Index (%) 125 118
UPPER GREEN RIVER
BIG SANDY OPENING 9080 16.1 12.5 129 15.2 13.0 117
BLIND BULL SUM 8650 36.6 23.1 158 23.4 19.2 122
EAST RIM DIVIDE 7930 17.8 10.2 175 15.6 11.6 134
ELKHART PARK G.S. 9400 17.8 12.2 146 16.8 13.1 128
GROS VENTRE SUMMIT 8750 14.7 12.9 114 14.8 12.7 117
GUNSIGHT PASS 9820 20.6 13.7 150 19.0 13.6 140
KENDALL R.S. 7740 22.8 11.5 198 23.1 14.0 165
LOOMIS PARK 8240 25.3 13.8 183 24.7 17.0 145
NEW FORK LAKE 8340 16.4 10.3 159 13.6 10.6 128
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 35.8 22.5 159 32.0 23.5 136
TRIPLE PEAK 8500 35.6 21.9 163 36.9 25.0 148
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Basin Index (%) 158 136
LOWER GREEN RIVER
BLACKS FORK JCT 8870 9.1 -M * 13.7 -M *
BUCK PASTURE 9700 15.8 -M * 17.0 -M *
EF BLACKS FORK GS 9360 11.2 -M * 10.4 -M *
HAMS FORK 7840 17.4 10.7 163 13.9 11.2 124
HEWINTA 9519 13.0 10.9 119 14.6 13.9 105
HICKERSON PARK 9145 8.4 7.9 106 9.2 10.2 90
HOLE-IN-ROCK 9150 6.8 7.0 97 9.8 9.7 101
INDIAN CREEK 9425 33.4 24.6 136 26.9 22.3 121
KELLEY R.S. 8180 19.2 14.8 130 21.2 17.8 119
SPIRIT LK 10235 10.9 -M * 14.3 -M *
STEEL CREEK PARK 10200 20.2 15.7 129 16.7 16.3 102
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Basin Index (%) 129 111
UPPER BEAR RIVER
BEAR RIVER RS 8777 10.3 -M * 12.7 -M *
BUG LAKE 7950 24.1 18.3 132 21.0 19.2 109
BURTS MILLER RANCH 8000 6.9 -M * 7.1 -M *
CHALK CREEK #1 8993 23.4 24.3 96 23.0 24.9 92
HAYDEN FORK 9212 17.9 15.4 116 21.1 20.9 101
KELLEY R.S. 8180 19.2 14.8 130 21.2 17.8 119
LILY LAKE 9156 14.4 12.6 114 15.4 17.0 91
MONTE CRISTO 8960 28.4 27.6 103 25.9 25.6 101
SALT RIVER SUMMIT 7760 18.7 12.9 145 19.4 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.