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 25 , 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 23.1 14.6 158 24.0 19.4 124
BLACK BEAR 8170 37.5 33.9 111 34.6 35.3 98
BLIND BULL SUM 8650 34.7 21.1 164 22.4 18.1 124
COTTONWOOD CREEK 7670 29.5 20.5 144 32.2 22.7 142
EAST RIM DIVIDE 7930 16.9 9.7 174 14.8 10.9 136
GRAND TARGHEE 9260 46.2 33.9 136 34.8 27.7 126
GRANITE CREEK 6770 23.2 14.8 157 23.2 18.5 125
GRASSY LAKE 7265 36.7 30.3 121 34.9 33.4 104
GROS VENTRE SUMMIT 8750 14.5 12.0 121 14.4 11.8 122
GUNSIGHT PASS 9820 19.6 12.5 157 18.0 12.5 144
LEWIS LAKE DIVIDE 7850 34.0 28.6 119 -M 32.9 *
PHILLIPS BENCH 8200 33.0 23.1 143 32.1 25.9 124
SALT RIVER SUMMIT 7760 17.4 12.3 141 18.4 15.4 119
SNAKE RIVER STATION 6920 -M 15.6 * -M 20.9 *
SPRING CREEK DIVIDE 9000 34.0 21.9 155 31.3 22.0 142
THUMB DIVIDE 7980 16.3 14.8 110 15.0 16.9 89
TOGWOTEE PASS 9580 30.1 21.1 143 -M 22.3 *
TWO OCEAN PLATEAU 9240 36.7 24.6 149 -M 25.1 *
WILLOW CREEK 8380 38.7 25.5 152 38.4 30.7 125
YOUNTS PEAK 8350 -M 13.7 * -M 14.5 *
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Basin Index (%) 139 121
MADISON-GALLATIN
BLACK BEAR 8170 37.5 33.9 111 34.6 35.3 98
CANYON 7870 13.4 12.0 112 15.0 14.9 101
MADISON PLATEAU 7750 21.5 20.6 104 21.7 24.2 90
WEST YELLOWSTONE 6700 12.7 10.0 127 13.9 12.9 108
WHISKEY CREEK 6800 15.5 14.4 108 18.2 18.6 98
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Basin Index (%) 111 98
YELLOWSTONE
BEARTOOTH LAKE 9360 30.2 20.1 150 26.6 18.1 147
BURNT MTN 5880 9.5 4.8 198 16.9 11.2 151
CANYON 7870 13.4 12.0 112 15.0 14.9 101
COLE CREEK 7850 18.9 12.5 151 13.3 11.2 119
EVENING STAR 9200 35.8 23.1 155 35.1 25.0 140
FISHER CREEK 9100 39.9 28.6 140 35.1 29.3 120
NORTHEAST ENTRANCE 7350 14.2 9.5 149 14.2 11.2 127
PARKER PEAK 9400 28.4 18.0 158 22.2 16.1 138
SYLVAN LAKE 8420 21.8 18.6 117 24.8 20.4 122
THUMB DIVIDE 7980 16.3 14.8 110 15.0 16.9 89
TWO OCEAN PLATEAU 9240 36.7 24.6 149 -M 25.1 *
WHITE MILL 8700 30.9 20.8 149 26.5 21.8 122
WOLVERINE 7650 14.2 8.9 160 15.4 11.2 138
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Basin Index (%) 143 125
WIND RIVER
BURROUGHS CREEK 8750 -M 12.7 * -M 14.6 *
CASTLE CREEK 8400 10.3 -M * 12.1 -M *
COLD SPRINGS 9630 9.3 6.7 139 12.9 8.8 147
DEER PARK 9700 15.8 14.1 112 18.0 17.6 102
HOBBS PARK 10100 14.4 12.5 115 12.7 11.5 110
KIRWIN 9550 17.9 8.7 206 16.4 10.3 159
LITTLE WARM 9370 14.0 9.7 144 16.3 11.5 142
OWL CREEK 8975 7.1 4.7 151 7.0 5.2 135
SOUTH PASS 9040 15.7 14.4 109 14.6 15.8 92
ST. LAWRENCE ALT 8620 4.5 6.4 70 8.1 7.8 104
TOGWOTEE PASS 9580 30.1 21.1 143 -M 22.3 *
TOWNSEND CREEK 8700 7.5 8.6 87 8.5 10.4 82
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Basin Index (%) 128 116
BIGHORN BASIN
BALD MTN. 9380 23.1 16.8 138 17.6 15.3 115
BEAR TRAP MEADOW 8200 10.1 5.2 194 10.1 7.4 136
BONE SPRINGS DIV 9350 19.5 14.3 136 15.2 13.8 110
GRAVE SPRINGS 8550 11.5 8.3 139 11.4 9.3 123
KIRWIN 9550 17.9 8.7 206 16.4 10.3 159
MARQUETTE 8760 13.0 -M * 11.7 -M *
MIDDLE POWDER 7760 15.3 10.4 147 12.4 10.4 119
OWL CREEK 8975 7.1 4.7 151 7.0 5.2 135
POWDER RIVER PASS 9480 14.7 9.5 155 15.5 11.3 137
SHELL CREEK 9580 18.0 13.3 135 15.4 12.3 125
TIMBER CREEK 7950 6.2 4.2 148 7.8 6.4 122
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Basin Index (%) 150 127
SHOSHONE RIVER
BLACKWATER 9780 29.6 21.1 140 26.6 18.6 143
EVENING STAR 9200 35.8 23.1 155 35.1 25.0 140
MARQUETTE 8760 13.0 -M * 11.7 -M *
SYLVAN ROAD 7120 14.7 10.7 137 19.2 15.5 124
YOUNTS PEAK 8350 -M 13.7 * -M 14.5 *
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Basin Index (%) 146 137
POWDER RIVER
BEAR TRAP MEADOW 8200 10.1 5.2 194 10.1 7.4 136
CLOUD PEAK RESERVOIR 9860 19.6 13.4 146 17.1 11.7 146
GRAVE SPRINGS 8550 11.5 8.3 139 11.4 9.3 123
HANSEN SAWMILL 8360 9.1 6.0 152 11.2 7.5 149
MIDDLE POWDER 7760 15.3 10.4 147 12.4 10.4 119
POWDER RIVER PASS 9480 14.7 9.5 155 15.5 11.3 137
SOLDIER PARK 8720 12.1 -M * 10.6 -M *
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Basin Index (%) 152 135
TONGUE RIVER
BIG GOOSE 7990 11.5 8.1 142 13.6 9.6 142
BONE SPRINGS DIV 9350 19.5 14.3 136 15.2 13.8 110
BURGESS JUNCTION 7880 14.2 10.1 141 14.9 10.8 138
DOME LAKE 8880 14.4 10.7 135 13.2 12.0 110
LITTLE GOOSE 8870 13.1 -M * 15.6 -M *
SUCKER CREEK 8880 16.7 11.1 150 17.8 12.7 140
TIE CREEK 6870 8.8 5.2 169 13.9 10.0 139
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Basin Index (%) 143 129
BELLE FOURCHE
COLE CANYON 5910 7.4 5.7 130 13.6 8.2 166
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Basin Index (%) 130 166
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.7 7.0 124 15.9 10.7 149
NORTH RAPID CREEK 6130 9.2 6.7 137 14.5 8.8 165
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Basin Index (%) 131 156
UPPER N. PLATTE
ARAPAHO RIDGE 10960 25.3 18.5 137 25.1 20.2 124
BLACKHALL MTN 9820 35.2 -M * 28.0 -M *
COLUMBINE 9160 33.2 22.0 151 -M 23.5 *
DIVIDE PEAK 8880 18.1 18.3 99 20.8 19.6 106
JOE WRIGHT 10120 21.4 19.4 110 29.8 23.5 127
LAPRELE CREEK 8375 9.1 9.4 97 10.6 11.2 95
MED BOW 10500 8.0 -M * 34.3 -M *
NORTH FRENCH CREEK 10130 33.1 26.6 124 32.3 24.5 132
NEVER SUMMER 10280 23.4 18.5 126 17.2 -M *
OLD BATTLE 10000 31.5 27.6 114 34.6 32.2 107
RAWAH 9020 14.3 9.8 146 16.5 12.7 130
SAGE CREEK BASIN 7850 12.3 11.9 103 11.5 13.2 87
SAND LAKE 10050 31.7 25.7 123 30.5 22.4 136
SOUTH BRUSH CREEK 8440 12.0 11.6 103 13.9 13.8 101
TOWER 10500 48.0 41.3 116 -M 36.7 *
WEBBER SPRINGS 9250 24.9 21.8 114 26.8 24.5 109
WILLOW CREEK PASS 9540 14.0 11.2 125 14.0 12.0 117
ZIRKEL 9340 39.4 25.6 154 -M 26.1 *
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Basin Index (%) 123 116
SWEETWATER
DEER PARK 9700 15.8 14.1 112 18.0 17.6 102
LARSEN CREEK 9000 13.1 11.6 113 15.1 -M *
SOUTH PASS 9040 15.7 14.4 109 14.6 15.8 92
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Basin Index (%) 111 98
LOWER N. PLATTE
CASPER MTN. 7900 17.4 12.7 137 15.0 13.3 113
LAPRELE CREEK 8375 9.1 9.4 97 10.6 11.2 95
RENO HILL 8400 17.1 12.4 138 19.0 13.6 140
WINDY PEAK 7900 8.9 7.5 119 11.4 9.4 121
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Basin Index (%) 125 118
LARAMIE RIVER
BROOKLYN LAKE 10240 29.7 18.3 162 26.9 19.1 141
CINNABAR PARK 9574 22.2 19.2 116 27.8 22.0 126
CROW CREEK 8330 7.1 6.9 103 11.1 9.6 116
DEADMAN HILL 10220 23.7 14.4 165 22.4 15.5 145
RAWAH 9020 14.3 9.8 146 16.5 12.7 130
ROACH 9700 19.9 14.4 138 22.4 17.4 129
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Basin Index (%) 141 132
S. PLATTE
BLACK MOUNTAIN 8920 12.1 -M * -M -M *
CROW CREEK 8330 7.1 6.9 103 11.1 9.6 116
DEADMAN HILL 10220 23.7 14.4 165 22.4 15.5 145
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Basin Index (%) 145 133
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.5 11.2 112 15.8 13.9 114
DIVIDE PEAK 8880 18.1 18.3 99 20.8 19.6 106
ELK RIVER 8700 21.2 17.6 120 20.7 18.4 112
LITTLE SNAKE RIVER 8915 29.8 21.6 138 32.7 27.1 121
OLD BATTLE 10000 31.5 27.6 114 34.6 32.2 107
SAGE CREEK BASIN 7850 12.3 11.9 103 11.5 13.2 87
SANDSTONE RS 8150 11.3 12.9 88 16.7 17.1 98
WHISKEY PARK 8950 38.5 24.6 157 36.7 25.7 143
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Basin Index (%) 120 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.1 11.9 127 14.2 12.1 117
BLIND BULL SUM 8650 34.7 21.1 164 22.4 18.1 124
EAST RIM DIVIDE 7930 16.9 9.7 174 14.8 10.9 136
ELKHART PARK G.S. 9400 16.9 11.2 151 15.9 12.2 130
GROS VENTRE SUMMIT 8750 14.5 12.0 121 14.4 11.8 122
GUNSIGHT PASS 9820 19.6 12.5 157 18.0 12.5 144
KENDALL R.S. 7740 -M 11.4 * 22.2 13.2 168
LOOMIS PARK 8240 23.9 14.0 171 23.5 16.0 147
NEW FORK LAKE 8340 15.5 9.7 160 13.3 10.0 133
POCKET CREEK 9360 12.3 -M * 12.2 -M *
SNIDER BASIN 8060 19.5 11.3 173 18.8 13.1 144
SPRING CREEK DIVIDE 9000 34.0 21.9 155 31.3 22.0 142
TRIPLE PEAK 8500 34.1 20.3 168 35.4 23.4 151
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Basin Index (%) 157 139
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.1 -M * 12.2 -M *
BUCK PASTURE 9700 14.1 -M * 15.2 -M *
EF BLACKS FORK GS 9360 9.3 -M * 9.3 -M *
HAMS FORK 7840 15.9 10.5 151 13.2 10.5 126
HEWINTA 9519 10.4 9.9 105 12.7 12.7 100
HICKERSON PARK 9145 7.8 6.9 113 8.3 9.2 90
HOLE-IN-ROCK 9150 6.2 6.9 90 8.4 8.6 98
INDIAN CREEK 9425 31.2 22.2 141 25.2 20.7 122
KELLEY R.S. 8180 18.0 14.1 128 19.9 16.7 119
SPIRIT LK 10235 9.2 -M * 12.2 -M *
STEEL CREEK PARK 10200 17.0 13.8 123 14.8 14.7 101
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Basin Index (%) 126 110
UPPER BEAR RIVER
BEAR RIVER RS 8777 9.0 -M * 11.3 -M *
BUG LAKE 7950 21.6 17.3 125 18.7 17.8 105
BURTS MILLER RANCH 8000 7.0 -M * 6.4 -M *
CHALK CREEK #1 8993 20.9 22.1 95 20.7 22.9 90
HAYDEN FORK 9212 15.3 14.5 106 18.7 19.1 98
KELLEY R.S. 8180 18.0 14.1 128 19.9 16.7 119
LILY LAKE 9156 13.2 11.6 114 14.0 15.5 90
MONTE CRISTO 8960 25.7 25.1 102 23.3 23.7 98
SALT RIVER SUMMIT 7760 17.4 12.3 141 18.4 15.4 119
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Basin Index (%) 113 102
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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.