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 THURSDAY: MARCH 20 , 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 23.3 14.7 159 24.0 19.0 126
BLACK BEAR 8170 37.7 32.5 116 35.0 34.5 101
BLIND BULL SUM 8650 34.8 20.5 170 22.4 17.6 127
COTTONWOOD CREEK 7670 29.7 19.9 149 32.1 21.9 147
EAST RIM DIVIDE 7930 16.8 9.6 175 14.7 10.6 139
GRAND TARGHEE 9260 47.0 33.0 142 34.7 27.1 128
GRANITE CREEK 6770 23.1 15.0 154 23.2 18.2 127
GRASSY LAKE 7265 36.5 29.4 124 35.0 32.7 107
GROS VENTRE SUMMIT 8750 14.2 11.6 122 14.4 11.4 126
GUNSIGHT PASS 9820 19.6 12.1 162 18.0 12.1 149
LEWIS LAKE DIVIDE 7850 34.4 27.7 124 -M 32.1 *
PHILLIPS BENCH 8200 33.1 22.4 148 32.0 25.3 126
SALT RIVER SUMMIT 7760 17.5 12.0 146 18.5 15.0 123
SNAKE RIVER STATION 6920 20.2 15.2 133 23.1 20.4 113
SPRING CREEK DIVIDE 9000 33.8 21.1 160 31.2 21.5 145
THUMB DIVIDE 7980 16.3 14.1 116 15.0 16.5 91
TOGWOTEE PASS 9580 30.1 20.6 146 -M 21.8 *
TWO OCEAN PLATEAU 9240 36.7 24.0 153 -M 24.4 *
WILLOW CREEK 8380 37.8 25.4 149 36.9 29.9 123
YOUNTS PEAK 8350 -M 13.4 * -M 14.1 *
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Basin Index (%) 142 123
MADISON-GALLATIN
BLACK BEAR 8170 37.7 32.5 116 35.0 34.5 101
CANYON 7870 13.5 11.8 114 15.0 14.6 103
MADISON PLATEAU 7750 21.6 20.1 107 21.7 23.7 92
WEST YELLOWSTONE 6700 12.5 9.9 126 13.8 12.8 108
WHISKEY CREEK 6800 15.5 14.2 109 18.1 18.2 99
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Basin Index (%) 114 100
YELLOWSTONE
BEARTOOTH LAKE 9360 28.9 19.3 150 26.2 17.7 148
BURNT MTN 5880 9.5 4.6 207 16.7 10.9 153
CANYON 7870 13.5 11.8 114 15.0 14.6 103
COLE CREEK 7850 18.7 12.0 156 13.2 10.7 123
EVENING STAR 9200 35.6 22.2 160 35.0 24.4 143
FISHER CREEK 9100 40.0 28.2 142 35.1 28.5 123
NORTHEAST ENTRANCE 7350 14.2 9.0 158 14.1 11.0 128
PARKER PEAK 9400 28.2 17.6 160 22.1 15.7 141
SYLVAN LAKE 8420 21.8 18.2 120 24.8 20.0 124
THUMB DIVIDE 7980 16.3 14.1 116 15.0 16.5 91
TWO OCEAN PLATEAU 9240 36.7 24.0 153 -M 24.4 *
WHITE MILL 8700 30.8 19.9 155 26.1 21.2 123
WOLVERINE 7650 14.9 8.9 167 15.4 11.0 140
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Basin Index (%) 147 128
WIND RIVER
BURROUGHS CREEK 8750 -M 12.3 * -M 14.3 *
CASTLE CREEK 8400 10.2 -M * 12.0 -M *
COLD SPRINGS 9630 9.5 6.3 151 12.8 8.6 149
DEER PARK 9700 15.7 13.3 118 17.9 17.2 104
HOBBS PARK 10100 14.4 11.8 122 12.7 11.1 114
KIRWIN 9550 17.7 8.4 211 16.3 10.0 163
LITTLE WARM 9370 13.9 9.2 151 16.1 11.2 144
OWL CREEK 8975 6.9 4.6 150 6.7 5.0 134
SOUTH PASS 9040 15.6 13.8 113 14.4 15.4 94
ST. LAWRENCE ALT 8620 4.8 6.1 79 8.0 7.5 107
TOGWOTEE PASS 9580 30.1 20.6 146 -M 21.8 *
TOWNSEND CREEK 8700 7.6 8.2 93 8.5 10.1 84
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Basin Index (%) 133 118
BIGHORN BASIN
BALD MTN. 9380 22.6 16.5 137 17.3 14.9 116
BEAR TRAP MEADOW 8200 9.7 5.1 190 9.7 7.1 137
BONE SPRINGS DIV 9350 19.1 14.1 135 14.9 13.4 111
GRAVE SPRINGS 8550 11.2 8.1 138 11.2 9.0 124
KIRWIN 9550 17.7 8.4 211 16.3 10.0 163
MARQUETTE 8760 12.2 -M * 11.4 -M *
MIDDLE POWDER 7760 15.0 9.8 153 12.2 10.0 122
OWL CREEK 8975 6.9 4.6 150 6.7 5.0 134
POWDER RIVER PASS 9480 14.3 9.2 155 15.1 10.8 140
SHELL CREEK 9580 17.7 12.8 138 15.1 11.9 127
TIMBER CREEK 7950 6.0 4.2 143 7.6 6.1 125
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Basin Index (%) 151 128
SHOSHONE RIVER
BLACKWATER 9780 29.3 20.8 141 26.3 18.1 145
EVENING STAR 9200 35.6 22.2 160 35.0 24.4 143
MARQUETTE 8760 12.2 -M * 11.4 -M *
SYLVAN ROAD 7120 14.6 10.4 140 19.2 15.1 127
YOUNTS PEAK 8350 -M 13.4 * -M 14.1 *
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Basin Index (%) 149 140
POWDER RIVER
BEAR TRAP MEADOW 8200 9.7 5.1 190 9.7 7.1 137
CLOUD PEAK RESERVOIR 9860 19.1 12.9 148 16.7 11.2 149
GRAVE SPRINGS 8550 11.2 8.1 138 11.2 9.0 124
HANSEN SAWMILL 8360 8.9 5.7 156 10.9 7.1 154
MIDDLE POWDER 7760 15.0 9.8 153 12.2 10.0 122
POWDER RIVER PASS 9480 14.3 9.2 155 15.1 10.8 140
SOLDIER PARK 8720 11.6 -M * 10.4 -M *
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Basin Index (%) 154 137
TONGUE RIVER
BIG GOOSE 7990 11.3 7.8 145 13.4 9.2 146
BONE SPRINGS DIV 9350 19.1 14.1 135 14.9 13.4 111
BURGESS JUNCTION 7880 13.8 9.5 145 14.4 10.5 137
DOME LAKE 8880 14.0 10.2 137 13.0 11.5 113
LITTLE GOOSE 8870 12.9 -M * 15.5 -M *
SUCKER CREEK 8880 16.3 10.9 150 17.5 12.2 143
TIE CREEK 6870 8.7 5.0 174 13.7 9.8 140
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Basin Index (%) 145 130
BELLE FOURCHE
COLE CANYON 5910 7.6 5.5 138 13.0 7.9 165
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Basin Index (%) 138 165
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.9 7.2 124 15.7 10.5 150
NORTH RAPID CREEK 6130 9.3 6.5 143 14.5 8.6 169
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Basin Index (%) 133 158
UPPER N. PLATTE
ARAPAHO RIDGE 10960 24.9 18.0 138 24.7 19.7 125
BLACKHALL MTN 9820 34.8 -M * 28.0 -M *
COLUMBINE 9160 32.9 22.0 150 -M 22.9 *
DIVIDE PEAK 8880 18.2 17.6 103 21.0 19.1 110
JOE WRIGHT 10120 21.2 19.1 111 29.5 22.9 129
LAPRELE CREEK 8375 9.0 9.1 99 10.5 10.8 97
MED BOW 10500 10.3 -M * 34.2 -M *
NORTH FRENCH CREEK 10130 32.8 25.2 130 32.1 23.7 135
NEVER SUMMER 10280 22.7 17.8 128 16.9 -M *
OLD BATTLE 10000 31.3 26.3 119 34.1 31.4 109
RAWAH 9020 13.7 9.4 146 16.0 12.2 131
SAGE CREEK BASIN 7850 12.2 11.5 106 11.5 12.9 89
SAND LAKE 10050 31.7 24.6 129 30.4 21.7 140
SOUTH BRUSH CREEK 8440 11.9 11.1 107 13.8 13.3 104
TOWER 10500 47.7 40.0 119 -M 35.8 *
WEBBER SPRINGS 9250 24.7 21.0 118 26.6 23.9 111
WILLOW CREEK PASS 9540 13.5 10.9 124 13.4 11.7 115
ZIRKEL 9340 39.0 25.7 152 -M 25.5 *
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Basin Index (%) 125 118
SWEETWATER
DEER PARK 9700 15.7 13.3 118 17.9 17.2 104
LARSEN CREEK 9000 13.0 11.2 116 15.0 -M *
SOUTH PASS 9040 15.6 13.8 113 14.4 15.4 94
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Basin Index (%) 116 99
LOWER N. PLATTE
CASPER MTN. 7900 16.9 12.2 139 14.7 12.8 115
LAPRELE CREEK 8375 9.0 9.1 99 10.5 10.8 97
RENO HILL 8400 17.0 11.9 143 17.3 13.0 133
WINDY PEAK 7900 8.8 7.1 124 11.2 9.1 123
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Basin Index (%) 128 118
LARAMIE RIVER
BROOKLYN LAKE 10240 29.6 17.7 167 26.7 18.5 144
CINNABAR PARK 9574 22.3 18.0 124 20.8 21.4 97
CROW CREEK 8330 6.9 6.9 100 10.9 8.9 122
DEADMAN HILL 10220 23.2 13.9 167 20.7 15.0 138
RAWAH 9020 13.7 9.4 146 16.0 12.2 131
ROACH 9700 19.7 14.0 141 22.1 16.9 131
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Basin Index (%) 144 126
S. PLATTE
BLACK MOUNTAIN 8920 11.8 -M * -M -M *
CROW CREEK 8330 6.9 6.9 100 10.9 8.9 122
DEADMAN HILL 10220 23.2 13.9 167 20.7 15.0 138
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Basin Index (%) 145 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.2 11.4 107 15.8 13.6 116
DIVIDE PEAK 8880 18.2 17.6 103 21.0 19.1 110
ELK RIVER 8700 20.6 17.4 118 20.5 18.0 114
LITTLE SNAKE RIVER 8915 29.4 21.1 139 32.6 26.5 123
OLD BATTLE 10000 31.3 26.3 119 34.1 31.4 109
SAGE CREEK BASIN 7850 12.2 11.5 106 11.5 12.9 89
SANDSTONE RS 8150 11.5 12.2 94 16.7 16.7 100
WHISKEY PARK 8950 38.2 24.3 157 35.0 25.0 140
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Basin Index (%) 122 115
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.9 11.7 127 14.1 11.8 119
BLIND BULL SUM 8650 34.8 20.5 170 22.4 17.6 127
EAST RIM DIVIDE 7930 16.8 9.6 175 14.7 10.6 139
ELKHART PARK G.S. 9400 16.9 10.7 158 15.8 11.8 134
GROS VENTRE SUMMIT 8750 14.2 11.6 122 14.4 11.4 126
GUNSIGHT PASS 9820 19.6 12.1 162 18.0 12.1 149
KENDALL R.S. 7740 22.1 11.3 196 22.1 13.0 170
LOOMIS PARK 8240 23.8 13.3 179 23.4 15.6 150
NEW FORK LAKE 8340 15.5 9.3 167 13.2 9.7 136
POCKET CREEK 9360 12.4 -M * 12.2 -M *
SNIDER BASIN 8060 19.5 11.0 177 18.7 12.8 146
SPRING CREEK DIVIDE 9000 33.8 21.1 160 31.2 21.5 145
TRIPLE PEAK 8500 34.0 19.5 174 35.3 22.7 156
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Basin Index (%) 164 143
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.1 -M * 12.2 -M *
BUCK PASTURE 9700 13.6 -M * 15.1 -M *
EF BLACKS FORK GS 9360 9.4 -M * 9.4 -M *
HAMS FORK 7840 15.6 10.3 151 13.2 10.2 129
HEWINTA 9519 10.1 9.9 102 12.7 12.4 102
HICKERSON PARK 9145 7.9 6.6 120 8.0 8.9 90
HOLE-IN-ROCK 9150 5.9 6.6 89 8.4 8.3 101
INDIAN CREEK 9425 30.9 21.3 145 25.1 20.2 124
KELLEY R.S. 8180 18.2 13.4 136 19.8 16.2 122
SPIRIT LK 10235 8.8 -M * 12.0 -M *
STEEL CREEK PARK 10200 17.0 13.4 127 14.7 14.3 103
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Basin Index (%) 130 113
UPPER BEAR RIVER
BEAR RIVER RS 8777 10.3 -M * 11.2 -M *
BUG LAKE 7950 21.7 16.7 130 18.8 17.4 108
BURTS MILLER RANCH 8000 7.7 -M * 6.2 -M *
CHALK CREEK #1 8993 20.9 21.2 99 20.7 22.2 93
HAYDEN FORK 9212 15.5 14.3 108 18.7 18.6 101
KELLEY R.S. 8180 18.2 13.4 136 19.8 16.2 122
LILY LAKE 9156 13.0 11.4 114 13.9 15.0 93
MONTE CRISTO 8960 25.4 24.4 104 23.2 23.1 100
SALT RIVER SUMMIT 7760 17.5 12.0 146 18.5 15.0 123
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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.