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: MARCH 23 , 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 14.6 160 24.0 19.2 125
BLACK BEAR 8170 37.4 33.1 113 34.4 34.9 99
BLIND BULL SUM 8650 34.7 20.8 167 22.4 17.9 125
COTTONWOOD CREEK 7670 29.5 20.3 145 32.1 22.3 144
EAST RIM DIVIDE 7930 16.9 9.6 176 14.7 10.7 137
GRAND TARGHEE 9260 46.2 33.4 138 34.7 27.4 127
GRANITE CREEK 6770 23.2 14.7 158 23.3 18.3 127
GRASSY LAKE 7265 36.5 29.7 123 34.8 33.1 105
GROS VENTRE SUMMIT 8750 14.3 11.8 121 14.4 11.6 124
GUNSIGHT PASS 9820 19.7 12.3 160 17.9 12.2 147
LEWIS LAKE DIVIDE 7850 34.1 28.2 121 -M 32.5 *
PHILLIPS BENCH 8200 32.9 22.8 144 32.0 25.6 125
SALT RIVER SUMMIT 7760 17.3 12.2 142 18.4 15.2 121
SNAKE RIVER STATION 6920 20.5 15.5 132 23.1 20.6 112
SPRING CREEK DIVIDE 9000 33.8 21.6 156 31.2 21.8 143
THUMB DIVIDE 7980 16.3 14.4 113 15.0 16.7 90
TOGWOTEE PASS 9580 30.0 20.9 144 -M 22.0 *
TWO OCEAN PLATEAU 9240 36.6 24.4 150 -M 24.8 *
WILLOW CREEK 8380 38.1 25.3 151 38.4 30.4 126
YOUNTS PEAK 8350 -M 13.6 * -M 14.3 *
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Basin Index (%) 140 122
MADISON-GALLATIN
BLACK BEAR 8170 37.4 33.1 113 34.4 34.9 99
CANYON 7870 13.5 11.8 114 14.9 14.7 101
MADISON PLATEAU 7750 21.5 20.4 105 21.7 23.9 91
WEST YELLOWSTONE 6700 12.7 10.0 127 13.8 12.8 108
WHISKEY CREEK 6800 15.4 14.4 107 18.2 18.4 99
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Basin Index (%) 112 98
YELLOWSTONE
BEARTOOTH LAKE 9360 28.9 19.8 146 -M 18.0 *
BURNT MTN 5880 9.4 4.7 200 16.8 11.0 153
CANYON 7870 13.5 11.8 114 14.9 14.7 101
COLE CREEK 7850 18.6 12.3 151 13.1 11.0 119
EVENING STAR 9200 35.6 22.7 157 -M 24.8 *
FISHER CREEK 9100 39.8 28.4 140 35.1 29.0 121
NORTHEAST ENTRANCE 7350 14.2 9.3 153 14.1 11.1 127
PARKER PEAK 9400 28.2 17.9 158 21.6 15.9 136
SYLVAN LAKE 8420 21.7 18.4 118 24.8 20.2 123
THUMB DIVIDE 7980 16.3 14.4 113 15.0 16.7 90
TWO OCEAN PLATEAU 9240 36.6 24.4 150 -M 24.8 *
WHITE MILL 8700 30.8 20.4 151 26.3 21.5 122
WOLVERINE 7650 14.0 8.9 157 15.2 11.1 137
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Basin Index (%) 144 121
WIND RIVER
BURROUGHS CREEK 8750 -M 12.5 * -M 14.4 *
CASTLE CREEK 8400 10.2 -M * 11.8 -M *
COLD SPRINGS 9630 9.3 6.6 141 12.7 8.7 146
DEER PARK 9700 -M 13.9 * 17.9 17.4 103
HOBBS PARK 10100 14.4 12.2 118 12.6 11.3 112
KIRWIN 9550 17.7 8.5 208 16.2 10.2 159
LITTLE WARM 9370 13.8 9.4 147 16.1 11.3 142
OWL CREEK 8975 7.1 4.7 151 6.8 5.1 133
SOUTH PASS 9040 15.6 14.3 109 14.4 15.5 93
ST. LAWRENCE ALT 8620 4.4 6.4 69 7.5 7.7 97
TOGWOTEE PASS 9580 30.0 20.9 144 -M 22.0 *
TOWNSEND CREEK 8700 7.3 8.5 86 8.2 10.2 80
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Basin Index (%) 131 115
BIGHORN BASIN
BALD MTN. 9380 22.9 16.6 138 17.4 15.1 115
BEAR TRAP MEADOW 8200 9.7 5.2 187 9.8 7.3 134
BONE SPRINGS DIV 9350 19.4 14.2 137 14.9 13.6 110
GRAVE SPRINGS 8550 11.2 8.3 135 11.2 9.2 122
KIRWIN 9550 17.7 8.5 208 16.2 10.2 159
MARQUETTE 8760 12.8 -M * 11.6 -M *
MIDDLE POWDER 7760 15.0 10.2 147 12.2 10.3 118
OWL CREEK 8975 7.1 4.7 151 6.8 5.1 133
POWDER RIVER PASS 9480 14.5 9.4 154 15.2 11.1 137
SHELL CREEK 9580 17.9 13.1 137 15.3 12.1 126
TIMBER CREEK 7950 6.0 4.1 146 7.6 6.3 121
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Basin Index (%) 150 126
SHOSHONE RIVER
BLACKWATER 9780 29.5 21.0 140 26.4 18.4 143
EVENING STAR 9200 35.6 22.7 157 -M 24.8 *
MARQUETTE 8760 12.8 -M * 11.6 -M *
SYLVAN ROAD 7120 14.9 10.6 141 19.2 15.3 125
YOUNTS PEAK 8350 -M 13.6 * -M 14.3 *
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Basin Index (%) 147 135*
POWDER RIVER
BEAR TRAP MEADOW 8200 9.7 5.2 187 9.8 7.3 134
CLOUD PEAK RESERVOIR 9860 19.3 13.2 146 16.9 11.5 147
GRAVE SPRINGS 8550 11.2 8.3 135 11.2 9.2 122
HANSEN SAWMILL 8360 9.1 5.8 157 11.1 7.4 150
MIDDLE POWDER 7760 15.0 10.2 147 12.2 10.3 118
POWDER RIVER PASS 9480 14.5 9.4 154 15.2 11.1 137
SOLDIER PARK 8720 11.8 -M * 10.5 -M *
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Basin Index (%) 151 135
TONGUE RIVER
BIG GOOSE 7990 11.3 8.0 141 13.5 9.4 144
BONE SPRINGS DIV 9350 19.4 14.2 137 14.9 13.6 110
BURGESS JUNCTION 7880 14.1 9.8 144 14.6 10.7 136
DOME LAKE 8880 14.2 10.5 135 13.1 11.7 112
LITTLE GOOSE 8870 12.9 -M * 15.4 -M *
SUCKER CREEK 8880 16.5 11.0 150 17.6 12.5 141
TIE CREEK 6870 8.7 5.1 171 13.6 9.9 137
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Basin Index (%) 144 129
BELLE FOURCHE
COLE CANYON 5910 7.4 5.6 132 13.4 8.0 168
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Basin Index (%) 132 168
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.8 7.1 124 15.8 10.6 149
NORTH RAPID CREEK 6130 9.3 6.6 141 14.2 8.7 163
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Basin Index (%) 132 155
UPPER N. PLATTE
ARAPAHO RIDGE 10960 25.2 18.2 138 24.7 19.9 124
BLACKHALL MTN 9820 35.0 -M * 27.7 -M *
COLUMBINE 9160 33.0 22.1 149 -M 23.3 *
DIVIDE PEAK 8880 18.1 18.0 101 20.9 19.4 108
JOE WRIGHT 10120 21.6 19.3 112 29.5 23.2 127
LAPRELE CREEK 8375 8.7 9.3 94 10.4 11.0 95
MED BOW 10500 9.0 -M * 34.2 -M *
NORTH FRENCH CREEK 10130 33.1 26.1 127 32.2 24.0 134
NEVER SUMMER 10280 23.2 18.2 127 17.2 -M *
OLD BATTLE 10000 31.4 27.1 116 34.4 31.9 108
RAWAH 9020 14.0 9.7 144 16.5 12.4 133
SAGE CREEK BASIN 7850 12.3 11.6 106 11.5 13.0 88
SAND LAKE 10050 31.6 25.3 125 30.4 22.0 138
SOUTH BRUSH CREEK 8440 12.0 11.3 106 13.8 13.6 101
TOWER 10500 48.2 40.7 118 -M 36.2 *
WEBBER SPRINGS 9250 24.8 21.5 115 26.7 24.2 110
WILLOW CREEK PASS 9540 14.0 11.1 126 13.7 11.9 115
ZIRKEL 9340 39.4 25.5 155 -M 25.6 *
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Basin Index (%) 124 117
SWEETWATER
DEER PARK 9700 -M 13.9 * 17.9 17.4 103
LARSEN CREEK 9000 13.0 11.4 114 15.0 -M *
SOUTH PASS 9040 15.6 14.3 109 14.4 15.5 93
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Basin Index (%) 111 98
LOWER N. PLATTE
CASPER MTN. 7900 17.1 12.6 136 14.7 13.0 113
LAPRELE CREEK 8375 8.7 9.3 94 10.4 11.0 95
RENO HILL 8400 16.9 12.3 137 18.8 13.2 142
WINDY PEAK 7900 8.7 7.4 118 11.3 9.2 123
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Basin Index (%) 124 119
LARAMIE RIVER
BROOKLYN LAKE 10240 29.7 18.0 165 26.8 18.8 143
CINNABAR PARK 9574 22.0 18.7 118 27.6 21.6 128
CROW CREEK 8330 7.1 6.9 103 11.0 9.1 121
DEADMAN HILL 10220 23.7 14.2 167 22.1 15.2 145
RAWAH 9020 14.0 9.7 144 16.5 12.4 133
ROACH 9700 19.9 14.3 139 22.3 17.1 130
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Basin Index (%) 142 134
S. PLATTE
BLACK MOUNTAIN 8920 12.0 -M * -M -M *
CROW CREEK 8330 7.1 6.9 103 11.0 9.1 121
DEADMAN HILL 10220 23.7 14.2 167 22.1 15.2 145
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Basin Index (%) 146 136
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.2 11.3 117 15.7 13.7 115
DIVIDE PEAK 8880 18.1 18.0 101 20.9 19.4 108
ELK RIVER 8700 21.0 17.5 120 20.7 18.2 114
LITTLE SNAKE RIVER 8915 29.5 21.4 138 32.6 26.8 122
OLD BATTLE 10000 31.4 27.1 116 34.4 31.9 108
SAGE CREEK BASIN 7850 12.3 11.6 106 11.5 13.0 88
SANDSTONE RS 8150 11.4 12.7 90 16.7 16.9 99
WHISKEY PARK 8950 38.3 24.5 156 36.3 25.3 143
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Basin Index (%) 122 114
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.9 11.9 125 14.1 12.0 118
BLIND BULL SUM 8650 34.7 20.8 167 22.4 17.9 125
EAST RIM DIVIDE 7930 16.9 9.6 176 14.7 10.7 137
ELKHART PARK G.S. 9400 16.9 11.0 154 15.9 12.0 132
GROS VENTRE SUMMIT 8750 14.3 11.8 121 14.4 11.6 124
GUNSIGHT PASS 9820 19.7 12.3 160 17.9 12.2 147
KENDALL R.S. 7740 22.4 11.4 196 22.2 13.0 171
LOOMIS PARK 8240 24.0 13.7 175 23.4 15.7 149
NEW FORK LAKE 8340 15.5 9.5 163 13.2 9.8 135
POCKET CREEK 9360 12.3 -M * 12.1 -M *
SNIDER BASIN 8060 19.6 11.2 175 18.7 12.9 145
SPRING CREEK DIVIDE 9000 33.8 21.6 156 31.2 21.8 143
TRIPLE PEAK 8500 33.9 20.0 170 35.3 23.1 153
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Basin Index (%) 162 141
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.0 -M * 12.2 -M *
BUCK PASTURE 9700 14.0 -M * 15.2 -M *
EF BLACKS FORK GS 9360 9.3 -M * 9.3 -M *
HAMS FORK 7840 16.1 10.5 153 13.1 10.3 127
HEWINTA 9519 10.4 9.9 105 12.6 12.6 100
HICKERSON PARK 9145 8.1 6.8 119 8.0 9.1 88
HOLE-IN-ROCK 9150 6.0 6.8 88 8.3 8.5 98
INDIAN CREEK 9425 31.1 21.8 143 25.1 20.5 122
KELLEY R.S. 8180 18.1 13.8 131 19.8 16.5 120
SPIRIT LK 10235 9.2 -M * 12.1 -M *
STEEL CREEK PARK 10200 17.1 13.7 125 14.8 14.6 101
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Basin Index (%) 128 110
UPPER BEAR RIVER
BEAR RIVER RS 8777 10.0 -M * 11.3 -M *
BUG LAKE 7950 21.7 17.0 128 18.8 17.7 106
BURTS MILLER RANCH 8000 7.6 -M * 6.3 -M *
CHALK CREEK #1 8993 -M 21.9 * -M 22.6 *
HAYDEN FORK 9212 15.7 14.5 108 18.6 18.9 98
KELLEY R.S. 8180 18.1 13.8 131 19.8 16.5 120
LILY LAKE 9156 13.2 11.5 115 14.0 15.3 92
MONTE CRISTO 8960 25.6 24.9 103 23.2 23.5 99
SALT RIVER SUMMIT 7760 17.3 12.2 142 18.4 15.2 121
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Basin Index (%) 119 105
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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.