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: APRIL 24 , 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 18.5 11.0 168 27.4 22.0 125
BLACK BEAR 8170 43.4 36.9 118 42.9 40.5 106
BLIND BULL SUM 8650 36.6 24.3 151 24.0 20.6 117
COTTONWOOD CREEK 7670 26.2 17.5 150 35.7 26.3 136
EAST RIM DIVIDE 7930 12.3 9.2 134 16.0 12.4 129
GRAND TARGHEE 9260 53.2 42.9 124 -M 33.2 *
GRANITE CREEK 6770 20.0 9.8 204 24.8 20.5 121
GRASSY LAKE 7265 38.3 30.4 126 42.4 38.0 112
GROS VENTRE SUMMIT 8750 14.5 12.7 114 15.0 14.0 107
GUNSIGHT PASS 9820 19.6 13.6 144 19.4 15.3 127
LEWIS LAKE DIVIDE 7850 41.0 30.7 134 42.6 37.4 114
PHILLIPS BENCH 8200 33.8 25.3 134 35.6 29.6 120
SALT RIVER SUMMIT 7760 13.5 8.7 155 19.7 17.7 111
SNAKE RIVER STATION 6920 15.2 10.5 145 27.5 23.9 115
SPRING CREEK DIVIDE 9000 37.0 23.6 157 33.8 25.3 134
THUMB DIVIDE 7980 19.8 14.2 139 20.7 20.1 103
TOGWOTEE PASS 9580 32.3 24.4 132 34.4 26.1 132
TWO OCEAN PLATEAU 9240 37.6 28.8 131 36.2 29.0 125
WILLOW CREEK 8380 39.4 26.1 151 43.2 36.1 120
YOUNTS PEAK 8350 -M 15.1 * -M 16.9 *
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Basin Index (%) 138 119
MADISON-GALLATIN
BLACK BEAR 8170 43.4 36.9 118 42.9 40.5 106
CANYON 7870 14.7 11.8 125 17.9 17.3 103
MADISON PLATEAU 7750 25.2 22.7 111 26.9 28.0 96
WEST YELLOWSTONE 6700 7.0 5.6 125 17.4 15.4 113
WHISKEY CREEK 6800 16.9 15.4 110 22.9 21.6 106
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Basin Index (%) 116 104
YELLOWSTONE
BEARTOOTH LAKE 9360 33.2 23.6 141 31.6 21.1 150
BURNT MTN 5880 6.7 .0 * 21.3 14.8 144
CANYON 7870 14.7 11.8 125 17.9 17.3 103
COLE CREEK 7850 24.4 16.3 150 18.3 15.1 121
EVENING STAR 9200 40.5 24.4 166 42.9 29.3 146
FISHER CREEK 9100 46.3 33.1 140 41.9 34.0 123
NORTHEAST ENTRANCE 7350 11.8 5.4 219 16.8 13.2 127
PARKER PEAK 9400 34.7 21.6 161 31.5 19.2 164
SYLVAN LAKE 8420 23.4 20.3 115 31.2 24.1 129
THUMB DIVIDE 7980 19.8 14.2 139 20.7 20.1 103
TWO OCEAN PLATEAU 9240 37.6 28.8 131 36.2 29.0 125
WHITE MILL 8700 33.5 23.8 141 30.7 25.3 121
WOLVERINE 7650 14.6 5.8 252 18.5 13.1 141
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Basin Index (%) 149 130
WIND RIVER
BURROUGHS CREEK 8750 -M 13.1 * -M 17.1 *
CASTLE CREEK 8400 7.6 -M * 13.1 -M *
COLD SPRINGS 9630 7.7 3.4 226 13.7 11.5 119
DEER PARK 9700 17.5 16.3 107 20.6 22.4 92
HOBBS PARK 10100 15.6 15.5 101 15.3 15.5 99
KIRWIN 9550 17.8 10.1 176 19.4 12.9 150
LITTLE WARM 9370 13.6 9.7 140 17.8 14.3 124
OWL CREEK 8975 3.5 3.0 117 8.5 7.2 118
SOUTH PASS 9040 15.2 15.3 99 16.0 19.2 83
ST. LAWRENCE ALT 8620 .0 5.1 0 10.0 10.5 95
TOGWOTEE PASS 9580 32.3 24.4 132 34.4 26.1 132
TOWNSEND CREEK 8700 6.1 8.9 69 10.6 13.9 76
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Basin Index (%) 116 108
BIGHORN BASIN
BALD MTN. 9380 28.1 20.2 139 22.3 18.6 120
BEAR TRAP MEADOW 8200 9.1 2.2 414 12.6 9.8 129
BONE SPRINGS DIV 9350 24.4 16.4 149 19.5 17.2 113
GRAVE SPRINGS 8550 12.5 9.3 134 14.0 12.0 117
KIRWIN 9550 17.8 10.1 176 19.4 12.9 150
MARQUETTE 8760 14.2 -M * 14.3 -M *
MIDDLE POWDER 7760 18.4 12.3 150 15.9 13.2 120
OWL CREEK 8975 3.5 3.0 117 8.5 7.2 118
POWDER RIVER PASS 9480 15.4 10.3 150 18.2 14.1 129
SHELL CREEK 9580 20.7 15.8 131 18.6 15.2 122
TIMBER CREEK 7950 4.0 3.9 103 10.4 8.8 118
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Basin Index (%) 149 124
SHOSHONE RIVER
BLACKWATER 9780 34.6 24.3 142 31.8 22.3 143
EVENING STAR 9200 40.5 24.4 166 42.9 29.3 146
MARQUETTE 8760 14.2 -M * 14.3 -M *
SYLVAN ROAD 7120 9.0 8.6 105 23.5 17.9 131
YOUNTS PEAK 8350 -M 15.1 * -M 16.9 *
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Basin Index (%) 147 141
POWDER RIVER
BEAR TRAP MEADOW 8200 9.1 2.2 414 12.6 9.8 129
CLOUD PEAK RESERVOIR 9860 22.3 16.2 138 20.8 15.4 135
GRAVE SPRINGS 8550 12.5 9.3 134 14.0 12.0 117
HANSEN SAWMILL 8360 8.9 4.4 202 14.1 10.0 141
MIDDLE POWDER 7760 18.4 12.3 150 15.9 13.2 120
POWDER RIVER PASS 9480 15.4 10.3 150 18.2 14.1 129
SOLDIER PARK 8720 12.3 -M * 13.5 -M *
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Basin Index (%) 158 128
TONGUE RIVER
BIG GOOSE 7990 12.8 9.1 141 17.1 13.2 130
BONE SPRINGS DIV 9350 24.4 16.4 149 19.5 17.2 113
BURGESS JUNCTION 7880 17.5 12.5 140 18.0 13.9 129
DOME LAKE 8880 17.0 11.8 144 17.3 15.3 113
LITTLE GOOSE 8870 14.9 -M * 19.3 -M *
SUCKER CREEK 8880 18.5 12.7 146 21.7 16.2 134
TIE CREEK 6870 7.4 3.8 195 16.9 13.4 126
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Basin Index (%) 147 124
BELLE FOURCHE
COLE CANYON 5910 4.8 1.1 436 14.8 10.8 137
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Basin Index (%) 436 137
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.4 3.8 89 17.3 13.5 128
NORTH RAPID CREEK 6130 3.2 3.8 84 16.3 11.5 142
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Basin Index (%) 87 134
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.2 21.6 135 29.5 25.2 117
BLACKHALL MTN 9820 39.3 -M * -M -M *
COLUMBINE 9160 32.6 20.7 157 -M 27.5 *
DIVIDE PEAK 8880 17.5 18.2 96 24.9 23.3 107
JOE WRIGHT 10120 25.4 23.0 110 34.1 28.5 120
LAPRELE CREEK 8375 6.1 7.3 84 12.4 14.2 87
MED BOW 10500 -M -M * 42.6 -M *
NORTH FRENCH CREEK 10130 38.1 32.4 118 37.4 29.3 128
NEVER SUMMER 10280 26.8 20.9 128 21.8 -M *
OLD BATTLE 10000 35.9 33.8 106 39.2 37.7 104
RAWAH 9020 10.4 8.0 130 18.9 16.4 115
SAGE CREEK BASIN 7850 6.1 3.5 174 13.9 15.6 89
SAND LAKE 10050 35.6 30.9 115 34.8 27.6 126
SOUTH BRUSH CREEK 8440 8.2 9.9 83 16.5 16.9 98
TOWER 10500 54.2 49.1 110 -M 43.1 *
WEBBER SPRINGS 9250 23.7 21.9 108 30.5 28.9 106
WILLOW CREEK PASS 9540 16.2 13.6 119 16.6 14.9 111
ZIRKEL 9340 38.9 22.5 173 -M 30.2 *
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Basin Index (%) 120 111
SWEETWATER
DEER PARK 9700 17.5 16.3 107 20.6 22.4 92
LARSEN CREEK 9000 9.2 9.9 93 16.3 -M *
SOUTH PASS 9040 15.2 15.3 99 16.0 19.2 83
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Basin Index (%) 101 88
LOWER N. PLATTE
CASPER MTN. 7900 17.0 14.2 120 17.2 17.0 101
LAPRELE CREEK 8375 6.1 7.3 84 12.4 14.2 87
RENO HILL 8400 18.3 13.9 132 22.5 17.8 126
WINDY PEAK 7900 6.9 6.2 111 13.5 12.2 111
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Basin Index (%) 116 107
LARAMIE RIVER
BROOKLYN LAKE 10240 31.7 22.7 140 32.2 23.5 137
CINNABAR PARK 9574 25.7 19.9 129 31.3 26.0 120
CROW CREEK 8330 2.9 .0 * 12.9 12.6 102
DEADMAN HILL 10220 26.8 17.9 150 25.3 19.6 129
RAWAH 9020 10.4 8.0 130 18.9 16.4 115
ROACH 9700 21.3 16.7 128 26.4 21.3 124
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Basin Index (%) 139 123
S. PLATTE
BLACK MOUNTAIN 8920 10.8 -M * -M -M *
CROW CREEK 8330 2.9 .0 * 12.9 12.6 102
DEADMAN HILL 10220 26.8 17.9 150 25.3 19.6 129
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Basin Index (%) 166* 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.6 2.4 150 18.9 16.4 115
DIVIDE PEAK 8880 17.5 18.2 96 24.9 23.3 107
ELK RIVER 8700 17.5 14.7 119 24.1 21.8 111
LITTLE SNAKE RIVER 8915 28.1 23.5 120 36.6 31.5 116
OLD BATTLE 10000 35.9 33.8 106 39.2 37.7 104
SAGE CREEK BASIN 7850 6.1 3.5 174 13.9 15.6 89
SANDSTONE RS 8150 7.0 9.2 76 19.2 20.0 96
WHISKEY PARK 8950 38.7 25.6 151 42.3 30.3 140
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Basin Index (%) 118 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.2 12.2 125 15.3 14.5 106
BLIND BULL SUM 8650 36.6 24.3 151 24.0 20.6 117
EAST RIM DIVIDE 7930 12.3 9.2 134 16.0 12.4 129
ELKHART PARK G.S. 9400 17.8 11.8 151 17.3 14.3 121
GROS VENTRE SUMMIT 8750 14.5 12.7 114 15.0 14.0 107
GUNSIGHT PASS 9820 19.6 13.6 144 19.4 15.3 127
KENDALL R.S. 7740 18.4 7.0 263 23.3 14.9 156
LOOMIS PARK 8240 22.8 12.1 188 25.4 18.2 140
NEW FORK LAKE 8340 12.5 7.7 162 13.6 11.5 118
POCKET CREEK 9360 12.1 -M * 12.9 -M *
SNIDER BASIN 8060 15.5 10.2 152 19.9 15.1 132
SPRING CREEK DIVIDE 9000 37.0 23.6 157 33.8 25.3 134
TRIPLE PEAK 8500 33.2 19.1 174 38.1 26.8 142
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Basin Index (%) 156 129
LOWER GREEN RIVER
BLACKS FORK JCT 8870 4.0 -M * 14.4 -M *
BUCK PASTURE 9700 11.5 -M * 18.3 -M *
EF BLACKS FORK GS 9360 6.3 -M * 10.8 -M *
HAMS FORK 7840 10.4 5.3 196 14.6 12.4 118
HEWINTA 9519 6.0 7.2 83 15.3 15.4 99
HICKERSON PARK 9145 .0 5.1 0 9.2 11.4 81
HOLE-IN-ROCK 9150 1.2 5.3 23 10.4 10.9 95
INDIAN CREEK 9425 30.7 23.6 130 27.5 24.1 114
KELLEY R.S. 8180 15.8 11.9 133 21.0 19.3 109
SPIRIT LK 10235 8.0 -M * 14.8 -M *
STEEL CREEK PARK 10200 20.9 16.5 127 17.6 18.2 97
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Basin Index (%) 113 103
UPPER BEAR RIVER
BEAR RIVER RS 8777 1.3 -M * 13.6 -M *
BUG LAKE 7950 19.8 16.2 122 21.4 20.8 103
BURTS MILLER RANCH 8000 .1 -M * 7.3 -M *
CHALK CREEK #1 8993 20.2 24.6 82 24.7 27.3 90
HAYDEN FORK 9212 9.6 10.9 88 22.9 22.8 100
KELLEY R.S. 8180 15.8 11.9 133 21.0 19.3 109
LILY LAKE 9156 10.2 10.0 102 16.5 18.7 88
MONTE CRISTO 8960 22.9 27.3 84 26.7 28.0 95
SALT RIVER SUMMIT 7760 13.5 8.7 155 19.7 17.7 111
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Basin Index (%) 102 99
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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.