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 FRIDAY: APRIL 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 18.4 10.8 170 27.4 22.1 124
BLACK BEAR 8170 43.9 36.9 119 43.9 40.7 108
BLIND BULL SUM 8650 36.8 24.3 151 24.0 20.7 116
COTTONWOOD CREEK 7670 26.5 17.3 153 35.8 26.5 135
EAST RIM DIVIDE 7930 12.2 9.0 136 16.0 12.4 129
GRAND TARGHEE 9260 53.4 43.1 124 -M 33.5 *
GRANITE CREEK 6770 19.8 9.5 208 24.8 20.6 120
GRASSY LAKE 7265 38.4 30.2 127 42.6 38.2 112
GROS VENTRE SUMMIT 8750 14.5 12.5 116 15.0 14.0 107
GUNSIGHT PASS 9820 19.5 13.5 144 19.6 15.4 127
LEWIS LAKE DIVIDE 7850 41.5 30.7 135 42.8 37.5 114
PHILLIPS BENCH 8200 34.0 25.4 134 35.8 29.8 120
SALT RIVER SUMMIT 7760 13.6 8.5 160 19.8 17.8 111
SNAKE RIVER STATION 6920 15.2 10.1 150 27.6 24.0 115
SPRING CREEK DIVIDE 9000 -M 23.7 * -M 25.4 *
THUMB DIVIDE 7980 20.1 14.2 142 21.0 20.2 104
TOGWOTEE PASS 9580 32.6 24.4 134 34.5 26.3 131
TWO OCEAN PLATEAU 9240 37.6 29.0 130 36.2 29.2 124
WILLOW CREEK 8380 39.2 25.7 153 43.2 36.3 119
YOUNTS PEAK 8350 -M 15.1 * -M 17.0 *
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Basin Index (%) 138 118
MADISON-GALLATIN
BLACK BEAR 8170 43.9 36.9 119 43.9 40.7 108
CANYON 7870 14.8 11.7 126 18.1 17.4 104
MADISON PLATEAU 7750 26.0 22.6 115 27.6 28.0 99
WEST YELLOWSTONE 6700 7.1 5.1 139 17.8 15.4 116
WHISKEY CREEK 6800 17.3 15.5 112 23.3 21.7 107
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Basin Index (%) 119 106
YELLOWSTONE
BEARTOOTH LAKE 9360 33.4 23.6 142 31.8 21.2 150
BURNT MTN 5880 6.2 .0 * 21.4 14.9 144
CANYON 7870 14.8 11.7 126 18.1 17.4 104
COLE CREEK 7850 24.4 16.3 150 18.2 15.2 120
EVENING STAR 9200 41.1 24.5 168 43.5 29.4 148
FISHER CREEK 9100 46.6 33.2 140 42.3 34.1 124
NORTHEAST ENTRANCE 7350 11.9 5.1 233 17.1 13.3 129
PARKER PEAK 9400 35.5 21.8 163 32.0 19.3 166
SYLVAN LAKE 8420 23.9 20.3 118 31.7 24.2 131
THUMB DIVIDE 7980 20.1 14.2 142 21.0 20.2 104
TWO OCEAN PLATEAU 9240 37.6 29.0 130 36.2 29.2 124
WHITE MILL 8700 34.4 23.8 145 31.2 25.4 123
WOLVERINE 7650 14.7 5.6 262 18.6 13.2 141
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Basin Index (%) 150 131
WIND RIVER
BURROUGHS CREEK 8750 -M 13.1 * -M 17.2 *
CASTLE CREEK 8400 7.2 -M * 13.1 -M *
COLD SPRINGS 9630 7.4 3.1 239 13.9 11.6 120
DEER PARK 9700 17.3 16.3 106 20.7 22.7 91
HOBBS PARK 10100 15.7 15.6 101 15.4 15.7 98
KIRWIN 9550 18.1 10.1 179 19.4 13.0 149
LITTLE WARM 9370 13.4 9.5 141 17.9 14.5 123
OWL CREEK 8975 3.1 2.7 115 8.5 7.3 116
SOUTH PASS 9040 15.0 15.2 99 16.2 19.4 84
ST. LAWRENCE ALT 8620 .0 4.9 0 10.1 10.6 95
TOGWOTEE PASS 9580 32.6 24.4 134 34.5 26.3 131
TOWNSEND CREEK 8700 5.9 8.8 67 10.6 14.1 75
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Basin Index (%) 116 108
BIGHORN BASIN
BALD MTN. 9380 28.4 20.4 139 22.4 18.7 120
BEAR TRAP MEADOW 8200 8.8 2.0 440 12.6 9.9 127
BONE SPRINGS DIV 9350 24.5 16.4 149 19.5 17.3 113
GRAVE SPRINGS 8550 12.4 9.2 135 14.0 12.2 115
KIRWIN 9550 18.1 10.1 179 19.4 13.0 149
MARQUETTE 8760 14.3 -M * 14.3 -M *
MIDDLE POWDER 7760 18.3 12.3 149 15.8 13.3 119
OWL CREEK 8975 3.1 2.7 115 8.5 7.3 116
POWDER RIVER PASS 9480 15.5 10.2 152 18.2 14.2 128
SHELL CREEK 9580 21.3 15.8 135 18.6 15.3 122
TIMBER CREEK 7950 3.4 3.7 92 10.4 9.0 116
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Basin Index (%) 150 122
SHOSHONE RIVER
BLACKWATER 9780 34.8 24.4 143 32.3 22.5 144
EVENING STAR 9200 41.1 24.5 168 43.5 29.4 148
MARQUETTE 8760 14.3 -M * 14.3 -M *
SYLVAN ROAD 7120 9.2 8.3 111 23.8 17.9 133
YOUNTS PEAK 8350 -M 15.1 * -M 17.0 *
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Basin Index (%) 149 143
POWDER RIVER
BEAR TRAP MEADOW 8200 8.8 2.0 440 12.6 9.9 127
CLOUD PEAK RESERVOIR 9860 22.4 16.3 137 20.8 15.6 133
GRAVE SPRINGS 8550 12.4 9.2 135 14.0 12.2 115
HANSEN SAWMILL 8360 8.6 4.3 200 14.1 10.1 140
MIDDLE POWDER 7760 18.3 12.3 149 15.8 13.3 119
POWDER RIVER PASS 9480 15.5 10.2 152 18.2 14.2 128
SOLDIER PARK 8720 12.0 -M * 13.5 -M *
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Basin Index (%) 158 127
TONGUE RIVER
BIG GOOSE 7990 12.7 9.1 140 17.1 13.4 128
BONE SPRINGS DIV 9350 24.5 16.4 149 19.5 17.3 113
BURGESS JUNCTION 7880 17.6 12.4 142 18.1 13.9 130
DOME LAKE 8880 17.0 11.8 144 17.4 15.4 113
LITTLE GOOSE 8870 14.7 -M * 19.3 -M *
SUCKER CREEK 8880 18.4 12.7 145 21.8 16.4 133
TIE CREEK 6870 7.2 3.5 206 17.0 13.6 125
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Basin Index (%) 148 123
BELLE FOURCHE
COLE CANYON 5910 4.4 .8 550 14.8 10.9 136
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Basin Index (%) 550 136
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.8 3.6 78 17.3 13.6 127
NORTH RAPID CREEK 6130 2.6 3.5 74 16.3 11.6 141
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Basin Index (%) 76 133
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.1 21.8 133 29.5 25.4 116
BLACKHALL MTN 9820 39.4 -M * -M -M *
COLUMBINE 9160 32.1 20.6 156 -M 27.7 *
DIVIDE PEAK 8880 17.1 18.1 94 25.1 23.5 107
JOE WRIGHT 10120 25.7 23.2 111 34.1 28.8 118
LAPRELE CREEK 8375 5.6 7.3 77 12.5 14.3 87
MED BOW 10500 -M -M * 42.8 -M *
NORTH FRENCH CREEK 10130 38.0 32.6 117 37.3 29.5 126
NEVER SUMMER 10280 26.9 21.1 127 21.8 -M *
OLD BATTLE 10000 36.1 34.1 106 39.3 37.9 104
RAWAH 9020 9.8 8.0 122 19.0 16.6 114
SAGE CREEK BASIN 7850 5.3 2.7 196 13.9 15.6 89
SAND LAKE 10050 35.3 31.0 114 34.8 27.9 125
SOUTH BRUSH CREEK 8440 7.8 10.0 78 16.6 17.0 98
TOWER 10500 54.3 49.3 110 -M 43.3 *
WEBBER SPRINGS 9250 23.5 21.9 107 30.6 29.0 106
WILLOW CREEK PASS 9540 16.2 13.7 118 16.6 15.1 110
ZIRKEL 9340 38.6 22.3 173 -M 30.3 *
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Basin Index (%) 119 110
SWEETWATER
DEER PARK 9700 17.3 16.3 106 20.7 22.7 91
LARSEN CREEK 9000 8.9 9.8 91 16.4 -M *
SOUTH PASS 9040 15.0 15.2 99 16.2 19.4 84
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Basin Index (%) 100 88
LOWER N. PLATTE
CASPER MTN. 7900 16.6 14.2 117 17.2 17.1 101
LAPRELE CREEK 8375 5.6 7.3 77 12.5 14.3 87
RENO HILL 8400 18.0 13.8 130 22.6 17.9 126
WINDY PEAK 7900 6.6 6.1 108 13.4 12.3 109
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Basin Index (%) 113 107
LARAMIE RIVER
BROOKLYN LAKE 10240 30.7 22.8 135 32.1 23.7 135
CINNABAR PARK 9574 25.4 20.0 127 31.3 26.1 120
CROW CREEK 8330 1.6 .0 * 13.0 12.8 102
DEADMAN HILL 10220 26.2 18.1 145 25.3 19.8 128
RAWAH 9020 9.8 8.0 122 19.0 16.6 114
ROACH 9700 21.1 16.8 126 26.4 21.4 123
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Basin Index (%) 134 122
S. PLATTE
BLACK MOUNTAIN 8920 10.4 -M * -M -M *
CROW CREEK 8330 1.6 .0 * 13.0 12.8 102
DEADMAN HILL 10220 26.2 18.1 145 25.3 19.8 128
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Basin Index (%) 154* 117
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.8 1.9 147 19.0 16.5 115
DIVIDE PEAK 8880 17.1 18.1 94 25.1 23.5 107
ELK RIVER 8700 17.5 14.6 120 24.1 21.9 110
LITTLE SNAKE RIVER 8915 27.6 23.3 118 36.7 31.7 116
OLD BATTLE 10000 36.1 34.1 106 39.3 37.9 104
SAGE CREEK BASIN 7850 5.3 2.7 196 13.9 15.6 89
SANDSTONE RS 8150 6.3 8.6 73 19.2 20.1 96
WHISKEY PARK 8950 38.6 25.6 151 42.3 30.4 139
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Basin Index (%) 117 111
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.2 12.1 126 15.3 14.6 105
BLIND BULL SUM 8650 36.8 24.3 151 24.0 20.7 116
EAST RIM DIVIDE 7930 12.2 9.0 136 16.0 12.4 129
ELKHART PARK G.S. 9400 17.8 11.8 151 17.3 14.4 120
GROS VENTRE SUMMIT 8750 14.5 12.5 116 15.0 14.0 107
GUNSIGHT PASS 9820 19.5 13.5 144 19.6 15.4 127
KENDALL R.S. 7740 18.2 6.6 276 23.4 15.0 156
LOOMIS PARK 8240 22.7 11.9 191 25.4 18.3 139
NEW FORK LAKE 8340 12.3 7.4 166 13.7 11.6 118
POCKET CREEK 9360 12.1 -M * 12.9 -M *
SNIDER BASIN 8060 15.1 10.1 150 19.9 15.1 132
SPRING CREEK DIVIDE 9000 -M 23.7 * -M 25.4 *
TRIPLE PEAK 8500 33.1 19.0 174 38.2 27.0 141
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Basin Index (%) 157 128
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.7 -M * 14.4 -M *
BUCK PASTURE 9700 11.4 -M * 18.2 -M *
EF BLACKS FORK GS 9360 6.0 -M * 10.8 -M *
HAMS FORK 7840 9.9 5.0 198 14.7 12.6 117
HEWINTA 9519 5.7 6.9 83 15.4 15.5 99
HICKERSON PARK 9145 .2 5.0 4 9.2 11.5 80
HOLE-IN-ROCK 9150 .9 5.0 18 10.5 11.0 95
INDIAN CREEK 9425 31.1 23.7 131 27.6 24.2 114
KELLEY R.S. 8180 15.7 11.9 132 21.1 19.5 108
SPIRIT LK 10235 -M -M * -M -M *
STEEL CREEK PARK 10200 21.1 16.5 128 17.5 18.4 95
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Basin Index (%) 114 103
UPPER BEAR RIVER
BEAR RIVER RS 8777 .7 -M * 13.6 -M *
BUG LAKE 7950 19.8 16.2 122 21.4 20.9 102
BURTS MILLER RANCH 8000 .2 -M * 7.4 -M *
CHALK CREEK #1 8993 20.0 24.6 81 24.7 27.5 90
HAYDEN FORK 9212 9.7 10.7 91 23.0 22.9 100
KELLEY R.S. 8180 15.7 11.9 132 21.1 19.5 108
LILY LAKE 9156 10.0 9.9 101 16.5 18.8 88
MONTE CRISTO 8960 22.6 27.4 82 26.8 28.2 95
SALT RIVER SUMMIT 7760 13.6 8.5 160 19.8 17.8 111
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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.