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 MONDAY: APRIL 28 , 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 18.1 10.2 177 28.5 22.4 127
BLACK BEAR 8170 45.4 37.1 122 45.5 41.2 110
BLIND BULL SUM 8650 37.6 23.9 157 24.5 21.0 117
COTTONWOOD CREEK 7670 27.5 16.4 168 37.0 26.9 138
EAST RIM DIVIDE 7930 11.8 8.6 137 16.6 12.6 132
GRAND TARGHEE 9260 55.6 43.8 127 -M 33.9 *
GRANITE CREEK 6770 19.9 8.8 226 26.1 20.9 125
GRASSY LAKE 7265 39.3 29.9 131 44.1 38.7 114
GROS VENTRE SUMMIT 8750 14.9 12.0 124 15.6 14.3 109
GUNSIGHT PASS 9820 20.6 13.2 156 20.6 15.8 130
LEWIS LAKE DIVIDE 7850 42.8 30.5 140 44.0 38.0 116
PHILLIPS BENCH 8200 36.7 25.6 143 38.2 30.2 126
SALT RIVER SUMMIT 7760 13.8 8.2 168 20.6 18.1 114
SNAKE RIVER STATION 6920 14.8 8.9 166 28.4 24.3 117
SPRING CREEK DIVIDE 9000 38.0 24.1 158 34.4 25.8 133
THUMB DIVIDE 7980 20.7 13.7 151 22.0 20.6 107
TOGWOTEE PASS 9580 34.4 24.7 139 35.7 26.8 133
TWO OCEAN PLATEAU 9240 39.2 29.4 133 37.4 29.6 126
WILLOW CREEK 8380 40.2 24.5 164 44.6 36.9 121
YOUNTS PEAK 8350 -M 15.2 * -M 17.3 *
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Basin Index (%) 145 121
MADISON-GALLATIN
BLACK BEAR 8170 45.4 37.1 122 45.5 41.2 110
CANYON 7870 15.3 11.3 135 19.0 17.7 107
MADISON PLATEAU 7750 27.4 22.1 124 29.0 28.4 102
WEST YELLOWSTONE 6700 6.4 3.7 173 18.7 15.6 120
WHISKEY CREEK 6800 17.6 15.2 116 24.5 22.0 111
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Basin Index (%) 125 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.8 23.2 150 33.2 21.6 154
BURNT MTN 5880 5.8 .0 * 22.4 15.2 147
CANYON 7870 15.3 11.3 135 19.0 17.7 107
COLE CREEK 7850 25.6 16.3 157 19.3 15.8 122
EVENING STAR 9200 42.5 24.8 171 44.7 29.9 149
FISHER CREEK 9100 48.0 33.1 145 44.3 34.6 128
NORTHEAST ENTRANCE 7350 11.6 4.4 264 18.0 13.5 133
PARKER PEAK 9400 37.5 21.7 173 33.4 19.6 170
SYLVAN LAKE 8420 25.3 20.3 125 33.2 24.6 135
THUMB DIVIDE 7980 20.7 13.7 151 22.0 20.6 107
TWO OCEAN PLATEAU 9240 39.2 29.4 133 37.4 29.6 126
WHITE MILL 8700 36.3 23.8 153 32.7 25.8 127
WOLVERINE 7650 13.8 4.2 329 20.0 13.5 148
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Basin Index (%) 158 135
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 17.6 *
CASTLE CREEK 8400 6.8 -M * 13.3 -M *
COLD SPRINGS 9630 7.1 2.0 355 14.0 12.0 117
DEER PARK 9700 17.4 16.3 107 21.0 23.0 91
HOBBS PARK 10100 15.6 15.8 99 15.4 16.3 94
KIRWIN 9550 18.9 10.3 183 19.8 13.4 148
LITTLE WARM 9370 13.3 9.1 146 18.2 14.8 123
OWL CREEK 8975 2.4 1.7 141 8.6 7.6 113
SOUTH PASS 9040 14.6 15.1 97 16.3 20.0 82
ST. LAWRENCE ALT 8620 .0 3.8 0 10.2 11.2 91
TOGWOTEE PASS 9580 34.4 24.7 139 35.7 26.8 133
TOWNSEND CREEK 8700 5.0 8.2 61 10.7 14.6 73
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Basin Index (%) 120 106
BIGHORN BASIN
BALD MTN. 9380 28.5 20.5 139 22.6 19.2 118
BEAR TRAP MEADOW 8200 7.8 1.5 520 12.6 10.2 124
BONE SPRINGS DIV 9350 24.8 16.5 150 19.7 17.8 111
GRAVE SPRINGS 8550 12.4 9.2 135 14.1 12.4 114
KIRWIN 9550 18.9 10.3 183 19.8 13.4 148
MARQUETTE 8760 15.6 -M * 15.4 -M *
MIDDLE POWDER 7760 18.0 12.1 149 16.0 13.8 116
OWL CREEK 8975 2.4 1.7 141 8.6 7.6 113
POWDER RIVER PASS 9480 15.3 9.8 156 18.3 14.6 125
SHELL CREEK 9580 20.9 16.0 131 18.9 15.8 120
TIMBER CREEK 7950 2.7 3.5 77 11.0 9.5 116
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Basin Index (%) 150 120
SHOSHONE RIVER
BLACKWATER 9780 36.0 24.9 145 33.2 23.0 144
EVENING STAR 9200 42.5 24.8 171 44.7 29.9 149
MARQUETTE 8760 15.6 -M * 15.4 -M *
SYLVAN ROAD 7120 8.7 7.1 123 24.6 18.2 135
YOUNTS PEAK 8350 -M 15.2 * -M 17.3 *
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Basin Index (%) 154 144
POWDER RIVER
BEAR TRAP MEADOW 8200 7.8 1.5 520 12.6 10.2 124
CLOUD PEAK RESERVOIR 9860 22.6 16.5 137 21.2 16.1 132
GRAVE SPRINGS 8550 12.4 9.2 135 14.1 12.4 114
HANSEN SAWMILL 8360 8.1 3.6 225 14.1 10.5 134
MIDDLE POWDER 7760 18.0 12.1 149 16.0 13.8 116
POWDER RIVER PASS 9480 15.3 9.8 156 18.3 14.6 125
SOLDIER PARK 8720 12.0 -M * 13.7 -M *
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Basin Index (%) 160 124
TONGUE RIVER
BIG GOOSE 7990 12.6 9.1 138 17.1 13.6 126
BONE SPRINGS DIV 9350 24.8 16.5 150 19.7 17.8 111
BURGESS JUNCTION 7880 17.0 12.2 139 18.2 14.4 126
DOME LAKE 8880 16.4 11.7 140 17.5 16.0 109
LITTLE GOOSE 8870 14.5 -M * 19.6 -M *
SUCKER CREEK 8880 17.8 12.5 142 21.8 16.9 129
TIE CREEK 6870 6.5 2.8 232 17.1 13.8 124
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Basin Index (%) 147 120
BELLE FOURCHE
COLE CANYON 5910 3.4 .3 1133* 15.0 11.4 132
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Basin Index (%) 1133* 132
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.7 2.3 74 18.2 13.9 131
NORTH RAPID CREEK 6130 2.0 2.3 87 17.3 11.9 145
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Basin Index (%) 80 138
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.0 22.3 130 29.9 25.8 116
BLACKHALL MTN 9820 38.7 -M * -M -M *
COLUMBINE 9160 30.6 19.5 157 -M 28.1 *
DIVIDE PEAK 8880 15.7 18.0 87 25.2 23.9 105
JOE WRIGHT 10120 26.8 23.5 114 35.4 29.3 121
LAPRELE CREEK 8375 5.0 6.9 72 12.6 14.7 86
MED BOW 10500 -M -M * 43.3 -M *
NORTH FRENCH CREEK 10130 39.3 33.0 119 38.6 30.2 128
NEVER SUMMER 10280 27.7 21.5 129 22.6 -M *
OLD BATTLE 10000 35.7 34.6 103 39.7 38.6 103
RAWAH 9020 9.4 7.4 127 19.8 17.0 116
SAGE CREEK BASIN 7850 3.2 1.4 229 14.0 15.9 88
SAND LAKE 10050 35.8 31.2 115 35.6 28.5 125
SOUTH BRUSH CREEK 8440 8.1 9.9 82 17.6 17.5 101
TOWER 10500 54.3 49.8 109 -M 44.1 *
WEBBER SPRINGS 9250 21.6 22.0 98 30.8 29.5 104
WILLOW CREEK PASS 9540 16.2 13.8 117 16.9 15.4 110
ZIRKEL 9340 37.6 21.6 174 -M 30.5 *
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Basin Index (%) 118 110
SWEETWATER
DEER PARK 9700 17.4 16.3 107 21.0 23.0 91
LARSEN CREEK 9000 8.0 9.5 84 16.4 -M *
SOUTH PASS 9040 14.6 15.1 97 16.3 20.0 82
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Basin Index (%) 98 87
LOWER N. PLATTE
CASPER MTN. 7900 16.2 14.1 115 17.5 17.6 99
LAPRELE CREEK 8375 5.0 6.9 72 12.6 14.7 86
RENO HILL 8400 17.7 13.4 132 22.7 18.4 123
WINDY PEAK 7900 6.0 5.1 118 13.7 12.6 109
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Basin Index (%) 114 105
LARAMIE RIVER
BROOKLYN LAKE 10240 30.2 23.1 131 32.3 24.2 133
CINNABAR PARK 9574 24.2 20.0 121 31.8 26.6 120
CROW CREEK 8330 1.1 .0 * 14.1 13.1 108
DEADMAN HILL 10220 26.7 18.6 144 26.1 20.2 129
RAWAH 9020 9.4 7.4 127 19.8 17.0 116
ROACH 9700 20.2 17.1 118 26.6 21.9 121
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Basin Index (%) 130 123
S. PLATTE
BLACK MOUNTAIN 8920 10.1 -M * -M -M *
CROW CREEK 8330 1.1 .0 * 14.1 13.1 108
DEADMAN HILL 10220 26.7 18.6 144 26.1 20.2 129
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Basin Index (%) 149* 121
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .9 .6 150* 19.0 16.9 112
DIVIDE PEAK 8880 15.7 18.0 87 25.2 23.9 105
ELK RIVER 8700 15.3 14.1 109 24.4 22.3 109
LITTLE SNAKE RIVER 8915 25.9 22.9 113 37.1 32.2 115
OLD BATTLE 10000 35.7 34.6 103 39.7 38.6 103
SAGE CREEK BASIN 7850 3.2 1.4 229 14.0 15.9 88
SANDSTONE RS 8150 5.1 7.2 71 19.2 20.4 94
WHISKEY PARK 8950 37.3 25.9 144 42.8 31.0 138
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Basin Index (%) 112 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.0 11.6 129 15.5 14.9 104
BLIND BULL SUM 8650 37.6 23.9 157 24.5 21.0 117
EAST RIM DIVIDE 7930 11.8 8.6 137 16.6 12.6 132
ELKHART PARK G.S. 9400 18.3 11.7 156 18.0 14.7 122
GROS VENTRE SUMMIT 8750 14.9 12.0 124 15.6 14.3 109
GUNSIGHT PASS 9820 20.6 13.2 156 20.6 15.8 130
KENDALL R.S. 7740 17.6 5.6 314 23.8 15.2 157
LOOMIS PARK 8240 22.7 11.4 199 26.1 18.6 140
NEW FORK LAKE 8340 12.5 6.9 181 13.8 11.8 117
POCKET CREEK 9360 12.9 -M * 13.6 -M *
SNIDER BASIN 8060 13.8 9.9 139 20.2 15.3 132
SPRING CREEK DIVIDE 9000 38.0 24.1 158 34.4 25.8 133
TRIPLE PEAK 8500 33.3 18.5 180 39.0 27.4 142
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Basin Index (%) 163 129
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.5 -M * 15.1 -M *
BUCK PASTURE 9700 11.6 -M * 19.3 -M *
EF BLACKS FORK GS 9360 5.7 -M * 11.4 -M *
HAMS FORK 7840 9.3 4.1 227 14.9 12.8 116
HEWINTA 9519 5.8 5.7 102 16.0 15.8 101
HICKERSON PARK 9145 .0 4.9 0 9.5 11.8 81
HOLE-IN-ROCK 9150 .0 3.8 0 10.8 11.2 96
INDIAN CREEK 9425 32.1 23.7 135 28.3 24.6 115
KELLEY R.S. 8180 15.8 11.8 134 21.6 19.8 109
SPIRIT LK 10235 8.1 -M * 15.6 -M *
STEEL CREEK PARK 10200 21.6 16.8 129 18.4 18.7 98
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Basin Index (%) 119 104
UPPER BEAR RIVER
BEAR RIVER RS 8777 .3 -M * 14.3 -M *
BUG LAKE 7950 20.1 15.9 126 22.1 21.2 104
BURTS MILLER RANCH 8000 .3 -M * 7.8 -M *
CHALK CREEK #1 8993 20.5 24.6 83 25.8 27.9 92
HAYDEN FORK 9212 9.4 9.9 95 24.0 23.3 103
KELLEY R.S. 8180 15.8 11.8 134 21.6 19.8 109
LILY LAKE 9156 10.5 9.8 107 17.4 19.2 91
MONTE CRISTO 8960 23.7 27.2 87 27.7 28.7 97
SALT RIVER SUMMIT 7760 13.8 8.2 168 20.6 18.1 114
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Basin Index (%) 106 101
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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.