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: APRIL 27 , 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 17.8 10.4 171 28.1 22.3 126
BLACK BEAR 8170 45.2 37.0 122 45.2 41.0 110
BLIND BULL SUM 8650 37.5 24.1 156 24.5 20.8 118
COTTONWOOD CREEK 7670 27.2 16.7 163 36.9 26.8 138
EAST RIM DIVIDE 7930 11.7 8.8 133 16.6 12.5 133
GRAND TARGHEE 9260 55.0 43.6 126 -M 33.6 *
GRANITE CREEK 6770 19.9 9.0 221 25.8 20.8 124
GRASSY LAKE 7265 39.0 30.0 130 43.6 38.5 113
GROS VENTRE SUMMIT 8750 14.8 12.1 122 15.5 14.2 109
GUNSIGHT PASS 9820 20.5 13.3 154 20.6 15.5 133
LEWIS LAKE DIVIDE 7850 42.3 30.7 138 43.5 37.8 115
PHILLIPS BENCH 8200 36.3 25.6 142 37.8 30.0 126
SALT RIVER SUMMIT 7760 13.7 8.2 167 20.5 18.0 114
SNAKE RIVER STATION 6920 14.7 9.4 156 28.2 24.2 117
SPRING CREEK DIVIDE 9000 37.8 24.0 158 34.3 25.6 134
THUMB DIVIDE 7980 20.5 13.9 147 21.8 20.4 107
TOGWOTEE PASS 9580 34.0 24.6 138 35.4 26.6 133
TWO OCEAN PLATEAU 9240 38.8 29.3 132 37.1 29.5 126
WILLOW CREEK 8380 40.3 24.9 162 44.5 36.7 121
YOUNTS PEAK 8350 -M 15.1 * -M 17.2 *
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Basin Index (%) 143 121
MADISON-GALLATIN
BLACK BEAR 8170 45.2 37.0 122 45.2 41.0 110
CANYON 7870 15.3 11.5 133 18.8 17.6 107
MADISON PLATEAU 7750 27.1 22.2 122 28.8 28.3 102
WEST YELLOWSTONE 6700 6.6 4.2 157 18.6 15.6 119
WHISKEY CREEK 6800 17.6 15.4 114 24.2 21.9 111
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Basin Index (%) 124 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.6 23.4 148 33.0 21.4 154
BURNT MTN 5880 6.0 .0 * 22.3 15.0 149
CANYON 7870 15.3 11.5 133 18.8 17.6 107
COLE CREEK 7850 25.7 16.3 158 19.0 15.7 121
EVENING STAR 9200 42.2 24.6 172 44.4 29.7 149
FISHER CREEK 9100 48.1 33.2 145 43.9 34.4 128
NORTHEAST ENTRANCE 7350 11.9 4.6 259 17.9 13.4 134
PARKER PEAK 9400 -M 21.8 * 33.0 19.6 168
SYLVAN LAKE 8420 24.9 20.3 123 32.7 24.5 133
THUMB DIVIDE 7980 20.5 13.9 147 21.8 20.4 107
TWO OCEAN PLATEAU 9240 38.8 29.3 132 37.1 29.5 126
WHITE MILL 8700 36.0 23.7 152 32.6 25.7 127
WOLVERINE 7650 14.6 4.8 304 19.9 13.4 149
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Basin Index (%) 155 134
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 17.4 *
CASTLE CREEK 8400 6.8 -M * 13.3 -M *
COLD SPRINGS 9630 7.5 2.4 312 13.7 11.9 115
DEER PARK 9700 -M 16.3 * 20.9 22.9 91
HOBBS PARK 10100 15.3 15.8 97 15.1 16.2 93
KIRWIN 9550 18.7 10.2 183 19.6 13.3 147
LITTLE WARM 9370 13.2 9.2 143 18.0 14.7 122
OWL CREEK 8975 2.4 2.0 120 8.6 7.5 115
SOUTH PASS 9040 14.5 15.2 95 16.3 19.8 82
ST. LAWRENCE ALT 8620 .2 4.2 5 9.3 11.0 85
TOGWOTEE PASS 9580 34.0 24.6 138 35.4 26.6 133
TOWNSEND CREEK 8700 4.9 8.4 58 10.6 14.5 73
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Basin Index (%) 120 106
BIGHORN BASIN
BALD MTN. 9380 28.4 20.6 138 22.5 19.1 118
BEAR TRAP MEADOW 8200 7.8 1.6 488 12.6 10.1 125
BONE SPRINGS DIV 9350 24.7 16.5 150 19.5 17.6 111
GRAVE SPRINGS 8550 12.0 9.1 132 14.0 12.3 114
KIRWIN 9550 18.7 10.2 183 19.6 13.3 147
MARQUETTE 8760 15.6 -M * 15.4 -M *
MIDDLE POWDER 7760 17.5 12.2 143 15.9 13.7 116
OWL CREEK 8975 2.4 2.0 120 8.6 7.5 115
POWDER RIVER PASS 9480 15.1 10.0 151 18.3 14.5 126
SHELL CREEK 9580 20.8 15.9 131 18.8 15.7 120
TIMBER CREEK 7950 2.9 3.6 81 11.0 9.3 118
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Basin Index (%) 148 121
SHOSHONE RIVER
BLACKWATER 9780 35.7 24.7 145 32.8 22.8 144
EVENING STAR 9200 42.2 24.6 172 44.4 29.7 149
MARQUETTE 8760 15.6 -M * 15.4 -M *
SYLVAN ROAD 7120 8.7 7.5 116 24.3 18.1 134
YOUNTS PEAK 8350 -M 15.1 * -M 17.2 *
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Basin Index (%) 152 144
POWDER RIVER
BEAR TRAP MEADOW 8200 7.8 1.6 488 12.6 10.1 125
CLOUD PEAK RESERVOIR 9860 22.6 16.5 137 21.2 16.0 132
GRAVE SPRINGS 8550 12.0 9.1 132 14.0 12.3 114
HANSEN SAWMILL 8360 8.1 3.8 213 14.1 10.4 136
MIDDLE POWDER 7760 17.5 12.2 143 15.9 13.7 116
POWDER RIVER PASS 9480 15.1 10.0 151 18.3 14.5 126
SOLDIER PARK 8720 11.9 -M * 13.7 -M *
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Basin Index (%) 156 125
TONGUE RIVER
BIG GOOSE 7990 12.5 9.1 137 17.1 13.5 127
BONE SPRINGS DIV 9350 24.7 16.5 150 19.5 17.6 111
BURGESS JUNCTION 7880 17.0 12.3 138 18.2 14.3 127
DOME LAKE 8880 16.5 11.7 141 17.5 15.9 110
LITTLE GOOSE 8870 14.5 -M * 19.6 -M *
SUCKER CREEK 8880 17.7 12.5 142 21.9 16.7 131
TIE CREEK 6870 6.5 3.0 217 17.1 13.7 125
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Basin Index (%) 146 121
BELLE FOURCHE
COLE CANYON 5910 3.5 .4 875* 15.0 11.2 134
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Basin Index (%) 875* 134
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.4 2.7 52 17.5 13.8 127
NORTH RAPID CREEK 6130 1.4 2.7 52 16.5 11.8 140
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Basin Index (%) 52 133
UPPER N. PLATTE
ARAPAHO RIDGE 10960 28.9 22.1 131 29.8 25.7 116
BLACKHALL MTN 9820 38.7 -M * -M -M *
COLUMBINE 9160 30.7 19.9 154 -M 28.0 *
DIVIDE PEAK 8880 15.6 17.9 87 25.1 23.8 105
JOE WRIGHT 10120 25.7 23.4 110 34.4 29.2 118
LAPRELE CREEK 8375 5.1 7.1 72 12.6 14.6 86
MED BOW 10500 -M -M * 43.1 -M *
NORTH FRENCH CREEK 10130 38.2 32.9 116 37.5 30.0 125
NEVER SUMMER 10280 27.1 21.4 127 22.1 -M *
OLD BATTLE 10000 36.0 34.4 105 39.4 38.4 103
RAWAH 9020 8.9 7.8 114 19.5 16.8 116
SAGE CREEK BASIN 7850 3.3 1.7 194 13.9 15.8 88
SAND LAKE 10050 35.0 31.2 112 34.9 28.4 123
SOUTH BRUSH CREEK 8440 7.1 10.0 71 16.7 17.4 96
TOWER 10500 54.6 49.7 110 -M 43.8 *
WEBBER SPRINGS 9250 21.3 22.0 97 30.7 29.4 104
WILLOW CREEK PASS 9540 16.2 13.8 117 16.8 15.3 110
ZIRKEL 9340 37.7 21.9 172 -M 30.5 *
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Basin Index (%) 116 109
SWEETWATER
DEER PARK 9700 -M 16.3 * 20.9 22.9 91
LARSEN CREEK 9000 8.3 9.6 86 16.5 -M *
SOUTH PASS 9040 14.5 15.2 95 16.3 19.8 82
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Basin Index (%) 92 87
LOWER N. PLATTE
CASPER MTN. 7900 16.1 14.1 114 17.4 17.5 99
LAPRELE CREEK 8375 5.1 7.1 72 12.6 14.6 86
RENO HILL 8400 17.3 13.6 127 22.6 18.3 123
WINDY PEAK 7900 6.0 5.5 109 13.6 12.6 108
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Basin Index (%) 110 105
LARAMIE RIVER
BROOKLYN LAKE 10240 29.9 23.0 130 32.1 24.1 133
CINNABAR PARK 9574 24.0 20.1 119 31.4 26.4 119
CROW CREEK 8330 .0 .0 * 13.1 13.0 101
DEADMAN HILL 10220 25.7 18.5 139 25.4 20.1 126
RAWAH 9020 8.9 7.8 114 19.5 16.8 116
ROACH 9700 20.0 17.0 118 26.5 21.8 122
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Basin Index (%) 126 121
S. PLATTE
BLACK MOUNTAIN 8920 9.8 -M * -M -M *
CROW CREEK 8330 .0 .0 * 13.1 13.0 101
DEADMAN HILL 10220 25.7 18.5 139 25.4 20.1 126
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Basin Index (%) 139* 116
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .9 1.0 90* 19.0 16.8 113
DIVIDE PEAK 8880 15.6 17.9 87 25.1 23.8 105
ELK RIVER 8700 15.2 14.3 106 24.4 22.2 110
LITTLE SNAKE RIVER 8915 25.8 23.1 112 36.9 32.0 115
OLD BATTLE 10000 36.0 34.4 105 39.4 38.4 103
SAGE CREEK BASIN 7850 3.3 1.7 194 13.9 15.8 88
SANDSTONE RS 8150 4.9 7.7 64 19.2 20.4 94
WHISKEY PARK 8950 37.5 25.7 146 42.5 30.8 138
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Basin Index (%) 111 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.1 11.8 128 15.5 14.8 105
BLIND BULL SUM 8650 37.5 24.1 156 24.5 20.8 118
EAST RIM DIVIDE 7930 11.7 8.8 133 16.6 12.5 133
ELKHART PARK G.S. 9400 18.3 11.8 155 17.9 14.6 123
GROS VENTRE SUMMIT 8750 14.8 12.1 122 15.5 14.2 109
GUNSIGHT PASS 9820 20.5 13.3 154 20.6 15.5 133
KENDALL R.S. 7740 17.8 5.9 302 23.8 15.1 158
LOOMIS PARK 8240 22.8 11.5 198 26.0 18.5 141
NEW FORK LAKE 8340 12.6 7.1 177 13.9 11.7 119
POCKET CREEK 9360 12.8 -M * 13.4 -M *
SNIDER BASIN 8060 14.2 10.0 142 20.2 15.2 133
SPRING CREEK DIVIDE 9000 37.8 24.0 158 34.3 25.6 134
TRIPLE PEAK 8500 33.4 18.8 178 38.8 27.3 142
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Basin Index (%) 161 130
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.4 -M * 14.9 -M *
BUCK PASTURE 9700 11.4 -M * 19.1 -M *
EF BLACKS FORK GS 9360 5.5 -M * 11.2 -M *
HAMS FORK 7840 9.3 4.4 211 14.9 12.7 117
HEWINTA 9519 5.6 6.1 92 15.9 15.7 101
HICKERSON PARK 9145 .0 5.0 0 9.5 11.7 81
HOLE-IN-ROCK 9150 .3 4.2 7 10.8 11.2 96
INDIAN CREEK 9425 31.9 23.8 134 28.2 24.4 116
KELLEY R.S. 8180 15.9 11.8 135 21.6 19.7 110
SPIRIT LK 10235 8.1 -M * 15.6 -M *
STEEL CREEK PARK 10200 21.4 16.7 128 18.2 18.6 98
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Basin Index (%) 117 104
UPPER BEAR RIVER
BEAR RIVER RS 8777 .5 -M * 14.2 -M *
BUG LAKE 7950 19.9 16.1 124 22.0 21.2 104
BURTS MILLER RANCH 8000 .4 -M * 7.6 -M *
CHALK CREEK #1 8993 20.3 24.7 82 25.6 27.8 92
HAYDEN FORK 9212 9.2 10.1 91 23.9 23.2 103
KELLEY R.S. 8180 15.9 11.8 135 21.6 19.7 110
LILY LAKE 9156 10.4 9.7 107 17.3 19.0 91
MONTE CRISTO 8960 23.5 27.3 86 27.5 28.6 96
SALT RIVER SUMMIT 7760 13.7 8.2 167 20.5 18.0 114
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Basin Index (%) 105 101
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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.