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 TUESDAY: APRIL 29 , 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 18.0 10.0 180 28.7 22.6 127
BLACK BEAR 8170 45.5 37.3 122 45.5 41.4 110
BLIND BULL SUM 8650 37.5 23.7 158 24.5 21.1 116
COTTONWOOD CREEK 7670 27.7 16.0 173 37.2 27.1 137
EAST RIM DIVIDE 7930 11.9 8.4 142 16.5 12.7 130
GRAND TARGHEE 9260 55.6 44.1 126 -M 34.1 *
GRANITE CREEK 6770 19.9 8.6 231 26.2 21.1 124
GRASSY LAKE 7265 39.3 29.7 132 44.0 38.9 113
GROS VENTRE SUMMIT 8750 14.8 11.8 125 15.7 14.4 109
GUNSIGHT PASS 9820 20.6 13.0 158 20.5 15.9 129
LEWIS LAKE DIVIDE 7850 42.7 30.4 140 44.0 38.2 115
PHILLIPS BENCH 8200 36.8 25.6 144 38.3 30.3 126
SALT RIVER SUMMIT 7760 13.9 8.1 172 20.6 18.2 113
SNAKE RIVER STATION 6920 14.8 8.4 176 28.4 24.5 116
SPRING CREEK DIVIDE 9000 38.1 24.3 157 34.5 25.9 133
THUMB DIVIDE 7980 20.6 13.3 155 22.0 20.7 106
TOGWOTEE PASS 9580 35.0 24.7 142 36.0 27.0 133
TWO OCEAN PLATEAU 9240 39.4 29.6 133 37.5 29.8 126
WILLOW CREEK 8380 40.1 24.1 166 44.7 37.1 120
YOUNTS PEAK 8350 -M 15.3 * -M 17.4 *
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Basin Index (%) 146 121
MADISON-GALLATIN
BLACK BEAR 8170 45.5 37.3 122 45.5 41.4 110
CANYON 7870 15.4 11.0 140 19.1 17.8 107
MADISON PLATEAU 7750 27.4 21.9 125 29.1 28.6 102
WEST YELLOWSTONE 6700 6.0 3.1 194 18.7 15.8 118
WHISKEY CREEK 6800 17.5 15.1 116 24.6 22.1 111
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Basin Index (%) 126 109
YELLOWSTONE
BEARTOOTH LAKE 9360 34.7 23.1 150 33.2 21.7 153
BURNT MTN 5880 5.8 .0 * 22.5 15.4 146
CANYON 7870 15.4 11.0 140 19.1 17.8 107
COLE CREEK 7850 25.7 16.4 157 19.5 16.0 122
EVENING STAR 9200 42.2 24.8 170 44.8 30.1 149
FISHER CREEK 9100 47.9 33.0 145 44.4 34.8 128
NORTHEAST ENTRANCE 7350 11.6 4.0 290 18.0 13.6 132
PARKER PEAK 9400 37.7 21.5 175 33.5 19.8 169
SYLVAN LAKE 8420 25.4 20.2 126 33.2 24.7 134
THUMB DIVIDE 7980 20.6 13.3 155 22.0 20.7 106
TWO OCEAN PLATEAU 9240 39.4 29.6 133 37.5 29.8 126
WHITE MILL 8700 36.2 23.8 152 32.7 26.0 126
WOLVERINE 7650 13.4 3.6 372 20.1 13.6 148
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Basin Index (%) 159 134
WIND RIVER
BURROUGHS CREEK 8750 -M 13.0 * -M 17.7 *
CASTLE CREEK 8400 6.7 -M * 13.3 -M *
COLD SPRINGS 9630 6.8 1.7 400 14.0 12.1 116
DEER PARK 9700 17.5 16.2 108 21.1 23.1 91
HOBBS PARK 10100 15.7 15.9 99 15.5 16.4 95
KIRWIN 9550 19.0 10.3 184 19.8 13.5 147
LITTLE WARM 9370 13.4 9.0 149 18.3 15.1 121
OWL CREEK 8975 2.4 1.4 171 8.6 7.7 112
SOUTH PASS 9040 14.6 15.1 97 16.3 20.1 81
ST. LAWRENCE ALT 8620 .0 3.4 0 10.2 11.3 90
TOGWOTEE PASS 9580 35.0 24.7 142 36.0 27.0 133
TOWNSEND CREEK 8700 5.0 8.0 62 10.8 14.7 73
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Basin Index (%) 122 106
BIGHORN BASIN
BALD MTN. 9380 28.9 20.5 141 22.8 19.4 118
BEAR TRAP MEADOW 8200 7.9 1.3 608 12.6 10.3 122
BONE SPRINGS DIV 9350 25.1 16.5 152 19.9 17.9 111
GRAVE SPRINGS 8550 12.7 9.3 137 14.3 12.5 114
KIRWIN 9550 19.0 10.3 184 19.8 13.5 147
MARQUETTE 8760 15.6 -M * 15.5 -M *
MIDDLE POWDER 7760 18.8 11.9 158 16.4 13.9 118
OWL CREEK 8975 2.4 1.4 171 8.6 7.7 112
POWDER RIVER PASS 9480 15.3 9.7 158 18.3 14.8 124
SHELL CREEK 9580 21.2 16.0 132 19.0 16.0 119
TIMBER CREEK 7950 2.4 3.4 71 11.0 9.7 113
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Basin Index (%) 153 120
SHOSHONE RIVER
BLACKWATER 9780 36.0 25.0 144 33.2 23.1 144
EVENING STAR 9200 42.2 24.8 170 44.8 30.1 149
MARQUETTE 8760 15.6 -M * 15.5 -M *
SYLVAN ROAD 7120 8.8 6.7 131 24.6 18.4 134
YOUNTS PEAK 8350 -M 15.3 * -M 17.4 *
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Basin Index (%) 154 143
POWDER RIVER
BEAR TRAP MEADOW 8200 7.9 1.3 608 12.6 10.3 122
CLOUD PEAK RESERVOIR 9860 23.0 16.5 139 21.4 16.2 132
GRAVE SPRINGS 8550 12.7 9.3 137 14.3 12.5 114
HANSEN SAWMILL 8360 7.9 3.3 239 14.2 10.6 134
MIDDLE POWDER 7760 18.8 11.9 158 16.4 13.9 118
POWDER RIVER PASS 9480 15.3 9.7 158 18.3 14.8 124
SOLDIER PARK 8720 12.0 -M * 13.8 -M *
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Basin Index (%) 165 124
TONGUE RIVER
BIG GOOSE 7990 12.7 9.2 138 17.2 13.7 126
BONE SPRINGS DIV 9350 25.1 16.5 152 19.9 17.9 111
BURGESS JUNCTION 7880 17.5 12.1 145 18.6 14.5 128
DOME LAKE 8880 16.8 11.6 145 17.8 16.1 111
LITTLE GOOSE 8870 14.8 -M * 19.9 -M *
SUCKER CREEK 8880 18.4 12.4 148 22.5 17.0 132
TIE CREEK 6870 6.9 2.8 246 17.5 13.9 126
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Basin Index (%) 151 122
BELLE FOURCHE
COLE CANYON 5910 3.4 .3 1133* 15.2 11.5 132
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Basin Index (%) 1133* 132
CHEYENNE RIVER BASIN
BLIND PARK 6890 2.3 1.8 128 18.7 14.0 134
NORTH RAPID CREEK 6130 2.9 1.8 161 18.0 11.9 151
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Basin Index (%) 144 142
UPPER N. PLATTE
ARAPAHO RIDGE 10960 29.2 22.3 131 30.2 25.9 117
BLACKHALL MTN 9820 38.6 -M * -M -M *
COLUMBINE 9160 30.6 19.1 160 -M 28.2 *
DIVIDE PEAK 8880 15.6 18.0 87 25.2 24.0 105
JOE WRIGHT 10120 27.2 23.5 116 36.1 29.5 122
LAPRELE CREEK 8375 5.4 6.7 81 13.2 14.8 89
MED BOW 10500 -M -M * 43.6 -M *
NORTH FRENCH CREEK 10130 39.6 33.0 120 38.9 30.4 128
NEVER SUMMER 10280 -M 21.6 * -M -M *
OLD BATTLE 10000 35.2 34.6 102 39.8 38.8 103
RAWAH 9020 9.5 7.0 136 19.9 17.0 117
SAGE CREEK BASIN 7850 2.5 1.2 208* 14.0 16.0 88
SAND LAKE 10050 36.1 31.3 115 35.8 28.7 125
SOUTH BRUSH CREEK 8440 8.2 9.8 84 17.8 17.6 101
TOWER 10500 53.9 49.8 108 55.3 44.3 125
WEBBER SPRINGS 9250 21.7 22.0 99 30.9 29.7 104
WILLOW CREEK PASS 9540 16.3 13.9 117 16.8 15.5 108
ZIRKEL 9340 37.4 21.4 175 -M 30.7 *
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Basin Index (%) 117 113
SWEETWATER
DEER PARK 9700 17.5 16.2 108 21.1 23.1 91
LARSEN CREEK 9000 7.8 9.4 83 16.4 -M *
SOUTH PASS 9040 14.6 15.1 97 16.3 20.1 81
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Basin Index (%) 98 87
LOWER N. PLATTE
CASPER MTN. 7900 17.0 14.0 121 18.2 17.7 103
LAPRELE CREEK 8375 5.4 6.7 81 13.2 14.8 89
RENO HILL 8400 18.3 13.1 140 23.1 18.6 124
WINDY PEAK 7900 6.0 4.7 128 13.9 12.8 109
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Basin Index (%) 121 107
LARAMIE RIVER
BROOKLYN LAKE 10240 30.6 23.2 132 32.6 24.4 134
CINNABAR PARK 9574 24.3 19.9 122 31.9 26.8 119
CROW CREEK 8330 1.0 .0 * 14.1 13.3 106
DEADMAN HILL 10220 26.6 18.8 141 26.1 20.4 128
RAWAH 9020 9.5 7.0 136 19.9 17.0 117
ROACH 9700 20.4 17.3 118 26.7 22.0 121
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Basin Index (%) 130 122
S. PLATTE
BLACK MOUNTAIN 8920 10.2 -M * -M -M *
CROW CREEK 8330 1.0 .0 * 14.1 13.3 106
DEADMAN HILL 10220 26.6 18.8 141 26.1 20.4 128
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Basin Index (%) 147* 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 .0 * 19.0 17.0 112
DIVIDE PEAK 8880 15.6 18.0 87 25.2 24.0 105
ELK RIVER 8700 15.4 13.8 112 24.6 22.4 110
LITTLE SNAKE RIVER 8915 26.0 22.7 115 37.1 32.4 115
OLD BATTLE 10000 35.2 34.6 102 39.8 38.8 103
SAGE CREEK BASIN 7850 2.5 1.2 208* 14.0 16.0 88
SANDSTONE RS 8150 5.0 6.7 75 19.3 20.6 94
WHISKEY PARK 8950 37.1 26.1 142 42.8 31.1 138
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Basin Index (%) 112 110
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.8 11.3 131 15.5 15.0 103
BLIND BULL SUM 8650 37.5 23.7 158 24.5 21.1 116
EAST RIM DIVIDE 7930 11.9 8.4 142 16.5 12.7 130
ELKHART PARK G.S. 9400 18.4 11.6 159 18.1 14.8 122
GROS VENTRE SUMMIT 8750 14.8 11.8 125 15.7 14.4 109
GUNSIGHT PASS 9820 20.6 13.0 158 20.5 15.9 129
KENDALL R.S. 7740 17.5 5.2 337 23.7 15.4 154
LOOMIS PARK 8240 22.9 11.3 203 26.2 18.7 140
NEW FORK LAKE 8340 12.7 6.8 187 13.9 11.9 117
POCKET CREEK 9360 12.8 -M * 13.4 -M *
SNIDER BASIN 8060 13.8 9.7 142 20.3 15.4 132
SPRING CREEK DIVIDE 9000 38.1 24.3 157 34.5 25.9 133
TRIPLE PEAK 8500 33.2 18.2 182 39.1 27.6 142
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Basin Index (%) 165 129
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.4 -M * 15.2 -M *
BUCK PASTURE 9700 11.9 -M * 19.8 -M *
EF BLACKS FORK GS 9360 5.9 -M * 11.6 -M *
HAMS FORK 7840 9.5 3.7 257 15.0 12.9 116
HEWINTA 9519 6.0 5.3 113 16.2 15.9 102
HICKERSON PARK 9145 .0 4.7 0 9.5 11.8 81
HOLE-IN-ROCK 9150 .0 3.3 0 10.9 11.3 96
INDIAN CREEK 9425 32.2 23.5 137 28.4 24.7 115
KELLEY R.S. 8180 15.9 11.8 135 21.6 19.9 109
SPIRIT LK 10235 8.3 -M * 15.7 -M *
STEEL CREEK PARK 10200 21.9 16.9 130 18.6 18.8 99
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Basin Index (%) 124 104
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.3 -M *
BUG LAKE 7950 20.2 15.7 129 22.2 21.4 104
BURTS MILLER RANCH 8000 .0 -M * 7.8 -M *
CHALK CREEK #1 8993 20.7 24.6 84 26.0 28.1 93
HAYDEN FORK 9212 9.5 9.7 98 24.0 23.5 102
KELLEY R.S. 8180 15.9 11.8 135 21.6 19.9 109
LILY LAKE 9156 10.7 9.8 109 17.4 19.3 90
MONTE CRISTO 8960 24.0 27.1 89 27.9 28.9 97
SALT RIVER SUMMIT 7760 13.9 8.1 172 20.6 18.2 113
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Basin Index (%) 108 100
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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.
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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.