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: MAY 9 , 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 12.9 5.0 258 29.3 23.6 124
BLACK BEAR 8170 43.9 36.8 119 46.1 42.9 107
BLIND BULL SUM 8650 38.1 22.5 169 25.3 22.1 114
COTTONWOOD CREEK 7670 23.7 13.1 181 38.1 28.6 133
EAST RIM DIVIDE 7930 4.8 6.2 77 17.2 13.4 128
GRAND TARGHEE 9260 52.6 46.4 113 -M 35.9 *
GRANITE CREEK 6770 14.9 5.9 253 27.1 22.0 123
GRASSY LAKE 7265 33.2 26.4 126 44.7 40.4 111
GROS VENTRE SUMMIT 8750 13.2 9.8 135 16.7 15.2 110
GUNSIGHT PASS 9820 19.7 11.9 166 21.8 16.8 130
LEWIS LAKE DIVIDE 7850 39.2 29.5 133 44.5 39.6 112
PHILLIPS BENCH 8200 35.2 23.3 151 38.9 31.7 123
SALT RIVER SUMMIT 7760 8.1 5.1 159 21.4 19.0 113
SNAKE RIVER STATION 6920 7.9 3.1 255 28.9 25.5 113
SPRING CREEK DIVIDE 9000 35.5 23.8 149 35.3 27.0 131
THUMB DIVIDE 7980 15.0 8.9 169 22.6 21.7 104
TOGWOTEE PASS 9580 33.8 25.3 134 36.9 28.4 130
TWO OCEAN PLATEAU 9240 39.5 29.7 133 38.5 31.1 124
WILLOW CREEK 8380 33.4 21.3 157 45.6 39.0 117
YOUNTS PEAK 8350 -M 15.5 * -M 18.4 *
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Basin Index (%) 143 119
MADISON-GALLATIN
BLACK BEAR 8170 43.9 36.8 119 46.1 42.9 107
CANYON 7870 12.2 7.7 158 19.3 18.8 103
MADISON PLATEAU 7750 25.1 20.4 123 29.5 29.9 99
WEST YELLOWSTONE 6700 .0 .0 * 18.9 16.6 114
WHISKEY CREEK 6800 15.0 11.1 135 25.0 23.0 109
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Basin Index (%) 127 106
YELLOWSTONE
BEARTOOTH LAKE 9360 33.6 23.0 146 34.1 23.0 148
BURNT MTN 5880 1.0 .0 * 24.5 17.0 144
CANYON 7870 12.2 7.7 158 19.3 18.8 103
COLE CREEK 7850 24.7 17.1 144 21.0 17.8 118
EVENING STAR 9200 41.4 25.3 164 45.7 31.7 144
FISHER CREEK 9100 47.6 34.0 140 45.3 36.5 124
NORTHEAST ENTRANCE 7350 6.0 1.0 600 18.6 14.5 128
PARKER PEAK 9400 37.4 21.8 172 34.5 21.1 164
SYLVAN LAKE 8420 23.1 18.1 128 34.1 26.2 130
THUMB DIVIDE 7980 15.0 8.9 169 22.6 21.7 104
TWO OCEAN PLATEAU 9240 39.5 29.7 133 38.5 31.1 124
WHITE MILL 8700 35.7 24.6 145 33.7 27.4 123
WOLVERINE 7650 8.6 .4 2150* 20.8 14.5 143
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Basin Index (%) 154 130
WIND RIVER
BURROUGHS CREEK 8750 -M 11.7 * -M 18.7 *
CASTLE CREEK 8400 1.4 -M * 14.5 -M *
COLD SPRINGS 9630 2.7 1.7 159 15.0 13.3 113
DEER PARK 9700 15.7 14.5 108 22.1 24.4 91
HOBBS PARK 10100 14.5 15.9 91 16.6 17.7 94
KIRWIN 9550 19.5 10.9 179 21.1 14.7 144
LITTLE WARM 9370 11.3 6.7 169 19.7 16.1 122
OWL CREEK 8975 .0 .6 0 9.1 8.5 107
SOUTH PASS 9040 11.7 12.2 96 17.1 21.2 81
ST. LAWRENCE ALT 8620 .7 1.4 50 11.4 12.3 93
TOGWOTEE PASS 9580 33.8 25.3 134 36.9 28.4 130
TOWNSEND CREEK 8700 1.2 4.4 27 11.7 15.7 75
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Basin Index (%) 119 105
BIGHORN BASIN
BALD MTN. 9380 30.3 20.5 148 24.2 20.9 116
BEAR TRAP MEADOW 8200 3.1 .2 1550* 13.1 11.5 114
BONE SPRINGS DIV 9350 25.0 16.5 152 21.0 19.5 108
GRAVE SPRINGS 8550 10.5 7.9 133 14.5 14.0 104
KIRWIN 9550 19.5 10.9 179 21.1 14.7 144
MARQUETTE 8760 14.9 -M * 16.9 -M *
MIDDLE POWDER 7760 15.8 11.0 144 16.8 15.2 111
OWL CREEK 8975 .0 .6 0 9.1 8.5 107
POWDER RIVER PASS 9480 12.7 9.0 141 19.2 16.1 119
SHELL CREEK 9580 20.4 16.7 122 20.1 17.5 115
TIMBER CREEK 7950 1.5 1.7 88 12.9 10.8 119
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Basin Index (%) 146 116
SHOSHONE RIVER
BLACKWATER 9780 35.4 25.0 142 33.9 24.4 139
EVENING STAR 9200 41.4 25.3 164 45.7 31.7 144
MARQUETTE 8760 14.9 -M * 16.9 -M *
SYLVAN ROAD 7120 .0 1.9 0 25.1 19.2 131
YOUNTS PEAK 8350 -M 15.5 * -M 18.4 *
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Basin Index (%) 147 139
POWDER RIVER
BEAR TRAP MEADOW 8200 3.1 .2 1550* 13.1 11.5 114
CLOUD PEAK RESERVOIR 9860 23.5 16.7 141 24.0 18.0 133
GRAVE SPRINGS 8550 10.5 7.9 133 14.5 14.0 104
HANSEN SAWMILL 8360 4.5 1.4 321 15.4 11.8 131
MIDDLE POWDER 7760 15.8 11.0 144 16.8 15.2 111
POWDER RIVER PASS 9480 12.7 9.0 141 19.2 16.1 119
SOLDIER PARK 8720 9.3 -M * 15.7 -M *
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Basin Index (%) 152 119
TONGUE RIVER
BIG GOOSE 7990 10.9 10.4 105 18.6 15.6 119
BONE SPRINGS DIV 9350 25.0 16.5 152 21.0 19.5 108
BURGESS JUNCTION 7880 17.3 11.5 150 20.1 15.9 126
DOME LAKE 8880 16.1 11.2 144 19.3 17.8 108
LITTLE GOOSE 8870 13.5 -M * 21.6 -M *
SUCKER CREEK 8880 17.7 12.5 142 24.2 18.8 129
TIE CREEK 6870 5.0 1.7 294 18.9 15.7 120
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Basin Index (%) 144 118
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 16.8 13.4 125
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Basin Index (%) * 125
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.2 15.3 132
NORTH RAPID CREEK 6130 .0 .0 * 19.2 13.2 145
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Basin Index (%) * 138
UPPER N. PLATTE
ARAPAHO RIDGE 10960 27.0 22.4 121 30.9 27.3 113
BLACKHALL MTN 9820 35.2 -M * -M -M *
COLUMBINE 9160 25.0 13.5 185 -M 29.5 *
DIVIDE PEAK 8880 8.8 14.9 59 25.6 25.4 101
JOE WRIGHT 10120 27.9 23.0 121 37.8 31.2 121
LAPRELE CREEK 8375 1.5 3.4 44 14.6 16.0 91
MED BOW 10500 -M -M * 45.0 -M *
NORTH FRENCH CREEK 10130 37.6 32.8 115 39.7 32.2 123
NEVER SUMMER 10280 27.3 22.1 124 23.9 -M *
OLD BATTLE 10000 34.6 36.6 95 40.1 40.7 99
RAWAH 9020 5.8 3.0 193 20.6 18.0 114
SAGE CREEK BASIN 7850 .0 .0 * 14.0 16.8 83
SAND LAKE 10050 35.7 31.8 112 37.1 30.3 122
SOUTH BRUSH CREEK 8440 2.0 5.8 34 18.4 18.9 97
TOWER 10500 52.8 51.4 103 56.5 46.2 122
WEBBER SPRINGS 9250 16.6 19.8 84 31.3 31.0 101
WILLOW CREEK PASS 9540 14.4 13.7 105 17.3 16.4 105
ZIRKEL 9340 30.2 19.9 152 -M 32.2 *
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Basin Index (%) 111 110
SWEETWATER
DEER PARK 9700 15.7 14.5 108 22.1 24.4 91
LARSEN CREEK 9000 2.8 6.8 41 17.0 -M *
SOUTH PASS 9040 11.7 12.2 96 17.1 21.2 81
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Basin Index (%) 90 86
LOWER N. PLATTE
CASPER MTN. 7900 12.8 11.7 109 19.1 19.3 99
LAPRELE CREEK 8375 1.5 3.4 44 14.6 16.0 91
RENO HILL 8400 16.5 11.0 150 25.1 20.0 126
WINDY PEAK 7900 1.4 1.2 117 14.9 13.8 108
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Basin Index (%) 118 107
LARAMIE RIVER
BROOKLYN LAKE 10240 27.6 21.7 127 33.9 25.8 131
CINNABAR PARK 9574 21.5 17.8 121 32.5 28.2 115
CROW CREEK 8330 .0 .0 * 15.0 14.2 106
DEADMAN HILL 10220 26.4 18.6 142 27.7 21.6 128
RAWAH 9020 5.8 3.0 193 20.6 18.0 114
ROACH 9700 16.5 16.2 102 27.2 23.2 117
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Basin Index (%) 127 120
S. PLATTE
BLACK MOUNTAIN 8920 6.1 -M * -M -M *
CROW CREEK 8330 .0 .0 * 15.0 14.2 106
DEADMAN HILL 10220 26.4 18.6 142 27.7 21.6 128
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Basin Index (%) 142* 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.1 17.8 107
DIVIDE PEAK 8880 8.8 14.9 59 25.6 25.4 101
ELK RIVER 8700 9.2 8.6 107 25.0 23.6 106
LITTLE SNAKE RIVER 8915 -M 20.7 * -M 34.3 *
OLD BATTLE 10000 34.6 36.6 95 40.1 40.7 99
SAGE CREEK BASIN 7850 .0 .0 * 14.0 16.8 83
SANDSTONE RS 8150 .0 2.2 0 19.7 21.6 91
WHISKEY PARK 8950 38.5 26.9 143 43.3 32.8 132
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Basin Index (%) 102 105
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.8 8.6 137 16.3 16.0 102
BLIND BULL SUM 8650 38.1 22.5 169 25.3 22.1 114
EAST RIM DIVIDE 7930 4.8 6.2 77 17.2 13.4 128
ELKHART PARK G.S. 9400 16.6 9.7 171 19.5 15.8 123
GROS VENTRE SUMMIT 8750 13.2 9.8 135 16.7 15.2 110
GUNSIGHT PASS 9820 19.7 11.9 166 21.8 16.8 130
KENDALL R.S. 7740 12.4 .0 * 24.5 16.1 152
LOOMIS PARK 8240 16.8 7.6 221 27.0 19.7 137
NEW FORK LAKE 8340 8.4 3.0 280 14.5 12.7 114
POCKET CREEK 9360 11.9 -M * 14.3 -M *
SNIDER BASIN 8060 5.7 7.5 76 20.8 16.1 129
SPRING CREEK DIVIDE 9000 35.5 23.8 149 35.3 27.0 131
TRIPLE PEAK 8500 27.5 15.1 182 40.1 29.0 138
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Basin Index (%) 167 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 15.5 -M *
BUCK PASTURE 9700 8.1 -M * 20.2 -M *
EF BLACKS FORK GS 9360 .6 -M * 11.8 -M *
HAMS FORK 7840 2.3 .2 1150* 15.7 13.7 115
HEWINTA 9519 .0 2.4 0 16.6 17.0 98
HICKERSON PARK 9145 .1 .5 20* 9.6 12.7 76
HOLE-IN-ROCK 9150 .0 .3 0* 11.1 12.2 91
INDIAN CREEK 9425 29.1 21.0 139 29.2 25.9 113
KELLEY R.S. 8180 11.6 8.6 135 22.4 20.9 107
SPIRIT LK 10235 3.9 -M * 15.8 -M *
STEEL CREEK PARK 10200 19.3 17.8 108 19.0 20.0 95
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Basin Index (%) 123* 101
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.7 -M *
BUG LAKE 7950 15.1 12.4 122 23.4 22.4 104
BURTS MILLER RANCH 8000 .2 -M * 8.2 -M *
CHALK CREEK #1 8993 16.7 21.9 76 26.5 29.6 90
HAYDEN FORK 9212 3.7 6.3 59 24.5 24.7 99
KELLEY R.S. 8180 11.6 8.6 135 22.4 20.9 107
LILY LAKE 9156 5.9 6.2 95 18.0 20.4 88
MONTE CRISTO 8960 19.7 22.0 90 28.7 30.4 94
SALT RIVER SUMMIT 7760 8.1 5.1 159 21.4 19.0 113
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Basin Index (%) 98 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.