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 THURSDAY: MAY 8 , 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 13.3 5.5 242 29.2 23.5 124
BLACK BEAR 8170 43.7 36.9 118 46.0 42.8 107
BLIND BULL SUM 8650 38.0 22.6 168 25.3 22.0 115
COTTONWOOD CREEK 7670 23.7 13.3 178 38.0 28.6 133
EAST RIM DIVIDE 7930 5.1 6.6 77 17.2 13.4 128
GRAND TARGHEE 9260 52.7 46.4 114 -M 35.9 *
GRANITE CREEK 6770 15.2 6.3 241 27.0 21.9 123
GRASSY LAKE 7265 33.2 26.7 124 44.7 40.3 111
GROS VENTRE SUMMIT 8750 13.4 10.0 134 16.6 15.2 109
GUNSIGHT PASS 9820 19.9 11.8 169 21.8 16.7 131
LEWIS LAKE DIVIDE 7850 39.2 29.5 133 44.5 39.5 113
PHILLIPS BENCH 8200 35.4 23.4 151 38.9 31.6 123
SALT RIVER SUMMIT 7760 8.2 5.7 144 21.4 18.9 113
SNAKE RIVER STATION 6920 8.5 3.5 243 28.9 25.4 114
SPRING CREEK DIVIDE 9000 35.5 24.0 148 35.4 26.9 132
THUMB DIVIDE 7980 15.2 9.4 162 22.6 21.6 105
TOGWOTEE PASS 9580 33.6 25.2 133 36.8 28.3 130
TWO OCEAN PLATEAU 9240 39.6 29.7 133 38.5 30.9 125
WILLOW CREEK 8380 33.6 21.5 156 45.6 38.9 117
YOUNTS PEAK 8350 -M 15.6 * -M 18.3 *
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Basin Index (%) 142 119
MADISON-GALLATIN
BLACK BEAR 8170 43.7 36.9 118 46.0 42.8 107
CANYON 7870 12.6 8.0 158 19.3 18.6 104
MADISON PLATEAU 7750 25.2 20.6 122 29.5 29.8 99
WEST YELLOWSTONE 6700 .0 .0 * 18.9 16.5 115
WHISKEY CREEK 6800 15.3 11.5 133 25.0 22.9 109
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Basin Index (%) 126 106
YELLOWSTONE
BEARTOOTH LAKE 9360 33.2 23.0 144 33.9 22.8 149
BURNT MTN 5880 1.2 .0 * 24.4 16.9 144
CANYON 7870 12.6 8.0 158 19.3 18.6 104
COLE CREEK 7850 24.6 17.0 145 20.9 17.4 120
EVENING STAR 9200 41.1 25.2 163 45.6 31.5 145
FISHER CREEK 9100 47.7 33.8 141 45.2 36.3 125
NORTHEAST ENTRANCE 7350 6.8 1.0 680 18.6 14.4 129
PARKER PEAK 9400 37.7 21.7 174 34.4 20.9 165
SYLVAN LAKE 8420 23.6 18.2 130 34.0 26.0 131
THUMB DIVIDE 7980 15.2 9.4 162 22.6 21.6 105
TWO OCEAN PLATEAU 9240 39.6 29.7 133 38.5 30.9 125
WHITE MILL 8700 35.7 24.5 146 33.6 27.2 124
WOLVERINE 7650 8.8 .4 2200* 21.0 14.4 146
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Basin Index (%) 155 131
WIND RIVER
BURROUGHS CREEK 8750 -M 11.8 * -M 18.6 *
CASTLE CREEK 8400 1.6 -M * 14.5 -M *
COLD SPRINGS 9630 2.9 1.6 181 14.9 13.2 113
DEER PARK 9700 15.7 14.6 108 21.9 24.3 90
HOBBS PARK 10100 14.5 15.9 91 16.4 17.6 93
KIRWIN 9550 19.7 10.8 182 20.9 14.6 143
LITTLE WARM 9370 11.4 6.9 165 19.5 16.0 122
OWL CREEK 8975 .4 .5 80* 9.0 8.4 107
SOUTH PASS 9040 11.8 12.6 94 17.0 21.1 81
ST. LAWRENCE ALT 8620 .8 1.4 57 11.3 12.2 93
TOGWOTEE PASS 9580 33.6 25.2 133 36.8 28.3 130
TOWNSEND CREEK 8700 1.1 4.8 23 11.5 15.6 74
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Basin Index (%) 119 105
BIGHORN BASIN
BALD MTN. 9380 30.2 20.4 148 24.1 20.7 116
BEAR TRAP MEADOW 8200 3.2 .2 1600* 13.0 11.4 114
BONE SPRINGS DIV 9350 25.0 16.4 152 21.0 19.3 109
GRAVE SPRINGS 8550 10.5 8.2 128 14.5 13.7 106
KIRWIN 9550 19.7 10.8 182 20.9 14.6 143
MARQUETTE 8760 14.8 -M * 16.9 -M *
MIDDLE POWDER 7760 15.6 11.1 141 16.8 15.0 112
OWL CREEK 8975 .4 .5 80* 9.0 8.4 107
POWDER RIVER PASS 9480 12.7 9.0 141 19.1 16.0 119
SHELL CREEK 9580 20.3 16.6 122 20.1 17.3 116
TIMBER CREEK 7950 1.7 1.8 94 12.8 10.7 120
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Basin Index (%) 147 116
SHOSHONE RIVER
BLACKWATER 9780 35.4 25.2 140 33.8 24.3 139
EVENING STAR 9200 41.1 25.2 163 45.6 31.5 145
MARQUETTE 8760 14.8 -M * 16.9 -M *
SYLVAN ROAD 7120 1.0 2.4 42 25.1 19.2 131
YOUNTS PEAK 8350 -M 15.6 * -M 18.3 *
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Basin Index (%) 147 139
POWDER RIVER
BEAR TRAP MEADOW 8200 3.2 .2 1600* 13.0 11.4 114
CLOUD PEAK RESERVOIR 9860 23.4 16.6 141 23.9 17.8 134
GRAVE SPRINGS 8550 10.5 8.2 128 14.5 13.7 106
HANSEN SAWMILL 8360 4.5 1.5 300 15.3 11.6 132
MIDDLE POWDER 7760 15.6 11.1 141 16.8 15.0 112
POWDER RIVER PASS 9480 12.7 9.0 141 19.1 16.0 119
SOLDIER PARK 8720 9.4 -M * 15.5 -M *
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Basin Index (%) 150 120
TONGUE RIVER
BIG GOOSE 7990 11.0 10.3 107 18.4 15.4 119
BONE SPRINGS DIV 9350 25.0 16.4 152 21.0 19.3 109
BURGESS JUNCTION 7880 17.2 11.4 151 20.0 15.7 127
DOME LAKE 8880 15.9 11.2 142 19.2 17.5 110
LITTLE GOOSE 8870 13.4 -M * 21.5 -M *
SUCKER CREEK 8880 17.7 12.3 144 24.2 18.6 130
TIE CREEK 6870 5.0 1.8 278 18.9 15.4 123
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Basin Index (%) 145 119
BELLE FOURCHE
COLE CANYON 5910 .0 .0 * 16.7 13.2 127
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Basin Index (%) * 127
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 20.1 15.1 133
NORTH RAPID CREEK 6130 .0 .0 * 19.2 13.0 148
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Basin Index (%) * 140
UPPER N. PLATTE
ARAPAHO RIDGE 10960 27.4 22.3 123 30.7 27.0 114
BLACKHALL MTN 9820 35.5 -M * -M -M *
COLUMBINE 9160 25.1 14.4 174 -M 29.3 *
DIVIDE PEAK 8880 8.6 15.6 55 25.3 25.2 100
JOE WRIGHT 10120 28.1 22.9 123 37.6 31.0 121
LAPRELE CREEK 8375 1.7 4.0 42 14.5 15.8 92
MED BOW 10500 -M -M * 44.8 -M *
NORTH FRENCH CREEK 10130 37.8 32.8 115 39.5 31.9 124
NEVER SUMMER 10280 27.4 22.1 124 23.8 -M *
OLD BATTLE 10000 34.6 36.2 96 40.2 40.4 100
RAWAH 9020 5.8 3.4 171 20.5 17.9 115
SAGE CREEK BASIN 7850 .0 .0 * 13.9 16.7 83
SAND LAKE 10050 35.6 31.8 112 37.0 30.1 123
SOUTH BRUSH CREEK 8440 2.3 6.2 37 18.4 18.7 98
TOWER 10500 52.9 51.4 103 56.0 46.0 122
WEBBER SPRINGS 9250 17.3 20.2 86 31.2 30.8 101
WILLOW CREEK PASS 9540 14.6 14.0 104 17.3 16.3 106
ZIRKEL 9340 30.7 20.1 153 -M 32.0 *
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Basin Index (%) 110 110
SWEETWATER
DEER PARK 9700 15.7 14.6 108 21.9 24.3 90
LARSEN CREEK 9000 3.2 7.1 45 16.8 -M *
SOUTH PASS 9040 11.8 12.6 94 17.0 21.1 81
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Basin Index (%) 90 86
LOWER N. PLATTE
CASPER MTN. 7900 12.9 11.9 108 19.0 19.0 100
LAPRELE CREEK 8375 1.7 4.0 42 14.5 15.8 92
RENO HILL 8400 16.5 11.4 145 25.0 19.9 126
WINDY PEAK 7900 1.6 1.6 100 14.9 13.6 110
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Basin Index (%) 113 107
LARAMIE RIVER
BROOKLYN LAKE 10240 28.0 21.9 128 33.9 25.7 132
CINNABAR PARK 9574 21.7 18.0 121 32.4 28.0 116
CROW CREEK 8330 .0 .0 * 14.7 14.1 104
DEADMAN HILL 10220 26.0 18.7 139 27.2 21.5 127
RAWAH 9020 5.8 3.4 171 20.5 17.9 115
ROACH 9700 16.2 16.4 99 27.0 23.1 117
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Basin Index (%) 125 119
S. PLATTE
BLACK MOUNTAIN 8920 6.0 -M * -M -M *
CROW CREEK 8330 .0 .0 * 14.7 14.1 104
DEADMAN HILL 10220 26.0 18.7 139 27.2 21.5 127
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Basin Index (%) 139* 118
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.0 17.7 107
DIVIDE PEAK 8880 8.6 15.6 55 25.3 25.2 100
ELK RIVER 8700 9.4 9.3 101 24.8 23.5 106
LITTLE SNAKE RIVER 8915 -M 20.9 * -M 34.0 *
OLD BATTLE 10000 34.6 36.2 96 40.2 40.4 100
SAGE CREEK BASIN 7850 .0 .0 * 13.9 16.7 83
SANDSTONE RS 8150 -M 2.7 * 19.6 21.5 91
WHISKEY PARK 8950 37.9 27.0 140 43.0 32.6 132
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Basin Index (%) 103 105
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.7 8.7 134 16.1 15.9 101
BLIND BULL SUM 8650 38.0 22.6 168 25.3 22.0 115
EAST RIM DIVIDE 7930 5.1 6.6 77 17.2 13.4 128
ELKHART PARK G.S. 9400 16.3 9.8 166 19.0 15.6 122
GROS VENTRE SUMMIT 8750 13.4 10.0 134 16.6 15.2 109
GUNSIGHT PASS 9820 19.9 11.8 169 21.8 16.7 131
KENDALL R.S. 7740 12.8 .2 6400* 24.5 16.0 153
LOOMIS PARK 8240 16.8 8.0 210 26.8 19.6 137
NEW FORK LAKE 8340 8.4 3.5 240 14.2 12.6 113
POCKET CREEK 9360 11.8 -M * 14.2 -M *
SNIDER BASIN 8060 6.6 7.6 87 20.7 16.1 129
SPRING CREEK DIVIDE 9000 35.5 24.0 148 35.4 26.9 132
TRIPLE PEAK 8500 27.6 15.3 180 40.0 28.8 139
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Basin Index (%) 166 127
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 15.5 -M *
BUCK PASTURE 9700 7.9 -M * 20.0 -M *
EF BLACKS FORK GS 9360 .6 -M * 11.7 -M *
HAMS FORK 7840 3.0 .3 1000* 15.7 13.6 115
HEWINTA 9519 .1 2.9 3 16.6 16.9 98
HICKERSON PARK 9145 .1 1.2 8 9.6 12.6 76
HOLE-IN-ROCK 9150 .0 .7 0* 11.1 12.1 92
INDIAN CREEK 9425 28.9 21.1 137 29.1 25.8 113
KELLEY R.S. 8180 11.7 8.9 131 22.4 20.8 108
SPIRIT LK 10235 4.0 -M * 15.8 -M *
STEEL CREEK PARK 10200 19.3 17.7 109 18.9 19.9 95
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Basin Index (%) 120* 101
UPPER BEAR RIVER
BEAR RIVER RS 8777 .2 -M * 14.5 -M *
BUG LAKE 7950 14.9 12.6 118 23.3 22.4 104
BURTS MILLER RANCH 8000 .6 -M * 8.1 -M *
CHALK CREEK #1 8993 16.6 22.2 75 26.3 29.4 89
HAYDEN FORK 9212 3.6 6.6 55 24.3 24.6 99
KELLEY R.S. 8180 11.7 8.9 131 22.4 20.8 108
LILY LAKE 9156 5.7 7.0 81 17.7 20.3 87
MONTE CRISTO 8960 19.6 22.7 86 28.5 30.3 94
SALT RIVER SUMMIT 7760 8.2 5.7 144 21.4 18.9 113
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Basin Index (%) 94 98
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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.