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: MAY 5 , 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 -M 7.2 * -M 23.2 *
BLACK BEAR 8170 -M 37.2 * -M 42.3 *
BLIND BULL SUM 8650 -M 22.7 * -M 21.7 *
COTTONWOOD CREEK 7670 -M 14.1 * -M 28.0 *
EAST RIM DIVIDE 7930 -M 7.4 * -M 13.2 *
GRAND TARGHEE 9260 52.2 46.0 113 -M 35.3 *
GRANITE CREEK 6770 16.3 7.4 220 26.2 21.6 121
GRASSY LAKE 7265 -M 27.6 * -M 39.8 *
GROS VENTRE SUMMIT 8750 -M 10.8 * -M 14.9 *
GUNSIGHT PASS 9820 -M 11.8 * -M 16.3 *
LEWIS LAKE DIVIDE 7850 -M 29.5 * -M 39.1 *
PHILLIPS BENCH 8200 -M 24.2 * -M 31.1 *
SALT RIVER SUMMIT 7760 -M 7.1 * -M 18.6 *
SNAKE RIVER STATION 6920 -M 5.1 * -M 25.1 *
SPRING CREEK DIVIDE 9000 36.1 24.2 149 34.6 26.6 130
THUMB DIVIDE 7980 16.1 10.3 156 22.1 21.3 104
TOGWOTEE PASS 9580 -M 24.8 * -M 27.8 *
TWO OCEAN PLATEAU 9240 38.9 29.9 130 37.7 30.6 123
WILLOW CREEK 8380 -M 21.8 * -M 38.3 *
YOUNTS PEAK 8350 -M 15.7 * -M 18.0 *
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Basin Index (%) 135* 120*
MADISON-GALLATIN
BLACK BEAR 8170 -M 37.2 * -M 42.3 *
CANYON 7870 -M 8.8 * -M 18.3 *
MADISON PLATEAU 7750 -M 20.8 * -M 29.4 *
WEST YELLOWSTONE 6700 -M .0 * -M 16.2 *
WHISKEY CREEK 6800 -M 12.9 * -M 22.6 *
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Basin Index (%) * *
YELLOWSTONE
BEARTOOTH LAKE 9360 32.2 22.7 142 33.3 22.3 149
BURNT MTN 5880 -M .0 * -M 16.2 *
CANYON 7870 -M 8.8 * -M 18.3 *
COLE CREEK 7850 22.8 16.8 136 19.4 16.8 115
EVENING STAR 9200 -M 24.9 * -M 31.0 *
FISHER CREEK 9100 48.1 32.9 146 44.6 35.7 125
NORTHEAST ENTRANCE 7350 -M 1.2 * -M 14.0 *
PARKER PEAK 9400 -M 21.3 * -M 20.4 *
SYLVAN LAKE 8420 -M 18.7 * -M 25.5 *
THUMB DIVIDE 7980 16.1 10.3 156 22.1 21.3 104
TWO OCEAN PLATEAU 9240 38.9 29.9 130 37.7 30.6 123
WHITE MILL 8700 35.2 24.0 147 32.9 26.7 123
WOLVERINE 7650 8.9 .8 1112* 20.1 14.0 144
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Basin Index (%) 147* 126
WIND RIVER
BURROUGHS CREEK 8750 -M 12.4 * -M 18.3 *
CASTLE CREEK 8400 2.1 -M * 13.3 -M *
COLD SPRINGS 9630 2.9 1.5 193 13.6 12.8 106
DEER PARK 9700 -M 15.1 * 21.8 23.8 92
HOBBS PARK 10100 14.2 15.9 89 15.7 17.1 92
KIRWIN 9550 -M 10.7 * -M 14.2 *
LITTLE WARM 9370 -M 7.8 * -M 15.7 *
OWL CREEK 8975 .1 .6 17 8.8 8.2 107
SOUTH PASS 9040 13.0 13.8 94 16.9 20.8 81
ST. LAWRENCE ALT 8620 .2 1.8 11 10.4 11.8 88
TOGWOTEE PASS 9580 -M 24.8 * -M 27.8 *
TOWNSEND CREEK 8700 2.1 6.2 34 11.4 15.2 75
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Basin Index (%) 82 90
BIGHORN BASIN
BALD MTN. 9380 30.1 20.4 148 23.4 20.1 116
BEAR TRAP MEADOW 8200 4.6 .3 1533* 12.8 11.0 116
BONE SPRINGS DIV 9350 24.3 16.4 148 20.5 18.6 110
GRAVE SPRINGS 8550 11.4 9.1 125 14.5 13.1 111
KIRWIN 9550 -M 10.7 * -M 14.2 *
MARQUETTE 8760 14.1 -M * 15.6 -M *
MIDDLE POWDER 7760 17.1 11.3 151 16.7 14.5 115
OWL CREEK 8975 .1 .6 17 8.8 8.2 107
POWDER RIVER PASS 9480 13.0 9.1 143 18.7 15.4 121
SHELL CREEK 9580 19.4 16.2 120 19.6 16.7 117
TIMBER CREEK 7950 .2 2.3 9 11.1 10.3 108
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Basin Index (%) 140 114
SHOSHONE RIVER
BLACKWATER 9780 35.2 25.8 136 33.3 23.9 139
EVENING STAR 9200 -M 24.9 * -M 31.0 *
MARQUETTE 8760 14.1 -M * 15.6 -M *
SYLVAN ROAD 7120 -M 3.7 * -M 18.9 *
YOUNTS PEAK 8350 -M 15.7 * -M 18.0 *
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Basin Index (%) 136* 139*
POWDER RIVER
BEAR TRAP MEADOW 8200 4.6 .3 1533* 12.8 11.0 116
CLOUD PEAK RESERVOIR 9860 23.5 16.4 143 23.1 17.1 135
GRAVE SPRINGS 8550 11.4 9.1 125 14.5 13.1 111
HANSEN SAWMILL 8360 5.3 1.7 312 14.4 11.1 130
MIDDLE POWDER 7760 17.1 11.3 151 16.7 14.5 115
POWDER RIVER PASS 9480 13.0 9.1 143 18.7 15.4 121
SOLDIER PARK 8720 9.6 -M * 14.5 -M *
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Basin Index (%) 156 122
TONGUE RIVER
BIG GOOSE 7990 11.1 9.6 116 18.0 14.5 124
BONE SPRINGS DIV 9350 24.3 16.4 148 20.5 18.6 110
BURGESS JUNCTION 7880 17.3 11.7 148 19.6 15.1 130
DOME LAKE 8880 15.3 11.3 135 18.6 16.8 111
LITTLE GOOSE 8870 13.4 -M * 20.6 -M *
SUCKER CREEK 8880 17.6 12.0 147 23.5 17.8 132
TIE CREEK 6870 5.5 2.4 229 18.1 14.8 122
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Basin Index (%) 144 121
BELLE FOURCHE
COLE CANYON 5910 2.5 .0 * 16.4 12.4 132
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Basin Index (%) * 132
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 .0 * 19.3 14.7 131
NORTH RAPID CREEK 6130 1.4 .0 * 18.7 12.6 148
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Basin Index (%) * 139
UPPER N. PLATTE
ARAPAHO RIDGE 10960 -M 22.2 * -M 26.8 *
BLACKHALL MTN 9820 -M -M * -M -M *
COLUMBINE 9160 -M 16.5 * -M 29.1 *
DIVIDE PEAK 8880 11.9 17.1 70 25.4 24.8 102
JOE WRIGHT 10120 -M 22.8 * -M 30.6 *
LAPRELE CREEK 8375 4.4 5.2 85 14.5 15.4 94
MED BOW 10500 -M -M * 44.8 -M *
NORTH FRENCH CREEK 10130 -M 32.7 * -M 31.3 *
NEVER SUMMER 10280 -M 21.9 * -M -M *
OLD BATTLE 10000 -M 35.0 * -M 39.8 *
RAWAH 9020 -M 4.4 * -M 17.7 *
SAGE CREEK BASIN 7850 -M .6 * -M 16.5 *
SAND LAKE 10050 36.6 31.6 116 37.1 29.6 125
SOUTH BRUSH CREEK 8440 -M 7.5 * -M 18.3 *
TOWER 10500 -M 51.0 * -M 45.5 *
WEBBER SPRINGS 9250 20.0 20.8 96 31.2 30.4 103
WILLOW CREEK PASS 9540 -M 14.5 * -M 16.1 *
ZIRKEL 9340 -M 20.6 * -M 31.5 *
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Basin Index (%) 98* 108*
SWEETWATER
DEER PARK 9700 -M 15.1 * 21.8 23.8 92
LARSEN CREEK 9000 4.6 8.0 58 16.6 -M *
SOUTH PASS 9040 13.0 13.8 94 16.9 20.8 81
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Basin Index (%) 81 87
LOWER N. PLATTE
CASPER MTN. 7900 15.7 12.2 129 19.0 18.5 103
LAPRELE CREEK 8375 4.4 5.2 85 14.5 15.4 94
RENO HILL 8400 17.6 12.0 147 24.9 19.4 128
WINDY PEAK 7900 4.3 2.8 154 14.5 13.3 109
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Basin Index (%) 130 109
LARAMIE RIVER
BROOKLYN LAKE 10240 -M 22.8 * -M 25.2 *
CINNABAR PARK 9574 -M 18.5 * -M 27.6 *
CROW CREEK 8330 .0 .0 * 14.4 13.8 104
DEADMAN HILL 10220 27.6 19.1 145 27.1 21.1 128
RAWAH 9020 -M 4.4 * -M 17.7 *
ROACH 9700 -M 17.0 * -M 22.8 *
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Basin Index (%) 145* 119*
S. PLATTE
BLACK MOUNTAIN 8920 7.9 -M * -M -M *
CROW CREEK 8330 .0 .0 * 14.4 13.8 104
DEADMAN HILL 10220 27.6 19.1 145 27.1 21.1 128
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Basin Index (%) 145* 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 * 19.0 17.4 109
DIVIDE PEAK 8880 11.9 17.1 70 25.4 24.8 102
ELK RIVER 8700 12.0 11.3 106 24.9 23.2 107
LITTLE SNAKE RIVER 8915 22.2 21.4 104 37.3 33.3 112
OLD BATTLE 10000 -M 35.0 * -M 39.8 *
SAGE CREEK BASIN 7850 -M .6 * -M 16.5 *
SANDSTONE RS 8150 .5 4.1 12 19.4 21.1 92
WHISKEY PARK 8950 -M 27.0 * -M 32.1 *
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Basin Index (%) 86 105
UPPER GREEN RIVER
BIG SANDY OPENING 9080 -M 9.0 * -M 15.5 *
BLIND BULL SUM 8650 -M 22.7 * -M 21.7 *
EAST RIM DIVIDE 7930 -M 7.4 * -M 13.2 *
ELKHART PARK G.S. 9400 16.4 10.3 159 18.3 15.3 120
GROS VENTRE SUMMIT 8750 -M 10.8 * -M 14.9 *
GUNSIGHT PASS 9820 -M 11.8 * -M 16.3 *
KENDALL R.S. 7740 13.1 2.0 655 23.9 15.8 151
LOOMIS PARK 8240 -M 9.5 * -M 19.2 *
NEW FORK LAKE 8340 8.9 5.0 178 14.0 12.4 113
POCKET CREEK 9360 -M -M * -M -M *
SNIDER BASIN 8060 -M 8.2 * -M 15.8 *
SPRING CREEK DIVIDE 9000 36.1 24.2 149 34.6 26.6 130
TRIPLE PEAK 8500 -M 15.9 * -M 28.3 *
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Basin Index (%) 180* 130*
LOWER GREEN RIVER
BLACKS FORK JCT 8870 -M -M * -M -M *
BUCK PASTURE 9700 9.0 -M * 19.6 -M *
EF BLACKS FORK GS 9360 2.4 -M * 11.1 -M *
HAMS FORK 7840 -M 1.1 * -M 13.3 *
HEWINTA 9519 2.8 4.0 70 16.3 16.6 98
HICKERSON PARK 9145 -M 2.7 * -M 12.4 *
HOLE-IN-ROCK 9150 -M 1.5 * -M 11.9 *
INDIAN CREEK 9425 29.6 21.8 136 28.5 25.4 112
KELLEY R.S. 8180 -M 10.0 * -M 20.5 *
SPIRIT LK 10235 -M -M * -M -M *
STEEL CREEK PARK 10200 -M 17.5 * -M 19.6 *
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Basin Index (%) 126* 107*
UPPER BEAR RIVER
BEAR RIVER RS 8777 .0 -M * 14.2 -M *
BUG LAKE 7950 15.8 13.4 118 22.3 22.1 101
BURTS MILLER RANCH 8000 .1 -M * 7.9 -M *
CHALK CREEK #1 8993 18.0 23.2 78 25.9 29.0 89
HAYDEN FORK 9212 5.5 8.1 68 24.1 24.3 99
KELLEY R.S. 8180 -M 10.0 * -M 20.5 *
LILY LAKE 9156 7.3 9.2 79 17.4 20.0 87
MONTE CRISTO 8960 20.7 24.6 84 28.2 29.9 94
SALT RIVER SUMMIT 7760 -M 7.1 * -M 18.6 *
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Basin Index (%) 86 94
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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.
