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: OCTOBER 23 , 2008
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .3 0 1.8 1.4 129
COTTONWOOD CREEK 7670 .1 .4 25 1.5 2.0 75
GRAND TARGHEE 9260 1.5 -M * 3.3 -M *
GRANITE CREEK 6770 .1 .2 50 1.8 1.2 150
GRASSY LAKE 7265 .1 .7 14 2.0 2.3 87
GROS VENTRE SUMMIT 8750 1.7 .9 189 2.1 1.3 162
GUNSIGHT PASS 9820 .6 -M * 1.3 -M *
LEWIS LAKE DIVIDE 7850 .1 .5 20 1.9 2.1 90
PHILLIPS BENCH 8200 .7 .7 100 1.7 1.6 106
SALT RIVER SUMMIT 7760 .0 .1 0 1.1 1.3 85
SNAKE RIVER STATION 6920 .0 .2 0 1.4 1.6 87
SPRING CREEK DIVIDE 9000 .4 .8 50 1.2 1.6 75
THUMB DIVIDE 7980 .0 .4 0 2.3 1.5 153
TOGWOTEE PASS 9580 2.1 1.7 124 2.8 1.9 147
TWO OCEAN PLATEAU 9240 2.8 2.0 140 1.7 2.1 81
WILLOW CREEK 8380 .3 1.0 30 2.3 2.6 88
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Basin wide percent of average 85 104
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 1.6 1.9 84 1.5 1.5 100
BLACK BEAR 8170 .8 1.5 53 3.3 2.3 143
CANYON 7870 .0 .3 0 .8 1.2 67
FISHER CREEK 9100 1.5 1.7 88 2.5 2.2 114
MADISON PLATEAU 7750 .4 .8 50 1.8 1.8 100
NORTHEAST ENTRANCE 7350 .0 .1 0 1.1 1.1 100
PARKER PEAK 9400 1.6 2.0 80 1.8 1.7 106
SYLVAN LAKE 8420 .0 1.2 0 1.7 1.8 94
THUMB DIVIDE 7980 .0 .4 0 2.3 1.5 153
TWO OCEAN PLATEAU 9240 2.8 2.0 140 1.7 2.1 81
WHISKEY CREEK 6800 .0 .3 0 1.4 1.5 93
WHITE MILL 8700 1.5 1.2 125 1.7 1.9 89
WOLVERINE 7650 .2 .3 67 1.4 1.3 108
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Basin wide percent of average 76 105
WIND RIVER
BURROUGHS CREEK 8750 1.9 .5 380 2.3 1.1 209
COLD SPRINGS 9630 1.5 .7 214 2.4 1.3 185
DEER PARK 9700 1.4 1.1 127 2.7 1.8 150
HOBBS PARK 10100 2.1 1.7 124 2.6 1.5 173
LITTLE WARM 9370 1.5 .7 214 2.1 1.2 175
SOUTH PASS 9040 1.6 1.0 160 3.4 1.4 243
ST. LAWRENCE ALT 8620 1.1 .6 183 2.3 1.2 192
TOGWOTEE PASS 9580 2.1 1.7 124 2.8 1.9 147
TOWNSEND CREEK 8700 2.0 .7 286 3.1 1.6 194
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Basin wide percent of average 175 182
BIGHORN BASIN
BALD MTN. 9380 2.4 2.0 120 2.6 1.8 144
BEAR TRAP MEADOW 8200 .5 .5 100 1.7 1.3 131
BLACKWATER 9780 1.7 2.3 74 1.9 1.9 100
BONE SPRINGS DIV 9350 2.1 1.9 111 2.4 1.9 126
EVENING STAR 9200 1.7 1.8 94 2.3 1.9 121
GRAVE SPRINGS 8550 .9 .8 112 2.0 1.6 125
KIRWIN 9550 1.7 1.3 131 1.9 1.3 146
MARQUETTE 8760 1.5 1.4 107 2.2 1.7 129
MIDDLE POWDER 7760 .6 1.0 60 2.1 1.9 111
OWL CREEK 8975 2.0 .7 286 2.1 .9 233
POWDER RIVER PASS 9480 1.3 .9 144 2.1 1.4 150
SHELL CREEK 9580 2.3 2.1 110 2.9 1.5 193
SYLVAN LAKE 8420 .0 1.2 0 1.7 1.8 94
SYLVAN ROAD 7120 .0 .2 0 1.3 1.3 100
TIMBER CREEK 7950 1.1 .6 183 2.3 1.2 192
YOUNTS PEAK 8350 1.1 .9 122 1.5 1.3 115
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Basin wide percent of average 107 134
SHOSHONE RIVER
BLACKWATER 9780 1.7 2.3 74 1.9 1.9 100
EVENING STAR 9200 1.7 1.8 94 2.3 1.9 121
KIRWIN 9550 1.7 1.3 131 1.9 1.3 146
MARQUETTE 8760 1.5 1.4 107 2.2 1.7 129
SYLVAN LAKE 8420 .0 1.2 0 1.7 1.8 94
SYLVAN ROAD 7120 .0 .2 0 1.3 1.3 100
YOUNTS PEAK 8350 1.1 .9 122 1.5 1.3 115
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Basin wide percent of average 85 114
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .5 100 1.7 1.3 131
BIG GOOSE 7990 .8 .6 133 1.9 1.6 119
BONE SPRINGS DIV 9350 2.1 1.9 111 2.4 1.9 126
BURGESS JUNCTION 7880 1.3 1.0 130 2.4 1.7 141
CLOUD PEAK RESERVOIR 9860 1.9 1.1 173 2.1 2.0 105
DOME LAKE 8880 1.2 1.3 92 2.1 1.9 111
GRAVE SPRINGS 8550 .9 .8 112 2.0 1.6 125
HANSEN SAWMILL 8360 .5 .5 100 1.4 1.4 100
MIDDLE POWDER 7760 .6 1.0 60 2.1 1.9 111
POWDER RIVER PASS 9480 1.3 .9 144 2.1 1.4 150
SUCKER CREEK 8880 1.5 .9 167 2.4 1.8 133
TIE CREEK 6870 .3 .4 75 3.2 1.9 168
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Basin wide percent of average 118 126
BELLE FOURCHE
BLIND PARK 6890 .0 .2 0 1.3 1.9 68
COLE CANYON 5910 .0 .6 0 2.7 1.4 193
NORTH RAPID CREEK 6130 .0 .3 0 1.8 1.9 95
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Basin wide percent of average 0 112
UPPER N. PLATTE RIVER
COLUMBINE 9160 .3 .2 150 .8 1.6 50
DIVIDE PEAK 8880 .5 1.2 42 2.3 2.0 115
ELK RIVER 8700 .0 .3 0 1.3 1.6 81
JOE WRIGHT 10120 .7 1.6 44 2.5 2.4 104
NORTH FRENCH CREEK 10130 1.1 2.2 50 1.8 2.3 78
OLD BATTLE 10000 .9 1.9 47 2.2 2.5 88
SAGE CREEK BASIN 7850 .0 .7 0 1.1 1.1 100
SOUTH BRUSH CREEK 8440 .3 .4 75 1.0 1.9 53
TOWER 10500 .9 2.0 45 2.0 2.6 77
WEBBER SPRINGS 9250 1.0 1.1 91 2.1 2.1 100
WILLOW CREEK PASS 9540 .4 .7 57 1.2 1.4 86
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Basin wide percent of average 50 85
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .8 1.4 57 1.5 1.7 88
CASPER MTN. 7900 .6 1.1 55 2.2 1.8 122
DEADMAN HILL 10220 2.0 1.5 133 1.5 1.8 83
DEER PARK 9700 1.4 1.1 127 2.7 1.8 150
LAPRELE CREEK 8375 .0 .6 0 .6 1.3 46
RENO HILL 8400 .7 1.2 58 1.5 1.8 83
ROACH 9700 1.0 .6 167 1.5 1.7 88
SAND LAKE 10050 2.1 2.2 95 1.7 2.1 81
SOUTH PASS 9040 1.6 1.0 160 3.4 1.4 243
WINDY PEAK 7900 .5 .3 167 .4 1.2 33
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Basin wide percent of average 97 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .2 * .6 1.3 46
DIVIDE PEAK 8880 .5 1.2 42 2.3 2.0 115
OLD BATTLE 10000 .9 1.9 47 2.2 2.5 88
SANDSTONE RS 8150 .1 .3 33 .9 1.6 56
WHISKEY PARK 8950 .6 1.0 60 1.7 2.1 81
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Basin wide percent of average 48 81
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .8 100 1.3 1.3 100
BLIND BULL SUM 8650 1.3 .9 144 2.1 1.5 140
EAST RIM DIVIDE 7930 .0 .3 0 1.9 .9 211
ELKHART PARK G.S. 9400 .8 .5 160 1.8 1.4 129
GROS VENTRE SUMMIT 8750 1.7 .9 189 2.1 1.3 162
GUNSIGHT PASS 9820 .6 -M * 1.3 -M *
KENDALL R.S. 7740 .1 .3 33 1.5 1.1 136
LOOMIS PARK 8240 .5 .5 100 2.2 1.2 183
NEW FORK LAKE 8340 .4 .2 200 1.5 1.1 136
SNIDER BASIN 8060 .4 .4 100 1.1 1.0 110
SPRING CREEK DIVIDE 9000 .4 .8 50 1.2 1.6 75
TRIPLE PEAK 8500 1.2 .6 200 2.1 1.5 140
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Basin wide percent of average 123 135
LOWER GREEN RIVER
HAMS FORK 7840 .0 .2 0 1.2 1.0 120
HEWINTA 9519 -M .6 * 1.2 1.7 71
HICKERSON PARK 9145 .0 .2 0 1.3 1.2 108
HOLE-IN-ROCK 9150 .0 .2 0 1.8 1.2 150
INDIAN CREEK 9425 .9 .8 112 1.6 1.7 94
KELLEY R.S. 8180 .0 .5 0 1.3 1.4 93
STEEL CREEK PARK 10200 -M 1.2 * 1.7 1.7 100
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Basin wide percent of average 47 102
UPPER BEAR RIVER
BUG LAKE 7950 -M .8 * 1.3 1.7 76
HAYDEN FORK 9212 .1 .6 17 1.3 1.7 76
KELLEY R.S. 8180 .0 .5 0 1.3 1.4 93
LILY LAKE 9156 .0 .7 0 1.7 1.7 100
MONTE CRISTO 8960 .0 1.1 0 1.7 2.0 85
SALT RIVER SUMMIT 7760 .0 .1 0 1.1 1.3 85
TRIAL LAKE 9992 .4 1.3 31 1.4 1.9 74
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Basin wide percent of average 12 84
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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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.