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: OCTOBER 30 , 2007
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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 .9 .6 150* 5.0 2.0 250
COTTONWOOD CREEK 7600 1.8 .9 200* 5.0 2.9 172
GRANITE CREEK 6770 1.0 .5 200* 4.1 1.7 241
GRASSY LAKE 7265 1.2 1.4 86* 5.9 3.3 179
GROS VENTRE SUMMIT 8750 2.1 1.3 162* 4.0 1.8 222
LEWIS LAKE DIVIDE 7850 1.3 1.2 108* 5.7 3.1 184
PHILLIPS BENCH 8200 1.5 1.3 115* 5.0 2.3 217
SALT RIVER SUMMIT 7600 .1 .4 25* 2.6 1.9 137
SNAKE RIVER STATION 6920 .1 .5 20* 4.6 2.2 209
SPRING CREEK DIVIDE 9000 1.9 1.4 136* 3.4 2.5 136
THUMB DIVIDE 7980 .6 .8 75* 4.4 2.0 220
TOGWOTEE PASS 9580 4.6 2.5 184* 5.8 2.7 215
TWO OCEAN PLATEAU 9240 5.7 3.0 190* 6.1 3.0 203
WILLOW CREEK 8450 2.1 1.7 124* 6.4 3.6 178
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Basin wide percent of average 142* 194
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 4.5 2.5 180* 4.4 2.1 210
BLACK BEAR 8170 3.7 2.7 137* 6.0 3.4 176
CANYON 8090 1.2 .6 200* 4.0 1.8 222
FISHER CREEK 9100 5.7 2.6 219* 6.8 3.2 212
MADISON PLATEAU 7750 1.6 1.5 107* 4.7 2.4 196
NORTHEAST ENTRANCE 7350 .0 .3 0* 3.3 1.5 220
PARKER PEAK 9400 4.1 2.4 171* 5.3 2.2 241
SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228
THUMB DIVIDE 7980 .6 .8 75* 4.4 2.0 220
TWO OCEAN PLATEAU 9240 5.7 3.0 190* 6.1 3.0 203
WHISKEY CREEK 6800 .8 .7 114* 4.4 2.2 200
WHITE MILL 8700 4.1 1.9 216* 5.2 2.6 200
WOLVERINE 7650 .0 .5 0* 3.4 1.8 189
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Basin wide percent of average 158* 207
WIND RIVER
BURROUGHS CREEK 8750 2.0 .9 222* 4.0 1.6 250
COLD SPRINGS 9630 .0 1.0 0 2.3 1.9 121
DEER PARK 9700 1.6 2.5 64 3.1 2.4 129
HOBBS PARK 10100 1.5 2.1 71 3.2 2.1 152
LITTLE WARM 9370 1.3 1.0 130* 3.1 1.7 182
SOUTH PASS 9040 .0 1.5 0* 2.3 2.1 110
ST. LAWRENCE ALT 8620 .0 .8 0 1.4 1.7 82
TOGWOTEE PASS 9580 4.6 2.5 184* 5.8 2.7 215
TOWNSEND CREEK 8700 .0 1.0 0 2.5 2.1 119
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Basin wide percent of average 83 151
BIGHORN BASIN
BALD MTN. 9380 3.0 2.6 115 3.6 2.3 157
BEAR TRAP MEADOW 8200 .6 .6 100 1.9 1.7 112
BLACKWATER 9780 5.1 3.0 170 4.9 2.6 188
BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.4 162
EVENING STAR 9200 4.1 2.6 158* 6.3 2.7 233
GRAVE SPRINGS 8550 1.1 1.1 100* 2.5 2.1 119
KIRWIN 9550 3.5 1.8 194 4.8 1.8 267
MARQUETTE 8760 .0 1.9 0 3.0 2.2 136
MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.5 96
OWL CREEK 8975 .6 .8 75 2.4 1.1 218
POWDER RIVER PASS 9480 1.2 1.2 100 3.1 1.9 163
SHELL CREEK 9580 4.0 2.6 154 4.6 2.0 230
SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228
SYLVAN ROAD 7120 .0 .5 0* 5.0 2.1 238
TIMBER CREEK 7950 .0 1.0 0 3.0 1.6 188
YOUNTS PEAK 8350 2.3 1.3 177* 5.3 1.8 294
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Basin wide percent of average 118 187
SHOSHONE RIVER
BLACKWATER 9780 5.1 3.0 170 4.9 2.6 188
EVENING STAR 9200 4.1 2.6 158* 6.3 2.7 233
KIRWIN 9550 3.5 1.8 194 4.8 1.8 267
MARQUETTE 8760 .0 1.9 0 3.0 2.2 136
SYLVAN LAKE 8420 1.9 1.9 100* 5.7 2.5 228
SYLVAN ROAD 7120 .0 .5 0* 5.0 2.1 238
YOUNTS PEAK 8350 2.3 1.3 177* 5.3 1.8 294
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Basin wide percent of average 130* 223
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 .6 100 1.9 1.7 112
BIG GOOSE 7990 1.4 .8 175* 4.1 2.1 195
BONE SPRINGS DIV 9350 2.2 2.5 88 3.9 2.4 162
BURGESS JUNCTION 7880 1.4 1.5 93 3.3 2.2 150
CLOUD PEAK RESERVOIR 9860 2.7 1.5 180* 5.1 2.5 204
DOME LAKE 8880 1.9 1.8 106 4.5 2.4 188
GRAVE SPRINGS 8550 1.1 1.1 100* 2.5 2.1 119
HANSEN SAWMILL 8360 .0 .8 0 2.9 1.8 161
MIDDLE POWDER 7760 1.8 1.2 150* 2.4 2.5 96
POWDER RIVER PASS 9480 1.2 1.2 100 3.1 1.9 163
SUCKER CREEK 8880 1.7 1.3 131* 3.7 2.3 161
TIE CREEK 6870 .0 .8 0 2.9 2.4 121
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Basin wide percent of average 106 153
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* 1.5 2.5 60
COLE CANYON 5910 .0 .8 0 1.1 -M *
NORTH RAPID CREEK 6130 .0 .5 0* 1.1 2.4 46
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Basin wide percent of average 0* 53
UPPER N. PLATTE RIVER
COLUMBINE 9160 .0 .8 0* 3.7 2.3 161
DIVIDE PEAK 8860 1.1 1.7 65* 2.6 2.6 100
ELK RIVER 8700 .6 .6 100* 3.4 2.2 155
JOE WRIGHT 10120 2.2 2.5 88* 4.9 3.3 148
NORTH FRENCH CREEK 10130 2.3 3.1 74* 3.8 3.3 115
OLD BATTLE 9920 2.4 3.0 80* 4.4 3.5 126
SAGE CREEK BASIN 7850 .0 .9 0* 2.1 1.5 140
SOUTH BRUSH CREEK 8440 .9 .7 129* 3.2 2.5 128
TOWER 10500 2.7 3.4 79* 4.9 3.8 129
WEBBER SPRINGS 9250 1.3 1.8 72* 3.5 3.0 117
WILLOW CREEK PASS 9540 2.1 1.1 191* 3.0 2.0 150
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Basin wide percent of average 80* 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 1.1 2.1 52* 2.6 2.4 108
CASPER MTN. 7850 1.4 1.7 82* 3.3 2.4 138
DEADMAN HILL 10220 2.6 2.1 124 3.3 2.4 138
DEER PARK 9700 1.6 2.5 64 3.1 2.4 129
LAPRELE CREEK 8375 .6 1.0 60* 2.2 1.9 116
RENO HILL 8500 1.9 1.7 112 3.7 2.4 154
ROACH 9700 1.8 1.2 150* 3.2 2.2 145
SAND LAKE 10050 3.6 3.2 112* 4.4 3.0 147
SOUTH PASS 9040 .0 1.5 0* 2.3 2.1 110
WINDY PEAK 7900 .6 .5 120* 1.9 1.7 112
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Basin wide percent of average 87* 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 -M .5 * 2.2 1.9 116
DIVIDE PEAK 8860 1.1 1.7 65* 2.6 2.6 100
OLD BATTLE 9920 2.4 3.0 80* 4.4 3.5 126
SANDSTONE RS 8150 .0 .5 0* 2.2 2.2 100
WHISKEY PARK 8950 .9 1.6 56* 3.7 2.8 132
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Basin wide percent of average 65* 116
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.4 1.2 117* 2.1 1.8 117
BLIND BULL SUM 8900 1.8 1.6 112* 3.1 2.2 141
EAST RIM DIVIDE 7930 .0 .6 0* 2.1 1.3 162
ELKHART PARK G.S. 9400 1.2 .8 150* 2.6 1.9 137
GROS VENTRE SUMMIT 8750 2.1 1.3 162* 4.0 1.8 222
KENDALL R.S. 7740 .2 .6 33* 2.3 1.5 153
LOOMIS PARK 8240 .9 .9 100* 2.5 1.8 139
NEW FORK LAKE 8340 .5 .5 100* 2.4 1.5 160
SNIDER BASIN 8060 .2 .7 29* 1.9 1.6 119
SPRING CREEK DIVIDE 9000 1.9 1.4 136* 3.4 2.5 136
TRIPLE PEAK 8500 1.5 1.2 125* 4.5 2.2 205
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Basin wide percent of average 108* 154
LOWER GREEN RIVER
HAMS FORK 7840 .0 .4 0* 1.6 1.4 114
HEWINTA 9500 .0 .8 0* 4.3 2.3 187
HICKERSON PARK 9100 .3 .4 75* 2.9 1.7 171
HOLE-IN-ROCK 9150 .5 .4 125* 3.4 1.6 212
INDIAN CREEK 9425 1.7 1.5 113* 2.8 2.5 112
KELLEY R.S. 8180 .5 .9 56* 2.9 2.1 138
STEEL CREEK PARK 10100 3.8 1.6 237* 4.5 2.2 205
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Basin wide percent of average 113* 162
UPPER BEAR RIVER
BUG LAKE 7950 .1 1.2 8* 1.7 2.2 77
HAYDEN FORK 9100 .2 .8 25* 3.4 2.3 148
KELLEY R.S. 8180 .5 .9 56* 2.9 2.1 138
LILY LAKE 9050 .2 .9 22* 3.7 2.3 161
MONTE CRISTO 8960 .0 1.6 0* 3.2 2.7 119
SALT RIVER SUMMIT 7600 .1 .4 25* 2.6 1.9 137
TRIAL LAKE 9960 1.1 1.9 58* 2.7 2.7 100
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Basin wide percent of average 29* 125
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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 1971-2000.
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.