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 SUNDAY: OCTOBER 22 , 2006
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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* 2.2 1.4 157
COTTONWOOD CREEK 7600 1.0 .5 200* 2.9 2.1 138
GRANITE CREEK 6770 .1 .3 33* 2.4 1.2 200
GRASSY LAKE 7265 1.4 .8 175* 5.3 2.4 221
GROS VENTRE SUMMIT 8750 1.4 .9 156* 2.4 1.3 185
LEWIS LAKE DIVIDE 7850 1.1 .6 183* 3.7 2.2 168
PHILLIPS BENCH 8200 1.0 .7 143* 3.5 1.7 206
SALT RIVER SUMMIT 7600 .2 .2 100* 1.9 1.4 136
SNAKE RIVER STATION 6920 .4 .2 200* 4.2 1.6 262
SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.8 117
THUMB DIVIDE 7980 .3 .4 75* 2.1 1.4 150
TOGWOTEE PASS 9580 2.5 1.7 147* 3.1 2.0 155
TWO OCEAN PLATEAU 9240 1.4 2.0 70* 2.8 2.2 127
WILLOW CREEK 8450 1.1 1.0 110* 3.4 2.6 131
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Basin wide percent of average 124* 166
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.8 1.9 95* 2.2 1.5 147
BLACK BEAR 8170 2.2 1.7 129* 5.0 2.4 208
CANYON 8090 .8 .4 200* 2.8 1.3 215
FISHER CREEK 9100 -M 1.7 * -M 2.3 *
MADISON PLATEAU 7750 .7 .9 78* 2.8 1.8 156
NORTHEAST ENTRANCE 7350 .1 .2 50* 3.3 1.1 300
PARKER PEAK 9400 1.4 1.8 78* 2.9 1.6 181
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.8 222
THUMB DIVIDE 7980 .3 .4 75* 2.1 1.4 150
TWO OCEAN PLATEAU 9240 1.4 2.0 70* 2.8 2.2 127
WHISKEY CREEK 6800 .3 .4 75* -M 1.6 *
WHITE MILL 8700 2.2 1.3 169* 3.6 1.9 189
WOLVERINE 7650 .1 .3 33* 1.6 1.3 123
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Basin wide percent of average 96* 181
WIND RIVER
BURROUGHS CREEK 8750 1.4 .6 233* 2.2 1.2 183
COLD SPRINGS 9630 .3 .6 50* 1.1 1.4 79
DEER PARK 9700 1.1 1.6 69* 2.3 1.8 128
HOBBS PARK 10100 1.1 1.4 79* 1.3 1.5 87
LITTLE WARM 9370 .9 .7 129* 1.0 1.2 83
SOUTH PASS 9040 .7 .9 78* 2.4 1.5 160
ST. LAWRENCE ALT 8620 .6 .4 150* 1.2 1.2 100
TOGWOTEE PASS 9580 2.5 1.7 147* 3.1 2.0 155
TOWNSEND CREEK 8700 1.1 .6 183* 2.4 1.5 160
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Basin wide percent of average 114* 128
BIGHORN BASIN
BALD MTN. 9380 4.6 2.0 230* 3.1 1.7 182
BEAR TRAP MEADOW 8200 .3 .4 75* .9 1.2 75
BLACKWATER 9780 1.3 2.2 59* 2.0 1.9 105
BONE SPRINGS DIV 9350 3.7 1.9 195 2.5 1.8 139
EVENING STAR 9200 1.9 1.9 100* 3.1 2.0 155
GRAVE SPRINGS 8550 .6 .6 100* 1.1 1.5 73
KIRWIN 9550 1.3 1.3 100* 1.8 1.3 138
MARQUETTE 8760 .5 1.4 36 1.4 1.6 87
MIDDLE POWDER 7760 1.3 .9 144* 1.3 1.8 72
OWL CREEK 8975 1.3 .5 260* 1.8 .8 225
POWDER RIVER PASS 9480 1.0 .8 125* 1.5 1.4 107
SHELL CREEK 9580 3.7 2.1 176 2.1 1.4 150
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.8 222
SYLVAN ROAD 7120 .5 .3 167* 2.8 1.5 187
TIMBER CREEK 7950 .0 .5 0* 1.5 1.2 125
YOUNTS PEAK 8350 .7 .9 78* 1.8 1.3 138
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Basin wide percent of average 124* 135
SHOSHONE RIVER
BLACKWATER 9780 1.3 2.2 59* 2.0 1.9 105
EVENING STAR 9200 1.9 1.9 100* 3.1 2.0 155
KIRWIN 9550 1.3 1.3 100* 1.8 1.3 138
MARQUETTE 8760 .5 1.4 36 1.4 1.6 87
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.8 222
SYLVAN ROAD 7120 .5 .3 167* 2.8 1.5 187
YOUNTS PEAK 8350 .7 .9 78* 1.8 1.3 138
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Basin wide percent of average 76* 148
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .3 .4 75* .9 1.2 75
BIG GOOSE 7990 -M .5 * -M 1.5 *
BONE SPRINGS DIV 9350 3.7 1.9 195 2.5 1.8 139
BURGESS JUNCTION 7880 1.1 1.0 110* 2.2 1.6 138
CLOUD PEAK RESERVOIR 9860 .7 .9 78* 1.2 1.8 67
DOME LAKE 8880 .7 1.2 58* 1.5 1.8 83
GRAVE SPRINGS 8550 .6 .6 100* 1.1 1.5 73
HANSEN SAWMILL 8360 .3 .5 60* .3 1.3 23
MIDDLE POWDER 7760 1.3 .9 144* 1.3 1.8 72
POWDER RIVER PASS 9480 1.0 .8 125* 1.5 1.4 107
SUCKER CREEK 8880 1.7 .9 189* 2.2 1.7 129
TIE CREEK 6870 .5 .4 125* 2.5 1.8 139
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Basin wide percent of average 125* 97
BELLE FOURCHE
BLIND PARK 6890 -M .2 * 1.5 1.8 83
COLE CANYON 5910 .2 .4 50* 1.4 -M *
NORTH RAPID CREEK 6130 .3 .3 100* 1.1 1.8 61
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Basin wide percent of average 71* 72
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.6 .4 400* 3.5 1.7 206
DIVIDE PEAK 8860 3.1 1.2 258* 4.7 1.9 247
ELK RIVER 8700 1.4 .3 467* 3.1 1.6 194
JOE WRIGHT 10120 2.1 1.6 131* 3.3 2.4 138
NORTH FRENCH CREEK 10130 3.1 2.2 141* 4.0 2.4 167
OLD BATTLE 9920 3.8 2.0 190* 5.1 2.5 204
SAGE CREEK BASIN 7850 2.6 .6 433* 3.4 1.1 309
SOUTH BRUSH CREEK 8440 1.5 .4 375* 2.2 1.8 122
TOWER 10500 4.5 2.1 214* 6.1 2.8 218
WEBBER SPRINGS 9250 2.3 1.1 209* 4.7 2.2 214
WILLOW CREEK PASS 9540 1.6 .7 229* 1.7 1.4 121
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Basin wide percent of average 219* 192
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 2.3 1.5 153* 3.0 1.8 167
CASPER MTN. 7850 .7 1.1 64* 1.1 1.8 61
DEADMAN HILL 10220 1.2 1.5 80* 2.1 1.8 117
DEER PARK 9700 1.1 1.6 69* 2.3 1.8 128
LAPRELE CREEK 8375 .9 .6 150* 1.2 1.4 86
RENO HILL 8500 1.6 1.2 133* 2.2 1.8 122
ROACH 9700 2.4 .7 343* 3.1 1.6 194
SAND LAKE 10050 3.0 2.2 136* 3.6 2.2 164
SOUTH PASS 9040 .7 .9 78* 2.4 1.5 160
WINDY PEAK 7900 .9 .3 300* 1.1 1.2 92
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Basin wide percent of average 128* 131
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .2 200* 2.5 1.4 179
DIVIDE PEAK 8860 3.1 1.2 258* 4.7 1.9 247
OLD BATTLE 9920 3.8 2.0 190* 5.1 2.5 204
SANDSTONE RS 8150 .6 .3 200* 2.8 1.6 175
WHISKEY PARK 8950 2.0 1.0 200* 4.1 2.0 205
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Basin wide percent of average 211* 204
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .8 .8 100* 1.6 1.3 123
BLIND BULL SUM 8900 1.2 1.0 120* 2.0 1.6 125
EAST RIM DIVIDE 7930 .0 .3 0* 1.7 .9 189
ELKHART PARK G.S. 9400 .2 .5 40* 1.9 1.4 136
GROS VENTRE SUMMIT 8750 1.4 .9 156* 2.4 1.3 185
KENDALL R.S. 7740 -M .3 * -M 1.1 *
LOOMIS PARK 8240 .3 .5 60* 2.1 1.3 162
NEW FORK LAKE 8340 .4 .2 200* 1.2 1.1 109
SNIDER BASIN 8060 .5 .4 125* 1.5 1.2 125
SPRING CREEK DIVIDE 9000 1.0 .8 125* 2.1 1.8 117
TRIPLE PEAK 8500 1.0 .7 143* 2.2 1.6 138
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Basin wide percent of average 111* 139
LOWER GREEN RIVER
HAMS FORK 7840 .1 .2 50* 1.4 1.0 140
HEWINTA 9500 .0 .6 0* 2.7 1.7 159
HICKERSON PARK 9100 .5 .2 250* 1.9 1.2 158
HOLE-IN-ROCK 9150 .6 .2 300* 2.3 1.2 192
INDIAN CREEK 9425 .9 .9 100* 2.0 1.8 111
KELLEY R.S. 8180 .4 .5 80* 1.7 1.5 113
STEEL CREEK PARK 10100 1.2 1.2 100* 2.6 1.6 162
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Basin wide percent of average 97* 146
UPPER BEAR RIVER
BUG LAKE 7950 .8 .8 100* 1.8 1.6 112
HAYDEN FORK 9100 .0 .6 0* 3.9 1.7 229
KELLEY R.S. 8180 .4 .5 80* 1.7 1.5 113
LILY LAKE 9050 .5 .6 83* 2.8 1.7 165
MONTE CRISTO 8960 1.0 1.1 91* 3.4 2.0 170
SALT RIVER SUMMIT 7600 .2 .2 100* 1.9 1.4 136
TRIAL LAKE 9960 .6 1.3 46* 3.7 2.0 185
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Basin wide percent of average 69* 161
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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.