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: OCTOBER 23 , 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 .1 .4 25* 2.2 1.5 147
COTTONWOOD CREEK 7600 1.0 .5 200* 2.9 2.2 132
GRANITE CREEK 6770 .0 .3 0* 2.4 1.3 185
GRASSY LAKE 7265 1.4 .9 156* 5.3 2.5 212
GROS VENTRE SUMMIT 8750 1.3 1.0 130* 2.5 1.3 192
LEWIS LAKE DIVIDE 7850 1.2 .7 171* 3.7 2.3 161
PHILLIPS BENCH 8200 1.0 .8 125* 3.5 1.8 194
SALT RIVER SUMMIT 7600 .2 .2 100* 1.9 1.4 136
SNAKE RIVER STATION 6920 .2 .3 67* 4.2 1.6 262
SPRING CREEK DIVIDE 9000 1.0 .9 111* 2.1 1.9 111
THUMB DIVIDE 7980 .4 .5 80* 2.1 1.5 140
TOGWOTEE PASS 9580 2.4 1.8 133* 3.1 2.1 148
TWO OCEAN PLATEAU 9240 1.3 2.1 62* 2.8 2.3 122
WILLOW CREEK 8450 1.1 1.1 100* 3.4 2.7 126
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Basin wide percent of average 110* 159
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.9 2.0 95* 2.4 1.6 150
BLACK BEAR 8170 2.2 1.8 122* 5.0 2.6 192
CANYON 8090 .9 .4 225* 2.8 1.3 215
FISHER CREEK 9100 -M 1.8 * -M 2.4 *
MADISON PLATEAU 7750 .7 1.0 70* 2.8 1.8 156
NORTHEAST ENTRANCE 7350 .1 .2 50* 3.3 1.1 300
PARKER PEAK 9400 1.4 1.9 74* 2.8 1.7 165
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.9 211
THUMB DIVIDE 7980 .4 .5 80* 2.1 1.5 140
TWO OCEAN PLATEAU 9240 1.3 2.1 62* 2.8 2.3 122
WHISKEY CREEK 6800 .3 .4 75* -M 1.6 *
WHITE MILL 8700 2.3 1.4 164* 3.7 2.0 185
WOLVERINE 7650 .1 .3 33* 1.8 1.3 138
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Basin wide percent of average 93* 175
WIND RIVER
BURROUGHS CREEK 8750 1.5 .6 250* 2.3 1.2 192
COLD SPRINGS 9630 .4 .6 67* 1.2 1.4 86
DEER PARK 9700 1.2 1.7 71* 2.4 1.8 133
HOBBS PARK 10100 1.2 1.5 80* 1.3 1.6 81
LITTLE WARM 9370 .9 .7 129* 1.2 1.3 92
SOUTH PASS 9040 .8 1.0 80* 2.3 1.6 144
ST. LAWRENCE ALT 8620 .6 .5 120* 1.2 1.3 92
TOGWOTEE PASS 9580 2.4 1.8 133* 3.1 2.1 148
TOWNSEND CREEK 8700 1.1 .7 157* 2.6 1.6 162
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Basin wide percent of average 111* 127
BIGHORN BASIN
BALD MTN. 9380 4.6 2.1 219* 3.3 1.8 183
BEAR TRAP MEADOW 8200 .3 .4 75* 1.0 1.3 77
BLACKWATER 9780 1.4 2.3 61* 2.1 2.0 105
BONE SPRINGS DIV 9350 3.7 2.0 185 2.6 1.8 144
EVENING STAR 9200 1.9 2.0 95* 3.3 2.1 157
GRAVE SPRINGS 8550 .6 .7 86* 1.2 1.6 75
KIRWIN 9550 1.4 1.3 108 2.0 1.3 154
MARQUETTE 8760 .7 1.4 50 1.5 1.7 88
MIDDLE POWDER 7760 1.4 .9 156* 1.4 1.9 74
OWL CREEK 8975 1.3 .6 217 1.8 .9 200
POWDER RIVER PASS 9480 1.1 .9 122* 1.6 1.4 114
SHELL CREEK 9580 3.8 2.1 181 2.1 1.5 140
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.9 211
SYLVAN ROAD 7120 .4 .3 133* 2.8 1.6 175
TIMBER CREEK 7950 .0 .6 0* 1.5 1.2 125
YOUNTS PEAK 8350 .7 1.0 70* 1.9 1.3 146
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Basin wide percent of average 121* 135
SHOSHONE RIVER
BLACKWATER 9780 1.4 2.3 61* 2.1 2.0 105
EVENING STAR 9200 1.9 2.0 95* 3.3 2.1 157
KIRWIN 9550 1.4 1.3 108 2.0 1.3 154
MARQUETTE 8760 .7 1.4 50 1.5 1.7 88
SYLVAN LAKE 8420 .9 1.4 64* 4.0 1.9 211
SYLVAN ROAD 7120 .4 .3 133* 2.8 1.6 175
YOUNTS PEAK 8350 .7 1.0 70* 1.9 1.3 146
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Basin wide percent of average 76* 148
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .3 .4 75* 1.0 1.3 77
BIG GOOSE 7990 .4 .6 67* .9 1.6 56
BONE SPRINGS DIV 9350 3.7 2.0 185 2.6 1.8 144
BURGESS JUNCTION 7880 1.1 1.1 100* 2.3 1.6 144
CLOUD PEAK RESERVOIR 9860 .8 1.0 80* 1.4 1.9 74
DOME LAKE 8880 .7 1.3 54* 1.5 1.8 83
GRAVE SPRINGS 8550 .6 .7 86* 1.2 1.6 75
HANSEN SAWMILL 8360 .3 .5 60* .4 1.3 31
MIDDLE POWDER 7760 1.4 .9 156* 1.4 1.9 74
POWDER RIVER PASS 9480 1.1 .9 122* 1.6 1.4 114
SUCKER CREEK 8880 1.6 .9 178* 2.2 1.8 122
TIE CREEK 6870 .4 .4 100* 2.5 1.8 139
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Basin wide percent of average 116* 96
BELLE FOURCHE
BLIND PARK 6890 -M .3 * 1.5 1.9 79
COLE CANYON 5910 .3 .4 75* 1.5 -M *
NORTH RAPID CREEK 6130 .3 .3 100* 1.1 1.8 61
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Basin wide percent of average 86* 70
UPPER N. PLATTE RIVER
COLUMBINE 9160 1.5 .4 375* 3.5 1.8 194
DIVIDE PEAK 8860 3.0 1.2 250* 4.8 2.0 240
ELK RIVER 8700 1.4 .4 350* 3.1 1.6 194
JOE WRIGHT 10120 2.2 1.7 129* 3.4 2.5 136
NORTH FRENCH CREEK 10130 3.2 2.3 139* 4.2 2.5 168
OLD BATTLE 9920 3.8 2.1 181* 5.3 2.6 204
SAGE CREEK BASIN 7850 2.5 .6 417* 3.4 1.1 309
SOUTH BRUSH CREEK 8440 1.5 .5 300* 2.4 1.9 126
TOWER 10500 4.6 2.3 200* 6.1 2.9 210
WEBBER SPRINGS 9250 2.4 1.2 200* 4.7 2.3 204
WILLOW CREEK PASS 9540 1.6 .7 229* 1.7 1.5 113
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Basin wide percent of average 207* 188
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 2.4 1.6 150* 3.1 1.8 172
CASPER MTN. 7850 .8 1.2 67* 1.3 1.8 72
DEADMAN HILL 10220 1.1 1.6 69* 2.2 1.8 122
DEER PARK 9700 1.2 1.7 71* 2.4 1.8 133
LAPRELE CREEK 8375 1.0 .7 143* 1.3 1.4 93
RENO HILL 8500 1.6 1.2 133* 2.3 1.8 128
ROACH 9700 2.5 .8 312* 3.2 1.7 188
SAND LAKE 10050 3.2 2.3 139* 3.8 2.3 165
SOUTH PASS 9040 .8 1.0 80* 2.3 1.6 144
WINDY PEAK 7900 1.0 .3 333* 1.3 1.3 100
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Basin wide percent of average 126* 134
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .3 67* 2.5 1.4 179
DIVIDE PEAK 8860 3.0 1.2 250* 4.8 2.0 240
OLD BATTLE 9920 3.8 2.1 181* 5.3 2.6 204
SANDSTONE RS 8150 .6 .3 200* 2.8 1.7 165
WHISKEY PARK 8950 2.0 1.1 182* 4.1 2.1 195
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Basin wide percent of average 192* 199
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .9 .8 112* 1.7 1.3 131
BLIND BULL SUM 8900 1.1 1.1 100* 2.0 1.6 125
EAST RIM DIVIDE 7930 .1 .3 33* 1.7 1.0 170
ELKHART PARK G.S. 9400 .4 .5 80* 2.0 1.4 143
GROS VENTRE SUMMIT 8750 1.3 1.0 130* 2.5 1.3 192
KENDALL R.S. 7740 -M .3 * -M 1.1 *
LOOMIS PARK 8240 .3 .6 50* 2.1 1.3 162
NEW FORK LAKE 8340 .5 .3 167* 1.3 1.1 118
SNIDER BASIN 8060 .6 .4 150* 1.5 1.2 125
SPRING CREEK DIVIDE 9000 1.0 .9 111* 2.1 1.9 111
TRIPLE PEAK 8500 .9 .7 129* 2.2 1.6 138
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Basin wide percent of average 108* 139
LOWER GREEN RIVER
HAMS FORK 7840 .0 .2 0* 1.4 1.1 127
HEWINTA 9500 -M .6 * 2.7 1.8 150
HICKERSON PARK 9100 .0 .2 0* 1.9 1.3 146
HOLE-IN-ROCK 9150 .7 .2 350* 2.3 1.2 192
INDIAN CREEK 9425 .9 1.0 90* 2.1 1.9 111
KELLEY R.S. 8180 .4 .6 67* 1.7 1.6 106
STEEL CREEK PARK 10100 1.4 1.2 117* 2.9 1.7 171
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Basin wide percent of average 100* 142
UPPER BEAR RIVER
BUG LAKE 7950 .8 .9 89* 1.8 1.7 106
HAYDEN FORK 9100 .0 .6 0* 4.0 1.8 222
KELLEY R.S. 8180 .4 .6 67* 1.7 1.6 106
LILY LAKE 9050 .6 .7 86* 2.9 1.8 161
MONTE CRISTO 8960 1.0 1.2 83* 3.4 2.1 162
SALT RIVER SUMMIT 7600 .2 .2 100* 1.9 1.4 136
TRIAL LAKE 9960 .7 1.4 50* 3.7 2.1 176
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Basin wide percent of average 66* 155
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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.