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 31 , 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 .7 14* 2.5 2.0 125
COTTONWOOD CREEK 7600 1.3 .9 144* 3.0 3.0 100
GRANITE CREEK 6770 .0 .6 0* 2.5 1.7 147
GRASSY LAKE 7265 1.6 1.4 114* 5.6 3.4 165
GROS VENTRE SUMMIT 8750 1.7 1.4 121* 2.8 1.8 156
LEWIS LAKE DIVIDE 7850 1.4 1.2 117* 3.9 3.2 122
PHILLIPS BENCH 8200 1.0 1.4 71* 3.5 2.4 146
SALT RIVER SUMMIT 7600 .2 .4 50* 1.9 1.9 100
SNAKE RIVER STATION 6920 .1 .6 17* 4.4 2.2 200
SPRING CREEK DIVIDE 9000 1.0 1.5 67* 2.2 2.6 85
THUMB DIVIDE 7980 .0 .9 0* 2.2 2.0 110
TOGWOTEE PASS 9580 2.9 2.6 112* 3.5 2.8 125
TWO OCEAN PLATEAU 9240 2.2 3.1 71* 3.3 3.1 106
WILLOW CREEK 8450 1.0 1.8 56* 3.7 3.7 100
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Basin wide percent of average 78* 126
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 1.7 2.6 65 2.3 2.1 110
BLACK BEAR 8170 2.2 2.8 79* 5.3 3.5 151
CANYON 8090 .9 .7 129* 2.9 1.8 161
FISHER CREEK 9100 -M 2.7 * -M 3.3 *
MADISON PLATEAU 7750 .8 1.6 50* 3.0 2.5 120
NORTHEAST ENTRANCE 7350 .0 .3 0* 3.3 1.5 220
PARKER PEAK 9400 1.7 2.5 68 3.0 2.3 130
SYLVAN LAKE 8420 1.2 1.9 63* 4.3 2.6 165
THUMB DIVIDE 7980 .0 .9 0* 2.2 2.0 110
TWO OCEAN PLATEAU 9240 2.2 3.1 71* 3.3 3.1 106
WHISKEY CREEK 6800 .1 .8 12* 2.7 2.2 123
WHITE MILL 8700 2.2 2.0 110* 3.4 2.7 126
WOLVERINE 7650 .1 .5 20* 1.6 1.8 89
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Basin wide percent of average 66* 133
WIND RIVER
BURROUGHS CREEK 8750 1.8 1.0 180* 2.6 1.6 162
COLD SPRINGS 9630 .5 1.0 50 1.6 1.9 84
DEER PARK 9700 1.5 2.6 58 2.8 2.5 112
HOBBS PARK 10100 1.7 2.2 77 1.9 2.1 90
LITTLE WARM 9370 1.4 1.1 127* 1.4 1.7 82
SOUTH PASS 9040 1.2 1.5 80* 3.0 2.1 143
ST. LAWRENCE ALT 8620 1.1 .9 122 1.9 1.7 112
TOGWOTEE PASS 9580 2.9 2.6 112* 3.5 2.8 125
TOWNSEND CREEK 8700 1.5 1.1 136 3.0 2.1 143
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Basin wide percent of average 97 117
BIGHORN BASIN
BALD MTN. 9380 5.0 2.7 185 3.4 2.4 142
BEAR TRAP MEADOW 8200 .6 .6 100 1.2 1.7 71
BLACKWATER 9780 2.2 3.1 71 2.7 2.7 100
BONE SPRINGS DIV 9350 4.3 2.6 165 2.9 2.5 116
EVENING STAR 9200 2.3 2.7 85* 3.7 2.8 132
GRAVE SPRINGS 8550 .9 1.1 82 1.5 2.1 71
KIRWIN 9550 1.7 1.8 94 2.1 1.8 117
MARQUETTE 8760 1.0 1.9 53 1.8 2.3 78
MIDDLE POWDER 7760 1.3 1.3 100* 1.6 2.6 62
OWL CREEK 8975 1.7 .9 189 2.2 1.2 183
POWDER RIVER PASS 9480 1.5 1.3 115 2.1 1.9 111
SHELL CREEK 9580 4.3 2.6 165 2.7 2.0 135
SYLVAN LAKE 8420 1.2 1.9 63* 4.3 2.6 165
SYLVAN ROAD 7120 .8 .5 160* 3.0 2.1 143
TIMBER CREEK 7950 .8 1.0 80 2.4 1.6 150
YOUNTS PEAK 8350 1.0 1.4 71* 2.4 1.8 133
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Basin wide percent of average 112 117
SHOSHONE RIVER
BLACKWATER 9780 2.2 3.1 71 2.7 2.7 100
EVENING STAR 9200 2.3 2.7 85* 3.7 2.8 132
KIRWIN 9550 1.7 1.8 94 2.1 1.8 117
MARQUETTE 8760 1.0 1.9 53 1.8 2.3 78
SYLVAN LAKE 8420 1.2 1.9 63* 4.3 2.6 165
SYLVAN ROAD 7120 .8 .5 160* 3.0 2.1 143
YOUNTS PEAK 8350 1.0 1.4 71* 2.4 1.8 133
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Basin wide percent of average 77* 124
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 .6 100 1.2 1.7 71
BIG GOOSE 7990 -M .9 * -M 2.1 *
BONE SPRINGS DIV 9350 4.3 2.6 165 2.9 2.5 116
BURGESS JUNCTION 7880 1.3 1.5 87 2.7 2.2 123
CLOUD PEAK RESERVOIR 9860 1.5 1.5 100* 1.6 2.6 62
DOME LAKE 8880 1.1 1.8 61 2.2 2.5 88
GRAVE SPRINGS 8550 .9 1.1 82 1.5 2.1 71
HANSEN SAWMILL 8360 .0 .9 0 .7 1.8 39
MIDDLE POWDER 7760 1.3 1.3 100* 1.6 2.6 62
POWDER RIVER PASS 9480 1.5 1.3 115 2.1 1.9 111
SUCKER CREEK 8880 2.0 1.3 154* 2.7 2.4 113
TIE CREEK 6870 .2 .8 25 2.8 2.5 112
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Basin wide percent of average 100 89
BELLE FOURCHE
BLIND PARK 6890 .6 .6 100* 1.5 2.6 58
COLE CANYON 5910 .0 .8 0 1.7 -M *
NORTH RAPID CREEK 6130 .1 .5 20* 1.0 2.5 40
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Basin wide percent of average 37* 49
UPPER N. PLATTE RIVER
COLUMBINE 9160 2.0 .8 250* 4.4 2.4 183
DIVIDE PEAK 8860 3.6 1.7 212* 5.5 2.7 204
ELK RIVER 8700 1.9 .7 271* 3.9 2.2 177
JOE WRIGHT 10120 3.4 2.6 131 4.6 3.4 135
NORTH FRENCH CREEK 10130 3.7 3.2 116* 4.8 3.4 141
OLD BATTLE 9920 4.6 3.1 148* 6.2 3.6 172
SAGE CREEK BASIN 7850 2.7 1.0 270* 3.9 1.5 260
SOUTH BRUSH CREEK 8440 1.6 .8 200* 3.0 2.6 115
TOWER 10500 5.3 3.5 151* 6.9 4.0 172
WEBBER SPRINGS 9250 2.9 1.9 153* 5.8 3.1 187
WILLOW CREEK PASS 9540 2.6 1.1 236* 2.3 2.0 115
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Basin wide percent of average 168* 166
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 2.9 2.2 132* 3.9 2.5 156
CASPER MTN. 7850 1.2 1.7 71 1.5 2.5 60
DEADMAN HILL 10220 2.1 2.2 95 3.4 2.5 136
DEER PARK 9700 1.5 2.6 58 2.8 2.5 112
LAPRELE CREEK 8375 1.0 1.1 91* 1.4 1.9 74
RENO HILL 8500 1.8 1.7 106 2.6 2.5 104
ROACH 9700 3.7 1.2 308* 4.8 2.3 209
SAND LAKE 10050 3.8 3.3 115* 4.5 3.1 145
SOUTH PASS 9040 1.2 1.5 80* 3.0 2.1 143
WINDY PEAK 7900 .8 .6 133* 1.4 1.7 82
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Basin wide percent of average 110* 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .6 0* 3.3 1.9 174
DIVIDE PEAK 8860 3.6 1.7 212* 5.5 2.7 204
OLD BATTLE 9920 4.6 3.1 148* 6.2 3.6 172
SANDSTONE RS 8150 .8 .6 133* 3.3 2.3 143
WHISKEY PARK 8950 2.4 1.7 141* 4.9 2.9 169
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Basin wide percent of average 148* 173
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.3 1.2 108* 2.0 1.8 111
BLIND BULL SUM 8900 .8 1.7 47* 2.1 2.2 95
EAST RIM DIVIDE 7930 .0 .7 0* 1.8 1.4 129
ELKHART PARK G.S. 9400 .4 .9 44* 2.1 1.9 111
GROS VENTRE SUMMIT 8750 1.7 1.4 121* 2.8 1.8 156
KENDALL R.S. 7740 .1 .7 14* 2.0 1.5 133
LOOMIS PARK 8240 .4 1.0 40* 2.1 1.8 117
NEW FORK LAKE 8340 .7 .6 117* 2.4 1.5 160
SNIDER BASIN 8060 .7 .8 87* 1.5 1.6 94
SPRING CREEK DIVIDE 9000 1.0 1.5 67* 2.2 2.6 85
TRIPLE PEAK 8500 1.1 1.2 92* 2.2 2.2 100
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Basin wide percent of average 70* 114
LOWER GREEN RIVER
HAMS FORK 7840 .3 .5 60* 2.0 1.5 133
HEWINTA 9500 -M .9 * 3.2 2.4 133
HICKERSON PARK 9100 .3 .5 60* 2.8 1.7 165
HOLE-IN-ROCK 9150 .9 .5 180* 2.6 1.6 162
INDIAN CREEK 9425 1.2 1.5 80* 2.4 2.6 92
KELLEY R.S. 8180 .8 1.0 80* 2.2 2.1 105
STEEL CREEK PARK 10100 1.6 1.6 100* 3.2 2.3 139
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Basin wide percent of average 91* 130
UPPER BEAR RIVER
BUG LAKE 7950 1.1 1.3 85* 2.3 2.3 100
HAYDEN FORK 9100 -M .9 * -M 2.4 *
KELLEY R.S. 8180 .8 1.0 80* 2.2 2.1 105
LILY LAKE 9050 .5 1.0 50* 3.4 2.4 142
MONTE CRISTO 8960 1.7 1.6 106* 3.9 2.8 139
SALT RIVER SUMMIT 7600 .2 .4 50* 1.9 1.9 100
TRIAL LAKE 9960 1.0 1.9 53* 4.1 2.8 146
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Basin wide percent of average 74* 124
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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.