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 31 , 2011
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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 .6 17* 3.4 2.0 170
COTTONWOOD CREEK 7670 .2 .9 22* 4.6 3.0 153
GRAND TARGHEE 9260 2.8 -M * 5.4 -M *
GRANITE CREEK 6770 .1 .5 20* 2.5 1.8 139
GRASSY LAKE 7265 .3 1.4 21* 5.2 3.3 158
GROS VENTRE SUMMIT 8750 .4 1.4 29* 2.3 1.8 128
GUNSIGHT PASS 9820 .7 -M * 2.6 -M *
LEWIS LAKE DIVIDE 7850 .2 1.2 17* 4.4 3.1 142
PHILLIPS BENCH 8200 .1 1.4 7* 2.6 2.4 108
SALT RIVER SUMMIT 7760 .3 .4 75* 2.2 1.9 116
SNAKE RIVER STATION 6920 .0 .6 0* 3.8 2.3 165
SPRING CREEK DIVIDE 9000 1.3 1.5 87* 3.3 2.5 132
THUMB DIVIDE 7980 .1 .8 13* 2.9 2.1 138
TOGWOTEE PASS 9580 1.5 2.6 58* 3.3 2.8 118
TWO OCEAN PLATEAU 9240 4.2 3.0 140* 3.9 3.1 126
WILLOW CREEK 8380 .2 1.8 11* 5.3 3.7 143
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Basin wide percent of average 50* 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 2.4 2.7 89 3.0 2.1 143
BLACK BEAR 8170 2.1 2.8 75* 5.4 3.4 159
CANYON 7870 .2 .6 33* 2.1 1.8 117
FISHER CREEK 9100 2.0 2.7 74* 4.5 3.3 136
MADISON PLATEAU 7750 .1 1.6 6* 3.9 2.5 156
NORTHEAST ENTRANCE 7350 .0 .3 0* 2.0 1.5 133
PARKER PEAK 9400 1.5 2.6 58 3.6 2.3 157
SYLVAN LAKE 8420 .0 1.9 0* 3.9 2.6 150
THUMB DIVIDE 7980 .1 .8 13* 2.9 2.1 138
TWO OCEAN PLATEAU 9240 4.2 3.0 140* 3.9 3.1 126
WHISKEY CREEK 6800 .1 .8 13* 3.2 2.2 145
WHITE MILL 8700 .9 2.0 45* 3.7 2.7 137
WOLVERINE 7650 .0 .5 0* 3.0 1.8 167
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Basin wide percent of average 61* 144
WIND RIVER
BURROUGHS CREEK 8750 .3 1.0 30* 1.6 1.6 100
CASTLE CREEK 8400 .0 -M * 1.3 -M *
COLD SPRINGS 9630 .7 1.0 70 2.1 1.9 111
DEER PARK 9700 .9 2.3 39 2.8 2.5 112
HOBBS PARK 10100 1.9 2.3 83 2.6 2.1 124
LITTLE WARM 9370 .0 1.0 0* 1.8 1.7 106
SOUTH PASS 9040 .5 1.5 33* 2.3 2.1 110
ST. LAWRENCE ALT 8620 .0 .9 0 1.4 1.7 82
TOGWOTEE PASS 9580 1.5 2.6 58* 3.3 2.8 118
TOWNSEND CREEK 8700 .4 1.1 36 2.7 2.1 129
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Basin wide percent of average 45 111
BIGHORN BASIN
BALD MTN. 9380 3.6 2.8 129 3.8 2.4 158
BEAR TRAP MEADOW 8200 .4 .6 67 2.0 1.7 118
BLACKWATER 9780 3.3 3.1 106 3.9 2.7 144
BONE SPRINGS DIV 9350 3.6 2.6 138 4.4 2.5 176
EVENING STAR 9200 1.5 2.7 56* 4.3 2.8 154
GRAVE SPRINGS 8550 .0 1.2 0 2.2 2.1 105
KIRWIN 9550 1.9 1.9 100 3.1 1.8 172
MARQUETTE 8760 .0 -M * 3.5 2.3 152
MIDDLE POWDER 7760 .3 1.3 23* 4.2 2.6 162
OWL CREEK 8975 .8 .9 89 1.7 1.2 142
POWDER RIVER PASS 9480 2.0 1.3 154 3.2 1.9 168
SHELL CREEK 9580 4.1 2.7 152 3.9 2.0 195
SYLVAN LAKE 8420 .0 1.9 0* 3.9 2.6 150
SYLVAN ROAD 7120 .0 .5 0* 2.2 2.1 105
TIMBER CREEK 7950 .0 1.1 0 3.7 1.6 231
YOUNTS PEAK 8350 .8 1.4 57* 2.6 1.8 144
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Basin wide percent of average 86 154
SHOSHONE RIVER
BLACKWATER 9780 3.3 3.1 106 3.9 2.7 144
EVENING STAR 9200 1.5 2.7 56* 4.3 2.8 154
KIRWIN 9550 1.9 1.9 100 3.1 1.8 172
MARQUETTE 8760 .0 -M * 3.5 2.3 152
SYLVAN LAKE 8420 .0 1.9 0* 3.9 2.6 150
SYLVAN ROAD 7120 .0 .5 0* 2.2 2.1 105
YOUNTS PEAK 8350 .8 1.4 57* 2.6 1.8 144
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Basin wide percent of average 65* 146
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .6 67 2.0 1.7 118
BIG GOOSE 7990 1.3 .8 163* 4.6 2.1 219
BONE SPRINGS DIV 9350 3.6 2.6 138 4.4 2.5 176
BURGESS JUNCTION 7880 1.4 1.5 93 4.6 2.2 209
CLOUD PEAK RESERVOIR 9860 2.1 1.6 131* 4.1 2.6 158
DOME LAKE 8880 2.2 1.9 116 4.7 2.5 188
GRAVE SPRINGS 8550 .0 1.2 0 2.2 2.1 105
HANSEN SAWMILL 8360 .4 .9 44 2.1 1.8 117
LITTLE GOOSE 8870 1.6 -M * 5.1 -M *
MIDDLE POWDER 7760 .3 1.3 23* 4.2 2.6 162
POWDER RIVER PASS 9480 2.0 1.3 154 3.2 1.9 168
SOLDIER PARK 8720 .0 -M * 2.8 -M *
SUCKER CREEK 8880 2.9 1.4 207 4.5 2.4 188
TIE CREEK 6870 .0 .9 0 4.6 2.5 184
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Basin wide percent of average 104 168
BELLE FOURCHE
BLIND PARK 6890 .0 .5 0* 1.2 2.6 46
COLE CANYON 5910 .0 1.0 0 1.4 1.9 74
NORTH RAPID CREEK 6130 .0 .5 0* .8 2.5 32
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Basin wide percent of average 0* 49
UPPER N. PLATTE RIVER
BLACKHALL MTN 9820 2.3 -M * 3.8 -M *
CINNABAR PARK 9574 1.1 1.6 69* 3.4 2.5 136
COLUMBINE 9160 .3 .8 38* 2.8 2.4 117
DIVIDE PEAK 8880 .4 1.8 22* 3.1 2.7 115
ELK RIVER 8700 .2 .6 33* 2.4 2.2 109
JOE WRIGHT 10120 .5 2.5 20* 3.7 3.4 109
NORTH FRENCH CREEK 10130 2.5 3.1 81* 3.9 3.3 118
OLD BATTLE 10000 2.3 3.0 77* 3.8 3.6 106
SAGE CREEK BASIN 7850 .0 1.0 0* 2.0 1.6 125
SOUTH BRUSH CREEK 8440 .4 .7 57* 2.9 2.6 112
TOWER 10500 2.1 3.5 60* 3.7 4.0 93
WEBBER SPRINGS 9250 .4 1.9 21* 3.3 3.1 106
WILLOW CREEK PASS 9540 1.7 1.2 142* 2.2 2.0 110
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Basin wide percent of average 55* 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .8 2.2 36* 3.2 2.5 128
CASPER MTN. 7900 1.2 1.7 71* 5.1 2.5 204
DEADMAN HILL 10220 2.6 2.2 118 3.2 2.5 128
DEER PARK 9700 .9 2.3 39 2.8 2.5 112
LAPRELE CREEK 8375 .1 1.0 10* 2.3 1.9 121
RENO HILL 8400 1.3 1.7 76 3.4 2.5 136
ROACH 9700 1.4 1.2 117* 3.2 2.3 139
SAND LAKE 10050 3.1 3.3 94* 4.1 3.0 137
SOUTH PASS 9040 .5 1.5 33* 2.3 2.1 110
WINDY PEAK 7900 .1 .6 17* 1.5 1.7 88
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Basin wide percent of average 68* 132
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .5 0* 1.6 1.9 84
DIVIDE PEAK 8880 .4 1.8 22* 3.1 2.7 115
OLD BATTLE 10000 2.3 3.0 77* 3.8 3.6 106
SANDSTONE RS 8150 .0 .5 0* 1.6 2.3 70
WHISKEY PARK 8950 .3 1.7 18* 3.3 2.9 114
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Basin wide percent of average 40* 100
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.0 1.2 83* 2.0 1.8 111
BLIND BULL SUM 8650 .7 1.6 44* 2.1 2.2 95
EAST RIM DIVIDE 7930 .4 .6 67* 2.2 1.4 157
ELKHART PARK G.S. 9400 .9 .9 100* 2.8 2.0 140
GROS VENTRE SUMMIT 8750 .4 1.4 29* 2.3 1.8 128
GUNSIGHT PASS 9820 .7 -M * 2.6 -M *
KENDALL R.S. 7740 .2 .7 29* 2.2 1.6 138
LOOMIS PARK 8240 .1 .9 11* 2.5 1.8 139
NEW FORK LAKE 8340 .6 .6 100* 2.6 1.6 163
POCKET CREEK 9360 1.8 -M * 2.7 -M *
SNIDER BASIN 8060 .2 .7 29* 1.7 1.6 106
SPRING CREEK DIVIDE 9000 1.3 1.5 87* 3.3 2.5 132
TRIPLE PEAK 8500 1.0 1.2 83* 3.1 2.2 141
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Basin wide percent of average 60* 131
LOWER GREEN RIVER
HAMS FORK 7840 .1 .4 25* 2.6 1.4 186
HEWINTA 9519 -M .9 * 2.9 2.4 121
HICKERSON PARK 9145 .0 .5 0* 3.5 1.7 206
HOLE-IN-ROCK 9150 .2 .5 40* 3.2 1.7 188
INDIAN CREEK 9425 1.8 1.5 120* 3.4 2.6 131
KELLEY R.S. 8180 .4 1.0 40* 2.9 2.1 138
STEEL CREEK PARK 10200 .0 1.6 0* 3.5 2.3 152
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Basin wide percent of average 45* 155
UPPER BEAR RIVER
BUG LAKE 7950 .4 1.3 31* 1.6 2.4 67
HAYDEN FORK 9212 .3 .9 33* 4.1 2.4 171
KELLEY R.S. 8180 .4 1.0 40* 2.9 2.1 138
LILY LAKE 9156 .0 1.0 0* 2.8 2.4 117
MONTE CRISTO 8960 .4 1.6 25* 2.4 2.8 86
SALT RIVER SUMMIT 7760 .3 .4 75* 2.2 1.9 116
TRIAL LAKE 9992 1.2 1.9 63* 2.5 2.8 89
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Basin wide percent of average 37* 110
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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.