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 31 , 2010
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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 .6 233* 3.3 2.0 165
COTTONWOOD CREEK 7670 2.0 .9 222* 4.7 3.0 157
GRAND TARGHEE 9260 4.9 -M * 4.8 -M *
GRANITE CREEK 6770 1.2 .5 240* 3.0 1.8 167
GRASSY LAKE 7265 1.3 1.4 93* 4.1 3.3 124
GROS VENTRE SUMMIT 8750 1.5 1.4 107* 2.0 1.8 111
GUNSIGHT PASS 9820 1.9 -M * 2.5 -M *
LEWIS LAKE DIVIDE 7850 2.8 1.2 233* 4.7 3.1 152
PHILLIPS BENCH 8200 3.0 1.4 214* 4.0 2.4 167
SALT RIVER SUMMIT 7760 .3 .4 75* 2.7 1.9 142
SNAKE RIVER STATION 6920 .9 .6 150* 3.2 2.3 139
SPRING CREEK DIVIDE 9000 2.7 1.5 180* 4.0 2.5 160
THUMB DIVIDE 7980 1.0 .8 125* 1.9 2.1 90
TOGWOTEE PASS 9580 3.1 2.6 119* 3.9 2.8 139
TWO OCEAN PLATEAU 9240 3.3 3.0 110* 3.0 3.1 97
WILLOW CREEK 8380 2.0 1.8 111* 5.4 3.7 146
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Basin wide percent of average 146* 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 2.0 2.7 74 2.4 2.1 114
BLACK BEAR 8170 1.8 2.8 64* 4.0 3.4 118
CANYON 7870 .1 .6 17* 1.7 1.8 94
FISHER CREEK 9100 1.8 2.7 67* 2.9 3.3 88
MADISON PLATEAU 7750 .8 1.6 50* 2.4 2.5 96
NORTHEAST ENTRANCE 7350 .1 .3 33* 1.9 1.5 127
PARKER PEAK 9400 1.3 2.6 50 2.5 2.3 109
SYLVAN LAKE 8420 .9 1.9 47* 2.5 2.6 96
THUMB DIVIDE 7980 1.0 .8 125* 1.9 2.1 90
TWO OCEAN PLATEAU 9240 3.3 3.0 110* 3.0 3.1 97
WHISKEY CREEK 6800 .0 .8 0* 1.9 2.2 86
WHITE MILL 8700 1.3 2.0 65* 2.6 2.7 96
WOLVERINE 7650 .0 .5 0* 1.6 1.8 89
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Basin wide percent of average 65* 100
WIND RIVER
BURROUGHS CREEK 8750 1.7 1.0 170* 2.0 1.6 125
CASTLE CREEK 8400 .5 -M * .9 -M *
COLD SPRINGS 9630 .6 1.0 60 1.0 1.9 53
DEER PARK 9700 1.7 2.3 74 2.3 2.5 92
HOBBS PARK 10100 1.0 2.3 43 1.2 2.1 57
LITTLE WARM 9370 1.1 1.0 110* 1.1 1.7 65
SOUTH PASS 9040 .8 1.5 53* 1.7 2.1 81
ST. LAWRENCE ALT 8620 .0 .9 0 .6 1.7 35
TOGWOTEE PASS 9580 3.1 2.6 119* 3.9 2.8 139
TOWNSEND CREEK 8700 .2 1.1 18 1.8 2.1 86
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Basin wide percent of average 74 84
BIGHORN BASIN
BALD MTN. 9380 2.5 2.8 89 3.0 2.4 125
BEAR TRAP MEADOW 8200 .5 .6 83 1.9 1.7 112
BLACKWATER 9780 2.4 3.1 77 2.5 2.7 93
BONE SPRINGS DIV 9350 1.6 2.6 62 1.5 2.5 60
EVENING STAR 9200 2.2 2.7 81* 3.2 2.8 114
GRAVE SPRINGS 8550 .6 1.2 50 1.1 2.1 52
KIRWIN 9550 1.4 1.9 74 1.8 1.8 100
MARQUETTE 8760 .0 2.0 0 .9 2.3 39
MIDDLE POWDER 7760 .7 1.3 54* 1.0 2.6 38
OWL CREEK 8975 .0 .9 0 .7 1.2 58
POWDER RIVER PASS 9480 2.1 1.3 162 2.8 1.9 147
SHELL CREEK 9580 2.1 2.7 78 1.9 2.0 95
SYLVAN LAKE 8420 .9 1.9 47* 2.5 2.6 96
SYLVAN ROAD 7120 .0 .5 0* 2.0 2.1 95
TIMBER CREEK 7950 .2 1.1 18 .5 1.6 31
YOUNTS PEAK 8350 1.4 1.4 100* 2.0 1.8 111
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Basin wide percent of average 66 86
SHOSHONE RIVER
BLACKWATER 9780 2.4 3.1 77 2.5 2.7 93
EVENING STAR 9200 2.2 2.7 81* 3.2 2.8 114
KIRWIN 9550 1.4 1.9 74 1.8 1.8 100
MARQUETTE 8760 .0 2.0 0 .9 2.3 39
SYLVAN LAKE 8420 .9 1.9 47* 2.5 2.6 96
SYLVAN ROAD 7120 .0 .5 0* 2.0 2.1 95
YOUNTS PEAK 8350 1.4 1.4 100* 2.0 1.8 111
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Basin wide percent of average 61* 93
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .5 .6 83 1.9 1.7 112
BIG GOOSE 7990 .1 .8 13* 1.8 2.1 86
BONE SPRINGS DIV 9350 1.6 2.6 62 1.5 2.5 60
BURGESS JUNCTION 7880 .5 1.5 33 1.6 2.2 73
CLOUD PEAK RESERVOIR 9860 1.1 1.6 69* 2.5 2.6 96
DOME LAKE 8880 .4 1.9 21 1.9 2.5 76
GRAVE SPRINGS 8550 .6 1.2 50 1.1 2.1 52
HANSEN SAWMILL 8360 .2 .9 22 .8 1.8 44
LITTLE GOOSE 8870 .0 -M * 3.1 -M *
MIDDLE POWDER 7760 .7 1.3 54* 1.0 2.6 38
POWDER RIVER PASS 9480 2.1 1.3 162 2.8 1.9 147
SOLDIER PARK 8720 .1 -M * 1.2 -M *
SUCKER CREEK 8880 .8 1.4 57 1.5 2.4 63
TIE CREEK 6870 .0 .9 0 1.2 2.5 48
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Basin wide percent of average 54 73
BELLE FOURCHE
BLIND PARK 6890 .6 .5 120* 4.7 2.6 181
COLE CANYON 5910 .3 1.0 30 1.7 1.9 89
NORTH RAPID CREEK 6130 .1 .5 20* 3.9 2.5 156
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Basin wide percent of average 50* 147
UPPER N. PLATTE RIVER
COLUMBINE 9160 2.5 .8 313* 5.6 2.4 233
DIVIDE PEAK 8880 .3 1.8 17* 2.8 2.7 104
ELK RIVER 8700 1.0 .6 167* 3.7 2.2 168
JOE WRIGHT 10120 3.8 2.5 152* 7.5 3.4 221
NORTH FRENCH CREEK 10130 3.2 3.1 103* 4.4 3.3 133
OLD BATTLE 10000 4.0 3.0 133* 5.5 3.6 153
SAGE CREEK BASIN 7850 .0 1.0 0* 2.9 1.6 181
SOUTH BRUSH CREEK 8440 .7 .7 100* 3.1 2.6 119
TOWER 10500 8.2 3.5 234* 9.4 4.0 235
WEBBER SPRINGS 9250 1.7 1.9 89* 5.2 3.1 168
WILLOW CREEK PASS 9540 2.5 1.2 208* -M 2.0 *
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Basin wide percent of average 139* 173
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 2.3 2.2 105* 3.9 2.5 156
CASPER MTN. 7900 .3 1.7 18* 2.7 2.5 108
DEADMAN HILL 10220 2.9 2.2 132 5.0 2.5 200
DEER PARK 9700 1.7 2.3 74 2.3 2.5 92
LAPRELE CREEK 8375 .5 1.0 50* 1.6 1.9 84
RENO HILL 8400 .7 1.7 41 2.3 2.5 92
ROACH 9700 2.1 1.2 175* 4.1 2.3 178
SAND LAKE 10050 4.5 3.3 136* 4.7 3.0 157
SOUTH PASS 9040 .8 1.5 53* 1.7 2.1 81
WINDY PEAK 7900 .1 .6 17* 2.3 1.7 135
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Basin wide percent of average 90* 130
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .5 0* 3.4 1.9 179
DIVIDE PEAK 8880 .3 1.8 17* 2.8 2.7 104
OLD BATTLE 10000 4.0 3.0 133* 5.5 3.6 153
SANDSTONE RS 8150 .0 .5 0* 3.8 2.3 165
WHISKEY PARK 8950 2.3 1.7 135* 4.7 2.9 162
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Basin wide percent of average 88* 151
UPPER GREEN RIVER
BIG SANDY OPENING 9080 1.2 1.2 100* 2.4 1.8 133
BLIND BULL SUM 8650 3.1 1.6 194* 2.5 2.2 114
EAST RIM DIVIDE 7930 .7 .6 117* 1.4 1.4 100
ELKHART PARK G.S. 9400 .9 .9 100* 1.7 2.0 85
GROS VENTRE SUMMIT 8750 1.5 1.4 107* 2.0 1.8 111
GUNSIGHT PASS 9820 1.9 -M * 2.5 -M *
KENDALL R.S. 7740 .7 .7 100* 2.0 1.6 125
LOOMIS PARK 8240 1.3 .9 144* 2.4 1.8 133
NEW FORK LAKE 8340 .8 .6 133* 1.3 1.6 81
POCKET CREEK 9360 1.3 -M * 2.1 -M *
SNIDER BASIN 8060 1.7 .7 243* 3.0 1.6 188
SPRING CREEK DIVIDE 9000 2.7 1.5 180* 4.0 2.5 160
TRIPLE PEAK 8500 2.9 1.2 242* 4.6 2.2 209
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Basin wide percent of average 155* 133
LOWER GREEN RIVER
HAMS FORK 7840 .4 .4 100* 2.3 1.4 164
HEWINTA 9519 .3 .9 33* 3.2 2.4 133
HICKERSON PARK 9145 .0 .5 0* 1.3 1.7 76
HOLE-IN-ROCK 9150 .5 .5 100* 1.6 1.7 94
INDIAN CREEK 9425 2.0 1.5 133* 3.1 2.6 119
KELLEY R.S. 8180 1.3 1.0 130* 3.3 2.1 157
STEEL CREEK PARK 10200 1.5 1.6 94* 3.6 2.3 157
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Basin wide percent of average 94* 130
UPPER BEAR RIVER
BUG LAKE 7950 1.2 1.3 92* 4.0 2.4 167
HAYDEN FORK 9212 1.3 .9 144* 5.4 2.4 225
KELLEY R.S. 8180 1.3 1.0 130* 3.3 2.1 157
LILY LAKE 9156 1.2 1.0 120* 4.3 2.4 179
MONTE CRISTO 8960 1.7 1.6 106* 4.5 2.8 161
SALT RIVER SUMMIT 7760 .3 .4 75* 2.7 1.9 142
TRIAL LAKE 9992 4.1 1.9 216* 6.1 2.8 218
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Basin wide percent of average 137* 180
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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.