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 22 , 2001
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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 .3 33* 1.6 1.4 114
COTTONWOOD CREEK 7600 .2 .3 67* 1.2 1.5 80
GRANITE CREEK 6770 .0 .2 0* 1.5 1.6 94
GRASSY LAKE 7265 1.4 .5 280* 2.2 2.2 100
GROS VENTRE SUMMIT 8775 1.0 .5 200* .6 1.1 55
LEWIS LAKE DIVIDE 7860 1.3 .6 217* 1.9 2.3 83
PHILLIPS BENCH 8200 1.6 .5 320* 1.7 1.8 94
SALT RIVER SUMMIT 7600 .1 .0 * .8 1.2 67
SNAKE RIVER STATION 6920 .1 .2 50* 1.5 1.6 94
SPRING CREEK DIVIDE 9000 1.7 .6 283* 1.9 1.4 136
THUMB DIVIDE 7980 .5 .2 250* 1.0 1.3 77
TOGWOTEE PASS 9580 2.2 1.5 147* 2.3 1.7 135
TWO OCEAN PLATEAU 9360 2.0 2.2 91* 1.6 1.9 84
WILLOW CREEK 8450 .2 .5 40* 1.4 1.9 74
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Basin wide percent of average 152* 93
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.1 2.1 100* 2.1 1.3 162
BLACK BEAR 7950 -M 1.8 * -M 2.4 *
CANYON 7940 .8 .4 200* 1.1 1.2 92
FISHER CREEK 9100 2.3 1.6 144* 2.7 2.0 135
MADISON PLATEAU 7750 1.3 .9 144* 2.1 1.7 124
NORTHEAST ENTRANCE 7350 .0 .1 0* 1.0 1.0 100
PARKER PEAK 9400 1.3 2.5 52 1.0 1.5 67
SYLVAN LAKE 8420 1.8 1.7 106* 2.2 1.8 122
THUMB DIVIDE 7980 .5 .2 250* 1.0 1.3 77
TWO OCEAN PLATEAU 9360 2.0 2.2 91* 1.6 1.9 84
WHISKEY CREEK 6800 1.1 .4 275* 1.4 1.5 93
WHITE MILL 8700 2.1 1.3 162* 1.9 1.8 106
WOLVERINE 7650 .0 .2 0* 1.6 1.1 145
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Basin wide percent of average 112* 109
WIND RIVER
BURROUGHS CREEK 8750 1.1 .5 220* 1.3 1.1 118
COLD SPRINGS 9630 .1 .5 20* .5 1.3 38
DEER PARK 9700 .9 -M * 1.0 -M *
HOBBS PARK 10100 .8 1.3 62* .8 1.4 57
LITTLE WARM 9620 1.1 .6 183* 1.2 1.2 100
SOUTH PASS 9040 .2 1.8 11 1.1 1.5 73
ST. LAWRENCE ALT 8620 .2 .5 40* .3 1.2 25
TOGWOTEE PASS 9580 2.2 1.5 147* 2.3 1.7 135
TOWNSEND CREEK 8700 .2 .6 33* .4 1.3 31
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Basin wide percent of average 81* 74
BIGHORN BASIN
BALD MTN. 9375 2.9 1.9 153* 2.9 1.6 181
BEAR TRAP MEADOW 7900 1.0 .4 250* 1.8 1.1 164
BLACKWATER 9780 1.3 1.8 72* 1.3 1.6 81
BONE SPRINGS DIV 9350 2.6 2.1 124 2.8 1.5 187
EVENING STAR 9200 1.8 2.6 69* 2.8 2.0 140
GRAVE SPRINGS 8550 1.1 .7 157* 2.3 1.3 177
KIRWIN 9550 1.1 1.0 110* 1.2 1.1 109
MARQUETTE 8760 .7 .7 100* 1.1 1.2 92
MIDDLE POWDER 7760 1.3 .9 144* 2.1 1.4 150
OWL CREEK 8975 .1 .4 25* .4 .7 57
POWDER RIVER PASS 9480 1.2 .8 150* 2.1 1.3 162
SHELL CREEK 9580 2.6 1.9 137 2.6 1.3 200
SYLVAN LAKE 8420 1.8 1.7 106* 2.2 1.8 122
SYLVAN ROAD 8120 .6 1.0 60* 1.9 1.5 127
TIMBER CREEK 7950 .1 .2 50* .8 .9 89
YOUNTS PEAK 8350 1.4 1.5 93* 1.3 1.3 100
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Basin wide percent of average 110* 137
SHOSHONE RIVER
BLACKWATER 9780 1.3 1.8 72* 1.3 1.6 81
EVENING STAR 9200 1.8 2.6 69* 2.8 2.0 140
KIRWIN 9550 1.1 1.0 110* 1.2 1.1 109
MARQUETTE 8760 .7 .7 100* 1.1 1.2 92
SYLVAN LAKE 8420 1.8 1.7 106* 2.2 1.8 122
SYLVAN ROAD 8120 .6 1.0 60* 1.9 1.5 127
YOUNTS PEAK 8350 1.4 1.5 93* 1.3 1.3 100
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Basin wide percent of average 84* 112
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.0 .4 250* 1.8 1.1 164
BIG GOOSE 7990 1.2 -M * 2.8 -M *
BONE SPRINGS DIV 9350 2.6 2.1 124 2.8 1.5 187
BURGESS JUNCTION 7880 1.5 1.1 136* 2.7 1.4 193
CLOUD PEAK RESERVOIR 9860 1.5 .9 167* 3.1 1.4 221
DOME LAKE 8880 1.9 1.3 146* 3.0 1.6 188
GRAVE SPRINGS 8550 1.1 .7 157* 2.3 1.3 177
HANSEN SAWMILL 8760 .2 .5 40* 1.6 1.1 145
MIDDLE POWDER 7760 1.3 .9 144* 2.1 1.4 150
POWDER RIVER PASS 9480 1.2 .8 150* 2.1 1.3 162
SUCKER CREEK 8880 2.2 .8 275* 3.6 1.5 240
TIE CREEK 6870 .0 -M * 2.6 1.3 200
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Basin wide percent of average 153* 186
BELLE FOURCHE
BLIND PARK 6890 .2 1.1 18* 2.3 1.2 192
COLE CANYON 5910 .0 .4 0* 1.2 .9 133
NORTH RAPID CREEK 6130 .3 -M * 2.2 -M *
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Basin wide percent of average 13* 167
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 1.0 20* 2.2 1.7 129
DIVIDE PEAK 8800 .9 1.2 75* 1.8 2.1 86
ELK RIVER 8700 .1 .2 50* 1.4 1.6 87
JOE WRIGHT 10120 .6 1.9 32* 1.6 2.4 67
NORTH FRENCH CREEK 10100 2.6 1.3 200* 2.6 1.6 162
OLD BATTLE 10000 1.0 2.5 40* 2.2 2.2 100
SOUTH BRUSH CREEK 8400 .1 .2 50* 1.6 1.6 100
TOWER 10500 1.8 3.7 49* 2.2 2.7 81
WEBBER SPRINGS 9200 .3 1.1 27* 1.6 2.0 80
WILLOW CREEK PASS 9540 .0 .6 0* .7 1.2 58
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Basin wide percent of average 55* 94
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.5 1.3 115* 2.2 1.6 138
CASPER MTN. 7900 2.1 .8 262* 3.1 1.7 182
DEADMAN HILL 10220 .5 .8 62* 1.1 1.6 69
DEER PARK 9700 .9 -M * 1.0 -M *
LAPRELE CREEK 8320 -M .4 * 2.7 1.0 270
RENO HILL 8400 2.1 1.1 191* 3.0 1.7 176
ROACH 9700 .2 .8 25* .9 1.8 50
SAND LAKE 10080 2.8 1.8 156* 2.9 1.8 161
SOUTH PASS 9040 .2 1.8 11 1.1 1.5 73
WINDY PEAK 7840 .2 .1 200* 2.6 .8 325
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Basin wide percent of average 113* 145
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .2 100* 1.2 1.2 100
DIVIDE PEAK 8800 .9 1.2 75* 1.8 2.1 86
OLD BATTLE 10000 1.0 2.5 40* 2.2 2.2 100
SANDSTONE RS 8150 .0 .3 0* 1.9 1.2 158
WHISKEY PARK 8950 .7 1.3 54* 2.1 1.3 162
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Basin wide percent of average 51* 115
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .9 .3 300* .6 1.1 55
BLIND BULL SUM 8650 1.9 .9 211* 1.5 1.4 107
EAST RIM DIVIDE 7930 .5 .2 250* .6 1.0 60
ELKHART PARK G.S. 9400 .8 .4 200* .7 1.1 64
GROS VENTRE SUMMIT 8775 1.0 .5 200* .6 1.1 55
KENDALL R.S. 7740 .0 .0 100* .8 1.0 80
LOOMIS PARK 8240 1.1 .2 550* 1.2 1.2 100
NEW FORK LAKE 8340 .4 .0 * .8 .9 89
SNIDER BASIN 8250 .8 .0 * 1.4 1.0 140
SPRING CREEK DIVIDE 9000 1.7 .6 283* 1.9 1.4 136
TRIPLE PEAK 8500 1.2 .4 300* 2.2 1.9 116
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Basin wide percent of average 260* 94
LOWER GREEN RIVER
HAMS FORK 7840 .1 .0 * .2 .9 22
HEWINTA 9500 .0 .1 0* 1.3 1.6 81
HICKERSON PARK 9150 .1 .1 100* .6 1.4 43
HOLE-IN-ROCK 9150 .0 .0 100* 1.2 1.4 86
INDIAN CREEK 9425 .8 .7 114* .8 1.6 50
KELLEY R.S. 8180 .2 .2 100* .5 1.2 42
STEEL CREEK PARK 10100 .7 1.3 54* .9 1.6 56
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Basin wide percent of average 75* 57
UPPER BEAR RIVER
BUG LAKE 7950 .0 .8 0* .4 2.2 18
HAYDEN FORK 9400 .1 .5 20* 1.1 1.7 65
KELLEY R.S. 8180 .2 .2 100* .5 1.2 42
LILY LAKE 9050 .0 .6 0* 1.1 1.8 61
MONTE CRISTO 8960 .0 1.0 0* .6 2.4 25
SALT RIVER SUMMIT 7600 .1 .0 * .8 1.2 67
TRIAL LAKE 9960 .0 1.2 0* 1.3 2.0 65
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Basin wide percent of average 7* 46
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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 1961-90.
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.