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 , 2000
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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 .0 .7 -0* 2.4 1.9 126
COTTONWOOD CREEK 7600 1.0 .7 143* 3.1 2.1 148
GRANITE CREEK 6770 .0 .6 0* 2.9 2.2 132
GRASSY LAKE 7265 1.3 1.0 130* 3.9 3.2 122
GROS VENTRE SUMMIT 8775 1.7 1.0 170* 1.7 1.5 113
LEWIS LAKE DIVIDE 7860 .9 1.3 69* 3.6 3.3 109
PHILLIPS BENCH 8200 1.9 1.1 173* 3.0 2.5 120
SALT RIVER SUMMIT 7600 .2 .0 * 2.6 1.6 162
SNAKE RIVER STATION 6920 .2 .6 33* 3.3 2.2 150
SPRING CREEK DIVIDE 9000 2.3 1.3 177* 2.9 2.0 145
THUMB DIVIDE 7980 .0 .5 -0* 2.2 1.8 122
TOGWOTEE PASS 9580 2.6 2.2 118* 2.7 2.4 113
TWO OCEAN PLATEAU 9360 2.9 3.4 85 3.0 2.7 111
WILLOW CREEK 8450 .6 1.1 55* 4.0 2.7 148
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Basin wide percent of average 99* 129
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.5 2.9 86 2.5 1.8 139
BLACK BEAR 7950 4.0 2.6 154* 5.4 3.4 159
CANYON 7940 .7 .8 87* 2.3 1.7 135
FISHER CREEK 9100 2.5 2.5 100* 3.7 2.9 128
MADISON PLATEAU 7750 1.8 1.4 129* 4.0 2.4 167
NORTHEAST ENTRANCE 7350 .0 .3 0* 1.8 1.5 120
PARKER PEAK 9400 1.9 3.6 53 3.0 2.1 143
SYLVAN LAKE 8420 1.9 2.4 79 3.9 2.5 156
THUMB DIVIDE 7980 .0 .5 -0* 2.2 1.8 122
TWO OCEAN PLATEAU 9360 2.9 3.4 85 3.0 2.7 111
WHISKEY CREEK 6800 .1 .8 12* 3.7 2.1 176
WHITE MILL 8700 1.8 1.8 100* 2.8 2.6 108
WOLVERINE 7650 .0 .3 0* 2.3 1.5 153
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Basin wide percent of average 86* 140
WIND RIVER
BURROUGHS CREEK 8750 .7 .9 78* 1.2 1.5 80
COLD SPRINGS 9630 .3 .9 33* .8 1.8 44
DEER PARK 9700 2.2 -M * 2.3 -M *
HOBBS PARK 10100 1.5 2.0 75 1.3 1.9 68
LITTLE WARM 9620 1.2 1.0 120* 1.4 1.7 82
SOUTH PASS 9040 1.1 2.5 44 1.4 2.1 67
ST. LAWRENCE ALT 8620 .2 .8 25 .8 1.6 50
TOGWOTEE PASS 9580 2.6 2.2 118* 2.7 2.4 113
TOWNSEND CREEK 8700 .6 1.0 60* 1.4 1.8 78
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Basin wide percent of average 73* 74
BIGHORN BASIN
BALD MTN. 9375 1.8 2.5 72 2.2 2.2 100
BEAR TRAP MEADOW 7900 .0 .7 0* .5 1.5 33
BLACKWATER 9780 2.9 2.4 121* 2.8 2.3 122
BONE SPRINGS DIV 9350 1.7 2.6 65 2.2 2.1 105
EVENING STAR 9200 1.7 3.7 46 3.8 2.8 136
GRAVE SPRINGS 8550 .0 1.0 -0* .9 1.8 50
KIRWIN 9550 1.3 1.5 87 1.8 1.5 120
MARQUETTE 8760 .0 1.0 -0 1.3 1.7 76
MIDDLE POWDER 7760 .0 1.3 -0* 1.2 2.0 60
OWL CREEK 8975 .4 .5 80 1.0 1.0 100
POWDER RIVER PASS 9480 .3 1.2 25* 1.7 1.8 94
SHELL CREEK 9580 2.4 2.4 100 2.3 1.8 128
SYLVAN LAKE 8420 1.9 2.4 79 3.9 2.5 156
SYLVAN ROAD 8120 .0 1.5 0 3.0 2.1 143
TIMBER CREEK 7950 -M .3 * 1.4 1.3 108
YOUNTS PEAK 8350 1.5 2.2 68 2.8 1.8 156
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Basin wide percent of average 59 109
SHOSHONE RIVER
BLACKWATER 9780 2.9 2.4 121* 2.8 2.3 122
EVENING STAR 9200 1.7 3.7 46 3.8 2.8 136
KIRWIN 9550 1.3 1.5 87 1.8 1.5 120
MARQUETTE 8760 .0 1.0 -0 1.3 1.7 76
SYLVAN LAKE 8420 1.9 2.4 79 3.9 2.5 156
SYLVAN ROAD 8120 .0 1.5 0 3.0 2.1 143
YOUNTS PEAK 8350 1.5 2.2 68 2.8 1.8 156
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Basin wide percent of average 63 132
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .7 0* .5 1.5 33
BIG GOOSE 7990 .2 -M * 1.5 -M *
BONE SPRINGS DIV 9350 1.7 2.6 65 2.2 2.1 105
BURGESS JUNCTION 7880 .5 1.5 33 1.4 1.9 74
CLOUD PEAK RESERVOIR 9860 .2 1.3 15* 1.9 2.0 95
DOME LAKE 8880 1.1 1.8 61 2.0 2.2 91
GRAVE SPRINGS 8550 .0 1.0 -0* .9 1.8 50
HANSEN SAWMILL 8760 .0 .8 0 1.3 1.5 87
MIDDLE POWDER 7760 .0 1.3 -0* 1.2 2.0 60
POWDER RIVER PASS 9480 .3 1.2 25* 1.7 1.8 94
SUCKER CREEK 8880 .3 1.2 25* 1.2 2.1 57
TIE CREEK 6870 .1 -M * 1.6 1.8 89
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Basin wide percent of average 31* 77
BELLE FOURCHE
BLIND PARK 6890 .0 1.6 0 .5 1.7 29
COLE CANYON 5910 .1 1.6 6 1.0 1.4 71
NORTH RAPID CREEK 6130 .0 -M * 1.2 -M *
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Basin wide percent of average 3 48
UPPER N. PLATTE RIVER
COLUMBINE 9400 .1 1.5 7* .6 2.4 25
DIVIDE PEAK 8800 .0 2.0 0* 1.4 3.0 47
ELK RIVER 8700 .1 .4 25* .6 2.2 27
JOE WRIGHT 10120 1.7 3.0 57 .8 3.4 24
NORTH FRENCH CREEK 10100 .2 2.1 10* .6 2.2 27
OLD BATTLE 10000 1.0 3.5 29* 1.1 3.1 35
SOUTH BRUSH CREEK 8400 .1 .4 25* .2 2.2 9
TOWER 10500 .6 5.8 10 1.2 3.9 31
WEBBER SPRINGS 9200 .0 1.8 0* .2 2.9 7
WILLOW CREEK PASS 9540 .5 1.0 50* .7 1.7 41
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Basin wide percent of average 20* 27
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .1 1.8 6* .3 2.3 13
CASPER MTN. 7900 .4 1.2 33* .8 2.4 33
DEADMAN HILL 10220 1.2 1.3 92* .5 2.3 22
DEER PARK 9700 2.2 -M * 2.3 -M *
LAPRELE CREEK 8320 .1 .9 11* .6 1.5 40
RENO HILL 8400 .0 1.6 0 .4 2.4 17
ROACH 9700 .0 1.3 -0* .3 2.6 12
SAND LAKE 10080 .3 3.0 10* .5 2.5 20
SOUTH PASS 9040 1.1 2.5 44 1.4 2.1 67
WINDY PEAK 7840 .0 .2 -0* .5 1.2 42
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Basin wide percent of average 23* 27
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .4 -0* .7 1.7 41
DIVIDE PEAK 8800 .0 2.0 0* 1.4 3.0 47
OLD BATTLE 10000 1.0 3.5 29* 1.1 3.1 35
SANDSTONE RS 8150 .1 .8 12* 1.1 1.6 69
WHISKEY PARK 8950 .1 2.2 5* .8 1.8 44
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Basin wide percent of average 13* 46
UPPER GREEN RIVER
BIG SANDY OPENING 9100 2.3 .7 329* 2.4 1.5 160
BLIND BULL SUM 8650 1.9 2.2 86* 2.5 1.9 132
EAST RIM DIVIDE 7930 .4 .4 100* 1.9 1.5 127
ELKHART PARK G.S. 9400 2.4 .9 267* 2.6 1.5 173
GROS VENTRE SUMMIT 8775 1.7 1.0 170* 1.7 1.5 113
KENDALL R.S. 7740 .0 .0 100* 1.6 1.5 107
LOOMIS PARK 8240 1.6 .5 320* 2.2 1.7 129
NEW FORK LAKE 8340 .5 .0 * 1.8 1.4 129
SNIDER BASIN 8250 .4 .0 * 1.5 1.5 100
SPRING CREEK DIVIDE 9000 2.3 1.3 177* 2.9 2.0 145
TRIPLE PEAK 8500 1.3 .9 144* 2.7 2.7 100
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Basin wide percent of average 176* 127
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * 1.7 1.3 131
HEWINTA 9500 .0 .2 -0* 2.1 2.3 91
HICKERSON PARK 9150 .0 .2 0* 2.1 2.0 105
HOLE-IN-ROCK 9150 .0 .1 -0* 2.0 2.0 100
INDIAN CREEK 9425 2.5 1.6 156* 2.6 2.2 118
KELLEY R.S. 8180 .8 .5 160* 2.5 1.7 147
STEEL CREEK PARK 10100 1.0 1.9 53 1.9 2.3 83
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Basin wide percent of average 96* 108
UPPER BEAR RIVER
BUG LAKE 7950 .1 1.1 9* 1.7 3.2 53
HAYDEN FORK 9400 .4 .9 44* 2.6 2.4 108
KELLEY R.S. 8180 .8 .5 160* 2.5 1.7 147
LILY LAKE 9050 .8 1.0 80* 2.1 2.6 81
MONTE CRISTO 8960 .0 1.4 0* 2.7 3.4 79
SALT RIVER SUMMIT 7600 .2 .0 * 2.6 1.6 162
TRIAL LAKE 9960 1.8 1.8 100* 3.6 2.8 129
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Basin wide percent of average 58* 101
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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.