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 WEDNESDAY: OCTOBER 29 , 1997
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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* 1.7 1.8 94
COTTONWOOD CREEK 7600 .6 .6 100* 2.3 2.0 115
GRANITE CREEK 6770 .2 .5 40* .7 2.1 33
GRASSY LAKE 7265 1.0 .9 111* 3.0 3.0 100
GROS VENTRE SUMMIT 8775 2.9 .9 322* 1.1 1.4 79
LEWIS LAKE DIVIDE 7860 .7 1.2 58* 2.3 3.1 74
PHILLIPS BENCH 8200 .7 1.0 70* 1.7 2.3 74
SALT RIVER SUMMIT 7600 .3 .0 * 2.2 1.5 147
SNAKE RIVER STATION 6920 -M .5 * -M 2.1 *
SPRING CREEK DIVIDE 9000 .3 1.2 25* 1.4 1.9 74
THUMB DIVIDE 7980 -M .4 * -M 1.7 *
TOGWOTEE PASS 9580 2.2 2.1 105* 2.1 2.3 91
TWO OCEAN PLATEAU 9360 2.9 3.1 94 2.8 2.5 112
WILLOW CREEK 8450 .6 1.0 60* 3.5 2.5 140
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Basin wide percent of average 93* 94
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 2.2 2.7 81 1.8 1.7 106
BLACK BEAR 7950 2.9 2.4 121* 3.7 3.2 116
CANYON 7940 1.3 .7 186* 2.7 1.6 169
FISHER CREEK 9100 2.2 2.3 96* 2.4 2.7 89
MADISON PLATEAU 7750 1.6 1.3 123* 2.7 2.3 117
NORTHEAST ENTRANCE 7350 .1 .2 50* 1.8 1.4 129
PARKER PEAK 9400 2.3 3.3 70 2.5 2.0 125
SYLVAN LAKE 8420 1.8 2.3 78* -M 2.3 *
THUMB DIVIDE 7980 -M .4 * -M 1.7 *
TWO OCEAN PLATEAU 9360 2.9 3.1 94 2.8 2.5 112
WHISKEY CREEK 6800 .6 .7 86* 2.1 2.0 105
WHITE MILL 8700 2.0 1.7 118* 2.2 2.4 92
WOLVERINE 7650 .2 .3 67* 2.0 1.4 143
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Basin wide percent of average 96* 115
WIND RIVER
BURROUGHS CREEK 8750 1.1 .8 138* 1.5 1.4 107
COLD SPRINGS 9630 1.8 .8 225* 2.4 1.7 141
DEER PARK 9700 .0 -M * .0 -M *
HOBBS PARK 10100 2.4 1.9 126 2.8 1.8 156
LITTLE WARM 9620 .9 .9 100* 2.2 1.6 138
SOUTH PASS 9040 1.7 2.4 71 2.7 2.0 135
ST. LAWRENCE ALT 8620 1.9 .7 271* 2.4 1.5 160
TOGWOTEE PASS 9580 2.2 2.1 105* 2.1 2.3 91
TOWNSEND CREEK 8700 1.9 .9 211* 2.9 1.7 171
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Basin wide percent of average 132* 136
BIGHORN BASIN
BALD MTN. 9375 2.7 2.4 113* 2.8 2.1 133
BEAR TRAP MEADOW 7900 .5 .6 83* 1.4 1.4 100
BLACKWATER 9780 2.5 2.3 109* 2.6 2.2 118
BONE SPRINGS DIV 9350 2.3 2.5 92 2.8 2.0 140
EVENING STAR 9200 1.9 3.4 56 3.3 2.6 127
GRAVE SPRINGS 8550 .7 -M * 1.8 1.7 106
KIRWIN 9550 -M 1.4 * -M 1.4 *
LOST CREEK 8080 -M 1.2 * -M 1.8 *
MARQUETTE 8760 3.8 .9 422 4.3 1.6 269
MIDDLE POWDER 7760 .8 1.2 67* 1.8 1.9 95
OWL CREEK 8975 1.4 .5 280 1.6 .9 178
POWDER RIVER PASS 9480 .4 1.1 36* 1.3 1.7 76
SHELL CREEK 9580 2.1 2.3 91 1.7 1.7 100
SYLVAN LAKE 8420 1.8 2.3 78* -M 2.3 *
SYLVAN ROAD 8120 .3 1.4 21 1.9 2.0 95
TIMBER CREEK 7950 2.2 .3 733* 3.1 1.2 258
YOUNTS PEAK 8350 2.3 2.1 110 1.6 1.7 94
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Basin wide percent of average 107* 130
SHOSHONE RIVER
BLACKWATER 9780 2.5 2.3 109* 2.6 2.2 118
EVENING STAR 9200 1.9 3.4 56 3.3 2.6 127
KIRWIN 9550 -M 1.4 * -M 1.4 *
MARQUETTE 8760 3.8 .9 422 4.3 1.6 269
SYLVAN LAKE 8420 1.8 2.3 78* -M 2.3 *
SYLVAN ROAD 8120 .3 1.4 21 1.9 2.0 95
YOUNTS PEAK 8350 2.3 2.1 110 1.6 1.7 94
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Basin wide percent of average 102 136
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .5 .6 83* 1.4 1.4 100
BONE SPRINGS DIV 9350 2.3 2.5 92 2.8 2.0 140
BURGESS JUNCTION 7880 .9 1.4 64 2.3 1.8 128
CLOUD PEAK RESERVOIR 9860 1.1 1.2 92* 3.2 1.9 168
DOME LAKE 8880 1.9 1.7 112 2.9 2.1 138
GRAVE SPRINGS 8550 .7 -M * 1.8 1.7 106
HANSEN SAWMILL 8760 1.1 .7 157* 2.0 1.4 143
LOST CREEK 8080 -M 1.2 * -M 1.8 *
MIDDLE POWDER 7760 .8 1.2 67* 1.8 1.9 95
POWDER RIVER PASS 9480 .4 1.1 36* 1.3 1.7 76
SUCKER CREEK 8880 1.4 1.1 127* 3.0 2.0 150
TIE CREEK 6870 1.5 -M * 3.0 1.7 176
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Basin wide percent of average 90* 130
BELLE FOURCHE
BLIND PARK 6890 .4 1.5 27 1.6 1.6 100
NORTH RAPID CREEK 6130 .6 -M * 1.1 -M *
WARREN PEAK 6520 .2 1.5 13 1.7 1.3 131
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Basin wide percent of average 20 114
UPPER N. PLATTE RIVER
COLUMBINE 9400 .8 1.4 57* 3.3 2.3 143
DIVIDE PEAK 8800 1.6 1.8 89* 3.3 2.8 118
ELK RIVER 8700 .1 .3 33* 3.0 2.1 143
JOE WRIGHT 10120 2.3 2.7 85 4.3 3.2 134
NORTH FRENCH CREEK 10100 2.2 1.9 116* 3.4 2.1 162
OLD BATTLE 10000 3.1 3.3 94* 4.7 2.9 162
SOUTH BRUSH CREEK 8400 .3 .3 100* 1.8 2.1 86
TOWER 10500 4.4 5.3 83 -M 3.6 *
WEBBER SPRINGS 9200 1.6 1.7 94* 3.9 2.7 144
WILLOW CREEK PASS 9540 1.7 .9 189* 2.1 1.6 131
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Basin wide percent of average 92* 137
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 1.3 1.7 76* 2.7 2.2 123
CASPER MTN. 7900 2.6 1.1 236* 2.7 2.3 117
DEADMAN HILL 10220 3.4 1.2 283* 2.9 2.2 132
DEER PARK 9700 .0 -M * .0 -M *
LAPRELE CREEK 8320 1.1 .8 138* 2.1 1.4 150
RENO HILL 8400 1.7 1.5 113* 2.1 2.3 91
ROACH 9700 1.5 1.2 125* 2.7 2.4 113
SAND LAKE 10080 3.6 2.7 133* 4.6 2.3 200
SOUTH PASS 9040 1.7 2.4 71 2.7 2.0 135
WINDY PEAK 7840 1.0 .2 500* 2.0 1.1 182
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Basin wide percent of average 140* 135
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .3 0* 3.2 1.6 200
DIVIDE PEAK 8800 1.6 1.8 89* 3.3 2.8 118
OLD BATTLE 10000 3.1 3.3 94* 4.7 2.9 162
SANDSTONE RS 8150 -M .7 * 3.0 1.5 200
WHISKEY PARK 8950 1.2 2.0 60* 3.7 1.7 218
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Basin wide percent of average 80* 170
UPPER GREEN RIVER
BIG SANDY OPENING 9100 1.3 .6 217* 1.3 1.4 93
BLIND BULL SUM 8650 .7 1.9 37* 1.3 1.8 72
EAST RIM DIVIDE 7930 .3 .3 100* .4 1.4 29
ELKHART PARK G.S. 9400 .7 .8 88* 1.5 1.4 107
GROS VENTRE SUMMIT 8775 2.9 .9 322* 1.1 1.4 79
KENDALL R.S. 7740 .3 .0 * .9 1.4 64
LOOMIS PARK 8240 .2 .4 50* .7 1.6 44
NEW FORK LAKE 8340 .7 .0 * 1.0 1.3 77
SNIDER BASIN 8250 .0 .0 100* .6 1.4 43
SPRING CREEK DIVIDE 9000 .3 1.2 25* 1.4 1.9 74
TRIPLE PEAK 8500 1.0 .8 125* 1.4 2.5 56
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Basin wide percent of average 107* 66
LOWER GREEN RIVER
HAMS FORK 7840 .3 .0 * .8 1.2 67
HEWINTA 9500 1.4 .2 700* 3.4 2.2 155
HICKERSON PARK 9150 3.0 .2 1500* 3.8 1.9 200
HOLE-IN-ROCK 9150 1.4 .1 1400* 3.2 1.9 168
INDIAN CREEK 9425 1.2 1.4 86* 1.2 2.1 57
KELLEY R.S. 8180 .5 .4 125* 1.2 1.6 75
STEEL CREEK PARK 10100 1.2 1.8 67* 4.2 2.2 191
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Basin wide percent of average 212* 136
UPPER BEAR RIVER
BUG LAKE 7950 .7 1.0 70* 1.9 3.0 63
HAYDEN FORK 9400 .0 .8 0* 2.7 2.3 117
KELLEY R.S. 8180 .5 .4 125* 1.2 1.6 75
LILY LAKE 9050 .8 .9 89* 2.7 2.4 113
MONTE CRISTO 8960 1.1 1.3 85* 2.3 3.2 72
SALT RIVER SUMMIT 7600 .3 .0 * 2.2 1.5 147
TRIAL LAKE 9960 .9 1.7 53* 2.1 2.6 81
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Basin wide percent of average 66* 91
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-M = Missing data
* = Data may not provide a valid measure of conditions.
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.