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 FRIDAY: AUGUST 22 , 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 .3 .0 * 50.1 31.8 158
COTTONWOOD CREEK 7600 .0 .0 100* 49.6 35.3 141
GRANITE CREEK 6770 .0 .0 100* 43.5 35.3 123
GRASSY LAKE 7265 .0 .0 100* 73.7 52.6 140
GROS VENTRE SUMMIT 8775 .0 .0 100* 32.5 23.9 136
LEWIS LAKE DIVIDE 7860 .0 .0 100* 73.8 53.5 138
PHILLIPS BENCH 8200 .0 .0 100* 62.4 42.2 148
SALT RIVER SUMMIT 7600 .1 .0 * 35.5 25.3 140
SNAKE RIVER STATION 6920 .0 .0 100* 51.7 36.9 140
SPRING CREEK DIVIDE 9000 .0 .0 100* 44.9 37.9 118
THUMB DIVIDE 7980 .0 .0 100* 47.4 29.8 159
TOGWOTEE PASS 9580 .1 .0 * 54.5 40.2 136
TWO OCEAN PLATEAU 9360 .0 .0 100* 61.7 43.9 141
WILLOW CREEK 8450 .0 .0 100* 68.2 45.3 151
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Basin wide percent of average * 140
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 43.9 30.8 143
BLACK BEAR 7950 -M .0 * 85.9 58.1 148
CANYON 7940 .0 .0 100* 35.5 24.7 144
FISHER CREEK 9100 .0 .0 100* 71.0 55.3 128
MADISON PLATEAU 7750 .0 .0 100* 53.9 39.5 136
NORTHEAST ENTRANCE 7350 .0 .0 100* 33.4 22.4 149
PARKER PEAK 9400 .1 .0 * 36.9 28.5 129
SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145
THUMB DIVIDE 7980 .0 .0 100* 47.4 29.8 159
TWO OCEAN PLATEAU 9360 .0 .0 100* 61.7 43.9 141
WHISKEY CREEK 6800 .0 .0 100* 42.0 33.8 124
WHITE MILL 8700 .0 .0 100* 55.8 43.8 127
WOLVERINE 7650 .0 .0 100* 26.1 24.0 109
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Basin wide percent of average * 137
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 38.7 27.0 143
CHRISTINA LAKE 9980 -M .0 * -M 28.5 *
COLD SPRINGS 9630 .1 .0 * 25.6 20.6 124
HOBBS PARK 10100 .0 .0 100* 26.3 26.0 101
LITTLE WARM 9620 .0 .0 100* 33.1 24.3 136
SOUTH PASS 9040 .0 .0 100* 34.1 28.8 118
ST. LAWRENCE ALT 8620 .1 .0 * 23.6 19.0 124
TOGWOTEE PASS 9580 .1 .0 * 54.5 40.2 136
TOWNSEND CREEK 8700 .1 .0 * 25.6 23.1 111
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Basin wide percent of average * 125
BIGHORN BASIN
BALD MTN. 9375 .1 .0 * 37.1 30.3 122
BEAR TRAP MEADOW 7900 .0 .0 100* 23.8 18.5 129
BLACKWATER 9780 .0 .0 100* 46.5 33.0 141
BONE SPRINGS DIV 9350 .0 .0 100* 32.8 28.8 114
EVENING STAR 9200 .0 .0 100* 57.1 40.0 143
GRAVE SPRINGS 8550 .1 -M * 23.9 21.6 111
KIRWIN 9550 .0 .0 100* 31.2 23.0 136
LOST CREEK 8080 -M .0 * -M 23.9 *
MARQUETTE 8760 .2 .0 * 29.1 23.3 125
MIDDLE POWDER 7760 .0 .0 100* 31.2 23.5 133
OWL CREEK 8975 .0 .0 100* 18.4 15.2 121
POWDER RIVER PASS 9480 .1 .0 * 33.5 23.3 144
SHELL CREEK 9580 .1 .0 * 28.3 25.8 110
SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145
SYLVAN ROAD 8120 .0 .0 100* 38.3 29.0 132
TIMBER CREEK 7950 .1 .0 * 21.9 18.7 117
YOUNTS PEAK 8350 .0 .0 100* 40.8 28.3 144
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Basin wide percent of average * 130
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 46.5 33.0 141
EVENING STAR 9200 .0 .0 100* 57.1 40.0 143
KIRWIN 9550 .0 .0 100* 31.2 23.0 136
MARQUETTE 8760 .2 .0 * 29.1 23.3 125
SYLVAN LAKE 8420 .0 .0 100* 48.8 33.7 145
SYLVAN ROAD 8120 .0 .0 100* 38.3 29.0 132
YOUNTS PEAK 8350 .0 .0 100* 40.8 28.3 144
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Basin wide percent of average * 139
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 23.8 18.5 129
BONE SPRINGS DIV 9350 .0 .0 100* 32.8 28.8 114
BURGESS JUNCTION 7880 .0 .0 100* 28.8 22.8 126
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 34.7 27.4 127
DOME LAKE 8880 .0 .0 100* 31.4 25.3 124
GRAVE SPRINGS 8550 .1 -M * 23.9 21.6 111
HANSEN SAWMILL 8760 .0 .0 100* 25.3 18.4 138
LOST CREEK 8080 -M .0 * -M 23.9 *
MIDDLE POWDER 7760 .0 .0 100* 31.2 23.5 133
POWDER RIVER PASS 9480 .1 .0 * 33.5 23.3 144
SUCKER CREEK 8880 .0 .0 100* 32.1 26.3 122
TIE CREEK 6870 .2 -M * 33.7 21.9 154
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Basin wide percent of average * 128
BELLE FOURCHE
BLIND PARK 6890 .1 .0 * 30.8 25.9 119
NORTH RAPID CREEK 6130 .2 -M * 35.8 -M *
WARREN PEAK 6520 .0 .0 100* 34.3 19.8 173
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Basin wide percent of average * 142
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 46.8 35.2 133
DIVIDE PEAK 8800 .0 .0 100* 36.1 34.7 104
ELK RIVER 8700 .0 .0 100* 38.1 28.7 133
JOE WRIGHT 10120 .0 .0 100* 44.1 42.1 105
NORTH FRENCH CREEK 10100 .0 .0 100* 45.4 37.4 121
OLD BATTLE 10000 .0 .0 100* 54.7 44.9 122
SOUTH BRUSH CREEK 8400 .0 .0 100* -M 28.5 *
TOWER 10500 .3 .0 * 69.9 55.2 127
WEBBER SPRINGS 9200 -M .0 * -M 38.3 *
WILLOW CREEK PASS 9540 .0 .0 100* 29.1 23.6 123
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Basin wide percent of average * 121
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 33.9 31.9 106
CASPER MTN. 7900 .0 .0 100* 32.3 27.9 116
CHRISTINA LAKE 9980 -M .0 * -M 28.5 *
DEADMAN HILL 10220 .0 .0 100* 31.8 30.3 105
LAPRELE CREEK 8320 .0 .0 100* 25.5 23.2 110
RENO HILL 8400 .1 .0 * 32.2 29.1 111
ROACH 9700 .0 .0 100* 35.5 35.3 101
SAND LAKE 10080 -M .0 * 45.2 32.9 137
SOUTH PASS 9040 .0 .0 100* 34.1 28.8 118
WINDY PEAK 7840 .1 .0 * 23.1 20.5 113
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * 19.5 23.7 82
DIVIDE PEAK 8800 .0 .0 100* 36.1 34.7 104
OLD BATTLE 10000 .0 .0 100* 54.7 44.9 122
SANDSTONE RS 8150 .0 .0 100* 31.7 30.2 105
WHISKEY PARK 8950 .0 .0 100* 49.0 42.4 116
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Basin wide percent of average * 109
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .4 .0 * 24.7 24.4 101
BLIND BULL SUM 8650 .0 .0 100* 47.9 33.1 145
EAST RIM DIVIDE 7930 .1 .0 * 27.4 22.8 120
ELKHART PARK G.S. 9400 .1 .0 * 30.2 24.0 126
GROS VENTRE SUMMIT 8775 .0 .0 100* 32.5 23.9 136
KENDALL R.S. 7740 .0 .0 100* 34.1 23.3 146
LOOMIS PARK 8240 .0 .0 100* 39.6 28.2 140
NEW FORK LAKE 8340 .0 .0 100* 23.4 21.7 108
SNIDER BASIN 8250 .1 .0 * 26.3 22.8 115
SPRING CREEK DIVIDE 9000 .0 .0 100* 44.9 37.9 118
TRIPLE PEAK 8500 .0 .0 100* 54.0 44.3 122
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Basin wide percent of average * 126
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.3 20.0 122
HEWINTA 9500 .1 .0 * 25.5 23.8 107
HICKERSON PARK 9150 .0 .0 100* 18.8 20.0 94
HOLE-IN-ROCK 9150 .0 .0 100* 19.7 20.0 98
INDIAN CREEK 9425 .0 .0 100* 43.1 36.7 117
KELLEY R.S. 8180 .0 .0 100* 40.6 28.1 144
STEEL CREEK PARK 10100 .0 .0 100* 27.3 27.7 99
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Basin wide percent of average * 113
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * 42.0 27.7 152
HAYDEN FORK 9400 .0 .0 100* 38.6 31.1 124
KELLEY R.S. 8180 .0 .0 100* 40.6 28.1 144
LILY LAKE 9050 -M .0 * 30.0 25.6 117
MONTE CRISTO 8960 .0 .0 100* 48.0 37.7 127
SALT RIVER SUMMIT 7600 .1 .0 * 35.5 25.3 140
TRIAL LAKE 9960 .3 .0 * 47.0 36.9 127
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Basin wide percent of average * 133
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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.