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: SEPTEMBER 9 , 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 .0 .0 100* 50.7 32.8 155
COTTONWOOD CREEK 7600 .0 .0 100* 49.9 36.3 137
GRANITE CREEK 6770 .1 .0 * 43.6 36.6 119
GRASSY LAKE 7265 .0 .0 100* 74.2 54.0 137
GROS VENTRE SUMMIT 8775 .1 .0 * -M 24.7 *
LEWIS LAKE DIVIDE 7860 .0 .0 100* 74.4 54.9 136
PHILLIPS BENCH 8200 .1 .0 * 63.1 43.3 146
SALT RIVER SUMMIT 7600 .2 .0 * 35.6 26.2 136
SNAKE RIVER STATION 6920 .0 .0 100* 52.3 37.9 138
SPRING CREEK DIVIDE 9000 .2 .0 * -M 38.9 *
THUMB DIVIDE 7980 .0 .0 100* 48.2 30.7 157
TOGWOTEE PASS 9580 .1 .0 * 54.9 41.3 133
TWO OCEAN PLATEAU 9360 .1 .0 * 62.1 45.1 138
WILLOW CREEK 8450 .0 .0 100* 68.7 46.5 148
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Basin wide percent of average * 140
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 44.0 31.7 139
BLACK BEAR 7950 -M .0 * 87.3 59.6 146
CANYON 7940 .0 .0 100* 36.4 26.0 140
FISHER CREEK 9100 .1 .0 * 71.9 56.9 126
MADISON PLATEAU 7750 .1 .0 * 55.8 40.9 136
NORTHEAST ENTRANCE 7350 .1 .0 * 34.7 23.6 147
PARKER PEAK 9400 .1 .0 * 37.8 29.9 126
SYLVAN LAKE 8420 .0 .0 100* 49.6 35.2 141
THUMB DIVIDE 7980 .0 .0 100* 48.2 30.7 157
TWO OCEAN PLATEAU 9360 .1 .0 * 62.1 45.1 138
WHISKEY CREEK 6800 .1 .0 * 43.6 35.0 125
WHITE MILL 8700 .1 .0 * 57.0 45.2 126
WOLVERINE 7650 .0 .0 100* 27.9 25.2 111
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Basin wide percent of average * 135
WIND RIVER
BURROUGHS CREEK 8750 .1 .0 * 39.2 28.1 140
CHRISTINA LAKE 9980 -M .0 * -M 29.5 *
COLD SPRINGS 9630 .2 .0 * 26.1 21.5 121
HOBBS PARK 10100 .0 .0 100* 26.4 27.0 98
LITTLE WARM 9620 .0 .0 100* 33.5 25.4 132
SOUTH PASS 9040 .0 .0 100* 34.3 29.7 115
ST. LAWRENCE ALT 8620 .3 .0 * 24.1 19.8 122
TOGWOTEE PASS 9580 .1 .0 * 54.9 41.3 133
TOWNSEND CREEK 8700 .1 .0 * 25.8 24.0 108
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Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .1 .0 * 36.8 31.4 117
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.4 124
BLACKWATER 9780 .0 .0 100* 47.3 35.0 135
BONE SPRINGS DIV 9350 .0 .0 100* 33.2 30.2 110
EVENING STAR 9200 .0 .0 100* 58.3 42.2 138
GRAVE SPRINGS 8550 .1 -M * 24.4 22.7 107
KIRWIN 9550 .0 .0 100* 32.2 24.3 133
LOST CREEK 8080 -M .0 * -M 24.8 *
MARQUETTE 8760 .3 .0 * 29.8 24.4 122
MIDDLE POWDER 7760 .2 .0 * 31.1 24.4 127
OWL CREEK 8975 .0 .0 100* 18.6 16.0 116
POWDER RIVER PASS 9480 .3 .0 * 34.5 24.2 143
SHELL CREEK 9580 .1 .0 * 28.7 26.8 107
SYLVAN LAKE 8420 .0 .0 100* 49.6 35.2 141
SYLVAN ROAD 8120 .0 .0 100* 38.9 30.5 128
TIMBER CREEK 7950 -M .0 * 22.1 19.7 112
YOUNTS PEAK 8350 1.6 .0 * 42.0 29.6 142
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Basin wide percent of average * 127
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 47.3 35.0 135
EVENING STAR 9200 .0 .0 100* 58.3 42.2 138
KIRWIN 9550 .0 .0 100* 32.2 24.3 133
MARQUETTE 8760 .3 .0 * 29.8 24.4 122
SYLVAN LAKE 8420 .0 .0 100* 49.6 35.2 141
SYLVAN ROAD 8120 .0 .0 100* 38.9 30.5 128
YOUNTS PEAK 8350 1.6 .0 * 42.0 29.6 142
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Basin wide percent of average * 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.4 124
BONE SPRINGS DIV 9350 .0 .0 100* 33.2 30.2 110
BURGESS JUNCTION 7880 .0 .0 100* 29.0 23.7 122
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.7 28.5 125
DOME LAKE 8880 .0 .0 100* 32.1 26.4 122
GRAVE SPRINGS 8550 .1 -M * 24.4 22.7 107
HANSEN SAWMILL 8760 .0 .0 100* 26.0 19.4 134
LOST CREEK 8080 -M .0 * -M 24.8 *
MIDDLE POWDER 7760 .2 .0 * 31.1 24.4 127
POWDER RIVER PASS 9480 .3 .0 * 34.5 24.2 143
SUCKER CREEK 8880 .0 .0 100* 32.3 27.4 118
TIE CREEK 6870 .2 -M * 33.9 22.8 149
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Basin wide percent of average * 125
BELLE FOURCHE
BLIND PARK 6890 .3 .0 * 31.7 27.1 117
NORTH RAPID CREEK 6130 .5 -M * 37.2 -M *
WARREN PEAK 6520 .1 .0 * 34.6 20.9 166
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Basin wide percent of average * 138
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 47.3 36.2 131
DIVIDE PEAK 8800 .0 .0 100* 36.5 35.9 102
ELK RIVER 8700 .0 .0 100* 38.7 29.7 130
JOE WRIGHT 10120 .0 .0 100* 45.8 43.7 105
NORTH FRENCH CREEK 10100 .0 .0 100* 46.0 38.6 119
OLD BATTLE 10000 .2 .0 * 55.0 46.2 119
SOUTH BRUSH CREEK 8400 .1 .0 * 29.4 29.6 99
TOWER 10500 .1 .0 * 70.8 56.7 125
WEBBER SPRINGS 9200 .0 .0 100* 48.0 39.5 122
WILLOW CREEK PASS 9540 .0 .0 100* 29.9 24.8 121
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Basin wide percent of average * 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 40.3 32.9 122
CASPER MTN. 7900 .1 .0 * 32.5 28.7 113
CHRISTINA LAKE 9980 -M .0 * -M 29.5 *
DEADMAN HILL 10220 .0 .0 100* 33.2 31.3 106
LAPRELE CREEK 8320 .0 .0 100* 26.4 24.2 109
RENO HILL 8400 .1 .0 * 32.2 29.8 108
ROACH 9700 .0 .0 100* 35.8 36.3 99
SAND LAKE 10080 .0 .0 100* 45.6 33.9 135
SOUTH PASS 9040 .0 .0 100* 34.3 29.7 115
WINDY PEAK 7840 .3 .0 * 23.6 21.1 112
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * 19.8 24.7 80
DIVIDE PEAK 8800 .0 .0 100* 36.5 35.9 102
OLD BATTLE 10000 .2 .0 * 55.0 46.2 119
SANDSTONE RS 8150 .0 .0 100* 32.5 31.6 103
WHISKEY PARK 8950 .0 .0 100* 49.6 43.4 114
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 24.8 25.2 98
BLIND BULL SUM 8650 .0 .0 100* 48.3 33.9 142
EAST RIM DIVIDE 7930 .1 .0 * 27.9 23.6 118
ELKHART PARK G.S. 9400 .1 .0 * 31.0 24.8 125
GROS VENTRE SUMMIT 8775 .1 .0 * -M 24.7 *
KENDALL R.S. 7740 .0 .0 100* -M 24.1 *
LOOMIS PARK 8240 -M .0 * -M 29.2 *
NEW FORK LAKE 8340 .0 .0 100* 23.8 22.5 106
SNIDER BASIN 8250 .1 .0 * -M 23.6 *
SPRING CREEK DIVIDE 9000 .2 .0 * -M 38.9 *
TRIPLE PEAK 8500 -M .0 * -M 45.5 *
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Basin wide percent of average * 120*
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.8 20.7 120
HEWINTA 9500 .1 .0 * 26.9 24.7 109
HICKERSON PARK 9150 .0 .0 100* 19.5 20.9 93
HOLE-IN-ROCK 9150 .0 .0 100* 20.6 20.9 99
INDIAN CREEK 9425 .0 .0 100* 43.5 37.7 115
KELLEY R.S. 8180 .0 .0 100* 40.7 29.1 140
STEEL CREEK PARK 10100 .0 .0 100* 28.1 29.0 97
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Basin wide percent of average * 112
UPPER BEAR RIVER
BUG LAKE 7950 .3 .0 * 43.0 28.6 150
HAYDEN FORK 9400 .0 .0 100* 38.7 32.1 121
KELLEY R.S. 8180 .0 .0 100* 40.7 29.1 140
LILY LAKE 9050 .3 .0 * 30.9 26.6 116
MONTE CRISTO 8960 .4 .0 * 50.0 38.8 129
SALT RIVER SUMMIT 7600 .2 .0 * 35.6 26.2 136
TRIAL LAKE 9960 -M .0 * 47.8 38.1 125
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Basin wide percent of average * 131
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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.