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 THURSDAY: SEPTEMBER 11 , 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 * 51.1 32.9 155
COTTONWOOD CREEK 7600 .1 .0 * 51.0 36.4 140
GRANITE CREEK 6770 .2 .0 * 44.0 36.7 120
GRASSY LAKE 7265 .0 .0 100* 74.5 54.2 137
GROS VENTRE SUMMIT 8775 .2 .0 * 32.8 24.8 132
LEWIS LAKE DIVIDE 7860 .0 .0 100* 74.6 55.1 135
PHILLIPS BENCH 8200 .1 .0 * 64.4 43.4 148
SALT RIVER SUMMIT 7600 .3 .0 * 36.5 26.3 139
SNAKE RIVER STATION 6920 .0 .0 100* 52.5 38.0 138
SPRING CREEK DIVIDE 9000 .2 .0 * 45.3 39.0 116
THUMB DIVIDE 7980 .1 .0 * 48.4 30.8 157
TOGWOTEE PASS 9580 .1 .0 * 55.2 41.4 133
TWO OCEAN PLATEAU 9360 .2 .0 * 62.3 45.3 138
WILLOW CREEK 8450 .1 .0 * 68.8 46.7 147
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Basin wide percent of average * 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 44.5 31.8 140
BLACK BEAR 7950 .0 .0 100* 87.8 59.8 147
CANYON 7940 .0 .0 100* 36.7 26.2 140
FISHER CREEK 9100 .1 .0 * 73.0 57.1 128
MADISON PLATEAU 7750 .1 .0 * 56.1 41.0 137
NORTHEAST ENTRANCE 7350 .1 .0 * 35.5 23.7 150
PARKER PEAK 9400 .3 .0 * 38.0 30.1 126
SYLVAN LAKE 8420 .1 .0 * 50.1 35.4 142
THUMB DIVIDE 7980 .1 .0 * 48.4 30.8 157
TWO OCEAN PLATEAU 9360 .2 .0 * 62.3 45.3 138
WHISKEY CREEK 6800 .2 .0 * 43.9 35.1 125
WHITE MILL 8700 .1 .0 * 58.1 45.3 128
WOLVERINE 7650 .0 .0 100* 28.2 25.3 111
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Basin wide percent of average * 136
WIND RIVER
BURROUGHS CREEK 8750 .1 .0 * 39.5 28.3 140
CHRISTINA LAKE 9980 -M .0 * -M 29.7 *
COLD SPRINGS 9630 .2 .0 * 26.1 21.7 120
HOBBS PARK 10100 .0 .0 100* 26.4 27.2 97
LITTLE WARM 9620 .0 .0 100* 34.1 25.6 133
SOUTH PASS 9040 .0 .0 100* 34.2 29.8 115
ST. LAWRENCE ALT 8620 .3 .0 * 24.2 19.9 122
TOGWOTEE PASS 9580 .1 .0 * 55.2 41.4 133
TOWNSEND CREEK 8700 .1 .0 * 25.7 24.2 106
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Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .1 .0 * 37.2 31.6 118
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.5 124
BLACKWATER 9780 .1 .0 * 47.8 35.2 136
BONE SPRINGS DIV 9350 .1 .0 * 33.2 30.4 109
EVENING STAR 9200 .0 .0 100* 58.9 42.5 139
GRAVE SPRINGS 8550 .1 -M * 24.4 22.8 107
KIRWIN 9550 -M .0 * -M 24.5 *
LOST CREEK 8080 -M .0 * -M 25.0 *
MARQUETTE 8760 .4 .0 * 29.9 24.6 122
MIDDLE POWDER 7760 .1 .0 * 31.4 24.6 128
OWL CREEK 8975 .0 .0 100* 18.6 16.1 116
POWDER RIVER PASS 9480 .3 .0 * 34.8 24.4 143
SHELL CREEK 9580 .1 .0 * 28.8 27.0 107
SYLVAN LAKE 8420 .1 .0 * 50.1 35.4 142
SYLVAN ROAD 8120 .1 .0 * 39.2 30.7 128
TIMBER CREEK 7950 -M .0 * 22.4 19.9 113
YOUNTS PEAK 8350 1.7 .0 * 42.3 29.7 142
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Basin wide percent of average * 126
SHOSHONE RIVER
BLACKWATER 9780 .1 .0 * 47.8 35.2 136
EVENING STAR 9200 .0 .0 100* 58.9 42.5 139
KIRWIN 9550 -M .0 * -M 24.5 *
MARQUETTE 8760 .4 .0 * 29.9 24.6 122
SYLVAN LAKE 8420 .1 .0 * 50.1 35.4 142
SYLVAN ROAD 8120 .1 .0 * 39.2 30.7 128
YOUNTS PEAK 8350 1.7 .0 * 42.3 29.7 142
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Basin wide percent of average * 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.5 124
BONE SPRINGS DIV 9350 .1 .0 * 33.2 30.4 109
BURGESS JUNCTION 7880 .0 .0 100* 29.1 23.8 122
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.8 28.7 125
DOME LAKE 8880 .1 .0 * 32.0 26.5 121
GRAVE SPRINGS 8550 .1 -M * 24.4 22.8 107
HANSEN SAWMILL 8760 .0 .0 100* 26.0 19.6 133
LOST CREEK 8080 -M .0 * -M 25.0 *
MIDDLE POWDER 7760 .1 .0 * 31.4 24.6 128
POWDER RIVER PASS 9480 .3 .0 * 34.8 24.4 143
SUCKER CREEK 8880 .0 .0 100* 32.7 27.6 118
TIE CREEK 6870 .2 -M * 34.1 22.9 149
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Basin wide percent of average * 125
BELLE FOURCHE
BLIND PARK 6890 .3 .0 * 31.6 27.3 116
NORTH RAPID CREEK 6130 .5 -M * 37.6 -M *
WARREN PEAK 6520 .1 .0 * 34.8 21.0 166
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Basin wide percent of average * 137
UPPER N. PLATTE RIVER
COLUMBINE 9400 .1 .0 * 47.4 36.3 131
DIVIDE PEAK 8800 .0 .0 100* 36.5 36.0 101
ELK RIVER 8700 .0 .0 100* 38.7 29.8 130
JOE WRIGHT 10120 .1 .0 * 45.8 43.9 104
NORTH FRENCH CREEK 10100 .0 .0 100* 46.1 38.8 119
OLD BATTLE 10000 .2 .0 * 55.1 46.4 119
SOUTH BRUSH CREEK 8400 .2 .0 * 29.6 29.8 99
TOWER 10500 .1 .0 * 70.8 56.9 124
WEBBER SPRINGS 9200 .0 .0 100* 48.0 39.7 121
WILLOW CREEK PASS 9540 .0 .0 100* 30.0 25.0 120
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Basin wide percent of average * 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 40.4 33.0 122
CASPER MTN. 7900 .0 .0 100* 32.5 28.8 113
CHRISTINA LAKE 9980 -M .0 * -M 29.7 *
DEADMAN HILL 10220 .0 .0 100* 33.2 31.5 105
LAPRELE CREEK 8320 .0 .0 100* 26.4 24.3 109
RENO HILL 8400 .1 .0 * 32.2 29.9 108
ROACH 9700 .0 .0 100* 35.9 36.4 99
SAND LAKE 10080 .0 .0 100* 45.6 34.1 134
SOUTH PASS 9040 .0 .0 100* 34.2 29.8 115
WINDY PEAK 7840 .3 .0 * 23.6 21.2 111
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * 19.8 24.8 80
DIVIDE PEAK 8800 .0 .0 100* 36.5 36.0 101
OLD BATTLE 10000 .2 .0 * 55.1 46.4 119
SANDSTONE RS 8150 .0 .0 100* 32.5 31.7 103
WHISKEY PARK 8950 .0 .0 100* 49.7 43.5 114
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 25.0 25.3 99
BLIND BULL SUM 8650 .0 .0 100* 48.4 34.0 142
EAST RIM DIVIDE 7930 .2 .0 * 28.2 23.7 119
ELKHART PARK G.S. 9400 .1 .0 * 31.3 24.9 126
GROS VENTRE SUMMIT 8775 .2 .0 * 32.8 24.8 132
KENDALL R.S. 7740 .0 .0 100* 34.7 24.2 143
LOOMIS PARK 8240 -M .0 * 41.0 29.3 140
NEW FORK LAKE 8340 .0 .0 100* 24.3 22.6 108
SNIDER BASIN 8250 .1 .0 * 26.7 23.7 113
SPRING CREEK DIVIDE 9000 .2 .0 * 45.3 39.0 116
TRIPLE PEAK 8500 -M .0 * 54.5 45.7 119
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Basin wide percent of average * 124
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.8 20.8 119
HEWINTA 9500 .1 .0 * 27.1 24.8 109
HICKERSON PARK 9150 .0 .0 100* 19.8 21.0 94
HOLE-IN-ROCK 9150 .0 .0 100* 20.8 21.0 99
INDIAN CREEK 9425 .0 .0 100* 43.4 37.9 115
KELLEY R.S. 8180 .1 .0 * 40.8 29.2 140
STEEL CREEK PARK 10100 .0 .0 100* 28.3 29.1 97
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Basin wide percent of average * 112
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * -M 28.8 *
HAYDEN FORK 9400 .0 .0 100* 39.9 32.2 124
KELLEY R.S. 8180 .1 .0 * 40.8 29.2 140
LILY LAKE 9050 .3 .0 * 31.2 26.7 117
MONTE CRISTO 8960 .5 .0 * 50.2 39.0 129
SALT RIVER SUMMIT 7600 .3 .0 * 36.5 26.3 139
TRIAL LAKE 9960 -M .0 * 48.3 38.3 126
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Basin wide percent of average * 129
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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.