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: SEPTEMBER 3 , 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 .0 * 50.5 32.4 156
COTTONWOOD CREEK 7600 .0 .0 100* 49.8 35.9 139
GRANITE CREEK 6770 .1 .0 * 43.6 36.1 121
GRASSY LAKE 7265 .0 .0 100* 74.1 53.5 139
GROS VENTRE SUMMIT 8775 .0 .0 100* 32.6 24.4 134
LEWIS LAKE DIVIDE 7860 .1 .0 * 74.0 54.4 136
PHILLIPS BENCH 8200 .1 .0 * 62.9 42.8 147
SALT RIVER SUMMIT 7600 .2 .0 * 35.6 25.9 137
SNAKE RIVER STATION 6920 .0 .0 100* 51.9 37.5 138
SPRING CREEK DIVIDE 9000 .1 .0 * 45.2 38.5 117
THUMB DIVIDE 7980 .1 .0 * 47.9 30.3 158
TOGWOTEE PASS 9580 .1 .0 * 54.8 40.8 134
TWO OCEAN PLATEAU 9360 .2 .0 * 62.0 44.7 139
WILLOW CREEK 8450 .0 .0 100* 68.4 46.1 148
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Basin wide percent of average * 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 44.3 31.4 141
BLACK BEAR 7950 -M .0 * 86.5 59.0 147
CANYON 7940 .0 .0 100* 36.3 25.6 142
FISHER CREEK 9100 .1 .0 * 71.5 56.3 127
MADISON PLATEAU 7750 .1 .0 * 54.6 40.4 135
NORTHEAST ENTRANCE 7350 .1 .0 * 34.0 23.1 147
PARKER PEAK 9400 .2 .0 * 37.4 29.4 127
SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142
THUMB DIVIDE 7980 .1 .0 * 47.9 30.3 158
TWO OCEAN PLATEAU 9360 .2 .0 * 62.0 44.7 139
WHISKEY CREEK 6800 .1 .0 * 42.7 34.5 124
WHITE MILL 8700 .0 .0 100* 56.2 44.7 126
WOLVERINE 7650 .0 .0 100* 27.3 24.7 111
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Basin wide percent of average * 136
WIND RIVER
BURROUGHS CREEK 8750 .1 .0 * 39.1 27.7 141
CHRISTINA LAKE 9980 -M .0 * -M 29.1 *
COLD SPRINGS 9630 .2 .0 * 25.9 21.1 123
HOBBS PARK 10100 .0 .0 100* 26.4 26.6 99
LITTLE WARM 9620 .0 .0 100* 33.4 25.0 134
SOUTH PASS 9040 .0 .0 100* 34.2 29.3 117
ST. LAWRENCE ALT 8620 .2 .0 * 24.0 19.4 124
TOGWOTEE PASS 9580 .1 .0 * 54.8 40.8 134
TOWNSEND CREEK 8700 .1 .0 * 25.6 23.6 108
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Basin wide percent of average * 123
BIGHORN BASIN
BALD MTN. 9375 .1 .0 * 36.9 30.9 119
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.0 127
BLACKWATER 9780 .1 .0 * 47.3 34.3 138
BONE SPRINGS DIV 9350 .1 .0 * 33.0 29.6 111
EVENING STAR 9200 .0 .0 100* 57.5 41.5 139
GRAVE SPRINGS 8550 .1 -M * 24.2 22.2 109
KIRWIN 9550 .0 .0 100* 32.3 23.8 136
LOST CREEK 8080 -M .0 * -M 24.4 *
MARQUETTE 8760 .3 .0 * 29.7 24.0 124
MIDDLE POWDER 7760 .1 .0 * 31.2 24.0 130
OWL CREEK 8975 .0 .0 100* 18.6 15.7 118
POWDER RIVER PASS 9480 .2 .0 * 34.7 23.8 146
SHELL CREEK 9580 .1 .0 * 28.7 26.4 109
SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142
SYLVAN ROAD 8120 .0 .0 100* 38.6 30.0 129
TIMBER CREEK 7950 -M .0 * 22.0 19.3 114
YOUNTS PEAK 8350 1.5 .0 * 41.9 29.1 144
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Basin wide percent of average * 128
SHOSHONE RIVER
BLACKWATER 9780 .1 .0 * 47.3 34.3 138
EVENING STAR 9200 .0 .0 100* 57.5 41.5 139
KIRWIN 9550 .0 .0 100* 32.3 23.8 136
MARQUETTE 8760 .3 .0 * 29.7 24.0 124
SYLVAN LAKE 8420 .0 .0 100* 49.2 34.7 142
SYLVAN ROAD 8120 .0 .0 100* 38.6 30.0 129
YOUNTS PEAK 8350 1.5 .0 * 41.9 29.1 144
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Basin wide percent of average * 136
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 24.1 19.0 127
BONE SPRINGS DIV 9350 .1 .0 * 33.0 29.6 111
BURGESS JUNCTION 7880 .0 .0 100* 29.0 23.2 125
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 35.7 28.1 127
DOME LAKE 8880 .0 .0 100* 31.8 25.9 123
GRAVE SPRINGS 8550 .1 -M * 24.2 22.2 109
HANSEN SAWMILL 8760 .0 .0 100* 26.0 19.0 137
LOST CREEK 8080 -M .0 * -M 24.4 *
MIDDLE POWDER 7760 .1 .0 * 31.2 24.0 130
POWDER RIVER PASS 9480 .2 .0 * 34.7 23.8 146
SUCKER CREEK 8880 .0 .0 100* 32.8 27.0 121
TIE CREEK 6870 .1 -M * 34.0 22.3 152
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Basin wide percent of average * 127
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * 31.4 26.7 118
NORTH RAPID CREEK 6130 .3 -M * 37.5 -M *
WARREN PEAK 6520 -M .0 * -M 20.5 *
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Basin wide percent of average * 118*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 46.9 35.9 131
DIVIDE PEAK 8800 -M .0 * 36.4 35.4 103
ELK RIVER 8700 .0 .0 100* 38.4 29.3 131
JOE WRIGHT 10120 .0 .0 100* 44.4 43.1 103
NORTH FRENCH CREEK 10100 .0 .0 100* 45.9 38.2 120
OLD BATTLE 10000 .0 .0 100* 55.0 45.6 121
SOUTH BRUSH CREEK 8400 .1 .0 * 29.3 29.2 100
TOWER 10500 .1 .0 * 70.0 56.2 125
WEBBER SPRINGS 9200 .0 .0 100* 47.9 39.0 123
WILLOW CREEK PASS 9540 .0 .0 100* 29.5 24.4 121
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Basin wide percent of average * 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 43.8 32.5 135
CASPER MTN. 7900 .0 .0 100* 32.5 28.4 114
CHRISTINA LAKE 9980 -M .0 * -M 29.1 *
DEADMAN HILL 10220 .0 .0 100* 32.4 30.9 105
LAPRELE CREEK 8320 .0 .0 100* 26.3 23.8 111
RENO HILL 8400 .1 .0 * 32.3 29.5 109
ROACH 9700 .0 .0 100* 35.6 35.8 99
SAND LAKE 10080 .0 .0 100* 45.5 33.5 136
SOUTH PASS 9040 .0 .0 100* 34.2 29.3 117
WINDY PEAK 7840 .2 .0 * 23.5 20.9 112
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Basin wide percent of average * 116
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 24.2 *
DIVIDE PEAK 8800 -M .0 * 36.4 35.4 103
OLD BATTLE 10000 .0 .0 100* 55.0 45.6 121
SANDSTONE RS 8150 .0 .0 100* 32.3 31.1 104
WHISKEY PARK 8950 -M .0 * 49.5 43.0 115
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Basin wide percent of average * 112
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 24.8 24.9 100
BLIND BULL SUM 8650 .0 .0 100* 48.3 33.6 144
EAST RIM DIVIDE 7930 .1 .0 * 27.9 23.3 120
ELKHART PARK G.S. 9400 .1 .0 * 30.8 24.5 126
GROS VENTRE SUMMIT 8775 .0 .0 100* 32.6 24.4 134
KENDALL R.S. 7740 .2 .0 * 34.2 23.8 144
LOOMIS PARK 8240 -M .0 * -M 28.8 *
NEW FORK LAKE 8340 .0 .0 100* 23.7 22.2 107
SNIDER BASIN 8250 .2 .0 * 26.5 23.3 114
SPRING CREEK DIVIDE 9000 .1 .0 * 45.2 38.5 117
TRIPLE PEAK 8500 .0 .0 100* 54.0 45.1 120
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Basin wide percent of average * 123
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.4 20.5 119
HEWINTA 9500 .2 .0 * 26.7 24.4 109
HICKERSON PARK 9150 .0 .0 100* 19.2 20.6 93
HOLE-IN-ROCK 9150 .0 .0 100* 20.4 20.6 99
INDIAN CREEK 9425 .0 .0 100* 43.1 37.3 116
KELLEY R.S. 8180 .0 .0 100* 40.7 28.7 142
STEEL CREEK PARK 10100 .0 .0 100* 27.8 28.5 98
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Basin wide percent of average * 112
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * 42.0 28.2 149
HAYDEN FORK 9400 .0 .0 100* 38.2 31.6 121
KELLEY R.S. 8180 .0 .0 100* 40.7 28.7 142
LILY LAKE 9050 .2 .0 * 30.6 26.2 117
MONTE CRISTO 8960 .3 .0 * 48.5 38.4 126
SALT RIVER SUMMIT 7600 .2 .0 * 35.6 25.9 137
TRIAL LAKE 9960 -M .0 * 47.4 37.7 126
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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.