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: AUGUST 11 , 1999
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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* -M 31.5 *
COTTONWOOD CREEK 7600 .2 .0 * 42.5 35.0 122
GRANITE CREEK 6770 .3 .0 * 32.4 34.7 94
GRASSY LAKE 7265 .0 .0 100* -M 52.0 *
GROS VENTRE SUMMIT 8775 -M .0 * -M 23.5 *
LEWIS LAKE DIVIDE 7860 .0 .0 100* -M 52.9 *
PHILLIPS BENCH 8200 .0 .0 100* -M 41.7 *
SALT RIVER SUMMIT 7600 .0 .0 100* 28.0 25.0 113
SNAKE RIVER STATION 6920 .0 .0 100* 37.5 36.5 103
SPRING CREEK DIVIDE 9000 .0 .0 100* 41.2 37.5 110
THUMB DIVIDE 7980 .0 .0 100* -M 29.5 *
TOGWOTEE PASS 9580 .0 .0 100* 40.4 39.7 102
TWO OCEAN PLATEAU 9360 -M .0 * -M 43.4 *
WILLOW CREEK 8450 .0 .0 100* 55.5 44.8 124
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Basin wide percent of average * 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 34.5 30.3 114
BLACK BEAR 7950 .0 .0 100* -M 57.4 *
CANYON 7940 .0 .0 100* 28.0 24.0 117
FISHER CREEK 9100 .0 .0 100* 52.0 54.5 96
MADISON PLATEAU 7750 -M .0 * -M 38.9 *
NORTHEAST ENTRANCE 7350 .2 .0 * 22.7 21.9 104
PARKER PEAK 9400 .0 .0 100* 31.9 27.9 115
SYLVAN LAKE 8420 .0 .0 100* -M 33.0 *
THUMB DIVIDE 7980 .0 .0 100* -M 29.5 *
TWO OCEAN PLATEAU 9360 -M .0 * -M 43.4 *
WHISKEY CREEK 6800 .0 .0 100* -M 33.3 *
WHITE MILL 8700 .0 .0 100* 35.8 43.0 84
WOLVERINE 7650 .0 .0 100* 20.0 23.5 86
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Basin wide percent of average * 100
WIND RIVER
BURROUGHS CREEK 8750 .4 .0 * 28.8 26.5 109
COLD SPRINGS 9630 .2 .0 * 28.0 20.4 138
DEER PARK 9700 .2 -M * 39.5 -M *
HOBBS PARK 10100 .0 .0 100* 33.4 25.5 131
LITTLE WARM 9620 .3 .0 * 29.8 23.9 125
SOUTH PASS 9040 -M .0 * -M 28.5 *
ST. LAWRENCE ALT 8620 .0 .0 100* 24.5 18.8 131
TOGWOTEE PASS 9580 .0 .0 100* 40.4 39.7 102
TOWNSEND CREEK 8700 .2 .0 * 29.9 22.8 132
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Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 30.5 30.0 102
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.2 *
BLACKWATER 9780 .0 .0 100* 37.0 32.0 116
BONE SPRINGS DIV 9350 .2 .0 * 30.8 28.2 110
EVENING STAR 9200 .0 .0 100* 48.0 38.9 124
GRAVE SPRINGS 8550 .2 .0 * 22.7 21.3 107
KIRWIN 9550 .0 .0 100* 26.9 22.5 120
MARQUETTE 8760 .0 .0 100* 27.0 22.8 119
MIDDLE POWDER 7760 .0 .0 100* 28.9 23.2 125
OWL CREEK 8975 .0 .0 100* 21.2 15.0 142
POWDER RIVER PASS 9480 .0 .0 100* 27.9 23.0 122
SHELL CREEK 9580 .0 .0 100* 27.5 25.5 108
SYLVAN LAKE 8420 .0 .0 100* -M 33.0 *
SYLVAN ROAD 8120 .0 .0 100* 27.5 28.3 98
TIMBER CREEK 7950 .0 .0 100* 21.2 18.3 116
YOUNTS PEAK 8350 .0 .0 100* 29.2 27.7 106
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Basin wide percent of average * 114
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 37.0 32.0 116
EVENING STAR 9200 .0 .0 100* 48.0 38.9 124
KIRWIN 9550 .0 .0 100* 26.9 22.5 120
MARQUETTE 8760 .0 .0 100* 27.0 22.8 119
SYLVAN LAKE 8420 .0 .0 100* -M 33.0 *
SYLVAN ROAD 8120 .0 .0 100* 27.5 28.3 98
YOUNTS PEAK 8350 .0 .0 100* 29.2 27.7 106
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Basin wide percent of average * 114
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.2 *
BIG GOOSE 7990 .0 -M * 23.0 -M *
BONE SPRINGS DIV 9350 .2 .0 * 30.8 28.2 110
BURGESS JUNCTION 7880 .2 .0 * 22.4 22.5 100
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 30.0 27.0 112
DOME LAKE 8880 -M .0 * -M 25.0 *
GRAVE SPRINGS 8550 .2 .0 * 22.7 21.3 107
HANSEN SAWMILL 8760 .3 .0 * 21.0 18.0 118
MIDDLE POWDER 7760 .0 .0 100* 28.9 23.2 125
POWDER RIVER PASS 9480 .0 .0 100* 27.9 23.0 122
SUCKER CREEK 8880 .7 .0 * 27.8 26.0 107
TIE CREEK 6870 .2 -M * 24.8 21.7 115
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Basin wide percent of average * 113
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * 30.5 25.3 121
NORTH RAPID CREEK 6130 .0 -M * 28.7 -M *
WARREN PEAK 6520 .2 .0 * 29.0 19.3 152
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Basin wide percent of average * 134
UPPER N. PLATTE RIVER
COLUMBINE 9400 .3 .0 * 34.9 34.7 101
DIVIDE PEAK 8800 .2 .0 * 38.7 34.3 113
ELK RIVER 8700 .0 .0 100* 35.2 28.3 125
JOE WRIGHT 10120 .0 .0 100* 42.0 41.4 102
NORTH FRENCH CREEK 10100 .0 .0 100* 42.5 36.9 116
OLD BATTLE 10000 .0 .0 100* 55.4 44.4 125
SOUTH BRUSH CREEK 8400 5.5 .0 * 41.5 28.0 149
TOWER 10500 .2 .0 * 57.3 54.5 106
WEBBER SPRINGS 9200 .0 .0 100* 41.0 38.0 109
WILLOW CREEK PASS 9540 .2 .0 * 23.8 23.0 104
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Basin wide percent of average * 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.0 .0 * 38.2 31.4 122
CASPER MTN. 7900 .2 .0 * 28.0 27.5 102
DEADMAN HILL 10220 .3 .0 * 29.9 29.8 101
DEER PARK 9700 .2 -M * 39.5 -M *
LAPRELE CREEK 8320 .0 .0 100* 27.7 22.9 122
RENO HILL 8400 .0 .0 100* 31.5 28.9 110
ROACH 9700 .0 .0 100* 32.7 35.0 94
SAND LAKE 10080 .0 .0 100* 46.5 32.5 144
SOUTH PASS 9040 -M .0 * -M 28.5 *
WINDY PEAK 7840 .0 .0 100* 25.0 20.4 123
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Basin wide percent of average * 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 26.7 23.4 115
DIVIDE PEAK 8800 .2 .0 * 38.7 34.3 113
OLD BATTLE 10000 .0 .0 100* 55.4 44.4 125
SANDSTONE RS 8150 .0 .0 100* 30.9 29.5 105
WHISKEY PARK 8950 .0 .0 100* 44.2 42.0 106
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Basin wide percent of average * 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.9 24.0 100
BLIND BULL SUM 8650 .2 .0 * 33.2 32.8 102
EAST RIM DIVIDE 7930 .0 .0 100* 21.9 22.5 98
ELKHART PARK G.S. 9400 .2 .0 * 25.2 23.7 107
GROS VENTRE SUMMIT 8775 -M .0 * -M 23.5 *
KENDALL R.S. 7740 .0 .0 100* 24.8 23.0 108
LOOMIS PARK 8240 .0 .0 100* 29.0 27.8 105
NEW FORK LAKE 8340 .0 .0 100* 21.8 21.4 102
SNIDER BASIN 8250 .0 .0 100* 26.9 22.5 120
SPRING CREEK DIVIDE 9000 .0 .0 100* 41.2 37.5 110
TRIPLE PEAK 8500 .0 .0 100* 43.4 43.8 100
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Basin wide percent of average * 105
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 21.9 19.8 111
HEWINTA 9500 .0 .0 100* 24.9 23.4 107
HICKERSON PARK 9150 .4 .0 * 20.0 19.5 103
HOLE-IN-ROCK 9150 .0 .0 100* 20.5 19.5 106
INDIAN CREEK 9425 .0 .0 100* 39.3 36.3 109
KELLEY R.S. 8180 .0 .0 100* 29.2 27.7 106
STEEL CREEK PARK 10100 .0 .0 100* 30.8 27.0 115
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Basin wide percent of average * 108
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * -M 27.5 *
HAYDEN FORK 9400 .0 .0 100* 34.4 30.8 112
KELLEY R.S. 8180 .0 .0 100* 29.2 27.7 106
LILY LAKE 9050 .3 .0 * 30.5 25.2 122
MONTE CRISTO 8960 .0 .0 100* 43.2 37.3 116
SALT RIVER SUMMIT 7600 .0 .0 100* 28.0 25.0 113
TRIAL LAKE 9960 .0 .0 100* 37.0 36.3 102
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Basin wide percent of average * 112
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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.