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 6 , 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* 35.3 31.3 113
COTTONWOOD CREEK 7600 .2 .0 * 42.5 34.8 123
GRANITE CREEK 6770 .3 .0 * 32.5 34.4 95
GRASSY LAKE 7265 .0 .0 100* 57.9 51.7 113
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.2 23.4 104
LEWIS LAKE DIVIDE 7860 .0 .0 100* 52.3 52.5 100
PHILLIPS BENCH 8200 .4 .0 * 43.0 41.4 105
SALT RIVER SUMMIT 7600 .0 .0 100* 27.9 24.8 113
SNAKE RIVER STATION 6920 -M .0 * -M 36.3 *
SPRING CREEK DIVIDE 9000 .0 .0 100* 41.2 37.4 111
THUMB DIVIDE 7980 .0 .0 100* 32.8 29.3 112
TOGWOTEE PASS 9580 .0 .0 100* 40.4 39.4 103
TWO OCEAN PLATEAU 9360 .2 .0 * 44.2 43.0 103
WILLOW CREEK 8450 .0 .0 100* 55.4 44.5 125
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Basin wide percent of average * 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 34.2 30.0 115
BLACK BEAR 7950 .0 .0 100* 66.9 57.0 118
CANYON 7940 .0 .0 100* 28.0 23.8 118
FISHER CREEK 9100 .0 .0 100* 51.2 54.2 95
MADISON PLATEAU 7750 -M .0 * 43.7 38.5 114
NORTHEAST ENTRANCE 7350 .0 .0 100* 22.3 21.5 104
PARKER PEAK 9400 .2 .0 * 31.9 27.5 117
SYLVAN LAKE 8420 .3 .0 * -M 32.5 *
THUMB DIVIDE 7980 .0 .0 100* 32.8 29.3 112
TWO OCEAN PLATEAU 9360 .2 .0 * 44.2 43.0 103
WHISKEY CREEK 6800 .0 .0 100* 35.5 33.0 108
WHITE MILL 8700 .0 .0 100* 35.5 42.7 84
WOLVERINE 7650 .0 .0 100* 20.3 23.2 88
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Basin wide percent of average * 106
WIND RIVER
BURROUGHS CREEK 8750 .4 .0 * 28.9 26.2 111
COLD SPRINGS 9630 .0 .0 100* 28.2 20.2 140
DEER PARK 9700 .2 -M * 39.5 -M *
HOBBS PARK 10100 .2 .0 * 32.8 25.3 130
LITTLE WARM 9620 .2 .0 * 29.8 23.5 127
SOUTH PASS 9040 -M .0 * -M 28.3 *
ST. LAWRENCE ALT 8620 .2 .0 * 24.8 18.7 133
TOGWOTEE PASS 9580 .0 .0 100* 40.4 39.4 103
TOWNSEND CREEK 8700 .2 .0 * 30.2 22.5 134
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Basin wide percent of average * 123
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 30.4 29.8 103
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.0 *
BLACKWATER 9780 .0 .0 100* 37.0 31.5 118
BONE SPRINGS DIV 9350 .0 .0 100* 30.9 27.9 111
EVENING STAR 9200 .0 .0 100* 48.2 38.3 126
GRAVE SPRINGS 8550 .3 .0 * 22.7 21.0 108
KIRWIN 9550 .0 .0 100* 26.9 22.2 122
MARQUETTE 8760 .0 .0 100* 26.0 22.5 117
MIDDLE POWDER 7760 .2 .0 * 28.9 23.0 126
OWL CREEK 8975 .0 .0 100* 21.0 14.8 143
POWDER RIVER PASS 9480 .2 .0 * 27.7 22.8 122
SHELL CREEK 9580 .0 .0 100* 27.4 25.3 109
SYLVAN LAKE 8420 .3 .0 * -M 32.5 *
SYLVAN ROAD 8120 -M .0 * -M 27.9 *
TIMBER CREEK 7950 .2 .0 * 21.0 18.0 117
YOUNTS PEAK 8350 -M .0 * -M 27.4 *
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Basin wide percent of average * 118
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 37.0 31.5 118
EVENING STAR 9200 .0 .0 100* 48.2 38.3 126
KIRWIN 9550 .0 .0 100* 26.9 22.2 122
MARQUETTE 8760 .0 .0 100* 26.0 22.5 117
SYLVAN LAKE 8420 .3 .0 * -M 32.5 *
SYLVAN ROAD 8120 -M .0 * -M 27.9 *
YOUNTS PEAK 8350 -M .0 * -M 27.4 *
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Basin wide percent of average * 121
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.0 *
BIG GOOSE 7990 .0 -M * 22.8 -M *
BONE SPRINGS DIV 9350 .0 .0 100* 30.9 27.9 111
BURGESS JUNCTION 7880 .2 .0 * 22.0 22.4 99
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 30.0 26.8 112
DOME LAKE 8880 .0 .0 100* 21.9 24.8 89
GRAVE SPRINGS 8550 .3 .0 * 22.7 21.0 108
HANSEN SAWMILL 8760 .3 .0 * 20.5 17.8 116
MIDDLE POWDER 7760 .2 .0 * 28.9 23.0 126
POWDER RIVER PASS 9480 .2 .0 * 27.7 22.8 122
SUCKER CREEK 8880 .7 .0 * 27.9 25.8 109
TIE CREEK 6870 .2 -M * 24.2 21.5 113
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Basin wide percent of average * 110
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * 30.0 25.0 121
NORTH RAPID CREEK 6130 .0 -M * 28.4 -M *
WARREN PEAK 6520 .0 .0 100* 29.0 19.0 154
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Basin wide percent of average * 135
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .0 * 34.8 34.4 102
DIVIDE PEAK 8800 .0 .0 100* 38.4 34.0 113
ELK RIVER 8700 .0 .0 100* 34.5 28.0 123
JOE WRIGHT 10120 .0 .0 100* 41.8 41.0 102
NORTH FRENCH CREEK 10100 .0 .0 100* 42.5 36.5 117
OLD BATTLE 10000 .0 .0 100* 55.2 44.0 126
SOUTH BRUSH CREEK 8400 5.5 .0 * 41.5 27.9 150
TOWER 10500 .0 .0 100* 57.3 54.0 106
WEBBER SPRINGS 9200 .2 .0 * 41.0 37.8 109
WILLOW CREEK PASS 9540 .2 .0 * 23.7 22.7 105
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Basin wide percent of average * 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.0 .0 * 37.8 31.0 122
CASPER MTN. 7900 .2 .0 * 28.2 27.4 103
DEADMAN HILL 10220 .3 .0 * 29.5 29.5 101
DEER PARK 9700 .2 -M * 39.5 -M *
LAPRELE CREEK 8320 .3 .0 * 27.5 22.7 122
RENO HILL 8400 .0 .0 100* 31.5 28.8 110
ROACH 9700 .0 .0 100* 32.5 34.8 94
SAND LAKE 10080 .0 .0 100* 46.5 32.4 144
SOUTH PASS 9040 -M .0 * -M 28.3 *
WINDY PEAK 7840 .2 .0 * 24.7 20.3 122
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Basin wide percent of average * 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 26.4 23.2 114
DIVIDE PEAK 8800 .0 .0 100* 38.4 34.0 113
OLD BATTLE 10000 .0 .0 100* 55.2 44.0 126
SANDSTONE RS 8150 .0 .0 100* 30.5 29.2 105
WHISKEY PARK 8950 .0 .0 100* 44.0 41.9 106
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Basin wide percent of average * 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.8 23.9 100
BLIND BULL SUM 8650 .2 .0 * 33.3 32.5 103
EAST RIM DIVIDE 7930 .0 .0 100* 21.9 22.3 99
ELKHART PARK G.S. 9400 .2 .0 * 25.3 23.5 108
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.2 23.4 104
KENDALL R.S. 7740 .0 .0 100* 24.5 22.8 108
LOOMIS PARK 8240 .0 .0 100* 28.9 27.5 105
NEW FORK LAKE 8340 .0 .0 100* 21.5 21.2 102
SNIDER BASIN 8250 .0 .0 100* 27.0 22.3 122
SPRING CREEK DIVIDE 9000 .0 .0 100* 41.2 37.4 111
TRIPLE PEAK 8500 .0 .0 100* 43.4 43.5 100
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Basin wide percent of average * 105
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 21.9 19.5 112
HEWINTA 9500 .0 .0 100* 24.8 23.2 107
HICKERSON PARK 9150 .3 .0 * 19.5 19.4 102
HOLE-IN-ROCK 9150 .0 .0 100* 20.3 19.4 105
INDIAN CREEK 9425 .0 .0 100* 39.0 36.0 109
KELLEY R.S. 8180 .0 .0 100* 29.2 27.5 107
STEEL CREEK PARK 10100 .2 .0 * 30.8 26.5 116
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Basin wide percent of average * 109
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * -M 27.3 *
HAYDEN FORK 9400 .0 .0 100* 34.2 30.5 112
KELLEY R.S. 8180 .0 .0 100* 29.2 27.5 107
LILY LAKE 9050 .2 .0 * 30.2 25.0 121
MONTE CRISTO 8960 .0 .0 100* 43.2 37.0 117
SALT RIVER SUMMIT 7600 .0 .0 100* 27.9 24.8 113
TRIAL LAKE 9960 .0 .0 100* 36.9 36.0 103
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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.