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: AUGUST 3 , 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 31.0 114
COTTONWOOD CREEK 7600 .2 .0 * 42.3 34.5 123
GRANITE CREEK 6770 .3 .0 * 32.3 34.2 95
GRASSY LAKE 7265 .0 .0 100* 57.8 51.4 113
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.2 23.2 105
LEWIS LAKE DIVIDE 7860 .0 .0 100* 52.4 52.3 101
PHILLIPS BENCH 8200 .3 .0 * 42.8 41.3 104
SALT RIVER SUMMIT 7600 .0 .0 100* 27.7 24.5 114
SNAKE RIVER STATION 6920 .0 .0 100* 36.7 36.0 102
SPRING CREEK DIVIDE 9000 .0 .0 100* 40.9 37.2 111
THUMB DIVIDE 7980 .0 .0 100* 32.7 29.2 113
TOGWOTEE PASS 9580 .0 .0 100* 40.3 39.3 103
TWO OCEAN PLATEAU 9360 .2 .0 * 43.9 42.8 103
WILLOW CREEK 8450 .0 .0 100* 55.2 44.3 125
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Basin wide percent of average * 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 33.8 29.9 114
BLACK BEAR 7950 .0 .0 100* 65.8 56.8 117
CANYON 7940 .0 .0 100* 27.7 23.5 118
FISHER CREEK 9100 .0 .0 100* 50.9 53.9 95
MADISON PLATEAU 7750 -M .0 * 43.2 38.3 113
NORTHEAST ENTRANCE 7350 .2 .0 * -M 21.4 *
PARKER PEAK 9400 .0 .0 100* 31.7 27.2 117
SYLVAN LAKE 8420 -M .0 * -M 32.3 *
THUMB DIVIDE 7980 .0 .0 100* 32.7 29.2 113
TWO OCEAN PLATEAU 9360 .2 .0 * 43.9 42.8 103
WHISKEY CREEK 6800 .0 .0 100* 35.3 32.8 108
WHITE MILL 8700 -M .0 * -M 42.4 *
WOLVERINE 7650 .0 .0 100* -M 23.0 *
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Basin wide percent of average * 110
WIND RIVER
BURROUGHS CREEK 8750 .3 .0 * 28.7 26.0 111
COLD SPRINGS 9630 .0 .0 100* 27.5 20.0 138
DEER PARK 9700 .2 -M * 38.9 -M *
HOBBS PARK 10100 .0 .0 100* 32.8 25.2 131
LITTLE WARM 9620 .2 .0 * 29.7 23.4 127
SOUTH PASS 9040 -M .0 * -M 28.2 *
ST. LAWRENCE ALT 8620 .2 .0 * 24.4 18.5 132
TOGWOTEE PASS 9580 .0 .0 100* 40.3 39.3 103
TOWNSEND CREEK 8700 .2 .0 * 29.5 22.4 132
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Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 30.0 29.7 102
BEAR TRAP MEADOW 7900 .0 .0 100* -M 17.9 *
BLACKWATER 9780 .0 .0 100* 36.5 31.2 118
BONE SPRINGS DIV 9350 .2 .0 * 30.4 27.7 111
EVENING STAR 9200 .0 .0 100* 47.9 37.9 127
GRAVE SPRINGS 8550 .2 .0 * 22.0 20.9 106
KIRWIN 9550 .0 .0 100* 26.2 21.9 120
MARQUETTE 8760 .0 .0 100* 25.7 22.4 115
MIDDLE POWDER 7760 .0 .0 100* 28.7 22.7 127
OWL CREEK 8975 .0 .0 100* 20.4 14.6 140
POWDER RIVER PASS 9480 .0 .0 100* 26.7 22.5 119
SHELL CREEK 9580 .0 .0 100* 26.7 25.0 107
SYLVAN LAKE 8420 -M .0 * -M 32.3 *
SYLVAN ROAD 8120 -M .0 * -M 27.5 *
TIMBER CREEK 7950 .0 .0 100* 20.7 17.9 116
YOUNTS PEAK 8350 .0 .0 100* 28.9 27.2 107
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Basin wide percent of average * 116
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 36.5 31.2 118
EVENING STAR 9200 .0 .0 100* 47.9 37.9 127
KIRWIN 9550 .0 .0 100* 26.2 21.9 120
MARQUETTE 8760 .0 .0 100* 25.7 22.4 115
SYLVAN LAKE 8420 -M .0 * -M 32.3 *
SYLVAN ROAD 8120 -M .0 * -M 27.5 *
YOUNTS PEAK 8350 .0 .0 100* 28.9 27.2 107
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Basin wide percent of average * 118
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* -M 17.9 *
BIG GOOSE 7990 .0 -M * 22.7 -M *
BONE SPRINGS DIV 9350 .2 .0 * 30.4 27.7 111
BURGESS JUNCTION 7880 .2 .0 * 21.7 22.2 98
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 29.4 26.5 111
DOME LAKE 8880 .0 .0 100* 21.4 24.5 87
GRAVE SPRINGS 8550 .2 .0 * 22.0 20.9 106
HANSEN SAWMILL 8760 .3 .0 * 20.4 17.5 117
MIDDLE POWDER 7760 .0 .0 100* 28.7 22.7 127
POWDER RIVER PASS 9480 .0 .0 100* 26.7 22.5 119
SUCKER CREEK 8880 .6 .0 * 27.4 25.5 108
TIE CREEK 6870 .2 -M * 23.9 21.4 113
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Basin wide percent of average * 109
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * 30.0 24.7 122
NORTH RAPID CREEK 6130 .2 -M * 28.4 -M *
WARREN PEAK 6520 .0 .0 100* 29.0 18.9 155
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Basin wide percent of average * 136
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .0 * 34.5 34.3 101
DIVIDE PEAK 8800 .2 .0 * 37.8 33.8 112
ELK RIVER 8700 .0 .0 100* 34.3 27.9 124
JOE WRIGHT 10120 .0 .0 100* 41.3 40.8 102
NORTH FRENCH CREEK 10100 .0 .0 100* 42.5 36.4 117
OLD BATTLE 10000 .0 .0 100* 55.3 43.9 126
SOUTH BRUSH CREEK 8400 5.5 .0 * 41.5 27.7 151
TOWER 10500 .2 .0 * 57.4 53.8 107
WEBBER SPRINGS 9200 .0 .0 100* 41.3 37.5 111
WILLOW CREEK PASS 9540 .2 .0 * 21.2 22.4 95
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Basin wide percent of average * 114
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 37.3 30.9 121
CASPER MTN. 7900 .2 .0 * 28.2 27.2 104
DEADMAN HILL 10220 .0 .0 100* 29.0 29.4 99
DEER PARK 9700 .2 -M * 38.9 -M *
LAPRELE CREEK 8320 .3 .0 * 27.9 22.4 125
RENO HILL 8400 .0 .0 100* 31.4 28.7 110
ROACH 9700 .0 .0 100* 31.7 34.5 92
SAND LAKE 10080 .0 .0 100* 46.2 32.3 144
SOUTH PASS 9040 -M .0 * -M 28.2 *
WINDY PEAK 7840 .0 .0 100* 24.4 20.2 121
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Basin wide percent of average * 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 26.2 23.0 114
DIVIDE PEAK 8800 .2 .0 * 37.8 33.8 112
OLD BATTLE 10000 .0 .0 100* 55.3 43.9 126
SANDSTONE RS 8150 .0 .0 100* 30.7 28.9 106
WHISKEY PARK 8950 .0 .0 100* 44.0 41.7 106
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Basin wide percent of average * 114
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.7 23.7 100
BLIND BULL SUM 8650 .2 .0 * 33.0 32.3 103
EAST RIM DIVIDE 7930 .0 .0 100* 21.9 22.0 100
ELKHART PARK G.S. 9400 .2 .0 * 25.2 23.2 109
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.2 23.2 105
KENDALL R.S. 7740 .0 .0 100* 24.4 22.5 109
LOOMIS PARK 8240 .0 .0 100* 28.7 27.4 105
NEW FORK LAKE 8340 .0 .0 100* 21.5 21.0 103
SNIDER BASIN 8250 .0 .0 100* 26.9 22.0 122
SPRING CREEK DIVIDE 9000 .0 .0 100* 40.9 37.2 111
TRIPLE PEAK 8500 .0 .0 100* 43.7 43.3 101
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Basin wide percent of average * 106
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 21.5 19.4 111
HEWINTA 9500 .0 .0 100* 24.5 22.9 107
HICKERSON PARK 9150 .3 .0 * 19.4 19.2 102
HOLE-IN-ROCK 9150 .0 .0 100* 19.9 19.2 105
INDIAN CREEK 9425 .0 .0 100* 39.3 35.8 110
KELLEY R.S. 8180 .0 .0 100* 28.9 27.2 107
STEEL CREEK PARK 10100 .0 .0 100* 30.4 26.4 116
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Basin wide percent of average * 109
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 32.5 27.2 120
HAYDEN FORK 9400 .0 .0 100* 33.8 30.4 112
KELLEY R.S. 8180 .0 .0 100* 28.9 27.2 107
LILY LAKE 9050 .2 .0 * 30.2 24.7 122
MONTE CRISTO 8960 .0 .0 100* 42.9 36.8 117
SALT RIVER SUMMIT 7600 .0 .0 100* 27.7 24.5 114
TRIAL LAKE 9960 .0 .0 100* 36.4 35.8 102
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Basin wide percent of average * 113
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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.