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 SUNDAY: AUGUST 29 , 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* 35.7 32.3 111
COTTONWOOD CREEK 7600 .2 .0 * 43.4 35.8 122
GRANITE CREEK 6770 -M .0 * 32.8 35.9 92
GRASSY LAKE 7265 .0 .0 100* 59.0 53.2 112
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.8 24.3 103
LEWIS LAKE DIVIDE 7860 .0 .0 100* 53.5 54.0 100
PHILLIPS BENCH 8200 .2 .0 * 43.9 42.7 103
SALT RIVER SUMMIT 7600 .2 .0 * 30.0 25.8 117
SNAKE RIVER STATION 6920 .0 .0 100* 38.4 37.4 103
SPRING CREEK DIVIDE 9000 .4 .0 * 42.3 38.4 111
THUMB DIVIDE 7980 -M .0 * -M 30.2 *
TOGWOTEE PASS 9580 .0 .0 100* 41.2 40.7 102
TWO OCEAN PLATEAU 9360 .3 .0 * 45.5 44.5 103
WILLOW CREEK 8450 .0 .0 100* 56.5 45.9 124
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Basin wide percent of average * 108
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 35.8 31.3 115
BLACK BEAR 7950 .0 .0 100* 70.3 58.7 120
CANYON 7940 .0 .0 100* 29.4 25.3 117
FISHER CREEK 9100 .0 .0 100* 54.4 56.0 98
MADISON PLATEAU 7750 .0 .0 100* 46.0 40.0 116
NORTHEAST ENTRANCE 7350 .0 .0 100* 24.7 23.0 108
PARKER PEAK 9400 .2 .0 * 33.5 29.0 116
SYLVAN LAKE 8420 .0 .0 100* 42.5 34.4 124
THUMB DIVIDE 7980 -M .0 * -M 30.2 *
TWO OCEAN PLATEAU 9360 .3 .0 * 45.5 44.5 103
WHISKEY CREEK 6800 .0 .0 100* 37.5 34.4 110
WHITE MILL 8700 .0 .0 100* 37.8 44.4 86
WOLVERINE 7650 .2 .0 * 21.4 24.5 87
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Basin wide percent of average * 108
WIND RIVER
BURROUGHS CREEK 8750 .4 .0 * 29.4 27.5 107
COLD SPRINGS 9630 .0 .0 100* 28.7 21.0 137
DEER PARK 9700 .3 -M * 41.2 -M *
HOBBS PARK 10100 .0 .0 100* 33.7 26.5 128
LITTLE WARM 9620 .2 .0 * 30.2 24.8 122
SOUTH PASS 9040 -M .0 * -M 29.2 *
ST. LAWRENCE ALT 8620 .2 .0 * 24.8 19.4 128
TOGWOTEE PASS 9580 .0 .0 100* 41.2 40.7 102
TOWNSEND CREEK 8700 .3 .0 * 30.8 23.5 132
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Basin wide percent of average * 120
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 31.0 30.7 102
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.9 *
BLACKWATER 9780 .0 .0 100* 38.0 33.9 113
BONE SPRINGS DIV 9350 -M .0 * 31.3 29.4 107
EVENING STAR 9200 .0 .0 100* 49.5 41.0 121
GRAVE SPRINGS 8550 .3 .0 * 23.0 22.0 105
KIRWIN 9550 .0 .0 100* 27.9 23.5 119
MARQUETTE 8760 .0 .0 100* 29.0 23.8 122
MIDDLE POWDER 7760 .2 .0 * 29.5 23.9 124
OWL CREEK 8975 .0 .0 100* 21.2 15.5 137
POWDER RIVER PASS 9480 .0 .0 100* 28.5 23.7 121
SHELL CREEK 9580 .0 .0 100* 28.0 26.2 107
SYLVAN LAKE 8420 .0 .0 100* 42.5 34.4 124
SYLVAN ROAD 8120 .0 .0 100* 28.7 29.7 97
TIMBER CREEK 7950 .2 .0 * 22.0 19.2 115
YOUNTS PEAK 8350 .0 .0 100* 30.4 28.9 106
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Basin wide percent of average * 114
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 38.0 33.9 113
EVENING STAR 9200 .0 .0 100* 49.5 41.0 121
KIRWIN 9550 .0 .0 100* 27.9 23.5 119
MARQUETTE 8760 .0 .0 100* 29.0 23.8 122
SYLVAN LAKE 8420 .0 .0 100* 42.5 34.4 124
SYLVAN ROAD 8120 .0 .0 100* 28.7 29.7 97
YOUNTS PEAK 8350 .0 .0 100* 30.4 28.9 106
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Basin wide percent of average * 115
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* -M 18.9 *
BIG GOOSE 7990 .0 -M * 22.9 -M *
BONE SPRINGS DIV 9350 -M .0 * 31.3 29.4 107
BURGESS JUNCTION 7880 .2 .0 * 23.0 23.2 100
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 31.0 27.9 112
DOME LAKE 8880 .0 .0 100* 22.2 25.7 87
GRAVE SPRINGS 8550 .3 .0 * 23.0 22.0 105
HANSEN SAWMILL 8760 .5 .0 * 21.5 18.9 114
MIDDLE POWDER 7760 .2 .0 * 29.5 23.9 124
POWDER RIVER PASS 9480 .0 .0 100* 28.5 23.7 121
SUCKER CREEK 8880 .2 .0 * 28.8 26.8 108
TIE CREEK 6870 .3 -M * 25.8 22.3 116
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Basin wide percent of average * 109
BELLE FOURCHE
BLIND PARK 6890 .3 .0 * 31.5 26.5 119
NORTH RAPID CREEK 6130 .2 -M * 29.5 -M *
WARREN PEAK 6520 .2 .0 * 30.0 20.4 148
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Basin wide percent of average * 132
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .0 * 35.9 35.8 101
DIVIDE PEAK 8800 .0 .0 100* 39.4 35.2 112
ELK RIVER 8700 .0 .0 100* 37.2 29.2 128
JOE WRIGHT 10120 .0 .0 100* 42.8 42.8 100
NORTH FRENCH CREEK 10100 .0 .0 100* -M 38.0 *
OLD BATTLE 10000 .0 .0 100* 56.7 45.4 125
SOUTH BRUSH CREEK 8400 -M .0 * 31.9 29.0 111
TOWER 10500 .3 .0 * 58.0 55.9 104
WEBBER SPRINGS 9200 .0 .0 100* 42.2 38.8 109
WILLOW CREEK PASS 9540 .0 .0 100* 24.8 24.2 103
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Basin wide percent of average * 110
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 .0 * 40.5 32.4 126
CASPER MTN. 7900 .0 .0 100* 29.7 28.3 105
DEADMAN HILL 10220 .0 .0 100* 30.7 30.8 100
DEER PARK 9700 .3 -M * 41.2 -M *
LAPRELE CREEK 8320 .0 .0 100* 27.5 23.7 117
RENO HILL 8400 .0 .0 100* 31.9 29.5 109
ROACH 9700 .0 .0 100* 33.2 35.7 93
SAND LAKE 10080 .2 .0 * 47.0 33.3 142
SOUTH PASS 9040 -M .0 * -M 29.2 *
WINDY PEAK 7840 .2 .0 * 25.5 20.9 123
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Basin wide percent of average * 114
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 27.3 24.0 114
DIVIDE PEAK 8800 .0 .0 100* 39.4 35.2 112
OLD BATTLE 10000 .0 .0 100* 56.7 45.4 125
SANDSTONE RS 8150 .0 .0 100* 32.0 30.8 105
WHISKEY PARK 8950 .0 .0 100* 44.8 42.9 105
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Basin wide percent of average * 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 24.8 24.8 100
BLIND BULL SUM 8650 .3 .0 * 34.2 33.5 103
EAST RIM DIVIDE 7930 .4 .0 * 22.5 23.2 98
ELKHART PARK G.S. 9400 .4 .0 * 26.2 24.4 108
GROS VENTRE SUMMIT 8775 .0 .0 100* 24.8 24.3 103
KENDALL R.S. 7740 .0 .0 100* 25.0 23.7 106
LOOMIS PARK 8240 .0 .0 100* 29.8 28.7 104
NEW FORK LAKE 8340 .0 .0 100* 22.0 22.0 100
SNIDER BASIN 8250 .0 .0 100* 28.0 23.2 121
SPRING CREEK DIVIDE 9000 .4 .0 * 42.3 38.4 111
TRIPLE PEAK 8500 .0 .0 100* 44.7 44.9 100
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Basin wide percent of average * 105
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 23.0 20.4 114
HEWINTA 9500 .2 .0 * 26.0 24.3 108
HICKERSON PARK 9150 .4 .0 * 21.2 20.5 104
HOLE-IN-ROCK 9150 .0 .0 100* 21.7 20.5 106
INDIAN CREEK 9425 -M .0 * -M 37.2 *
KELLEY R.S. 8180 .0 .0 100* 30.0 28.5 105
STEEL CREEK PARK 10100 .2 .0 * 31.4 28.3 111
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Basin wide percent of average * 108
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 33.5 28.0 120
HAYDEN FORK 9400 .3 .0 * 35.0 31.5 112
KELLEY R.S. 8180 .0 .0 100* 30.0 28.5 105
LILY LAKE 9050 -M .0 * 31.5 26.0 121
MONTE CRISTO 8960 .0 .0 100* 43.3 38.2 114
SALT RIVER SUMMIT 7600 .2 .0 * 30.0 25.8 117
TRIAL LAKE 9960 .0 .0 100* 38.2 37.5 102
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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.