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 2 , 1998
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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 * 30.8 30.9 100
COTTONWOOD CREEK 7600 .0 .0 100* 36.1 34.4 105
GRANITE CREEK 6770 .2 .0 * 30.6 34.0 90
GRASSY LAKE 7265 .1 .0 * 50.9 51.3 99
GROS VENTRE SUMMIT 8775 .0 .0 100* 25.1 23.0 109
LEWIS LAKE DIVIDE 7860 .1 .0 * 44.6 52.1 86
PHILLIPS BENCH 8200 .1 .0 * 37.8 41.1 92
SALT RIVER SUMMIT 7600 .1 .0 * 31.0 24.4 127
SNAKE RIVER STATION 6920 .1 .0 * 35.1 35.9 98
SPRING CREEK DIVIDE 9000 .0 .0 100* 33.6 37.0 91
THUMB DIVIDE 7980 .0 .0 100* 30.1 29.0 104
TOGWOTEE PASS 9580 .1 .0 * 36.5 39.1 93
TWO OCEAN PLATEAU 9360 .1 .0 * 41.3 42.7 97
WILLOW CREEK 8450 .0 .0 100* 48.0 44.2 109
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Basin wide percent of average * 99
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .1 .0 * 27.8 29.7 94
BLACK BEAR 7950 .0 .0 100* 52.0 56.6 92
CANYON 7940 .0 .0 100* 24.2 23.4 103
FISHER CREEK 9100 .0 .0 100* 43.1 53.8 80
MADISON PLATEAU 7750 .1 .0 * 37.9 38.1 99
NORTHEAST ENTRANCE 7350 -M .0 * -M 21.2 *
PARKER PEAK 9400 .0 .0 100* 28.2 27.1 104
SYLVAN LAKE 8420 .0 .0 100* 34.2 32.2 106
THUMB DIVIDE 7980 .0 .0 100* 30.1 29.0 104
TWO OCEAN PLATEAU 9360 .1 .0 * 41.3 42.7 97
WHISKEY CREEK 6800 .0 .0 100* 34.0 32.6 104
WHITE MILL 8700 .4 .0 * 33.6 42.3 79
WOLVERINE 7650 .1 .0 * 18.1 22.9 79
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Basin wide percent of average * 94
WIND RIVER
BURROUGHS CREEK 8750 .2 .0 * 29.4 25.9 114
COLD SPRINGS 9630 .1 .0 * 24.2 19.9 122
DEER PARK 9700 -M -M * 35.4 -M *
HOBBS PARK 10100 .1 .0 * -M 25.0 *
LITTLE WARM 9620 .1 .0 * 24.0 23.3 103
SOUTH PASS 9040 .1 .0 * 30.5 28.0 109
ST. LAWRENCE ALT 8620 .2 .0 * 22.1 18.4 120
TOGWOTEE PASS 9580 .1 .0 * 36.5 39.1 93
TOWNSEND CREEK 8700 .0 .0 100* 26.8 22.3 120
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Basin wide percent of average * 109
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 29.7 29.5 101
BEAR TRAP MEADOW 7900 .0 .0 100* 19.0 17.7 107
BLACKWATER 9780 .0 .0 100* 32.0 30.9 104
BONE SPRINGS DIV 9350 .0 .0 100* 27.5 27.5 100
EVENING STAR 9200 .0 .0 100* 39.3 37.7 104
GRAVE SPRINGS 8550 .1 -M * 22.7 20.7 110
KIRWIN 9550 .0 .0 100* 26.1 21.8 120
MARQUETTE 8760 .3 .0 * 28.0 22.2 126
MIDDLE POWDER 7760 .1 .0 * 24.4 22.6 108
OWL CREEK 8975 .0 .0 100* 18.2 14.5 126
POWDER RIVER PASS 9480 .0 .0 100* 24.2 22.4 108
SHELL CREEK 9580 -M .0 * 19.6 24.9 79
SYLVAN LAKE 8420 .0 .0 100* 34.2 32.2 106
SYLVAN ROAD 8120 .1 .0 * 23.6 27.4 86
TIMBER CREEK 7950 -M .0 * -M 17.7 *
YOUNTS PEAK 8350 .0 .0 100* 25.9 27.0 96
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Basin wide percent of average * 104
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 32.0 30.9 104
EVENING STAR 9200 .0 .0 100* 39.3 37.7 104
KIRWIN 9550 .0 .0 100* 26.1 21.8 120
MARQUETTE 8760 .3 .0 * 28.0 22.2 126
SYLVAN LAKE 8420 .0 .0 100* 34.2 32.2 106
SYLVAN ROAD 8120 .1 .0 * 23.6 27.4 86
YOUNTS PEAK 8350 .0 .0 100* 25.9 27.0 96
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Basin wide percent of average * 105
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 19.0 17.7 107
BONE SPRINGS DIV 9350 .0 .0 100* 27.5 27.5 100
BURGESS JUNCTION 7880 .0 .0 100* 20.6 22.1 93
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 26.6 26.4 101
DOME LAKE 8880 .0 .0 100* 23.5 24.4 96
GRAVE SPRINGS 8550 .1 -M * 22.7 20.7 110
HANSEN SAWMILL 8760 .0 .0 100* 22.0 17.4 126
MIDDLE POWDER 7760 .1 .0 * 24.4 22.6 108
POWDER RIVER PASS 9480 .0 .0 100* 24.2 22.4 108
SUCKER CREEK 8880 .0 .0 100* 24.2 25.4 95
TIE CREEK 6870 .0 -M * -M 21.2 *
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Basin wide percent of average * 104
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 24.6 24.6 100
NORTH RAPID CREEK 6130 .0 -M * 30.6 -M *
WARREN PEAK 6520 .0 .0 100* 20.8 18.7 111
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Basin wide percent of average * 105
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 32.7 34.1 96
DIVIDE PEAK 8800 .0 .0 100* 30.7 33.7 91
ELK RIVER 8700 .0 .0 100* 30.5 27.7 110
JOE WRIGHT 10120 .0 .0 100* 37.8 40.6 93
NORTH FRENCH CREEK 10100 1.4 .0 * 43.9 36.3 121
OLD BATTLE 10000 .0 .0 100* 49.9 43.8 114
SOUTH BRUSH CREEK 8400 .0 .0 100* 22.6 27.5 82
TOWER 10500 .0 .0 100* 56.8 53.7 106
WEBBER SPRINGS 9200 .0 .0 100* 37.7 37.4 101
WILLOW CREEK PASS 9540 .0 .0 100* 18.0 22.3 81
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Basin wide percent of average * 101
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 32.8 30.8 106
CASPER MTN. 7900 .0 .0 100* 21.2 27.1 78
DEADMAN HILL 10220 .0 .0 100* 24.1 29.2 83
DEER PARK 9700 -M -M * 35.4 -M *
LAPRELE CREEK 8320 .0 .0 100* 18.3 22.3 82
RENO HILL 8400 .0 .0 100* 18.7 28.5 66
ROACH 9700 .0 .0 100* 27.3 34.4 79
SAND LAKE 10080 .0 .0 100* 37.7 32.1 117
SOUTH PASS 9040 .1 .0 * 30.5 28.0 109
WINDY PEAK 7840 .0 .0 100* 17.4 20.0 87
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Basin wide percent of average * 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 25.0 22.9 109
DIVIDE PEAK 8800 .0 .0 100* 30.7 33.7 91
OLD BATTLE 10000 .0 .0 100* 49.9 43.8 114
SANDSTONE RS 8150 .0 .0 100* 29.3 28.8 102
WHISKEY PARK 8950 .0 .0 100* 44.0 41.5 106
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Basin wide percent of average * 105
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 .0 * 24.6 23.5 105
BLIND BULL SUM 8650 .1 .0 * 29.7 32.2 92
EAST RIM DIVIDE 7930 .0 .0 100* 20.5 21.9 94
ELKHART PARK G.S. 9400 .0 .0 100* 24.9 23.1 108
GROS VENTRE SUMMIT 8775 .0 .0 100* 25.1 23.0 109
KENDALL R.S. 7740 .0 .0 100* 23.2 22.4 104
LOOMIS PARK 8240 .0 .0 100* 28.1 27.2 103
NEW FORK LAKE 8340 .0 .0 100* 22.0 20.9 105
SNIDER BASIN 8250 .0 .0 100* 20.4 21.9 93
SPRING CREEK DIVIDE 9000 .0 .0 100* 33.6 37.0 91
TRIPLE PEAK 8500 .1 .0 * 33.9 43.1 79
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Basin wide percent of average * 97
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 20.9 19.3 108
HEWINTA 9500 .0 .0 100* 20.6 22.8 90
HICKERSON PARK 9150 -M .0 * 25.6 19.0 135
HOLE-IN-ROCK 9150 .0 .0 100* 23.4 19.0 123
INDIAN CREEK 9425 .1 .0 * 31.8 35.7 89
KELLEY R.S. 8180 .0 .0 100* 28.3 27.1 104
STEEL CREEK PARK 10100 .0 .0 100* 30.1 26.2 115
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Basin wide percent of average * 107
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 32.4 27.0 120
HAYDEN FORK 9400 .0 .0 100* 33.2 30.2 110
KELLEY R.S. 8180 .0 .0 100* 28.3 27.1 104
LILY LAKE 9050 -M .0 * 30.1 24.6 122
MONTE CRISTO 8960 .4 .0 * 42.1 36.7 115
SALT RIVER SUMMIT 7600 .1 .0 * 31.0 24.4 127
TRIAL LAKE 9960 .1 .0 * 37.8 35.6 106
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Basin wide percent of average * 114
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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.
