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: JULY 30 , 1997
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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 .2 .0 * 48.0 30.8 156
COTTONWOOD CREEK 7600 .0 .0 100* 48.3 34.3 141
GRANITE CREEK 6770 .0 .0 100* 42.0 33.8 124
GRASSY LAKE 7265 .0 .0 100* 71.4 51.1 140
GROS VENTRE SUMMIT 8775 .0 .0 100* 30.1 22.9 131
LEWIS LAKE DIVIDE 7860 .0 .0 100* 71.8 51.9 138
PHILLIPS BENCH 8200 .0 .0 100* 61.0 40.9 149
SALT RIVER SUMMIT 7600 .0 .0 100* 33.9 24.3 140
SNAKE RIVER STATION 6920 .0 .0 100* 49.0 35.8 137
SPRING CREEK DIVIDE 9000 .1 .0 * 43.4 36.9 118
THUMB DIVIDE 7980 .0 .0 100* 45.0 28.9 156
TOGWOTEE PASS 9580 .0 .0 100* 49.7 38.9 128
TWO OCEAN PLATEAU 9360 -M .0 * 59.5 42.5 140
WILLOW CREEK 8450 .1 .0 * 65.8 44.0 150
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Basin wide percent of average * 139
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .2 .0 * 42.1 29.5 143
BLACK BEAR 7950 -M .0 * 84.5 56.4 150
CANYON 7940 .3 .0 * 34.2 23.2 147
FISHER CREEK 9100 .6 .0 * 68.3 53.5 128
MADISON PLATEAU 7750 .1 .0 * 52.0 37.9 137
NORTHEAST ENTRANCE 7350 .0 .0 100* 32.1 21.0 153
PARKER PEAK 9400 .2 .1 200* 35.4 26.9 132
SYLVAN LAKE 8420 .0 .0 100* 47.6 31.9 149
THUMB DIVIDE 7980 .0 .0 100* 45.0 28.9 156
TWO OCEAN PLATEAU 9360 -M .0 * 59.5 42.5 140
WHISKEY CREEK 6800 .4 .0 * 40.3 32.4 124
WHITE MILL 8700 .7 .0 * -M 42.0 *
WOLVERINE 7650 .4 .0 * 24.9 22.7 110
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Basin wide percent of average 200* 139
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 36.3 25.7 141
CHRISTINA LAKE 9980 .0 .0 100* 32.0 27.6 116
COLD SPRINGS 9630 .2 .0 * 23.4 19.8 118
HOBBS PARK 10100 .0 .0 100* 23.4 24.8 94
LITTLE WARM 9620 .4 .0 * 30.9 23.1 134
SOUTH PASS 9040 .2 .0 * 31.6 27.9 113
ST. LAWRENCE ALT 8620 .0 .0 100* 21.1 18.3 115
TOGWOTEE PASS 9580 .0 .0 100* 49.7 38.9 128
TOWNSEND CREEK 8700 .0 .0 100* 23.0 22.2 104
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Basin wide percent of average * 119
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 35.3 29.4 120
BEAR TRAP MEADOW 7900 .1 .0 * 22.2 17.6 126
BLACKWATER 9780 .2 .0 * 43.0 30.6 141
BONE SPRINGS DIV 9350 .2 .0 * 31.5 27.3 115
EVENING STAR 9200 .1 .0 * 54.9 37.4 147
GRAVE SPRINGS 8550 .2 -M * 22.6 20.6 110
KIRWIN 9550 .2 .0 * 29.2 21.5 136
LOST CREEK 8080 -M .0 * -M 23.0 *
MARQUETTE 8760 -M .0 * 26.0 22.0 118
MIDDLE POWDER 7760 .0 .0 100* 29.0 22.5 129
OWL CREEK 8975 .2 .0 * 16.9 14.4 117
POWDER RIVER PASS 9480 .3 .0 * 32.6 22.3 146
SHELL CREEK 9580 .1 .0 * 27.2 24.8 110
SYLVAN LAKE 8420 .0 .0 100* 47.6 31.9 149
SYLVAN ROAD 8120 .4 .0 * 36.9 27.1 136
TIMBER CREEK 7950 .3 .0 * 19.9 17.5 114
YOUNTS PEAK 8350 .4 .0 * 37.8 26.8 141
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Basin wide percent of average * 130
SHOSHONE RIVER
BLACKWATER 9780 .2 .0 * 43.0 30.6 141
EVENING STAR 9200 .1 .0 * 54.9 37.4 147
KIRWIN 9550 .2 .0 * 29.2 21.5 136
MARQUETTE 8760 -M .0 * 26.0 22.0 118
SYLVAN LAKE 8420 .0 .0 100* 47.6 31.9 149
SYLVAN ROAD 8120 .4 .0 * 36.9 27.1 136
YOUNTS PEAK 8350 .4 .0 * 37.8 26.8 141
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Basin wide percent of average * 140
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .0 * 22.2 17.6 126
BONE SPRINGS DIV 9350 .2 .0 * 31.5 27.3 115
BURGESS JUNCTION 7880 .1 .0 * 26.7 22.0 121
CLOUD PEAK RESERVOIR 9860 .2 .0 * 32.1 26.3 122
DOME LAKE 8880 .1 .0 * 29.7 24.3 122
GRAVE SPRINGS 8550 .2 -M * 22.6 20.6 110
HANSEN SAWMILL 8760 .0 .0 100* -M 17.3 *
LOST CREEK 8080 -M .0 * -M 23.0 *
MIDDLE POWDER 7760 .0 .0 100* 29.0 22.5 129
POWDER RIVER PASS 9480 .3 .0 * 32.6 22.3 146
SUCKER CREEK 8880 .0 .0 100* 30.8 25.3 122
TIE CREEK 6870 .1 -M * 30.8 21.1 146
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Basin wide percent of average * 126
BELLE FOURCHE
BLIND PARK 6890 -M .0 * -M 24.4 *
NORTH RAPID CREEK 6130 .3 -M * 31.1 -M *
WARREN PEAK 6520 .3 .0 * 33.4 18.5 181
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Basin wide percent of average * 181*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 44.0 33.9 130
DIVIDE PEAK 8800 .0 .0 100* 33.9 33.5 101
ELK RIVER 8700 .1 .0 * 35.0 27.6 127
JOE WRIGHT 10120 .0 .0 100* 44.1 40.3 109
NORTH FRENCH CREEK 10100 .1 .0 * 42.0 36.1 116
OLD BATTLE 10000 .0 .0 100* 51.9 43.6 119
SOUTH BRUSH CREEK 8400 .0 .0 100* 26.3 27.4 96
TOWER 10500 1.5 .0 * 67.1 53.5 125
WEBBER SPRINGS 9200 .0 .0 100* 45.0 37.3 121
WILLOW CREEK PASS 9540 .1 .0 * 25.6 22.1 116
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Basin wide percent of average * 117
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 41.0 30.6 134
CASPER MTN. 7900 .0 .0 100* 30.8 27.0 114
CHRISTINA LAKE 9980 .0 .0 100* 32.0 27.6 116
DEADMAN HILL 10220 .0 .0 100* 29.3 28.9 101
LAPRELE CREEK 8320 .0 .0 100* 22.8 22.2 103
RENO HILL 8400 .0 .0 100* 30.9 28.4 109
ROACH 9700 .0 .0 100* 31.8 34.3 93
SAND LAKE 10080 .0 .0 100* 42.8 32.0 134
SOUTH PASS 9040 .2 .0 * 31.6 27.9 113
WINDY PEAK 7840 .0 .0 100* 19.5 19.9 98
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Basin wide percent of average * 112
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .0 * 18.0 22.8 79
DIVIDE PEAK 8800 .0 .0 100* 33.9 33.5 101
OLD BATTLE 10000 .0 .0 100* 51.9 43.6 119
SANDSTONE RS 8150 .0 .0 100* 29.2 28.6 102
WHISKEY PARK 8950 .0 .0 100* 47.1 41.4 114
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.1 23.4 99
BLIND BULL SUM 8650 .0 .0 100* 45.9 32.1 143
EAST RIM DIVIDE 7930 .0 .0 100* 25.0 21.8 115
ELKHART PARK G.S. 9400 .0 .0 100* 27.4 23.0 119
GROS VENTRE SUMMIT 8775 .0 .0 100* 30.1 22.9 131
KENDALL R.S. 7740 .1 .0 * 32.5 22.3 146
LOOMIS PARK 8240 .0 .0 100* 37.2 27.1 137
NEW FORK LAKE 8340 .0 .0 100* 21.2 20.8 102
SNIDER BASIN 8250 .0 .0 100* 24.6 21.8 113
SPRING CREEK DIVIDE 9000 .1 .0 * 43.4 36.9 118
TRIPLE PEAK 8500 .0 .0 100* 51.8 42.9 121
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Basin wide percent of average * 123
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 22.6 19.2 118
HEWINTA 9500 .0 .0 100* 22.9 22.7 101
HICKERSON PARK 9150 .0 .0 100* 17.2 18.9 91
HOLE-IN-ROCK 9150 .0 .0 100* 17.6 18.9 93
INDIAN CREEK 9425 .0 .0 100* 41.3 35.6 116
KELLEY R.S. 8180 .0 .0 100* 39.1 27.0 145
STEEL CREEK PARK 10100 .2 .0 * 24.8 25.9 96
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Basin wide percent of average * 110
UPPER BEAR RIVER
BUG LAKE 7950 .1 .0 * 39.4 27.0 146
HAYDEN FORK 9400 .0 .0 100* 34.0 30.1 113
KELLEY R.S. 8180 .0 .0 100* 39.1 27.0 145
LILY LAKE 9050 .0 .0 100* 28.9 24.5 118
MONTE CRISTO 8960 .3 .0 * 45.2 36.6 123
SALT RIVER SUMMIT 7600 .0 .0 100* 33.9 24.3 140
TRIAL LAKE 9960 .1 .0 * 44.6 35.4 126
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Basin wide percent of average * 129
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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.