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 MONDAY: JULY 28 , 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 .3 .0 * 47.5 30.7 155
COTTONWOOD CREEK 7600 .0 .0 100* 47.9 34.2 140
GRANITE CREEK 6770 .0 .0 100* 41.5 33.7 123
GRASSY LAKE 7265 .0 .0 100* 71.3 50.9 140
GROS VENTRE SUMMIT 8775 .0 .0 100* 29.6 22.8 130
LEWIS LAKE DIVIDE 7860 .0 .0 100* 71.5 51.7 138
PHILLIPS BENCH 8200 .0 .0 100* 60.4 40.8 148
SALT RIVER SUMMIT 7600 .0 .0 100* 33.5 24.2 138
SNAKE RIVER STATION 6920 .0 .0 100* 48.8 35.7 137
SPRING CREEK DIVIDE 9000 .1 .0 * 43.0 36.8 117
THUMB DIVIDE 7980 .0 .0 100* 44.5 28.8 155
TOGWOTEE PASS 9580 .0 .0 100* 48.4 38.8 125
TWO OCEAN PLATEAU 9360 -M .0 * 58.3 42.4 138
WILLOW CREEK 8450 .1 .0 * 65.7 43.9 150
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Basin wide percent of average * 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .3 .0 * 41.9 29.3 143
BLACK BEAR 7950 -M .0 * 84.0 56.2 149
CANYON 7940 .3 .0 * 34.1 23.1 148
FISHER CREEK 9100 .5 .0 * 67.3 53.3 126
MADISON PLATEAU 7750 .1 .0 * 51.5 37.8 136
NORTHEAST ENTRANCE 7350 .0 .0 100* 31.6 20.8 152
PARKER PEAK 9400 .2 .2 100* 35.1 26.7 131
SYLVAN LAKE 8420 .0 .0 100* 47.0 31.8 148
THUMB DIVIDE 7980 .0 .0 100* 44.5 28.8 155
TWO OCEAN PLATEAU 9360 -M .0 * 58.3 42.4 138
WHISKEY CREEK 6800 .3 .0 * 40.3 32.3 125
WHITE MILL 8700 .6 .0 * 45.9 41.9 110
WOLVERINE 7650 .4 .0 * 24.7 22.5 110
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Basin wide percent of average 100* 136
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 35.7 25.6 139
CHRISTINA LAKE 9980 .0 .0 100* 31.7 27.4 116
COLD SPRINGS 9630 .2 .0 * 22.6 19.7 115
HOBBS PARK 10100 .0 .0 100* 23.5 24.7 95
LITTLE WARM 9620 .4 .0 * 30.7 22.9 134
SOUTH PASS 9040 .3 .0 * 31.4 27.8 113
ST. LAWRENCE ALT 8620 .0 .0 100* 20.7 18.2 114
TOGWOTEE PASS 9580 .0 .0 100* 48.4 38.8 125
TOWNSEND CREEK 8700 .1 .0 * 22.8 22.1 103
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Basin wide percent of average * 118
BIGHORN BASIN
BALD MTN. 9375 -M .0 * 34.8 29.3 119
BEAR TRAP MEADOW 7900 .1 .0 * 21.4 17.5 122
BLACKWATER 9780 .2 .0 * 42.4 30.4 139
BONE SPRINGS DIV 9350 .1 .0 * 31.1 27.1 115
EVENING STAR 9200 .1 .1 100* 54.2 37.2 146
GRAVE SPRINGS 8550 .1 -M * 22.0 20.5 107
KIRWIN 9550 -M .0 * -M 21.3 *
LOST CREEK 8080 -M .0 * -M 22.9 *
MARQUETTE 8760 .0 .0 100* 25.8 21.8 118
MIDDLE POWDER 7760 .0 .0 100* 27.8 22.4 124
OWL CREEK 8975 .3 .0 * 16.0 14.3 112
POWDER RIVER PASS 9480 .2 .0 * 31.8 22.2 143
SHELL CREEK 9580 .0 .0 100* 27.2 24.7 110
SYLVAN LAKE 8420 .0 .0 100* 47.0 31.8 148
SYLVAN ROAD 8120 .3 .0 * 36.1 27.0 134
TIMBER CREEK 7950 .2 .0 * 19.5 17.4 112
YOUNTS PEAK 8350 .4 .0 * 37.5 26.6 141
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Basin wide percent of average 100* 128
SHOSHONE RIVER
BLACKWATER 9780 .2 .0 * 42.4 30.4 139
EVENING STAR 9200 .1 .1 100* 54.2 37.2 146
KIRWIN 9550 -M .0 * -M 21.3 *
MARQUETTE 8760 .0 .0 100* 25.8 21.8 118
SYLVAN LAKE 8420 .0 .0 100* 47.0 31.8 148
SYLVAN ROAD 8120 .3 .0 * 36.1 27.0 134
YOUNTS PEAK 8350 .4 .0 * 37.5 26.6 141
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Basin wide percent of average 100* 139
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .0 * 21.4 17.5 122
BONE SPRINGS DIV 9350 .1 .0 * 31.1 27.1 115
BURGESS JUNCTION 7880 .1 .0 * 26.5 21.8 122
CLOUD PEAK RESERVOIR 9860 .2 .0 * 31.3 26.2 119
DOME LAKE 8880 .1 .0 * 29.6 24.2 122
GRAVE SPRINGS 8550 .1 -M * 22.0 20.5 107
HANSEN SAWMILL 8760 .0 .0 100* 23.0 17.2 134
LOST CREEK 8080 -M .0 * -M 22.9 *
MIDDLE POWDER 7760 .0 .0 100* 27.8 22.4 124
POWDER RIVER PASS 9480 .2 .0 * 31.8 22.2 143
SUCKER CREEK 8880 .1 .0 * 30.6 25.2 121
TIE CREEK 6870 .1 -M * 30.6 21.0 146
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Basin wide percent of average * 125
BELLE FOURCHE
BLIND PARK 6890 -M .0 * -M 24.2 *
NORTH RAPID CREEK 6130 .2 -M * 30.9 -M *
WARREN PEAK 6520 .3 .0 * 33.1 18.4 180
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Basin wide percent of average * 180*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 43.8 33.8 130
DIVIDE PEAK 8800 .0 .0 100* 33.5 33.4 100
ELK RIVER 8700 .1 .0 * 34.4 27.5 125
JOE WRIGHT 10120 .0 .0 100* 44.1 40.1 110
NORTH FRENCH CREEK 10100 .0 .0 100* 41.7 36.0 116
OLD BATTLE 10000 .0 .0 100* 51.4 43.5 118
SOUTH BRUSH CREEK 8400 .0 .0 100* 26.4 27.3 97
TOWER 10500 1.5 .0 * 66.0 53.3 124
WEBBER SPRINGS 9200 .0 .0 100* 45.0 37.2 121
WILLOW CREEK PASS 9540 .1 .0 * 25.1 22.0 114
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Basin wide percent of average * 116
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 39.4 30.5 129
CASPER MTN. 7900 .0 .0 100* 30.8 26.9 114
CHRISTINA LAKE 9980 .0 .0 100* 31.7 27.4 116
DEADMAN HILL 10220 .0 .0 100* 29.0 28.8 101
LAPRELE CREEK 8320 .0 .0 100* 22.7 22.1 103
RENO HILL 8400 .0 .0 100* 30.9 28.3 109
ROACH 9700 .0 .0 100* 31.5 34.1 92
SAND LAKE 10080 .0 .0 100* 42.5 31.9 133
SOUTH PASS 9040 .3 .0 * 31.4 27.8 113
WINDY PEAK 7840 .0 .0 100* 19.2 19.7 97
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Basin wide percent of average * 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 .0 * 17.6 22.8 77
DIVIDE PEAK 8800 .0 .0 100* 33.5 33.4 100
OLD BATTLE 10000 .0 .0 100* 51.4 43.5 118
SANDSTONE RS 8150 .0 .0 100* 29.1 28.5 102
WHISKEY PARK 8950 .0 .0 100* 47.0 41.2 114
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Basin wide percent of average * 105
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.1 23.3 99
BLIND BULL SUM 8650 .0 .0 100* 45.4 32.0 142
EAST RIM DIVIDE 7930 .0 .0 100* 24.7 21.7 114
ELKHART PARK G.S. 9400 .0 .0 100* 27.2 22.9 119
GROS VENTRE SUMMIT 8775 .0 .0 100* 29.6 22.8 130
KENDALL R.S. 7740 .1 .0 * 32.4 22.2 146
LOOMIS PARK 8240 .0 .0 100* 36.8 27.0 136
NEW FORK LAKE 8340 .0 .0 100* 21.4 20.7 103
SNIDER BASIN 8250 .0 .0 100* 24.4 21.7 112
SPRING CREEK DIVIDE 9000 .1 .0 * 43.0 36.8 117
TRIPLE PEAK 8500 .0 .0 100* 51.6 42.8 121
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Basin wide percent of average * 122
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 22.4 19.2 117
HEWINTA 9500 .0 .0 100* 22.7 22.6 100
HICKERSON PARK 9150 .0 .0 100* 17.1 18.8 91
HOLE-IN-ROCK 9150 .0 .0 100* 17.6 18.8 94
INDIAN CREEK 9425 .0 .0 100* 40.9 35.5 115
KELLEY R.S. 8180 .0 .0 100* 38.9 26.9 145
STEEL CREEK PARK 10100 .2 .0 * 25.1 25.7 98
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Basin wide percent of average * 110
UPPER BEAR RIVER
BUG LAKE 7950 .1 .0 * 39.5 26.9 147
HAYDEN FORK 9400 .0 .0 100* 33.7 30.0 112
KELLEY R.S. 8180 .0 .0 100* 38.9 26.9 145
LILY LAKE 9050 .0 .0 100* 28.3 24.4 116
MONTE CRISTO 8960 .2 .0 * 45.2 36.6 123
SALT RIVER SUMMIT 7600 .0 .0 100* 33.5 24.2 138
TRIAL LAKE 9960 -M .0 * 44.2 35.3 125
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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.