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 FRIDAY: JULY 18 , 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 -M .0 * -M 30.3 *
COTTONWOOD CREEK 7600 .0 .0 100* 47.5 33.7 141
GRANITE CREEK 6770 .0 .0 100* 41.1 33.1 124
GRASSY LAKE 7265 .0 .0 100* 70.8 50.2 141
GROS VENTRE SUMMIT 8775 .0 .0 100* 29.2 22.4 130
LEWIS LAKE DIVIDE 7860 .4 .0 * 71.0 51.0 139
PHILLIPS BENCH 8200 .7 .0 * -M 40.2 *
SALT RIVER SUMMIT 7600 .0 .0 100* 33.3 23.8 140
SNAKE RIVER STATION 6920 .0 .0 100* 48.0 35.2 136
SPRING CREEK DIVIDE 9000 .1 .0 * 42.8 36.4 118
THUMB DIVIDE 7980 .0 .0 100* -M 28.4 *
TOGWOTEE PASS 9580 -M .0 * -M 38.3 *
TWO OCEAN PLATEAU 9360 -M .0 * 57.8 41.8 138
WILLOW CREEK 8450 .0 .0 100* 64.3 43.3 148
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Basin wide percent of average * 136
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .2 .0 * 41.8 28.7 146
BLACK BEAR 7950 -M .0 * 83.4 55.6 150
CANYON 7940 .2 .0 * 33.5 22.5 149
FISHER CREEK 9100 .8 .0 * 66.4 52.4 127
MADISON PLATEAU 7750 .0 .0 100* 50.5 37.2 136
NORTHEAST ENTRANCE 7350 .1 .0 * 30.9 20.2 153
PARKER PEAK 9400 .1 .6 17* 34.5 26.0 133
SYLVAN LAKE 8420 .0 .0 100* 46.4 30.9 150
THUMB DIVIDE 7980 .0 .0 100* -M 28.4 *
TWO OCEAN PLATEAU 9360 -M .0 * 57.8 41.8 138
WHISKEY CREEK 6800 .3 .0 * 40.1 31.6 127
WHITE MILL 8700 .6 .0 * 44.9 41.1 109
WOLVERINE 7650 .3 .0 * 24.0 21.8 110
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Basin wide percent of average 17* 135
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 34.1 25.1 136
CHRISTINA LAKE 9980 .0 .0 100* 31.4 26.8 117
COLD SPRINGS 9630 .1 .0 * 22.0 19.1 115
HOBBS PARK 10100 .0 .0 100* 23.4 24.1 97
LITTLE WARM 9620 .3 .0 * 30.1 22.3 135
SOUTH PASS 9040 .2 .0 * 31.6 27.2 116
ST. LAWRENCE ALT 8620 .0 .0 100* 20.2 17.6 115
TOGWOTEE PASS 9580 -M .0 * -M 38.3 *
TOWNSEND CREEK 8700 .0 .0 100* 22.1 21.6 102
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Basin wide percent of average * 117
BIGHORN BASIN
BALD MTN. 9375 .2 .0 * 33.3 28.7 116
BEAR TRAP MEADOW 7900 .1 .0 * 19.5 17.1 114
BLACKWATER 9780 .2 .2 100* 42.0 29.5 142
BONE SPRINGS DIV 9350 .1 .0 * 29.3 26.4 111
EVENING STAR 9200 .1 .3 33* 53.7 36.1 149
GRAVE SPRINGS 8550 .1 -M * 19.3 20.0 97
KIRWIN 9550 .2 .0 * 27.4 20.3 135
LOST CREEK 8080 -M .0 * -M 22.3 *
MARQUETTE 8760 .0 .0 100* 24.5 21.1 116
MIDDLE POWDER 7760 .0 .0 100* 26.3 21.9 120
OWL CREEK 8975 .2 .0 * 15.4 13.6 113
POWDER RIVER PASS 9480 .1 .0 * 29.5 21.8 135
SHELL CREEK 9580 .0 .0 100* 25.5 24.1 106
SYLVAN LAKE 8420 .0 .0 100* 46.4 30.9 150
SYLVAN ROAD 8120 .3 .0 * 35.8 26.2 137
TIMBER CREEK 7950 .3 .0 * 18.0 16.8 107
YOUNTS PEAK 8350 .5 .0 * 37.0 26.0 142
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Basin wide percent of average 60* 127
SHOSHONE RIVER
BLACKWATER 9780 .2 .2 100* 42.0 29.5 142
EVENING STAR 9200 .1 .3 33* 53.7 36.1 149
KIRWIN 9550 .2 .0 * 27.4 20.3 135
MARQUETTE 8760 .0 .0 100* 24.5 21.1 116
SYLVAN LAKE 8420 .0 .0 100* 46.4 30.9 150
SYLVAN ROAD 8120 .3 .0 * 35.8 26.2 137
YOUNTS PEAK 8350 .5 .0 * 37.0 26.0 142
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Basin wide percent of average 60* 140
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .1 .0 * 19.5 17.1 114
BONE SPRINGS DIV 9350 .1 .0 * 29.3 26.4 111
BURGESS JUNCTION 7880 .0 .0 100* 24.8 21.2 117
CLOUD PEAK RESERVOIR 9860 .1 .0 * 29.2 25.5 115
DOME LAKE 8880 .1 .0 * 26.5 23.6 112
GRAVE SPRINGS 8550 .1 -M * 19.3 20.0 97
HANSEN SAWMILL 8760 .0 .0 100* 21.3 16.8 127
LOST CREEK 8080 -M .0 * -M 22.3 *
MIDDLE POWDER 7760 .0 .0 100* 26.3 21.9 120
POWDER RIVER PASS 9480 .1 .0 * 29.5 21.8 135
SUCKER CREEK 8880 .0 .0 100* 29.3 24.5 120
TIE CREEK 6870 .0 -M * 28.5 20.3 140
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Basin wide percent of average * 119
BELLE FOURCHE
BLIND PARK 6890 .4 .0 * 25.9 23.5 110
NORTH RAPID CREEK 6130 .0 -M * 25.8 -M *
WARREN PEAK 6520 .1 .0 * 31.7 17.7 179
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Basin wide percent of average * 140
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 43.3 33.2 130
DIVIDE PEAK 8800 .0 .0 100* 33.6 32.9 102
ELK RIVER 8700 .1 .0 * 35.5 27.0 131
JOE WRIGHT 10120 .0 .0 100* 44.1 39.1 113
NORTH FRENCH CREEK 10100 .0 .0 100* 41.4 35.3 117
OLD BATTLE 10000 .0 .0 100* 50.8 42.9 118
SOUTH BRUSH CREEK 8400 .0 .0 100* 26.3 26.7 99
TOWER 10500 1.5 .0 * 66.1 52.7 125
WEBBER SPRINGS 9200 .0 .0 100* 45.0 36.6 123
WILLOW CREEK PASS 9540 .1 .0 * 24.8 21.4 116
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Basin wide percent of average * 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .0 100* 38.7 29.9 129
CASPER MTN. 7900 .0 .0 100* 30.8 26.4 117
CHRISTINA LAKE 9980 .0 .0 100* 31.4 26.8 117
DEADMAN HILL 10220 .3 .0 * 28.7 28.0 103
LAPRELE CREEK 8320 .3 .0 * 22.5 21.5 105
RENO HILL 8400 .0 .0 100* 30.6 27.7 110
ROACH 9700 .0 .0 100* 31.6 33.4 95
SAND LAKE 10080 .0 .0 100* 41.7 31.6 132
SOUTH PASS 9040 .2 .0 * 31.6 27.2 116
WINDY PEAK 7840 .1 .0 * 18.6 19.1 97
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 .0 * 17.4 22.4 78
DIVIDE PEAK 8800 .0 .0 100* 33.6 32.9 102
OLD BATTLE 10000 .0 .0 100* 50.8 42.9 118
SANDSTONE RS 8150 .0 .0 100* 29.3 28.0 105
WHISKEY PARK 8950 -M .0 * 46.5 40.6 115
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Basin wide percent of average * 106
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 22.7 22.9 99
BLIND BULL SUM 8650 .0 .0 100* 43.8 31.7 138
EAST RIM DIVIDE 7930 .0 .0 100* 24.3 21.4 114
ELKHART PARK G.S. 9400 .0 .0 100* 26.9 22.5 120
GROS VENTRE SUMMIT 8775 .0 .0 100* 29.2 22.4 130
KENDALL R.S. 7740 .1 .0 * 31.7 21.9 145
LOOMIS PARK 8240 .0 .0 100* 36.5 26.5 138
NEW FORK LAKE 8340 .0 .0 100* 20.8 20.4 102
SNIDER BASIN 8250 .0 .0 100* 24.2 21.4 113
SPRING CREEK DIVIDE 9000 .1 .0 * 42.8 36.4 118
TRIPLE PEAK 8500 .0 .0 100* 50.8 42.2 120
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Basin wide percent of average * 122
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 22.2 18.8 118
HEWINTA 9500 .1 .0 * 21.6 22.0 98
HICKERSON PARK 9150 .0 .0 100* 16.1 18.2 88
HOLE-IN-ROCK 9150 .0 .0 100* 16.6 18.2 91
INDIAN CREEK 9425 .0 .0 100* 40.9 35.0 117
KELLEY R.S. 8180 .1 .0 * 38.7 26.4 147
STEEL CREEK PARK 10100 .0 .0 100* 22.9 24.8 92
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Basin wide percent of average * 110
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * 39.3 26.7 147
HAYDEN FORK 9400 .0 .0 100* 33.7 29.3 115
KELLEY R.S. 8180 .1 .0 * 38.7 26.4 147
LILY LAKE 9050 .0 .0 100* 27.6 23.9 115
MONTE CRISTO 8960 -M .0 * -M 36.2 *
SALT RIVER SUMMIT 7600 .0 .0 100* 33.3 23.8 140
TRIAL LAKE 9960 .0 .0 100* 43.2 34.7 124
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Basin wide percent of average * 131
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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.