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 SATURDAY: JULY 19 , 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 * 46.5 30.4 153
COTTONWOOD CREEK 7600 .0 .0 100* 47.5 33.8 141
GRANITE CREEK 6770 .0 .0 100* 41.0 33.1 124
GRASSY LAKE 7265 .0 .0 100* 70.8 50.3 141
GROS VENTRE SUMMIT 8775 .0 .0 100* 28.9 22.5 128
LEWIS LAKE DIVIDE 7860 .3 .0 * 71.0 51.1 139
PHILLIPS BENCH 8200 .7 .0 * 59.2 40.2 147
SALT RIVER SUMMIT 7600 .0 .0 100* 33.3 23.8 140
SNAKE RIVER STATION 6920 .0 .0 100* 48.0 35.3 136
SPRING CREEK DIVIDE 9000 .1 .0 * 42.9 36.4 118
THUMB DIVIDE 7980 .0 .0 100* 44.3 28.5 155
TOGWOTEE PASS 9580 1.5 .0 * 46.3 38.3 121
TWO OCEAN PLATEAU 9360 -M .0 * 57.8 41.8 138
WILLOW CREEK 8450 .0 .0 100* 64.8 43.3 150
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Basin wide percent of average * 138
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .3 .0 * 41.9 28.7 146
BLACK BEAR 7950 -M .0 * 83.3 55.6 150
CANYON 7940 .2 .0 * 33.4 22.5 148
FISHER CREEK 9100 .8 .0 * 66.4 52.5 126
MADISON PLATEAU 7750 .0 .0 100* 50.5 37.3 135
NORTHEAST ENTRANCE 7350 .1 .0 * 30.9 20.2 153
PARKER PEAK 9400 .2 .5 40* 34.7 26.0 133
SYLVAN LAKE 8420 .0 .0 100* 46.4 31.0 150
THUMB DIVIDE 7980 .0 .0 100* 44.3 28.5 155
TWO OCEAN PLATEAU 9360 -M .0 * 57.8 41.8 138
WHISKEY CREEK 6800 .3 .0 * 40.1 31.7 126
WHITE MILL 8700 .8 .0 * 45.0 41.2 109
WOLVERINE 7650 .3 .0 * 24.1 21.8 111
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Basin wide percent of average 40* 136
WIND RIVER
BURROUGHS CREEK 8750 .0 .0 100* 34.2 25.1 136
CHRISTINA LAKE 9980 .0 .0 100* 31.5 26.9 117
COLD SPRINGS 9630 .2 .0 * 22.1 19.1 116
HOBBS PARK 10100 .0 .0 100* 22.9 24.1 95
LITTLE WARM 9620 .4 .0 * 29.9 22.4 133
SOUTH PASS 9040 .3 .0 * 31.6 27.3 116
ST. LAWRENCE ALT 8620 .0 .0 100* 20.2 17.7 114
TOGWOTEE PASS 9580 1.5 .0 * 46.3 38.3 121
TOWNSEND CREEK 8700 .1 .0 * 22.3 21.7 103
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Basin wide percent of average * 117
BIGHORN BASIN
BALD MTN. 9375 .2 .0 * 33.0 28.7 115
BEAR TRAP MEADOW 7900 .1 .0 * 20.2 17.2 117
BLACKWATER 9780 .2 .2 100* 41.8 29.6 141
BONE SPRINGS DIV 9350 .2 .0 * 30.0 26.5 113
EVENING STAR 9200 .1 .3 33* 53.9 36.2 149
GRAVE SPRINGS 8550 .1 -M * 19.5 20.1 97
KIRWIN 9550 .2 .0 * 27.3 20.4 134
LOST CREEK 8080 -M .0 * -M 22.4 *
MARQUETTE 8760 .0 .0 100* 24.8 21.2 117
MIDDLE POWDER 7760 .0 .0 100* 26.5 22.0 120
OWL CREEK 8975 .2 .0 * 15.1 13.7 110
POWDER RIVER PASS 9480 .2 .0 * 30.0 21.8 138
SHELL CREEK 9580 .1 .0 * 25.5 24.2 105
SYLVAN LAKE 8420 .0 .0 100* 46.4 31.0 150
SYLVAN ROAD 8120 .3 .0 * 36.0 26.3 137
TIMBER CREEK 7950 .2 .0 * 18.2 16.9 108
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* 41.8 29.6 141
EVENING STAR 9200 .1 .3 33* 53.9 36.2 149
KIRWIN 9550 .2 .0 * 27.3 20.4 134
MARQUETTE 8760 .0 .0 100* 24.8 21.2 117
SYLVAN LAKE 8420 .0 .0 100* 46.4 31.0 150
SYLVAN ROAD 8120 .3 .0 * 36.0 26.3 137
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 * 20.2 17.2 117
BONE SPRINGS DIV 9350 .2 .0 * 30.0 26.5 113
BURGESS JUNCTION 7880 .1 .0 * 24.9 21.3 117
CLOUD PEAK RESERVOIR 9860 .2 .0 * 29.6 25.6 116
DOME LAKE 8880 .1 .0 * 27.0 23.7 114
GRAVE SPRINGS 8550 .1 -M * 19.5 20.1 97
HANSEN SAWMILL 8760 .0 .0 100* 21.3 16.8 127
LOST CREEK 8080 -M .0 * -M 22.4 *
MIDDLE POWDER 7760 .0 .0 100* 26.5 22.0 120
POWDER RIVER PASS 9480 .2 .0 * 30.0 21.8 138
SUCKER CREEK 8880 .1 .0 * 29.7 24.6 121
TIE CREEK 6870 .1 -M * 28.5 20.4 140
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Basin wide percent of average * 120
BELLE FOURCHE
BLIND PARK 6890 .4 .0 * 27.0 23.5 115
NORTH RAPID CREEK 6130 .1 -M * 26.8 -M *
WARREN PEAK 6520 .2 .0 * 32.0 17.8 180
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Basin wide percent of average * 143
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 43.6 33.3 131
DIVIDE PEAK 8800 .0 .0 100* 33.3 33.0 101
ELK RIVER 8700 .1 .0 * 34.7 27.1 128
JOE WRIGHT 10120 .0 .0 100* 44.1 39.2 112
NORTH FRENCH CREEK 10100 .0 .0 100* 41.4 35.4 117
OLD BATTLE 10000 .0 .0 100* 51.3 42.9 120
SOUTH BRUSH CREEK 8400 .0 .0 100* 26.0 26.8 97
TOWER 10500 1.4 .0 * 66.2 52.8 125
WEBBER SPRINGS 9200 .0 .0 100* 45.0 36.7 123
WILLOW CREEK PASS 9540 .2 .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* 39.2 29.9 131
CASPER MTN. 7900 .0 .0 100* 30.7 26.4 116
CHRISTINA LAKE 9980 .0 .0 100* 31.5 26.9 117
DEADMAN HILL 10220 .3 .0 * 28.8 28.1 102
LAPRELE CREEK 8320 .2 .0 * 22.3 21.5 104
RENO HILL 8400 .1 .0 * 30.9 27.8 111
ROACH 9700 .0 .0 100* 31.5 33.5 94
SAND LAKE 10080 .0 .0 100* 42.0 31.6 133
SOUTH PASS 9040 .3 .0 * 31.6 27.3 116
WINDY PEAK 7840 .1 .0 * 18.6 19.2 97
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .5 .0 * 17.5 22.4 78
DIVIDE PEAK 8800 .0 .0 100* 33.3 33.0 101
OLD BATTLE 10000 .0 .0 100* 51.3 42.9 120
SANDSTONE RS 8150 .0 .0 100* 29.2 28.0 104
WHISKEY PARK 8950 .0 .0 100* 46.6 40.7 114
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Basin wide percent of average * 107
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 22.8 22.9 100
BLIND BULL SUM 8650 .0 .0 100* 44.2 31.7 139
EAST RIM DIVIDE 7930 .0 .0 100* 24.2 21.4 113
ELKHART PARK G.S. 9400 .0 .0 100* 27.0 22.6 119
GROS VENTRE SUMMIT 8775 .0 .0 100* 28.9 22.5 128
KENDALL R.S. 7740 .2 .0 * 31.4 21.9 143
LOOMIS PARK 8240 .0 .0 100* 36.5 26.6 137
NEW FORK LAKE 8340 .0 .0 100* 20.2 20.4 99
SNIDER BASIN 8250 .0 .0 100* 24.2 21.4 113
SPRING CREEK DIVIDE 9000 .1 .0 * 42.9 36.4 118
TRIPLE PEAK 8500 .0 .0 100* 50.2 42.2 119
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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 .0 .0 100* 22.1 22.0 100
HICKERSON PARK 9150 .0 .0 100* 16.1 18.2 88
HOLE-IN-ROCK 9150 .0 .0 100* 17.1 18.2 94
INDIAN CREEK 9425 .0 .0 100* 40.7 35.1 116
KELLEY R.S. 8180 .1 .0 * 38.7 26.5 146
STEEL CREEK PARK 10100 .1 .0 * 23.1 24.9 93
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Basin wide percent of average * 110
UPPER BEAR RIVER
BUG LAKE 7950 -M .0 * 39.4 26.7 148
HAYDEN FORK 9400 .0 .0 100* 32.8 29.4 112
KELLEY R.S. 8180 .1 .0 * 38.7 26.5 146
LILY LAKE 9050 .0 .0 100* 27.6 24.0 115
MONTE CRISTO 8960 -M .0 * -M 36.3 *
SALT RIVER SUMMIT 7600 .0 .0 100* 33.3 23.8 140
TRIAL LAKE 9960 .0 .0 100* 43.6 34.7 126
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Basin wide percent of average * 130
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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.