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: SEPTEMBER 22 , 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 .6 .0 * 52.3 33.5 156
COTTONWOOD CREEK 7600 .3 .0 * 52.6 37.1 142
GRANITE CREEK 6770 .2 .0 * 46.4 37.5 124
GRASSY LAKE 7265 .1 .0 * 76.5 55.2 139
GROS VENTRE SUMMIT 8775 .1 .0 * 35.5 25.4 140
LEWIS LAKE DIVIDE 7860 .0 .0 100* 76.7 56.2 136
PHILLIPS BENCH 8200 .1 .0 * 66.1 44.2 150
SALT RIVER SUMMIT 7600 -M .0 * 39.2 26.9 146
SNAKE RIVER STATION 6920 .0 .0 100* 54.1 38.7 140
SPRING CREEK DIVIDE 9000 .0 .0 100* 46.7 39.7 118
THUMB DIVIDE 7980 .0 .0 100* 49.4 31.4 157
TOGWOTEE PASS 9580 .2 .0 * 57.0 42.2 135
TWO OCEAN PLATEAU 9360 .1 .0 * 63.5 46.2 137
WILLOW CREEK 8450 .3 .0 * 71.2 47.5 150
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Basin wide percent of average * 140
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .3 0* 45.4 32.4 140
BLACK BEAR 7950 .0 .2 0* 89.4 60.8 147
CANYON 7940 .0 .0 100* 37.3 27.0 138
FISHER CREEK 9100 .1 .2 50* 75.2 58.1 129
MADISON PLATEAU 7750 .1 .1 100* 58.1 42.0 138
NORTHEAST ENTRANCE 7350 .2 .0 * 36.5 24.5 149
PARKER PEAK 9400 .3 .4 75* 39.0 31.0 126
SYLVAN LAKE 8420 .1 .3 33* 51.6 36.5 141
THUMB DIVIDE 7980 .0 .0 100* 49.4 31.4 157
TWO OCEAN PLATEAU 9360 .1 .0 * 63.5 46.2 137
WHISKEY CREEK 6800 .2 .0 * 45.8 35.9 128
WHITE MILL 8700 .2 .1 200* 59.4 46.3 128
WOLVERINE 7650 .0 .0 100* 28.8 26.1 110
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Basin wide percent of average 50* 136
WIND RIVER
BURROUGHS CREEK 8750 .1 .0 * 41.7 29.1 143
CHRISTINA LAKE 9980 -M .2 * -M 30.5 *
COLD SPRINGS 9630 .3 .0 * 28.0 22.5 124
HOBBS PARK 10100 .1 .1 100* 27.9 27.9 100
LITTLE WARM 9620 .0 .0 100* 37.0 26.4 140
SOUTH PASS 9040 .1 .1 100* 35.4 30.5 116
ST. LAWRENCE ALT 8620 .0 .0 100* 25.4 20.5 124
TOGWOTEE PASS 9580 .2 .0 * 57.0 42.2 135
TOWNSEND CREEK 8700 .0 .0 100* 27.4 24.9 110
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Basin wide percent of average 100* 125
BIGHORN BASIN
BALD MTN. 9375 .1 .3 33* 37.5 32.5 115
BEAR TRAP MEADOW 7900 .0 .0 100* 25.6 20.2 127
BLACKWATER 9780 .0 .3 0* 49.3 36.5 135
BONE SPRINGS DIV 9350 .1 .4 25* 34.0 31.4 108
EVENING STAR 9200 .0 .2 0* 60.5 43.9 138
GRAVE SPRINGS 8550 .1 -M * 25.4 23.6 108
KIRWIN 9550 -M .1 * -M 25.6 *
LOST CREEK 8080 -M .1 * -M 25.7 *
MARQUETTE 8760 .4 .1 400* 30.5 25.5 120
MIDDLE POWDER 7760 .2 .1 200* 32.3 25.3 128
OWL CREEK 8975 .0 .1 0* 19.5 16.7 117
POWDER RIVER PASS 9480 .3 .1 300* 36.3 25.1 145
SHELL CREEK 9580 .1 .3 33* 29.4 27.9 105
SYLVAN LAKE 8420 .1 .3 33* 51.6 36.5 141
SYLVAN ROAD 8120 .1 .1 100* 40.7 31.7 128
TIMBER CREEK 7950 -M .0 * 22.8 20.6 111
YOUNTS PEAK 8350 .1 .1 100* 44.1 30.7 144
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Basin wide percent of average 63* 126
SHOSHONE RIVER
BLACKWATER 9780 .0 .3 0* 49.3 36.5 135
EVENING STAR 9200 .0 .2 0* 60.5 43.9 138
KIRWIN 9550 -M .1 * -M 25.6 *
MARQUETTE 8760 .4 .1 400* 30.5 25.5 120
SYLVAN LAKE 8420 .1 .3 33* 51.6 36.5 141
SYLVAN ROAD 8120 .1 .1 100* 40.7 31.7 128
YOUNTS PEAK 8350 .1 .1 100* 44.1 30.7 144
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Basin wide percent of average 64* 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 25.6 20.2 127
BONE SPRINGS DIV 9350 .1 .4 25* 34.0 31.4 108
BURGESS JUNCTION 7880 .0 .1 0* 30.0 24.6 122
CLOUD PEAK RESERVOIR 9860 .0 .1 0* 37.3 29.6 126
DOME LAKE 8880 .1 .1 100* 32.8 27.5 119
GRAVE SPRINGS 8550 .1 -M * 25.4 23.6 108
HANSEN SAWMILL 8760 .0 .0 100* 27.2 20.3 134
LOST CREEK 8080 -M .1 * -M 25.7 *
MIDDLE POWDER 7760 .2 .1 200* 32.3 25.3 128
POWDER RIVER PASS 9480 .3 .1 300* 36.3 25.1 145
SUCKER CREEK 8880 .1 .1 100* 33.7 28.4 119
TIE CREEK 6870 .0 -M * 34.8 23.7 147
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Basin wide percent of average 80* 125
BELLE FOURCHE
BLIND PARK 6890 .4 .0 * 32.2 28.0 115
NORTH RAPID CREEK 6130 .5 -M * 37.8 -M *
WARREN PEAK 6520 -M .0 * -M 21.6 *
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Basin wide percent of average * 115*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 52.7 36.8 143
DIVIDE PEAK 8800 .0 .0 100* 38.8 37.0 105
ELK RIVER 8700 .0 .0 100* 43.5 30.5 143
JOE WRIGHT 10120 .0 .0 100* 50.7 45.0 113
NORTH FRENCH CREEK 10100 .2 .0 * 49.2 39.6 124
OLD BATTLE 10000 .1 .2 50* 58.7 47.4 124
SOUTH BRUSH CREEK 8400 .2 .0 * 32.4 30.6 106
TOWER 10500 .0 .0 100* -M 57.9 *
WEBBER SPRINGS 9200 .0 .0 100* 52.0 40.8 127
WILLOW CREEK PASS 9540 .0 .0 100* 32.9 25.7 128
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Basin wide percent of average 50* 123
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .1 0* 46.7 33.6 139
CASPER MTN. 7900 .2 .0 * 33.4 29.4 114
CHRISTINA LAKE 9980 -M .2 * -M 30.5 *
DEADMAN HILL 10220 .1 .0 * 37.1 32.2 115
LAPRELE CREEK 8320 .0 .0 100* 27.3 24.9 110
RENO HILL 8400 .1 .0 * 33.2 30.4 109
ROACH 9700 .0 .0 100* 40.9 37.2 110
SAND LAKE 10080 .1 .0 * 48.3 35.0 138
SOUTH PASS 9040 .1 .1 100* 35.4 30.5 116
WINDY PEAK 7840 .2 .0 * 24.5 21.6 113
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Basin wide percent of average 50* 119
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * 23.0 25.6 90
DIVIDE PEAK 8800 .0 .0 100* 38.8 37.0 105
OLD BATTLE 10000 .1 .2 50* 58.7 47.4 124
SANDSTONE RS 8150 .0 .0 100* 35.7 32.7 109
WHISKEY PARK 8950 .0 .0 100* 53.9 44.2 122
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Basin wide percent of average 50* 112
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .1 .0 * 26.4 25.9 102
BLIND BULL SUM 8650 1.2 .0 * 50.6 34.6 146
EAST RIM DIVIDE 7930 .2 .0 * 30.3 24.2 125
ELKHART PARK G.S. 9400 .0 .0 100* 34.5 25.4 136
GROS VENTRE SUMMIT 8775 .1 .0 * 35.5 25.4 140
KENDALL R.S. 7740 .1 .0 * 37.1 24.8 150
LOOMIS PARK 8240 .1 .0 * 45.7 30.0 152
NEW FORK LAKE 8340 .0 .0 100* 26.7 23.1 116
SNIDER BASIN 8250 .1 .0 * 27.5 24.2 114
SPRING CREEK DIVIDE 9000 .0 .0 100* 46.7 39.7 118
TRIPLE PEAK 8500 .1 .0 * 56.6 46.6 121
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Basin wide percent of average * 129
LOWER GREEN RIVER
HAMS FORK 7840 .7 .0 * 25.9 21.3 122
HEWINTA 9500 .2 .0 * 29.1 25.4 115
HICKERSON PARK 9150 .0 .0 100* 21.6 21.5 100
HOLE-IN-ROCK 9150 .0 .0 100* 22.6 21.5 105
INDIAN CREEK 9425 -M .0 * 44.9 38.6 116
KELLEY R.S. 8180 .8 .0 * -M 29.9 *
STEEL CREEK PARK 10100 .1 .2 50* 29.5 29.9 99
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Basin wide percent of average 50* 110
UPPER BEAR RIVER
BUG LAKE 7950 .1 .1 100* 44.9 29.5 152
HAYDEN FORK 9400 .0 .0 100* 42.8 33.0 130
KELLEY R.S. 8180 .8 .0 * -M 29.9 *
LILY LAKE 9050 .5 .1 500* 33.5 27.4 122
MONTE CRISTO 8960 .7 .1 700* 52.8 39.8 133
SALT RIVER SUMMIT 7600 -M .0 * 39.2 26.9 146
TRIAL LAKE 9960 .5 .1 500* 50.7 39.1 130
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Basin wide percent of average 450* 135
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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.