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 THURSDAY: JUNE 17 , 1999
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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 .0 .0 100* 34.3 28.9 119
COTTONWOOD CREEK 7600 .0 .0 100* 40.3 32.2 126
GRANITE CREEK 6770 .2 .0 * 32.0 31.2 103
GRASSY LAKE 7265 4.1 .0 * 55.4 47.8 116
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.2 21.0 111
LEWIS LAKE DIVIDE 7860 10.7 .0 * 50.4 48.7 104
PHILLIPS BENCH 8200 9.0 .0 * 41.4 38.3 109
SALT RIVER SUMMIT 7600 .3 .0 * 25.9 22.4 116
SNAKE RIVER STATION 6920 .0 .0 100* 34.3 33.7 103
SPRING CREEK DIVIDE 9000 13.0 .0 * 39.3 34.8 113
THUMB DIVIDE 7980 -M .0 * -M 27.0 *
TOGWOTEE PASS 9580 -M 11.9 * 38.8 36.5 107
TWO OCEAN PLATEAU 9360 -M 13.9 * -M 39.8 *
WILLOW CREEK 8450 .7 .0 * 53.8 41.3 131
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Basin wide percent of average * 113
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 15.9 8.6 184 30.7 26.4 116
BLACK BEAR 7950 37.5 12.5 303 65.3 52.8 124
CANYON 7940 .2 .3 50* 25.7 20.4 127
FISHER CREEK 9100 33.4 19.5 172 47.8 49.2 98
MADISON PLATEAU 7750 -M .5 * 42.5 34.9 122
NORTHEAST ENTRANCE 7350 .0 .0 100* 20.4 17.9 114
PARKER PEAK 9400 9.5 10.4 92 -M 23.4 *
SYLVAN LAKE 8420 -M 5.3 * -M 28.2 *
THUMB DIVIDE 7980 -M .0 * -M 27.0 *
TWO OCEAN PLATEAU 9360 -M 13.9 * -M 39.8 *
WHISKEY CREEK 6800 -M .0 * -M 29.4 *
WHITE MILL 8700 17.5 9.9 179 33.3 38.4 87
WOLVERINE 7650 -M .0 * -M 19.4 *
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Basin wide percent of average 188* 111
WIND RIVER
BURROUGHS CREEK 8750 1.9 .0 * 26.7 23.5 114
COLD SPRINGS 9630 .0 .0 100* 26.9 17.2 157
DEER PARK 9700 10.7 -M * 37.8 -M *
HOBBS PARK 10100 14.1 3.2 455 32.0 22.2 145
LITTLE WARM 9620 -M .0 * -M 20.4 *
SOUTH PASS 9040 -M 3.5 * 34.5 25.4 137
ST. LAWRENCE ALT 8620 .0 .0 100* 23.7 16.0 149
TOGWOTEE PASS 9580 -M 11.9 * 38.8 36.5 107
TOWNSEND CREEK 8700 .0 .0 100* 28.4 19.9 144
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Basin wide percent of average 455* 132
BIGHORN BASIN
BALD MTN. 9375 12.9 8.5 153 28.9 26.7 109
BEAR TRAP MEADOW 7900 .0 .0 100* 20.4 15.4 133
BLACKWATER 9780 27.9 7.3 388 34.3 26.2 132
BONE SPRINGS DIV 9350 3.5 2.3 160 29.4 23.9 124
EVENING STAR 9200 -M 14.0 * -M 32.3 *
GRAVE SPRINGS 8550 .2 .0 * 21.2 17.9 119
KIRWIN 9550 2.4 .9 300* 24.5 17.5 141
MARQUETTE 8760 2.0 .9 250* 24.7 18.7 133
MIDDLE POWDER 7760 .0 .0 100* 22.9 19.9 116
OWL CREEK 8975 .0 .0 100* 19.5 11.9 166
POWDER RIVER PASS 9480 .0 .0 100* 25.9 19.7 132
SHELL CREEK 9580 1.5 3.5 43 24.9 21.7 115
SYLVAN LAKE 8420 -M 5.3 * -M 28.2 *
SYLVAN ROAD 8120 -M .0 * -M 23.5 *
TIMBER CREEK 7950 .0 .0 100* 20.7 15.0 138
YOUNTS PEAK 8350 1.2 1.9 67* 25.7 23.7 109
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Basin wide percent of average 208* 126
SHOSHONE RIVER
BLACKWATER 9780 27.9 7.3 388 34.3 26.2 132
EVENING STAR 9200 -M 14.0 * -M 32.3 *
KIRWIN 9550 2.4 .9 300* 24.5 17.5 141
MARQUETTE 8760 2.0 .9 250* 24.7 18.7 133
SYLVAN LAKE 8420 -M 5.3 * -M 28.2 *
SYLVAN ROAD 8120 -M .0 * -M 23.5 *
YOUNTS PEAK 8350 1.2 1.9 67* 25.7 23.7 109
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Basin wide percent of average 317* 127
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 20.4 15.4 133
BIG GOOSE 7990 .0 -M * 21.9 -M *
BONE SPRINGS DIV 9350 3.5 2.3 160 29.4 23.9 124
BURGESS JUNCTION 7880 .0 .0 100* 21.4 19.0 113
CLOUD PEAK RESERVOIR 9860 .7 2.9 25 28.7 23.2 125
DOME LAKE 8880 -M .9 * 20.2 21.7 94
GRAVE SPRINGS 8550 .2 .0 * 21.2 17.9 119
HANSEN SAWMILL 8760 .2 .0 * 20.0 14.7 137
MIDDLE POWDER 7760 .0 .0 100* 22.9 19.9 116
POWDER RIVER PASS 9480 .0 .0 100* 25.9 19.7 132
SUCKER CREEK 8880 .0 .2 0* 26.2 22.2 119
TIE CREEK 6870 .0 -M * 22.2 18.4 122
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Basin wide percent of average 81* 120
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 26.9 20.4 132
NORTH RAPID CREEK 6130 .0 -M * 24.9 -M *
WARREN PEAK 6520 .2 .0 * -M 15.2 *
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Basin wide percent of average * 132*
UPPER N. PLATTE RIVER
COLUMBINE 9400 -M .0 * -M 31.7 *
DIVIDE PEAK 8800 -M .3 * -M 31.5 *
ELK RIVER 8700 -M .0 * -M 25.5 *
JOE WRIGHT 10120 6.3 6.5 96 38.8 36.3 107
NORTH FRENCH CREEK 10100 -M 11.4 * -M 33.4 *
OLD BATTLE 10000 20.0 8.5 239 52.4 40.9 129
SOUTH BRUSH CREEK 8400 -M .0 * 29.5 24.7 120
TOWER 10500 31.7 25.4 126 53.7 50.7 106
WEBBER SPRINGS 9200 .0 1.9 0* 38.3 34.8 110
WILLOW CREEK PASS 9540 .0 .0 100* 20.4 19.5 105
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Basin wide percent of average 138* 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.0 3.5 198 35.5 28.2 127
CASPER MTN. 7900 .3 .9 25* 27.0 24.4 112
DEADMAN HILL 10220 .2 3.4 3 27.4 25.9 107
DEER PARK 9700 10.7 -M * 37.8 -M *
LAPRELE CREEK 8320 .0 .0 100* 26.7 19.4 138
RENO HILL 8400 -M .7 * -M 25.7 *
ROACH 9700 .2 1.0 11* 30.4 31.4 98
SAND LAKE 10080 30.9 12.1 256 44.4 29.9 149
SOUTH PASS 9040 -M 3.5 * 34.5 25.4 137
WINDY PEAK 7840 .0 .0 100* 22.9 17.0 135
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Basin wide percent of average 184* 124
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 24.9 21.4 117
DIVIDE PEAK 8800 -M .3 * -M 31.5 *
OLD BATTLE 10000 20.0 8.5 239 52.4 40.9 129
SANDSTONE RS 8150 -M .0 * -M 26.7 *
WHISKEY PARK 8950 .3 .3 150* 41.8 39.0 107
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Basin wide percent of average 237* 118
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 22.7 21.5 106
BLIND BULL SUM 8650 11.9 7.8 152 31.4 30.4 104
EAST RIM DIVIDE 7930 .0 .0 100* 20.9 20.0 105
ELKHART PARK G.S. 9400 .0 .0 100* 23.9 21.2 114
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.2 21.0 111
KENDALL R.S. 7740 .0 .0 100* 22.2 20.5 109
LOOMIS PARK 8240 .0 .0 100* 27.4 24.9 111
NEW FORK LAKE 8340 .0 .0 100* 20.5 19.2 108
SNIDER BASIN 8250 .0 .0 100* 25.4 20.0 127
SPRING CREEK DIVIDE 9000 13.0 .0 * 39.3 34.8 113
TRIPLE PEAK 8500 .0 .0 100* 41.8 40.2 104
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Basin wide percent of average 152* 110
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 20.4 17.7 116
HEWINTA 9500 .0 .0 100* 22.4 20.2 112
HICKERSON PARK 9150 .2 .0 * 17.2 16.4 106
HOLE-IN-ROCK 9150 -M .0 * -M 16.4 *
INDIAN CREEK 9425 15.7 .0 * 37.7 33.4 113
KELLEY R.S. 8180 .0 .0 100* 27.7 24.9 112
STEEL CREEK PARK 10100 9.4 3.3 291 26.7 21.7 124
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Basin wide percent of average 291* 114
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * 31.9 25.7 125
HAYDEN FORK 9400 .0 .0 100* 30.9 27.4 113
KELLEY R.S. 8180 .0 .0 100* 27.7 24.9 112
LILY LAKE 9050 .0 .0 100* 27.7 22.2 125
MONTE CRISTO 8960 3.0 3.4 89 41.3 34.8 119
SALT RIVER SUMMIT 7600 .3 .0 * 25.9 22.4 116
TRIAL LAKE 9960 3.3 3.5 92 34.2 32.8 104
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Basin wide percent of average 90* 116
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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.