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: SEPTEMBER 23 , 2006
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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* 35.0 32.8 107
COTTONWOOD CREEK 7600 .5 .0 * 42.7 42.3 101
GRANITE CREEK 6770 .0 .0 100* 31.3 30.2 104
GRASSY LAKE 7265 .3 .0 * 55.5 53.2 104
GROS VENTRE SUMMIT 8750 .1 .0 * 19.8 24.5 81
LEWIS LAKE DIVIDE 7850 -M .0 * 52.1 52.8 99
PHILLIPS BENCH 8200 .6 .0 * 45.9 43.3 106
SALT RIVER SUMMIT 7600 .0 .0 100* 27.2 29.2 93
SNAKE RIVER STATION 6920 .1 .0 * 35.3 34.8 101
SPRING CREEK DIVIDE 9000 .6 .0 * 40.3 38.9 104
THUMB DIVIDE 7980 .0 .0 100* 26.8 30.1 89
TOGWOTEE PASS 9580 .7 .0 * 34.6 40.1 86
TWO OCEAN PLATEAU 9240 .1 .0 * 41.7 44.5 94
WILLOW CREEK 8450 .9 .0 * 56.8 51.1 111
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Basin wide percent of average * 99
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .8 .2 400* 28.8 34.7 83
BLACK BEAR 8170 1.3 .2 650* 66.6 59.1 113
CANYON 8090 .5 .0 * 27.9 27.2 103
FISHER CREEK 9100 .7 .2 350* 52.6 57.6 91
MADISON PLATEAU 7750 .0 .1 0* 45.3 41.6 109
NORTHEAST ENTRANCE 7350 .0 .0 100* 21.3 25.5 84
PARKER PEAK 9400 .5 .3 167* 28.5 30.5 93
SYLVAN LAKE 8420 .5 .2 250* 34.6 36.8 94
THUMB DIVIDE 7980 .0 .0 100* 26.8 30.1 89
TWO OCEAN PLATEAU 9240 .1 .0 * 41.7 44.5 94
WHISKEY CREEK 6800 .1 .0 * 34.1 34.6 99
WHITE MILL 8700 .5 .1 500* 35.9 44.8 80
WOLVERINE 7650 .0 .0 100* 18.2 25.2 72
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Basin wide percent of average 331* 94
WIND RIVER
BURROUGHS CREEK 8750 .2 .1 200* 21.7 29.3 74
COLD SPRINGS 9630 .9 .1 900* 13.1 23.5 56
DEER PARK 9700 -M .2 * 29.4 37.5 78
HOBBS PARK 10100 2.0 .2 1000* 19.7 28.0 70
LITTLE WARM 9370 .2 .2 100* 18.2 26.9 68
SOUTH PASS 9040 .7 .0 * 25.0 31.6 79
ST. LAWRENCE ALT 8620 .8 .0 * 11.0 21.1 52
TOGWOTEE PASS 9580 .7 .0 * 34.6 40.1 86
TOWNSEND CREEK 8700 1.3 .0 * 17.2 25.0 69
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Basin wide percent of average 550* 72
BIGHORN BASIN
BALD MTN. 9380 2.7 .4 675* 23.4 33.4 70
BEAR TRAP MEADOW 8200 .4 .1 400* 15.0 20.9 72
BLACKWATER 9780 .7 .4 175* 29.9 38.0 79
BONE SPRINGS DIV 9350 -M .3 * -M 31.6 *
EVENING STAR 9200 .9 .3 300* 40.9 43.7 94
GRAVE SPRINGS 8550 -M .1 * 19.9 22.5 88
KIRWIN 9550 -M .2 * 19.5 26.6 73
MARQUETTE 8760 .8 .3 267* 13.9 26.7 52
MIDDLE POWDER 7760 -M .2 * 19.6 25.8 76
OWL CREEK 8975 .5 .2 250* 10.8 17.6 61
POWDER RIVER PASS 9480 .6 .2 300* 21.4 26.9 80
SHELL CREEK 9580 -M .4 * 24.5 28.8 85
SYLVAN LAKE 8420 .5 .2 250* 34.6 36.8 94
SYLVAN ROAD 7120 .2 .0 * 25.3 29.8 85
TIMBER CREEK 7950 .0 .0 100* 12.1 21.5 56
YOUNTS PEAK 8350 .0 .0 100* 25.0 30.7 81
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Basin wide percent of average 338* 78
SHOSHONE RIVER
BLACKWATER 9780 .7 .4 175* 29.9 38.0 79
EVENING STAR 9200 .9 .3 300* 40.9 43.7 94
KIRWIN 9550 -M .2 * 19.5 26.6 73
MARQUETTE 8760 .8 .3 267* 13.9 26.7 52
SYLVAN LAKE 8420 .5 .2 250* 34.6 36.8 94
SYLVAN ROAD 7120 .2 .0 * 25.3 29.8 85
YOUNTS PEAK 8350 .0 .0 100* 25.0 30.7 81
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Basin wide percent of average 242* 81
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .4 .1 400* 15.0 20.9 72
BIG GOOSE 7990 1.8 .0 * -M 22.5 *
BONE SPRINGS DIV 9350 -M .3 * -M 31.6 *
BURGESS JUNCTION 7880 -M .2 * -M 26.1 *
CLOUD PEAK RESERVOIR 9860 2.1 .1 2100* 24.7 30.6 81
DOME LAKE 8880 -M .2 * 24.2 28.5 85
GRAVE SPRINGS 8550 -M .1 * 19.9 22.5 88
HANSEN SAWMILL 8360 .6 .2 300* 15.7 21.8 72
MIDDLE POWDER 7760 -M .2 * 19.6 25.8 76
POWDER RIVER PASS 9480 .6 .2 300* 21.4 26.9 80
SUCKER CREEK 8880 -M .2 * -M 29.6 *
TIE CREEK 6870 -M .0 * -M 24.6 *
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Basin wide percent of average 617* 79
BELLE FOURCHE
BLIND PARK 6890 .8 .0 * 30.5 26.4 116
COLE CANYON 5910 .0 .0 100* 23.4 -M *
NORTH RAPID CREEK 6130 .0 .0 100* -M 24.8 *
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Basin wide percent of average * 116*
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 * 49.5 37.7 131
DIVIDE PEAK 8860 .2 .0 * 34.5 32.9 105
ELK RIVER 8700 .3 .0 * 32.8 31.9 103
JOE WRIGHT 10120 1.3 .0 * 44.7 44.3 101
NORTH FRENCH CREEK 10130 1.7 .0 * 47.1 42.0 112
OLD BATTLE 9920 2.4 .1 2400* 58.0 50.9 114
SAGE CREEK BASIN 7850 .3 .0 * 2.0 19.1 10
SOUTH BRUSH CREEK 8440 .5 .0 * 25.3 30.5 83
TOWER 10500 2.8 .0 * 70.0 57.8 121
WEBBER SPRINGS 9250 .5 .0 * 47.0 41.1 114
WILLOW CREEK PASS 9540 .3 .0 * 21.9 26.0 84
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Basin wide percent of average 2400* 104
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 .7 .1 700* 32.0 38.0 84
CASPER MTN. 7850 1.3 .0 * 26.9 29.8 90
DEADMAN HILL 10220 .9 .1 900* 28.6 31.2 92
DEER PARK 9700 -M .2 * 29.4 37.5 78
LAPRELE CREEK 8375 .3 .0 * 19.6 27.2 72
RENO HILL 8500 1.5 .0 * 28.4 30.9 92
ROACH 9700 1.2 .0 * 31.0 33.1 94
SAND LAKE 10050 1.7 .2 850* 43.1 41.3 104
SOUTH PASS 9040 .7 .0 * 25.0 31.6 79
WINDY PEAK 7900 .0 .0 100* -M 23.5 *
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Basin wide percent of average 825* 88
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * -M 25.1 *
DIVIDE PEAK 8860 .2 .0 * 34.5 32.9 105
OLD BATTLE 9920 2.4 .1 2400* 58.0 50.9 114
SANDSTONE RS 8150 -M .0 * -M 30.4 *
WHISKEY PARK 8950 -M .0 * -M 44.4 *
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Basin wide percent of average 2400* 110*
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .1 .0 * 20.6 24.3 85
BLIND BULL SUM 8900 .7 .0 * 29.1 33.9 86
EAST RIM DIVIDE 7930 .3 .0 * 16.4 20.9 78
ELKHART PARK G.S. 9400 .4 .0 * 21.4 25.8 83
GROS VENTRE SUMMIT 8750 .1 .0 * 19.8 24.5 81
KENDALL R.S. 7740 .0 .0 100* 21.0 23.7 89
LOOMIS PARK 8240 .0 .0 100* 26.1 28.6 91
NEW FORK LAKE 8340 .0 .0 100* 16.3 21.6 75
SNIDER BASIN 8060 .1 .0 * 22.1 24.6 90
SPRING CREEK DIVIDE 9000 .6 .0 * 40.3 38.9 104
TRIPLE PEAK 8500 .0 .0 100* 39.4 38.0 104
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Basin wide percent of average * 89
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 21.5 21.5 100
HEWINTA 9500 .4 .0 * 25.9 27.3 95
HICKERSON PARK 9100 .2 .0 * 18.9 19.0 99
HOLE-IN-ROCK 9150 .3 .0 * 19.0 18.9 101
INDIAN CREEK 9425 .7 .0 * 39.7 37.7 105
KELLEY R.S. 8180 .1 .0 * 29.8 31.0 96
STEEL CREEK PARK 10100 1.6 .2 800* 27.6 30.4 91
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Basin wide percent of average 800* 98
UPPER BEAR RIVER
BUG LAKE 7950 .8 .1 800* 33.7 29.9 113
HAYDEN FORK 9100 .5 .0 * 39.9 35.1 114
KELLEY R.S. 8180 .1 .0 * 29.8 31.0 96
LILY LAKE 9050 .4 .0 * 28.2 30.2 93
MONTE CRISTO 8960 1.4 .1 1400* 48.8 39.7 123
SALT RIVER SUMMIT 7600 .0 .0 100* 27.2 29.2 93
TRIAL LAKE 9960 .6 .2 300* 41.5 41.2 101
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Basin wide percent of average 700* 105
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
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 1971-2000.
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.