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 WEDNESDAY: SEPTEMBER 29 , 2010
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100* 25.4 33.1 77
COTTONWOOD CREEK 7670 .1 .0 * 38.2 42.7 89
GRAND TARGHEE 9260 .0 -M * 49.4 -M *
GRANITE CREEK 6770 .2 .0 * 22.1 30.5 72
GRASSY LAKE 7265 .2 .0 * 48.3 53.7 90
GROS VENTRE SUMMIT 8750 .1 .0 * 19.4 24.9 78
GUNSIGHT PASS 9820 .1 -M * 23.0 -M *
LEWIS LAKE DIVIDE 7850 .0 .0 100* 42.4 53.2 80
PHILLIPS BENCH 8200 .1 .0 * 34.9 43.7 80
SALT RIVER SUMMIT 7760 .2 .0 * 22.5 29.5 76
SNAKE RIVER STATION 6920 .1 .0 * 32.2 35.2 91
SPRING CREEK DIVIDE 9000 .1 .0 * 32.6 39.3 83
THUMB DIVIDE 7980 .0 .0 100* 27.5 30.3 91
TOGWOTEE PASS 9580 .0 .0 100* 38.2 40.6 94
TWO OCEAN PLATEAU 9240 .2 .0 * 35.9 45.0 80
WILLOW CREEK 8380 .2 .0 * 49.6 51.6 96
----- -----
Basin wide percent of average * 85
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 .0 .4 0* 27.3 35.1 78
BLACK BEAR 8170 .0 .2 0* 46.7 59.5 78
CANYON 7870 .0 .1 0* 22.0 27.6 80
FISHER CREEK 9100 .0 .3 0* 50.4 58.1 87
MADISON PLATEAU 7750 .0 .1 0* 36.8 42.0 88
NORTHEAST ENTRANCE 7350 .0 .0 100* 24.0 25.9 93
PARKER PEAK 9400 .0 .5 0* 28.9 30.9 94
SYLVAN LAKE 8420 .0 .3 0* 39.0 37.2 105
THUMB DIVIDE 7980 .0 .0 100* 27.5 30.3 91
TWO OCEAN PLATEAU 9240 .2 .0 * 35.9 45.0 80
WHISKEY CREEK 6800 .0 .0 100* 26.7 35.2 76
WHITE MILL 8700 .0 .2 0* 38.5 45.2 85
WOLVERINE 7650 .0 .0 100* 16.2 25.6 63
----- -----
Basin wide percent of average 10* 84
WIND RIVER
BURROUGHS CREEK 8750 .0 .2 0* 20.9 29.8 70
CASTLE CREEK 8400 .0 -M * 1.5 -M *
COLD SPRINGS 9630 .0 .2 0* 24.4 23.9 102
DEER PARK 9700 .0 .7 0* 35.4 37.9 93
HOBBS PARK 10100 .0 .2 0* 35.9 28.4 126
LITTLE WARM 9370 .0 .1 0* 23.5 27.4 86
SOUTH PASS 9040 .0 .2 0* 32.8 31.9 103
ST. LAWRENCE ALT 8620 .0 .1 0* 24.8 21.4 116
TOGWOTEE PASS 9580 .0 .0 100* 38.2 40.6 94
TOWNSEND CREEK 8700 .0 .1 0* 30.8 25.5 121
----- -----
Basin wide percent of average 0* 100
BIGHORN BASIN
BALD MTN. 9380 .0 .6 0* 27.3 33.8 81
BEAR TRAP MEADOW 8200 .0 .1 0* 21.0 21.3 99
BLACKWATER 9780 .0 .6 0* 39.8 38.4 104
BONE SPRINGS DIV 9350 .0 .4 0* 24.2 32.1 75
EVENING STAR 9200 .0 .4 0* 39.6 44.1 90
GRAVE SPRINGS 8550 .0 .1 0* 23.4 22.8 103
KIRWIN 9550 .0 .4 0* 25.9 27.2 95
MARQUETTE 8760 .0 .4 0* 27.9 27.3 102
MIDDLE POWDER 7760 .0 .2 0* 19.8 26.2 76
OWL CREEK 8975 .0 .2 0* 16.8 18.0 93
POWDER RIVER PASS 9480 .0 .3 0* 26.2 27.4 96
SHELL CREEK 9580 .0 .7 0* 25.8 29.2 88
SYLVAN LAKE 8420 .0 .3 0* 39.0 37.2 105
SYLVAN ROAD 7120 .0 .0 100* 28.0 30.2 93
TIMBER CREEK 7950 .0 .2 0* 23.0 22.0 105
YOUNTS PEAK 8350 .0 .1 0* 23.7 31.2 76
----- -----
Basin wide percent of average 0* 92
SHOSHONE RIVER
BLACKWATER 9780 .0 .6 0* 39.8 38.4 104
EVENING STAR 9200 .0 .4 0* 39.6 44.1 90
KIRWIN 9550 .0 .4 0* 25.9 27.2 95
MARQUETTE 8760 .0 .4 0* 27.9 27.3 102
SYLVAN LAKE 8420 .0 .3 0* 39.0 37.2 105
SYLVAN ROAD 7120 .0 .0 100* 28.0 30.2 93
YOUNTS PEAK 8350 .0 .1 0* 23.7 31.2 76
----- -----
Basin wide percent of average 0* 95
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .0 .1 0* 21.0 21.3 99
BIG GOOSE 7990 .0 .0 100* 24.6 22.9 107
BONE SPRINGS DIV 9350 .0 .4 0* 24.2 32.1 75
BURGESS JUNCTION 7880 .0 .3 0* 24.6 26.5 93
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 28.6 31.1 92
DOME LAKE 8880 .0 .3 0* 27.7 28.9 96
GRAVE SPRINGS 8550 .0 .1 0* 23.4 22.8 103
HANSEN SAWMILL 8360 .0 .1 0* 22.1 22.2 100
LITTLE GOOSE 8870 .0 -M * 1.3 -M *
MIDDLE POWDER 7760 .0 .2 0* 19.8 26.2 76
POWDER RIVER PASS 9480 .0 .3 0* 26.2 27.4 96
SOLDIER PARK 8720 .0 -M * .6 -M *
SUCKER CREEK 8880 .0 .2 0* 29.8 30.0 99
TIE CREEK 6870 .0 .1 0* 26.5 25.0 106
----- -----
Basin wide percent of average 0* 94
BELLE FOURCHE
BLIND PARK 6890 .0 .0 100* 28.9 26.7 108
COLE CANYON 5910 .0 .0 100* 29.1 22.7 128
NORTH RAPID CREEK 6130 .0 .0 100* 27.2 24.9 109
----- -----
Basin wide percent of average * 115
UPPER N. PLATTE RIVER
COLUMBINE 9160 .1 .0 * 37.1 38.0 98
DIVIDE PEAK 8880 .1 .1 100* 39.9 33.3 120
ELK RIVER 8700 .1 .0 * -M 32.3 *
JOE WRIGHT 10120 .4 .0 * 38.2 44.7 85
NORTH FRENCH CREEK 10130 .3 .0 * 50.5 42.4 119
OLD BATTLE 10000 .1 .1 100* 55.5 51.3 108
SAGE CREEK BASIN 7850 .0 .0 100* 28.0 19.3 145
SOUTH BRUSH CREEK 8440 .0 .0 100* 33.1 31.0 107
TOWER 10500 .1 .0 * 54.7 58.2 94
WEBBER SPRINGS 9250 .0 .1 0* 44.6 41.6 107
WILLOW CREEK PASS 9540 .9 .0 * 31.5 26.3 120
----- -----
Basin wide percent of average 700* 107
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .4 .1 400* 36.6 38.4 95
CASPER MTN. 7900 .1 .0 * 26.1 30.1 87
DEADMAN HILL 10220 .0 .2 0* 33.2 31.6 105
DEER PARK 9700 .0 .7 0* 35.4 37.9 93
LAPRELE CREEK 8375 .0 .0 100* 25.2 27.5 92
RENO HILL 8400 .1 .0 * -M 31.2 *
ROACH 9700 .0 .0 100* 34.9 33.5 104
SAND LAKE 10050 .0 .3 0* 48.1 41.7 115
SOUTH PASS 9040 .0 .2 0* 32.8 31.9 103
WINDY PEAK 7900 .1 .0 * 29.0 23.8 122
----- -----
Basin wide percent of average 47* 102
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 26.2 25.3 104
DIVIDE PEAK 8880 .1 .1 100* 39.9 33.3 120
OLD BATTLE 10000 .1 .1 100* 55.5 51.3 108
SANDSTONE RS 8150 .7 .0 * 29.4 30.7 96
WHISKEY PARK 8950 .3 .0 * 46.5 44.8 104
----- -----
Basin wide percent of average 600* 107
UPPER GREEN RIVER
BIG SANDY OPENING 9080 .3 .0 * 20.3 24.7 82
BLIND BULL SUM 8650 .0 .0 100* 24.7 34.3 72
EAST RIM DIVIDE 7930 .0 .0 100* 14.0 21.2 66
ELKHART PARK G.S. 9400 .2 .0 * 19.4 26.2 74
GROS VENTRE SUMMIT 8750 .1 .0 * 19.4 24.9 78
GUNSIGHT PASS 9820 .1 -M * 23.0 -M *
KENDALL R.S. 7740 .0 .0 100* 15.7 24.0 65
LOOMIS PARK 8240 .0 .0 100* 19.5 28.9 67
NEW FORK LAKE 8340 .1 .0 * 15.4 22.0 70
POCKET CREEK 9360 .1 -M * 22.4 -M *
SNIDER BASIN 8060 .1 .0 * 20.7 24.8 83
SPRING CREEK DIVIDE 9000 .1 .0 * 32.6 39.3 83
TRIPLE PEAK 8500 .1 .0 * 36.9 38.4 96
----- -----
Basin wide percent of average * 77
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 20.4 21.7 94
HEWINTA 9519 .0 .0 100* 24.8 27.7 90
HICKERSON PARK 9145 .0 .0 100* 25.8 19.4 133
HOLE-IN-ROCK 9150 .0 .0 100* 23.0 19.3 119
INDIAN CREEK 9425 .1 .0 * 30.5 38.1 80
KELLEY R.S. 8180 .5 .0 * 23.4 31.3 75
STEEL CREEK PARK 10200 .0 .2 0* 29.4 30.8 95
----- -----
Basin wide percent of average 300* 94
UPPER BEAR RIVER
BUG LAKE 7950 .1 .2 50* 26.7 30.3 88
HAYDEN FORK 9212 .1 .1 100* 33.2 35.6 93
KELLEY R.S. 8180 .5 .0 * 23.4 31.3 75
LILY LAKE 9156 .0 .1 0* 28.3 30.6 92
MONTE CRISTO 8960 .0 .1 0* 33.3 40.1 83
SALT RIVER SUMMIT 7760 .2 .0 * 22.5 29.5 76
TRIAL LAKE 9992 .0 .3 0* 33.4 41.7 80
----- -----
Basin wide percent of average 113* 84
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.