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 8 , 1999
-----------------------------------------------------------------------------
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* 37.3 32.8 114
COTTONWOOD CREEK 7600 .2 .0 * 44.9 36.4 124
GRANITE CREEK 6770 .2 .0 * 34.5 36.5 95
GRASSY LAKE 7265 .0 .0 100* 60.5 54.0 112
GROS VENTRE SUMMIT 8775 .0 .0 100* 26.2 24.8 106
LEWIS LAKE DIVIDE 7860 .0 .0 100* 55.0 55.0 100
PHILLIPS BENCH 8200 .2 .0 * 45.3 43.4 105
SALT RIVER SUMMIT 7600 .2 .0 * 31.0 26.3 118
SNAKE RIVER STATION 6920 .0 .0 100* 39.9 38.0 106
SPRING CREEK DIVIDE 9000 .3 .0 * 43.4 39.0 112
THUMB DIVIDE 7980 .0 .0 100* 35.5 30.7 116
TOGWOTEE PASS 9580 .0 .0 100* 41.8 41.3 102
TWO OCEAN PLATEAU 9360 .2 .0 * 47.3 45.2 105
WILLOW CREEK 8450 .0 .0 100* 58.8 46.5 127
----- -----
Basin wide percent of average * 110
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 36.9 31.8 117
BLACK BEAR 7950 .0 .0 100* 71.4 59.5 120
CANYON 7940 .0 .0 100* 30.4 26.0 117
FISHER CREEK 9100 .0 .0 100* 55.7 56.9 98
MADISON PLATEAU 7750 .0 .0 100* 47.0 40.9 115
NORTHEAST ENTRANCE 7350 .0 .0 100* 25.8 23.7 109
PARKER PEAK 9400 .0 .0 100* 34.5 30.0 116
SYLVAN LAKE 8420 .0 .0 100* 44.2 35.3 126
THUMB DIVIDE 7980 .0 .0 100* 35.5 30.7 116
TWO OCEAN PLATEAU 9360 .2 .0 * 47.3 45.2 105
WHISKEY CREEK 6800 .3 .0 * 38.8 35.0 111
WHITE MILL 8700 .0 .0 100* 39.0 45.2 87
WOLVERINE 7650 .0 .0 100* 22.7 25.2 91
----- -----
Basin wide percent of average * 110
WIND RIVER
BURROUGHS CREEK 8750 .4 .0 * 31.5 28.2 112
COLD SPRINGS 9630 .0 .0 100* 29.9 21.5 139
DEER PARK 9700 .5 -M * 42.3 -M *
HOBBS PARK 10100 .0 .0 100* 34.8 27.0 129
LITTLE WARM 9620 .0 .0 100* 31.8 25.5 125
SOUTH PASS 9040 -M .0 * -M 29.8 *
ST. LAWRENCE ALT 8620 .3 .0 * 25.7 19.8 130
TOGWOTEE PASS 9580 .0 .0 100* 41.8 41.3 102
TOWNSEND CREEK 8700 .3 .0 * 31.4 24.0 131
----- -----
Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 32.2 31.5 103
BEAR TRAP MEADOW 7900 -M .0 * -M 19.5 *
BLACKWATER 9780 .0 .0 100* 39.9 35.0 115
BONE SPRINGS DIV 9350 -M .0 * 32.8 30.2 109
EVENING STAR 9200 .0 .0 100* 51.2 42.3 122
GRAVE SPRINGS 8550 .2 .0 * 24.2 22.8 107
KIRWIN 9550 .0 .0 100* 29.5 24.4 121
MARQUETTE 8760 .0 .0 100* 31.0 24.5 127
MIDDLE POWDER 7760 .3 .0 * 32.0 24.5 131
OWL CREEK 8975 .0 .0 100* 23.0 16.0 144
POWDER RIVER PASS 9480 .0 .0 100* 30.0 24.3 124
SHELL CREEK 9580 .0 .0 100* 29.9 26.9 112
SYLVAN LAKE 8420 .0 .0 100* 44.2 35.3 126
SYLVAN ROAD 8120 .0 .0 100* 30.4 30.5 100
TIMBER CREEK 7950 .3 .0 * 25.3 19.8 128
YOUNTS PEAK 8350 .0 .0 100* 32.9 29.5 112
----- -----
Basin wide percent of average * 118
SHOSHONE RIVER
BLACKWATER 9780 .0 .0 100* 39.9 35.0 115
EVENING STAR 9200 .0 .0 100* 51.2 42.3 122
KIRWIN 9550 .0 .0 100* 29.5 24.4 121
MARQUETTE 8760 .0 .0 100* 31.0 24.5 127
SYLVAN LAKE 8420 .0 .0 100* 44.2 35.3 126
SYLVAN ROAD 8120 .0 .0 100* 30.4 30.5 100
YOUNTS PEAK 8350 .0 .0 100* 32.9 29.5 112
----- -----
Basin wide percent of average * 117
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M .0 * -M 19.5 *
BIG GOOSE 7990 .0 -M * 24.8 -M *
BONE SPRINGS DIV 9350 -M .0 * 32.8 30.2 109
BURGESS JUNCTION 7880 .2 .0 * 24.2 23.8 102
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 32.5 28.5 115
DOME LAKE 8880 .0 .0 100* 24.0 26.4 92
GRAVE SPRINGS 8550 .2 .0 * 24.2 22.8 107
HANSEN SAWMILL 8760 .5 .0 * 23.0 19.5 119
MIDDLE POWDER 7760 .3 .0 * 32.0 24.5 131
POWDER RIVER PASS 9480 .0 .0 100* 30.0 24.3 124
SUCKER CREEK 8880 .0 .0 100* 30.8 27.5 113
TIE CREEK 6870 .4 -M * 27.5 22.8 122
----- -----
Basin wide percent of average * 113
BELLE FOURCHE
BLIND PARK 6890 .4 .0 * 32.5 27.2 120
NORTH RAPID CREEK 6130 .3 -M * 29.9 -M *
WARREN PEAK 6520 .2 .0 * 31.0 20.9 149
----- -----
Basin wide percent of average * 133
UPPER N. PLATTE RIVER
COLUMBINE 9400 .2 .0 * 36.0 36.3 100
DIVIDE PEAK 8800 .0 .0 100* 40.8 35.9 114
ELK RIVER 8700 .0 .0 100* 38.0 29.8 128
JOE WRIGHT 10120 .2 .0 * 43.2 43.8 99
NORTH FRENCH CREEK 10100 .2 .0 * 45.2 38.7 117
OLD BATTLE 10000 .0 .0 100* 58.0 46.2 126
SOUTH BRUSH CREEK 8400 .0 .0 100* 33.3 29.7 113
TOWER 10500 -M .0 * 58.5 56.8 103
WEBBER SPRINGS 9200 .0 .0 100* 43.3 39.5 110
WILLOW CREEK PASS 9540 .0 .0 100* 25.2 24.9 102
----- -----
Basin wide percent of average * 111
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .3 .0 * 41.4 32.9 126
CASPER MTN. 7900 .2 .0 * 30.7 28.8 107
DEADMAN HILL 10220 .0 .0 100* 31.0 31.4 100
DEER PARK 9700 .5 -M * 42.3 -M *
LAPRELE CREEK 8320 .2 .0 * 28.8 24.2 120
RENO HILL 8400 .0 .0 100* 32.5 29.9 109
ROACH 9700 .2 .0 * 33.5 36.4 93
SAND LAKE 10080 .0 .0 100* 48.0 34.0 142
SOUTH PASS 9040 -M .0 * -M 29.8 *
WINDY PEAK 7840 .0 .0 100* 26.4 21.2 125
----- -----
Basin wide percent of average * 115
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 .0 100* 27.2 24.8 110
DIVIDE PEAK 8800 .0 .0 100* 40.8 35.9 114
OLD BATTLE 10000 .0 .0 100* 58.0 46.2 126
SANDSTONE RS 8150 .0 .0 100* 32.8 31.5 104
WHISKEY PARK 8950 .0 .0 100* 45.3 43.5 105
----- -----
Basin wide percent of average * 113
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 26.4 25.3 105
BLIND BULL SUM 8650 .3 .0 * 36.0 34.0 106
EAST RIM DIVIDE 7930 .4 .0 * 23.5 23.7 100
ELKHART PARK G.S. 9400 .4 .0 * 28.0 24.9 113
GROS VENTRE SUMMIT 8775 .0 .0 100* 26.2 24.8 106
KENDALL R.S. 7740 .0 .0 100* 26.9 24.2 112
LOOMIS PARK 8240 .0 .0 100* 30.9 29.3 106
NEW FORK LAKE 8340 .0 .0 100* 23.8 22.5 106
SNIDER BASIN 8250 .0 .0 100* 28.8 23.7 122
SPRING CREEK DIVIDE 9000 .3 .0 * 43.4 39.0 112
TRIPLE PEAK 8500 .0 .0 100* 45.7 45.5 101
----- -----
Basin wide percent of average * 108
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 24.3 20.9 117
HEWINTA 9500 .0 .0 100* 27.2 24.8 110
HICKERSON PARK 9150 .5 .0 * 22.7 21.0 109
HOLE-IN-ROCK 9150 .0 .0 100* 23.2 21.0 111
INDIAN CREEK 9425 .5 .0 * 41.4 37.8 110
KELLEY R.S. 8180 .0 .0 100* 31.0 29.2 107
STEEL CREEK PARK 10100 .0 .0 100* 32.5 29.0 113
----- -----
Basin wide percent of average * 111
UPPER BEAR RIVER
BUG LAKE 7950 .2 .0 * 34.2 28.7 120
HAYDEN FORK 9400 .3 .0 * 36.4 32.2 114
KELLEY R.S. 8180 .0 .0 100* 31.0 29.2 107
LILY LAKE 9050 .7 .0 * 32.4 26.7 122
MONTE CRISTO 8960 .0 .0 100* 44.0 38.9 114
SALT RIVER SUMMIT 7600 .2 .0 * 31.0 26.3 118
TRIAL LAKE 9960 .0 .0 100* 39.5 38.2 104
----- -----
Basin wide percent of average * 113
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.