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: DECEMBER 2 , 1998
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 4.7 4.0 118 6.3 6.7 94
COTTONWOOD CREEK 7600 3.8 4.4 86 7.1 7.1 100
GRANITE CREEK 6770 -M 3.5 * -M 7.0 *
GRASSY LAKE 7265 7.8 7.1 110 9.6 10.7 90
GROS VENTRE SUMMIT 8775 4.6 3.7 124 5.1 4.8 106
LEWIS LAKE DIVIDE 7860 -M 7.0 * -M 10.9 *
PHILLIPS BENCH 8200 6.8 5.8 117 7.4 8.4 88
SALT RIVER SUMMIT 7600 1.8 2.3 78 4.3 5.0 86
SNAKE RIVER STATION 6920 4.4 3.9 113 6.5 7.5 87
SPRING CREEK DIVIDE 9000 -M 6.1 * -M 7.7 *
THUMB DIVIDE 7980 7.2 3.7 195 7.6 6.1 125
TOGWOTEE PASS 9580 -M 6.2 * -M 8.1 *
TWO OCEAN PLATEAU 9360 -M 8.0 * -M 9.1 *
WILLOW CREEK 8450 6.0 6.3 95 10.8 9.2 117
----- -----
Basin wide percent of average 114 99
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 -M 7.1 * -M 5.2 *
BLACK BEAR 7950 13.1 8.5 154 13.3 10.1 132
CANYON 7940 -M 2.8 * -M 4.4 *
FISHER CREEK 9100 11.0 9.0 122 10.1 9.4 107
MADISON PLATEAU 7750 -M 5.5 * 10.0 7.1 141
NORTHEAST ENTRANCE 7350 1.9 2.0 95 3.6 3.8 95
PARKER PEAK 9400 6.3 7.1 89 -M 5.1 *
SYLVAN LAKE 8420 -M 6.9 * -M 6.6 *
THUMB DIVIDE 7980 7.2 3.7 195 7.6 6.1 125
TWO OCEAN PLATEAU 9360 -M 8.0 * -M 9.1 *
WHISKEY CREEK 6800 -M 3.9 * -M 5.7 *
WHITE MILL 8700 6.6 6.3 105 6.6 7.7 86
WOLVERINE 7650 -M 2.4 * -M 4.2 *
----- -----
Basin wide percent of average 126* 116*
WIND RIVER
BURROUGHS CREEK 8750 -M 3.8 * -M 5.2 *
COLD SPRINGS 9630 -M 2.8 * -M 4.0 *
DEER PARK 9700 -M -M * -M -M *
HOBBS PARK 10100 -M 5.1 * -M 4.5 *
LITTLE WARM 9620 -M 3.3 * -M 4.6 *
SOUTH PASS 9040 -M 5.4 * -M 5.4 *
ST. LAWRENCE ALT 8620 -M 2.0 * -M 3.8 *
TOGWOTEE PASS 9580 -M 6.2 * -M 8.1 *
TOWNSEND CREEK 8700 -M 2.8 * -M 4.0 *
----- -----
Basin wide percent of average * *
BIGHORN BASIN
BALD MTN. 9375 -M 6.1 * -M 5.2 *
BEAR TRAP MEADOW 7900 -M 2.2 * -M 3.1 *
BLACKWATER 9780 10.5 5.9 178 9.1 5.7 160
BONE SPRINGS DIV 9350 -M 5.1 * -M 4.5 *
EVENING STAR 9200 -M 8.7 * -M 6.9 *
GRAVE SPRINGS 8550 -M 2.9 * -M 3.6 *
KIRWIN 9550 4.6 3.4 135 5.2 3.7 141
MARQUETTE 8760 -M 2.5 * -M 3.5 *
MIDDLE POWDER 7760 -M 3.7 * -M 4.2 *
OWL CREEK 8975 -M 1.1 * -M 2.0 *
POWDER RIVER PASS 9480 -M 3.3 * -M 3.9 *
SHELL CREEK 9580 -M 4.9 * -M 4.2 *
SYLVAN LAKE 8420 -M 6.9 * -M 6.6 *
SYLVAN ROAD 8120 -M 3.6 * -M 5.3 *
TIMBER CREEK 7950 -M 1.2 * -M 2.5 *
YOUNTS PEAK 8350 -M 5.5 * -M 5.1 *
----- -----
Basin wide percent of average 162* 152*
SHOSHONE RIVER
BLACKWATER 9780 10.5 5.9 178 9.1 5.7 160
EVENING STAR 9200 -M 8.7 * -M 6.9 *
KIRWIN 9550 4.6 3.4 135 5.2 3.7 141
MARQUETTE 8760 -M 2.5 * -M 3.5 *
SYLVAN LAKE 8420 -M 6.9 * -M 6.6 *
SYLVAN ROAD 8120 -M 3.6 * -M 5.3 *
YOUNTS PEAK 8350 -M 5.5 * -M 5.1 *
----- -----
Basin wide percent of average 162* 152*
POWDER-TONGUE
BEAR TRAP MEADOW 7900 -M 2.2 * -M 3.1 *
BIG GOOSE 7990 -M -M * -M -M *
BONE SPRINGS DIV 9350 -M 5.1 * -M 4.5 *
BURGESS JUNCTION 7880 -M 3.7 * -M 3.9 *
CLOUD PEAK RESERVOIR 9860 -M 3.5 * -M 4.4 *
DOME LAKE 8880 -M 4.1 * -M 4.8 *
GRAVE SPRINGS 8550 -M 2.9 * -M 3.6 *
HANSEN SAWMILL 8760 -M 2.1 * -M 3.0 *
MIDDLE POWDER 7760 -M 3.7 * -M 4.2 *
POWDER RIVER PASS 9480 -M 3.3 * -M 3.9 *
SUCKER CREEK 8880 -M 3.0 * -M 4.3 *
TIE CREEK 6870 .7 -M * 3.4 3.7 92
----- -----
Basin wide percent of average * 92*
BELLE FOURCHE
BLIND PARK 6890 -M 3.5 * -M 3.3 *
NORTH RAPID CREEK 6130 -M -M * -M -M *
WARREN PEAK 6520 -M 3.5 * -M 2.7 *
----- -----
Basin wide percent of average * *
UPPER N. PLATTE RIVER
COLUMBINE 9400 3.3 5.2 63 6.2 6.3 98
DIVIDE PEAK 8800 5.0 5.8 86 11.0 6.9 159
ELK RIVER 8700 1.9 3.8 50 8.3 5.2 160
JOE WRIGHT 10120 4.2 6.7 63 9.1 7.9 115
NORTH FRENCH CREEK 10100 8.6 6.9 125 11.0 6.3 175
OLD BATTLE 10000 8.1 9.0 90 12.0 9.0 133
SOUTH BRUSH CREEK 8400 3.3 2.6 127 8.7 5.4 161
TOWER 10500 11.6 14.0 83 11.6 10.1 115
WEBBER SPRINGS 9200 4.4 7.2 61 8.7 8.7 100
WILLOW CREEK PASS 9540 3.8 3.4 112 5.3 4.0 132
----- -----
Basin wide percent of average 84 132
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M 7.2 * -M 5.4 *
CASPER MTN. 7900 2.9 4.8 60 8.6 5.3 162
DEADMAN HILL 10220 5.2 4.6 113 6.2 5.2 119
DEER PARK 9700 -M -M * -M -M *
LAPRELE CREEK 8320 .4 2.9 14 6.1 3.4 179
RENO HILL 8400 4.5 4.0 112 8.7 6.7 130
ROACH 9700 3.3 4.6 72 5.8 6.3 92
SAND LAKE 10080 9.7 9.1 107 10.9 6.1 179
SOUTH PASS 9040 -M 5.4 * -M 5.4 *
WINDY PEAK 7840 .6 2.1 29 6.2 2.7 230
----- -----
Basin wide percent of average 83 147
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.3 2.6 88 6.8 4.7 145
DIVIDE PEAK 8800 5.0 5.8 86 11.0 6.9 159
OLD BATTLE 10000 8.1 9.0 90 12.0 9.0 133
SANDSTONE RS 8150 1.8 3.2 56 7.9 5.3 149
WHISKEY PARK 8950 4.6 7.2 64 9.8 6.4 153
----- -----
Basin wide percent of average 78 147
UPPER GREEN RIVER
BIG SANDY OPENING 9100 -M 3.2 * -M 4.8 *
BLIND BULL SUM 8650 -M 7.6 * -M 6.4 *
EAST RIM DIVIDE 7930 2.3 1.6 144 3.4 4.5 76
ELKHART PARK G.S. 9400 -M 3.2 * -M 4.8 *
GROS VENTRE SUMMIT 8775 4.6 3.7 124 5.1 4.8 106
KENDALL R.S. 7740 3.0 2.6 115 3.8 4.6 83
LOOMIS PARK 8240 -M 3.4 * -M 5.6 *
NEW FORK LAKE 8340 2.2 2.2 100 3.0 4.3 70
SNIDER BASIN 8250 2.4 2.9 83 3.3 4.5 73
SPRING CREEK DIVIDE 9000 -M 6.1 * -M 7.7 *
TRIPLE PEAK 8500 -M 5.6 * -M 9.2 *
----- -----
Basin wide percent of average 112* 82*
LOWER GREEN RIVER
HAMS FORK 7840 -M 1.8 * -M 4.0 *
HEWINTA 9500 1.5 2.4 63 4.3 4.5 96
HICKERSON PARK 9150 1.3 1.6 81 4.1 3.6 114
HOLE-IN-ROCK 9150 .9 1.4 64 4.4 3.6 122
INDIAN CREEK 9425 -M 6.3 * -M 7.5 *
KELLEY R.S. 8180 -M 3.4 * -M 5.6 *
STEEL CREEK PARK 10100 3.7 5.1 73 5.5 4.7 117
----- -----
Basin wide percent of average 70 112
UPPER BEAR RIVER
BUG LAKE 7950 -M 5.1 * -M 6.6 *
HAYDEN FORK 9400 2.6 3.8 68 5.7 5.6 102
KELLEY R.S. 8180 -M 3.4 * -M 5.6 *
LILY LAKE 9050 -M 3.7 * -M 5.1 *
MONTE CRISTO 8960 -M 6.4 * -M 8.0 *
SALT RIVER SUMMIT 7600 1.8 2.3 78 4.3 5.0 86
TRIAL LAKE 9960 3.6 6.1 59 5.3 7.3 73
----- -----
Basin wide percent of average 66* 85*
-----------------------------------------------------------------------------
-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.
