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 FRIDAY: DECEMBER 26 , 2008
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 4.9 7.4 66 7.6 9.6 79
COTTONWOOD CREEK 7670 9.5 8.7 109 12.7 12.4 102
GRAND TARGHEE 9260 16.8 -M * 15.3 -M *
GRANITE CREEK 6770 -M 6.8 * -M 8.7 *
GRASSY LAKE 7265 10.6 13.3 80 14.4 15.7 92
GROS VENTRE SUMMIT 8750 6.0 6.3 95 7.0 6.0 117
GUNSIGHT PASS 9820 5.2 -M * 6.5 -M *
LEWIS LAKE DIVIDE 7850 10.0 13.3 75 14.2 16.0 89
PHILLIPS BENCH 8200 10.2 11.5 89 12.7 12.3 103
SALT RIVER SUMMIT 7760 4.3 4.8 90 6.2 8.1 77
SNAKE RIVER STATION 6920 4.7 7.1 66 8.5 10.2 83
SPRING CREEK DIVIDE 9000 8.6 11.5 75 10.1 11.8 86
THUMB DIVIDE 7980 6.6 6.9 96 9.1 8.4 108
TOGWOTEE PASS 9580 10.8 10.7 101 12.2 11.1 110
TWO OCEAN PLATEAU 9240 12.5 12.5 100 9.8 12.5 78
WILLOW CREEK 8380 11.5 13.0 88 16.0 14.3 112
----- -----
Basin wide percent of average 87 95
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 7.2 10.5 69 6.7 9.2 73
BLACK BEAR 8170 13.4 15.7 85 15.9 16.2 98
CANYON 7870 4.6 5.4 85 5.5 7.2 76
FISHER CREEK 9100 12.6 15.0 84 12.5 15.7 80
MADISON PLATEAU 7750 8.1 10.2 79 10.3 11.5 90
NORTHEAST ENTRANCE 7350 2.4 4.5 53 5.6 6.0 93
PARKER PEAK 9400 9.4 9.7 97 7.3 7.7 95
SYLVAN LAKE 8420 7.0 9.6 73 9.1 10.3 88
THUMB DIVIDE 7980 6.6 6.9 96 9.1 8.4 108
TWO OCEAN PLATEAU 9240 12.5 12.5 100 9.8 12.5 78
WHISKEY CREEK 6800 5.7 6.7 85 8.6 9.1 95
WHITE MILL 8700 8.4 10.3 82 9.0 11.9 76
WOLVERINE 7650 3.4 5.2 65 4.4 6.6 67
----- -----
Basin wide percent of average 83 86
WIND RIVER
BURROUGHS CREEK 8750 6.1 6.2 98 6.6 7.4 89
COLD SPRINGS 9630 3.3 4.4 75 4.9 5.4 91
DEER PARK 9700 6.3 6.1 103 8.5 10.2 83
HOBBS PARK 10100 5.8 7.2 81 5.8 6.1 95
LITTLE WARM 9370 4.6 5.0 92 6.1 6.3 97
SOUTH PASS 9040 5.9 7.6 78 8.0 8.6 93
ST. LAWRENCE ALT 8620 1.6 3.6 44 4.0 4.4 91
TOGWOTEE PASS 9580 10.8 10.7 101 12.2 11.1 110
TOWNSEND CREEK 8700 3.4 4.1 83 5.4 5.8 93
----- -----
Basin wide percent of average 87 94
BIGHORN BASIN
BALD MTN. 9380 9.7 9.1 107 8.6 7.8 110
BEAR TRAP MEADOW 8200 3.2 2.4 133 4.7 4.3 109
BLACKWATER 9780 8.4 11.1 76 8.1 10.2 79
BONE SPRINGS DIV 9350 8.8 7.4 119 7.4 6.8 109
EVENING STAR 9200 8.7 12.6 69 10.8 12.0 90
GRAVE SPRINGS 8550 2.6 3.7 70 4.1 4.6 89
KIRWIN 9550 4.8 5.5 87 5.2 5.6 93
MARQUETTE 8760 2.0 4.8 42 4.4 5.1 86
MIDDLE POWDER 7760 3.2 5.3 60 4.5 6.5 69
OWL CREEK 8975 2.9 2.5 116 3.1 2.8 111
POWDER RIVER PASS 9480 5.9 4.9 120 6.8 5.6 121
SHELL CREEK 9580 8.3 6.9 120 8.1 6.3 129
SYLVAN LAKE 8420 7.0 9.6 73 9.1 10.3 88
SYLVAN ROAD 7120 4.5 5.6 80 7.0 9.6 73
TIMBER CREEK 7950 2.0 2.9 69 4.5 3.6 125
YOUNTS PEAK 8350 6.4 7.2 89 6.4 7.6 84
----- -----
Basin wide percent of average 87 95
SHOSHONE RIVER
BLACKWATER 9780 8.4 11.1 76 8.1 10.2 79
EVENING STAR 9200 8.7 12.6 69 10.8 12.0 90
KIRWIN 9550 4.8 5.5 87 5.2 5.6 93
MARQUETTE 8760 2.0 4.8 42 4.4 5.1 86
SYLVAN LAKE 8420 7.0 9.6 73 9.1 10.3 88
SYLVAN ROAD 7120 4.5 5.6 80 7.0 9.6 73
YOUNTS PEAK 8350 6.4 7.2 89 6.4 7.6 84
----- -----
Basin wide percent of average 74 84
POWDER-TONGUE
BEAR TRAP MEADOW 8200 3.2 2.4 133 4.7 4.3 109
BIG GOOSE 7990 3.4 4.0 85 5.7 4.3 133
BONE SPRINGS DIV 9350 8.8 7.4 119 7.4 6.8 109
BURGESS JUNCTION 7880 5.4 5.2 104 6.4 5.7 112
CLOUD PEAK RESERVOIR 9860 7.2 5.4 133 7.9 6.1 130
DOME LAKE 8880 5.7 5.7 100 7.3 6.5 112
GRAVE SPRINGS 8550 2.6 3.7 70 4.1 4.6 89
HANSEN SAWMILL 8360 2.5 3.0 83 5.2 4.1 127
MIDDLE POWDER 7760 3.2 5.3 60 4.5 6.5 69
POWDER RIVER PASS 9480 5.9 4.9 120 6.8 5.6 121
SUCKER CREEK 8880 6.8 5.0 136 8.6 6.3 137
TIE CREEK 6870 1.5 2.3 65 7.4 4.8 154
----- -----
Basin wide percent of average 103 116
BELLE FOURCHE
BLIND PARK 6890 4.3 3.2 134 8.0 5.9 136
COLE CANYON 5910 3.2 3.1 103 7.2 3.7 195
NORTH RAPID CREEK 6130 4.6 3.0 153 7.8 5.0 156
----- -----
Basin wide percent of average 130 158
UPPER N. PLATTE RIVER
COLUMBINE 9160 7.7 8.9 87 8.3 10.5 79
DIVIDE PEAK 8880 7.0 8.4 83 9.2 9.3 99
ELK RIVER 8700 7.5 6.3 119 8.7 8.1 107
JOE WRIGHT 10120 10.4 9.0 116 12.7 11.1 114
NORTH FRENCH CREEK 10130 11.3 12.3 92 11.1 11.1 100
OLD BATTLE 10000 12.1 13.7 88 14.9 14.7 101
SAGE CREEK BASIN 7850 3.5 4.9 71 5.3 5.4 98
SOUTH BRUSH CREEK 8440 5.4 4.7 115 7.1 7.3 97
TOWER 10500 12.6 19.0 66 14.9 16.5 90
WEBBER SPRINGS 9250 9.3 10.6 88 11.8 12.0 98
WILLOW CREEK PASS 9540 5.3 5.2 102 5.9 6.1 97
----- -----
Basin wide percent of average 89 98
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.5 9.8 77 7.6 9.4 81
CASPER MTN. 7900 3.4 6.5 52 6.1 6.9 88
DEADMAN HILL 10220 6.3 7.1 89 6.8 7.3 93
DEER PARK 9700 6.3 6.1 103 8.5 10.2 83
LAPRELE CREEK 8375 -M 4.9 * -M 5.8 *
RENO HILL 8400 4.1 6.2 66 5.4 6.8 79
ROACH 9700 6.4 6.7 96 7.7 7.8 99
SAND LAKE 10050 10.6 13.9 76 9.6 10.7 90
SOUTH PASS 9040 5.9 7.6 78 8.0 8.6 93
WINDY PEAK 7900 2.4 3.3 73 3.1 5.2 60
----- -----
Basin wide percent of average 79 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.7 3.5 106 6.4 6.6 97
DIVIDE PEAK 8880 7.0 8.4 83 9.2 9.3 99
OLD BATTLE 10000 12.1 13.7 88 14.9 14.7 101
SANDSTONE RS 8150 4.9 4.6 107 7.6 8.2 93
WHISKEY PARK 8950 9.2 10.0 92 11.8 12.1 98
----- -----
Basin wide percent of average 92 98
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.3 6.4 83 5.8 6.1 95
BLIND BULL SUM 8650 8.6 12.1 71 8.6 10.2 84
EAST RIM DIVIDE 7930 3.0 5.4 56 6.0 5.3 113
ELKHART PARK G.S. 9400 5.6 5.8 97 7.2 6.2 116
GROS VENTRE SUMMIT 8750 6.0 6.3 95 7.0 6.0 117
GUNSIGHT PASS 9820 5.2 -M * 6.5 -M *
KENDALL R.S. 7740 4.0 6.0 67 6.5 6.3 103
LOOMIS PARK 8240 6.0 7.4 81 8.4 7.6 111
NEW FORK LAKE 8340 5.1 4.9 104 5.1 5.5 93
SNIDER BASIN 8060 4.7 6.3 75 6.0 7.2 83
SPRING CREEK DIVIDE 9000 8.6 11.5 75 10.1 11.8 86
TRIPLE PEAK 8500 8.9 10.8 82 10.5 10.2 103
----- -----
Basin wide percent of average 79 99
LOWER GREEN RIVER
HAMS FORK 7840 2.8 4.9 57 4.9 5.3 92
HEWINTA 9519 2.0 3.7 54 5.1 6.6 77
HICKERSON PARK 9145 1.1 2.6 42 3.7 4.0 92
HOLE-IN-ROCK 9150 1.5 2.4 62 3.6 3.7 97
INDIAN CREEK 9425 8.4 11.4 74 8.8 11.1 79
KELLEY R.S. 8180 5.6 7.0 80 7.2 9.2 78
STEEL CREEK PARK 10200 3.7 6.2 60 6.7 7.1 94
----- -----
Basin wide percent of average 66 85
UPPER BEAR RIVER
BUG LAKE 7950 3.7 7.4 50 6.8 8.5 80
HAYDEN FORK 9212 6.7 5.6 120 9.1 9.2 99
KELLEY R.S. 8180 5.6 7.0 80 7.2 9.2 78
LILY LAKE 9156 5.1 5.0 102 6.9 8.1 85
MONTE CRISTO 8960 9.4 9.8 96 10.7 11.2 96
SALT RIVER SUMMIT 7760 4.3 4.8 90 6.2 8.1 77
TRIAL LAKE 9992 9.0 9.5 95 9.4 10.3 91
----- -----
Basin wide percent of average 89 87
-----------------------------------------------------------------------------
-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 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.