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: DECEMBER 9 , 2006
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 2.8 5.1 55 6.4 7.2 89
COTTONWOOD CREEK 7600 5.4 6.0 90 8.4 9.4 89
GRANITE CREEK 6770 2.7 4.5 60 5.9 6.5 91
GRASSY LAKE 7265 6.0 9.5 63 12.9 11.6 111
GROS VENTRE SUMMIT 8750 3.7 4.7 79 5.1 4.8 106
LEWIS LAKE DIVIDE 7850 5.9 9.5 62 11.7 11.9 98
PHILLIPS BENCH 8200 4.9 8.1 60 9.3 9.0 103
SALT RIVER SUMMIT 7600 3.4 3.3 103 5.6 6.0 93
SNAKE RIVER STATION 6920 3.3 5.0 66 10.0 7.6 132
SPRING CREEK DIVIDE 9000 5.9 8.4 70 7.3 8.8 83
THUMB DIVIDE 7980 2.9 4.9 59 5.5 6.4 86
TOGWOTEE PASS 9580 6.0 8.2 73 7.4 8.5 87
TWO OCEAN PLATEAU 9240 7.0 9.7 72 8.0 9.6 83
WILLOW CREEK 8450 6.7 9.4 71 10.6 11.0 96
----- -----
Basin wide percent of average 69 96
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 5.0 8.2 61 5.7 7.0 81
BLACK BEAR 8170 9.2 11.7 79 13.2 12.3 107
CANYON 8090 2.8 3.9 72 5.9 5.6 105
FISHER CREEK 9100 9.5 11.2 85 12.4 11.7 106
MADISON PLATEAU 7750 4.7 7.5 63 8.5 8.5 100
NORTHEAST ENTRANCE 7350 1.5 3.2 47 5.8 4.6 126
PARKER PEAK 9400 5.9 7.7 77 6.9 6.2 111
SYLVAN LAKE 8420 4.1 7.5 55 8.6 8.1 106
THUMB DIVIDE 7980 2.9 4.9 59 5.5 6.4 86
TWO OCEAN PLATEAU 9240 7.0 9.7 72 8.0 9.6 83
WHISKEY CREEK 6800 3.1 4.8 65 7.4 6.9 107
WHITE MILL 8700 5.7 7.9 72 8.5 9.0 94
WOLVERINE 7650 2.3 3.7 62 4.1 5.1 80
----- -----
Basin wide percent of average 69 100
WIND RIVER
BURROUGHS CREEK 8750 2.8 4.6 61 4.7 5.7 82
COLD SPRINGS 9630 1.5 3.6 42 2.7 4.6 59
DEER PARK 9700 4.3 5.1 84 6.1 8.1 75
HOBBS PARK 10100 3.2 6.0 53 3.6 5.1 71
LITTLE WARM 9370 2.5 3.9 64 3.7 5.1 73
SOUTH PASS 9040 4.4 6.0 73 5.8 6.8 85
ST. LAWRENCE ALT 8620 1.5 3.0 50 2.7 3.8 71
TOGWOTEE PASS 9580 6.0 8.2 73 7.4 8.5 87
TOWNSEND CREEK 8700 2.2 3.4 65 4.6 4.9 94
----- -----
Basin wide percent of average 65 79
BIGHORN BASIN
BALD MTN. 9380 7.7 6.9 112 6.3 6.1 103
BEAR TRAP MEADOW 8200 1.8 1.9 95 2.9 3.7 78
BLACKWATER 9780 6.2 9.0 69 6.8 8.1 84
BONE SPRINGS DIV 9350 7.0 5.9 119 5.8 5.5 105
EVENING STAR 9200 5.8 10.0 58 9.7 9.4 103
GRAVE SPRINGS 8550 2.3 2.9 79 2.8 3.9 72
KIRWIN 9550 3.0 4.7 64 4.0 4.6 87
MARQUETTE 8760 .4 4.1 10 3.3 4.4 75
MIDDLE POWDER 7760 3.3 4.1 80 3.8 5.4 70
OWL CREEK 8975 2.1 2.1 100 2.7 2.4 113
POWDER RIVER PASS 9480 3.4 3.8 89 4.2 4.6 91
SHELL CREEK 9580 6.9 5.6 123 4.9 5.1 96
SYLVAN LAKE 8420 4.1 7.5 55 8.6 8.1 106
SYLVAN ROAD 7120 1.6 4.3 37 6.7 7.5 89
TIMBER CREEK 7950 .3 2.5 12 2.8 3.2 87
YOUNTS PEAK 8350 2.5 5.6 45 5.3 6.0 88
----- -----
Basin wide percent of average 72 92
SHOSHONE RIVER
BLACKWATER 9780 6.2 9.0 69 6.8 8.1 84
EVENING STAR 9200 5.8 10.0 58 9.7 9.4 103
KIRWIN 9550 3.0 4.7 64 4.0 4.6 87
MARQUETTE 8760 .4 4.1 10 3.3 4.4 75
SYLVAN LAKE 8420 4.1 7.5 55 8.6 8.1 106
SYLVAN ROAD 7120 1.6 4.3 37 6.7 7.5 89
YOUNTS PEAK 8350 2.5 5.6 45 5.3 6.0 88
----- -----
Basin wide percent of average 52 92
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.8 1.9 95 2.9 3.7 78
BIG GOOSE 7990 2.0 2.9 69 3.3 3.4 97
BONE SPRINGS DIV 9350 7.0 5.9 119 5.8 5.5 105
BURGESS JUNCTION 7880 3.4 4.0 85 4.8 4.7 102
CLOUD PEAK RESERVOIR 9860 3.7 4.3 86 3.7 5.3 70
DOME LAKE 8880 3.5 4.6 76 4.5 5.4 83
GRAVE SPRINGS 8550 2.3 2.9 79 2.8 3.9 72
HANSEN SAWMILL 8360 .7 2.3 30 2.0 3.5 57
MIDDLE POWDER 7760 3.3 4.1 80 3.8 5.4 70
POWDER RIVER PASS 9480 3.4 3.8 89 4.2 4.6 91
SUCKER CREEK 8880 4.5 3.7 122 5.3 5.1 104
TIE CREEK 6870 .7 1.4 50 4.6 4.1 112
----- -----
Basin wide percent of average 87 87
BELLE FOURCHE
BLIND PARK 6890 .8 2.3 35 3.4 4.9 69
COLE CANYON 5910 1.2 2.2 55 4.0 -M *
NORTH RAPID CREEK 6130 1.8 2.1 86 3.1 4.2 74
----- -----
Basin wide percent of average 58 71
UPPER N. PLATTE RIVER
COLUMBINE 9160 5.0 6.2 81 7.5 7.7 97
DIVIDE PEAK 8860 5.6 6.1 92 7.7 7.2 107
ELK RIVER 8700 3.7 4.1 90 6.6 6.2 106
JOE WRIGHT 10120 6.9 7.1 97 7.9 8.8 90
NORTH FRENCH CREEK 10130 7.6 9.3 82 8.5 8.7 98
OLD BATTLE 9920 8.8 10.6 83 11.4 11.0 104
SAGE CREEK BASIN 7850 4.1 3.6 114 5.8 4.2 138
SOUTH BRUSH CREEK 8440 3.1 3.5 89 5.3 5.9 90
TOWER 10500 10.3 14.7 70 12.4 12.5 99
WEBBER SPRINGS 9250 6.2 7.9 78 9.7 9.1 107
WILLOW CREEK PASS 9540 4.9 4.1 120 4.6 4.9 94
----- -----
Basin wide percent of average 86 101
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 5.6 7.2 78 6.4 7.2 89
CASPER MTN. 7850 3.1 5.2 60 4.7 5.7 82
DEADMAN HILL 10220 5.0 5.7 88 5.5 6.0 92
DEER PARK 9700 4.3 5.1 84 6.1 8.1 75
LAPRELE CREEK 8375 2.4 3.8 63 3.5 4.8 73
RENO HILL 8500 4.0 4.9 82 5.1 5.6 91
ROACH 9700 5.7 5.0 114 7.4 6.1 121
SAND LAKE 10050 7.4 10.7 69 7.9 8.3 95
SOUTH PASS 9040 4.4 6.0 73 5.8 6.8 85
WINDY PEAK 7900 1.7 2.6 65 3.5 4.2 83
----- -----
Basin wide percent of average 78 89
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .8 2.3 35 4.8 5.1 94
DIVIDE PEAK 8860 5.6 6.1 92 7.7 7.2 107
OLD BATTLE 9920 8.8 10.6 83 11.4 11.0 104
SANDSTONE RS 8150 2.7 3.0 90 5.2 6.4 81
WHISKEY PARK 8950 4.9 7.3 67 8.3 9.2 90
----- -----
Basin wide percent of average 78 96
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.3 4.8 90 4.7 4.9 96
BLIND BULL SUM 8900 6.0 8.7 69 6.2 7.6 82
EAST RIM DIVIDE 7930 1.9 3.9 49 3.8 4.1 93
ELKHART PARK G.S. 9400 2.5 4.2 60 4.6 5.0 92
GROS VENTRE SUMMIT 8750 3.7 4.7 79 5.1 4.8 106
KENDALL R.S. 7740 2.0 4.1 49 4.4 4.8 92
LOOMIS PARK 8240 2.6 5.4 48 5.0 5.8 86
NEW FORK LAKE 8340 2.4 3.5 69 4.3 4.3 100
SNIDER BASIN 8060 3.3 4.5 73 4.9 5.4 91
SPRING CREEK DIVIDE 9000 5.9 8.4 70 7.3 8.8 83
TRIPLE PEAK 8500 5.7 7.8 73 8.2 7.7 106
----- -----
Basin wide percent of average 67 93
LOWER GREEN RIVER
HAMS FORK 7840 2.3 3.2 72 3.8 4.1 93
HEWINTA 9500 1.6 2.6 62 5.7 5.4 106
HICKERSON PARK 9100 .7 1.8 39 4.0 3.5 114
HOLE-IN-ROCK 9150 1.8 1.8 100 3.6 3.2 112
INDIAN CREEK 9425 6.1 8.2 74 6.7 8.3 81
KELLEY R.S. 8180 3.9 5.1 76 6.0 6.8 88
STEEL CREEK PARK 10100 4.0 4.7 85 5.7 5.8 98
----- -----
Basin wide percent of average 74 96
UPPER BEAR RIVER
BUG LAKE 7950 3.6 5.1 71 6.3 6.6 95
HAYDEN FORK 9100 3.2 3.8 84 9.1 7.1 128
KELLEY R.S. 8180 3.9 5.1 76 6.0 6.8 88
LILY LAKE 9050 3.7 3.5 106 6.6 6.4 103
MONTE CRISTO 8960 6.5 6.6 98 8.7 8.5 102
SALT RIVER SUMMIT 7600 3.4 3.3 103 5.6 6.0 93
TRIAL LAKE 9960 4.2 6.8 62 8.7 7.9 110
----- -----
Basin wide percent of average 83 103
-----------------------------------------------------------------------------
-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.