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 THURSDAY: DECEMBER 21 , 2006
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 5.7 6.7 85 9.2 8.9 103
COTTONWOOD CREEK 7600 7.5 7.9 95 10.5 11.5 91
GRANITE CREEK 6770 4.8 6.1 79 8.0 8.0 100
GRASSY LAKE 7265 9.7 12.2 80 16.7 14.6 114
GROS VENTRE SUMMIT 8750 4.9 5.9 83 6.3 5.7 111
LEWIS LAKE DIVIDE 7850 9.7 12.3 79 15.3 14.8 103
PHILLIPS BENCH 8200 7.9 10.5 75 12.0 11.3 106
SALT RIVER SUMMIT 7600 4.3 4.4 98 6.6 7.6 87
SNAKE RIVER STATION 6920 5.7 6.5 88 12.6 9.4 134
SPRING CREEK DIVIDE 9000 8.0 10.6 75 9.3 11.0 85
THUMB DIVIDE 7980 4.4 6.3 70 6.7 7.8 86
TOGWOTEE PASS 9580 8.2 10.0 82 9.7 10.3 94
TWO OCEAN PLATEAU 9240 10.1 11.7 86 10.6 11.6 91
WILLOW CREEK 8450 9.5 12.0 79 13.4 13.3 101
----- -----
Basin wide percent of average 82 101
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.1 9.9 72 7.7 8.5 91
BLACK BEAR 8170 12.8 14.7 87 16.7 15.1 111
CANYON 8090 4.2 5.1 82 7.2 6.7 107
FISHER CREEK 9100 13.6 14.0 97 15.1 14.5 104
MADISON PLATEAU 7750 6.5 9.5 68 10.1 10.6 95
NORTHEAST ENTRANCE 7350 2.4 4.2 57 6.8 5.5 124
PARKER PEAK 9400 7.6 9.2 83 8.1 7.2 112
SYLVAN LAKE 8420 5.7 9.1 63 10.6 9.6 110
THUMB DIVIDE 7980 4.4 6.3 70 6.7 7.8 86
TWO OCEAN PLATEAU 9240 10.1 11.7 86 10.6 11.6 91
WHISKEY CREEK 6800 4.0 6.3 63 8.6 8.5 101
WHITE MILL 8700 7.9 9.7 81 10.0 11.0 91
WOLVERINE 7650 4.1 4.8 85 5.2 6.1 85
----- -----
Basin wide percent of average 79 101
WIND RIVER
BURROUGHS CREEK 8750 5.1 5.7 89 6.8 6.9 99
COLD SPRINGS 9630 1.9 4.1 46 3.2 5.2 62
DEER PARK 9700 4.2 6.0 70 6.7 9.6 70
HOBBS PARK 10100 3.5 7.0 50 3.9 5.8 67
LITTLE WARM 9370 3.5 4.7 74 4.6 6.0 77
SOUTH PASS 9040 4.8 7.3 66 6.3 8.1 78
ST. LAWRENCE ALT 8620 1.5 3.5 43 2.9 4.2 69
TOGWOTEE PASS 9580 8.2 10.0 82 9.7 10.3 94
TOWNSEND CREEK 8700 2.1 3.9 54 4.9 5.5 89
----- -----
Basin wide percent of average 67 80
BIGHORN BASIN
BALD MTN. 9380 8.1 8.4 96 6.5 7.4 88
BEAR TRAP MEADOW 8200 1.7 2.3 74 2.6 4.1 63
BLACKWATER 9780 8.7 10.6 82 8.8 9.5 93
BONE SPRINGS DIV 9350 7.4 6.9 107 6.0 6.4 94
EVENING STAR 9200 9.4 12.0 78 13.2 11.3 117
GRAVE SPRINGS 8550 2.2 3.4 65 3.0 4.4 68
KIRWIN 9550 3.8 5.4 70 4.8 5.3 91
MARQUETTE 8760 -M 4.5 * 3.3 4.9 67
MIDDLE POWDER 7760 3.2 4.9 65 3.8 6.1 62
OWL CREEK 8975 2.3 2.4 96 3.0 2.7 111
POWDER RIVER PASS 9480 3.5 4.6 76 4.3 5.3 81
SHELL CREEK 9580 7.2 6.5 111 5.2 5.9 88
SYLVAN LAKE 8420 5.7 9.1 63 10.6 9.6 110
SYLVAN ROAD 7120 3.2 5.4 59 8.6 8.9 97
TIMBER CREEK 7950 .1 2.7 4 2.9 3.5 83
YOUNTS PEAK 8350 4.1 6.8 60 6.3 7.1 89
----- -----
Basin wide percent of average 77 91
SHOSHONE RIVER
BLACKWATER 9780 8.7 10.6 82 8.8 9.5 93
EVENING STAR 9200 9.4 12.0 78 13.2 11.3 117
KIRWIN 9550 3.8 5.4 70 4.8 5.3 91
MARQUETTE 8760 -M 4.5 * 3.3 4.9 67
SYLVAN LAKE 8420 5.7 9.1 63 10.6 9.6 110
SYLVAN ROAD 7120 3.2 5.4 59 8.6 8.9 97
YOUNTS PEAK 8350 4.1 6.8 60 6.3 7.1 89
----- -----
Basin wide percent of average 71 98
POWDER-TONGUE
BEAR TRAP MEADOW 8200 1.7 2.3 74 2.6 4.1 63
BIG GOOSE 7990 1.9 3.7 51 3.2 4.0 80
BONE SPRINGS DIV 9350 7.4 6.9 107 6.0 6.4 94
BURGESS JUNCTION 7880 3.5 4.8 73 4.8 5.4 89
CLOUD PEAK RESERVOIR 9860 4.0 5.0 80 3.5 5.9 59
DOME LAKE 8880 3.8 5.4 70 4.9 6.2 79
GRAVE SPRINGS 8550 2.2 3.4 65 3.0 4.4 68
HANSEN SAWMILL 8360 .7 2.8 25 1.8 3.9 46
MIDDLE POWDER 7760 3.2 4.9 65 3.8 6.1 62
POWDER RIVER PASS 9480 3.5 4.6 76 4.3 5.3 81
SUCKER CREEK 8880 4.4 4.5 98 5.3 5.9 90
TIE CREEK 6870 .6 1.9 32 4.6 4.6 100
----- -----
Basin wide percent of average 74 77
BELLE FOURCHE
BLIND PARK 6890 .7 2.9 24 3.6 5.6 64
COLE CANYON 5910 .9 2.6 35 3.7 -M *
NORTH RAPID CREEK 6130 1.9 2.7 70 3.1 4.8 65
----- -----
Basin wide percent of average 43 64
UPPER N. PLATTE RIVER
COLUMBINE 9160 7.2 8.1 89 9.6 9.7 99
DIVIDE PEAK 8860 7.8 7.7 101 9.3 8.7 107
ELK RIVER 8700 6.2 5.6 111 7.7 7.6 101
JOE WRIGHT 10120 -M 8.4 * -M 10.4 *
NORTH FRENCH CREEK 10130 10.6 11.4 93 11.2 10.4 108
OLD BATTLE 9920 11.1 12.8 87 13.3 13.6 98
SAGE CREEK BASIN 7850 5.5 4.5 122 6.8 5.0 136
SOUTH BRUSH CREEK 8440 5.2 4.3 121 7.0 6.9 101
TOWER 10500 13.3 17.8 75 15.7 15.3 103
WEBBER SPRINGS 9250 8.1 9.8 83 11.4 11.2 102
WILLOW CREEK PASS 9540 6.0 4.9 122 5.8 5.7 102
----- -----
Basin wide percent of average 93 104
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 7.8 9.1 86 8.6 8.7 99
CASPER MTN. 7850 3.1 6.1 51 5.1 6.5 78
DEADMAN HILL 10220 -M 6.7 * 8.2 7.0 117
DEER PARK 9700 4.2 6.0 70 6.7 9.6 70
LAPRELE CREEK 8375 3.2 4.6 70 4.2 5.5 76
RENO HILL 8500 4.8 5.8 83 5.7 6.5 88
ROACH 9700 8.4 6.2 135 10.1 7.3 138
SAND LAKE 10050 10.4 13.0 80 10.6 10.0 106
SOUTH PASS 9040 4.8 7.3 66 6.3 8.1 78
WINDY PEAK 7900 3.0 3.1 97 4.3 4.9 88
----- -----
Basin wide percent of average 81 94
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.1 3.1 68 5.9 6.1 97
DIVIDE PEAK 8860 7.8 7.7 101 9.3 8.7 107
OLD BATTLE 9920 11.1 12.8 87 13.3 13.6 98
SANDSTONE RS 8150 3.2 4.1 78 6.8 7.7 88
WHISKEY PARK 8950 7.6 9.2 83 10.5 11.3 93
----- -----
Basin wide percent of average 86 97
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.9 5.9 83 5.2 5.8 90
BLIND BULL SUM 8900 8.9 11.1 80 8.3 9.4 88
EAST RIM DIVIDE 7930 3.0 5.0 60 4.8 5.0 96
ELKHART PARK G.S. 9400 3.6 5.3 68 5.5 5.9 93
GROS VENTRE SUMMIT 8750 4.9 5.9 83 6.3 5.7 111
KENDALL R.S. 7740 4.0 5.5 73 6.1 5.9 103
LOOMIS PARK 8240 4.3 6.8 63 6.6 7.1 93
NEW FORK LAKE 8340 3.5 4.5 78 5.1 5.2 98
SNIDER BASIN 8060 4.4 5.8 76 5.9 6.7 88
SPRING CREEK DIVIDE 9000 8.0 10.6 75 9.3 11.0 85
TRIPLE PEAK 8500 8.0 10.0 80 10.7 9.5 113
----- -----
Basin wide percent of average 75 96
LOWER GREEN RIVER
HAMS FORK 7840 3.1 4.4 70 4.5 5.0 90
HEWINTA 9500 3.0 3.3 91 6.5 6.3 103
HICKERSON PARK 9100 1.5 2.4 62 4.7 3.8 124
HOLE-IN-ROCK 9150 2.6 2.2 118 4.4 3.6 122
INDIAN CREEK 9425 8.2 10.5 78 8.2 10.4 79
KELLEY R.S. 8180 5.0 6.4 78 7.2 8.5 85
STEEL CREEK PARK 10100 5.5 5.7 96 6.7 6.7 100
----- -----
Basin wide percent of average 83 95
UPPER BEAR RIVER
BUG LAKE 7950 5.2 6.7 78 7.3 8.0 91
HAYDEN FORK 9100 4.3 5.1 84 10.2 8.6 119
KELLEY R.S. 8180 5.0 6.4 78 7.2 8.5 85
LILY LAKE 9050 4.8 4.5 107 7.8 7.6 103
MONTE CRISTO 8960 9.0 8.8 102 10.8 10.4 104
SALT RIVER SUMMIT 7600 4.3 4.4 98 6.6 7.6 87
TRIAL LAKE 9960 5.0 8.7 57 10.0 9.6 104
----- -----
Basin wide percent of average 84 99
-----------------------------------------------------------------------------
-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.