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 8 , 2001
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 4.0 5.0 80 8.5 6.9 123
COTTONWOOD CREEK 7600 6.1 5.8 105 8.9 9.0 99
GRANITE CREEK 6770 5.3 4.3 123 9.0 6.1 148
GRASSY LAKE 7265 8.0 9.2 87 12.2 11.1 110
GROS VENTRE SUMMIT 8775 5.4 4.6 117 4.8 4.7 102
LEWIS LAKE DIVIDE 7860 9.7 9.3 104 11.8 11.3 104
PHILLIPS BENCH 8200 9.5 7.9 120 11.0 8.6 128
SALT RIVER SUMMIT 7600 4.0 3.2 125 6.3 5.8 109
SNAKE RIVER STATION 6920 -M 4.9 * -M 7.3 *
SPRING CREEK DIVIDE 9000 7.0 8.2 85 9.8 8.5 115
THUMB DIVIDE 7980 4.9 4.8 102 7.2 6.1 118
TOGWOTEE PASS 9580 8.4 8.1 104 8.5 8.2 104
TWO OCEAN PLATEAU 9360 10.5 9.5 111 6.9 9.2 75
WILLOW CREEK 8450 7.4 9.2 80 13.0 10.5 124
----- -----
Basin wide percent of average 101 111
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 7.5 8.1 93 6.9 6.6 105
BLACK BEAR 7950 13.8 11.4 121 15.2 12.0 127
CANYON 7940 4.6 3.8 121 5.8 5.5 105
FISHER CREEK 9100 10.4 10.9 95 10.4 10.2 102
MADISON PLATEAU 7750 7.7 7.3 105 11.3 8.2 138
NORTHEAST ENTRANCE 7350 1.8 3.1 58 3.9 4.6 85
PARKER PEAK 9400 6.3 7.6 83 5.6 6.2 90
SYLVAN LAKE 8420 6.3 7.4 85 8.5 8.3 102
THUMB DIVIDE 7980 4.9 4.8 102 7.2 6.1 118
TWO OCEAN PLATEAU 9360 10.5 9.5 111 6.9 9.2 75
WHISKEY CREEK 6800 4.9 4.7 104 8.6 6.7 128
WHITE MILL 8700 -M 7.8 * -M 8.3 *
WOLVERINE 7650 2.4 3.6 67 4.1 4.7 87
----- -----
Basin wide percent of average 99 107
WIND RIVER
BURROUGHS CREEK 8750 5.5 4.5 122 5.9 5.6 105
COLD SPRINGS 9630 1.5 3.5 43 2.3 4.3 53
DEER PARK 9700 6.5 5.0 130 7.9 -M *
HOBBS PARK 10100 4.1 5.9 69 3.4 5.1 67
LITTLE WARM 9620 3.4 3.8 89 4.6 4.8 96
SOUTH PASS 9040 5.1 5.8 88 6.2 6.1 102
ST. LAWRENCE ALT 8620 .8 3.0 27 1.9 3.6 53
TOGWOTEE PASS 9580 8.4 8.1 104 8.5 8.2 104
TOWNSEND CREEK 8700 1.5 3.4 44 2.0 4.8 42
----- -----
Basin wide percent of average 86 82
BIGHORN BASIN
BALD MTN. 9375 6.4 6.8 94 5.7 5.9 97
BEAR TRAP MEADOW 7900 1.8 1.8 100 4.0 3.6 111
BLACKWATER 9780 7.6 8.8 86 6.6 7.5 88
BONE SPRINGS DIV 9350 5.5 5.8 95 5.4 5.3 102
EVENING STAR 9200 8.0 9.8 82 9.8 9.2 107
GRAVE SPRINGS 8550 1.6 2.9 55 4.0 3.8 105
KIRWIN 9550 3.9 4.7 83 4.1 4.5 91
MARQUETTE 8760 1.5 4.0 38 1.7 4.0 42
MIDDLE POWDER 7760 1.7 4.0 42 4.0 5.0 80
OWL CREEK 8975 1.0 2.1 48 1.6 2.4 67
POWDER RIVER PASS 9480 4.5 3.8 118 5.9 4.4 134
SHELL CREEK 9580 6.5 5.5 118 6.1 4.8 127
SYLVAN LAKE 8420 6.3 7.4 85 8.5 8.3 102
SYLVAN ROAD 8120 3.0 4.2 71 7.0 7.7 91
TIMBER CREEK 7950 .5 2.5 20 1.7 3.5 49
YOUNTS PEAK 8350 4.7 5.5 85 5.9 5.6 105
----- -----
Basin wide percent of average 81 96
SHOSHONE RIVER
BLACKWATER 9780 7.6 8.8 86 6.6 7.5 88
EVENING STAR 9200 8.0 9.8 82 9.8 9.2 107
KIRWIN 9550 3.9 4.7 83 4.1 4.5 91
MARQUETTE 8760 1.5 4.0 38 1.7 4.0 42
SYLVAN LAKE 8420 6.3 7.4 85 8.5 8.3 102
SYLVAN ROAD 8120 3.0 4.2 71 7.0 7.7 91
YOUNTS PEAK 8350 4.7 5.5 85 5.9 5.6 105
----- -----
Basin wide percent of average 79 93
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.8 1.8 100 4.0 3.6 111
BIG GOOSE 7990 2.8 -M * 4.8 4.2 114
BONE SPRINGS DIV 9350 5.5 5.8 95 5.4 5.3 102
BURGESS JUNCTION 7880 2.3 4.0 57 3.9 4.4 89
CLOUD PEAK RESERVOIR 9860 4.4 4.2 105 5.5 5.5 100
DOME LAKE 8880 4.1 4.5 91 6.2 5.2 119
GRAVE SPRINGS 8550 1.6 2.9 55 4.0 3.8 105
HANSEN SAWMILL 8760 1.4 2.3 61 3.4 3.4 100
MIDDLE POWDER 7760 1.7 4.0 42 4.0 5.0 80
POWDER RIVER PASS 9480 4.5 3.8 118 5.9 4.4 134
SUCKER CREEK 8880 3.3 3.6 92 5.4 5.0 108
TIE CREEK 6870 .8 1.4 57 4.2 3.7 114
----- -----
Basin wide percent of average 82 106
BELLE FOURCHE
BLIND PARK 6890 1.8 2.2 82 3.8 4.0 95
COLE CANYON 5910 .5 -M * 1.9 -M *
NORTH RAPID CREEK 6130 2.2 -M * 3.0 3.5 86
----- -----
Basin wide percent of average 82* 91
UPPER N. PLATTE RIVER
COLUMBINE 9400 5.7 6.0 95 7.0 7.4 95
DIVIDE PEAK 8800 5.1 6.0 85 5.8 7.0 83
ELK RIVER 8700 3.8 4.0 95 5.5 5.9 93
JOE WRIGHT 10120 6.9 7.0 99 7.2 8.5 85
NORTH FRENCH CREEK 10100 5.0 9.1 55 5.2 8.3 63
OLD BATTLE 10000 8.6 10.4 83 10.3 10.6 97
SAGE CREEK BASIN 7850 3.4 -M * 6.9 -M *
SOUTH BRUSH CREEK 8400 2.5 3.4 74 3.4 5.7 60
TOWER 10500 10.9 14.4 76 11.6 12.0 97
WEBBER SPRINGS 9200 6.8 7.8 87 8.1 8.8 92
WILLOW CREEK PASS 9540 2.6 4.0 65 3.4 4.8 71
----- -----
Basin wide percent of average 80 85
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 4.3 7.0 61 5.1 7.0 73
CASPER MTN. 7900 3.5 5.2 67 5.3 5.7 93
DEADMAN HILL 10220 2.6 5.6 46 3.9 5.8 67
DEER PARK 9700 6.5 5.0 130 7.9 -M *
LAPRELE CREEK 8320 1.7 3.7 46 4.5 4.6 98
RENO HILL 8400 3.1 4.8 65 4.5 5.5 82
ROACH 9700 2.6 4.9 53 4.3 5.9 73
SAND LAKE 10080 7.3 10.6 69 7.5 8.1 93
SOUTH PASS 9040 5.1 5.8 88 6.2 6.1 102
WINDY PEAK 7840 1.1 2.6 42 3.5 4.1 85
----- -----
Basin wide percent of average 68 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.4 2.2 155 2.0 4.9 41
DIVIDE PEAK 8800 5.1 6.0 85 5.8 7.0 83
OLD BATTLE 10000 8.6 10.4 83 10.3 10.6 97
SANDSTONE RS 8150 3.1 3.0 103 6.4 6.2 103
WHISKEY PARK 8950 6.9 7.1 97 9.1 8.8 103
----- -----
Basin wide percent of average 94 90
UPPER GREEN RIVER
BIG SANDY OPENING 9100 6.0 4.7 128 5.2 4.7 111
BLIND BULL SUM 8650 9.4 8.5 111 9.0 7.3 123
EAST RIM DIVIDE 7930 3.3 3.8 87 5.3 3.9 136
ELKHART PARK G.S. 9400 4.8 4.2 114 5.7 4.8 119
GROS VENTRE SUMMIT 8775 5.4 4.6 117 4.8 4.7 102
KENDALL R.S. 7740 3.7 4.0 92 5.9 4.6 128
LOOMIS PARK 8240 6.2 5.2 119 7.1 5.6 127
NEW FORK LAKE 8340 3.5 3.4 103 4.5 4.3 105
SNIDER BASIN 8250 1.6 4.4 36 5.7 5.2 110
SPRING CREEK DIVIDE 9000 7.0 8.2 85 9.8 8.5 115
TRIPLE PEAK 8500 8.1 7.6 107 10.2 7.4 138
----- -----
Basin wide percent of average 101 120
LOWER GREEN RIVER
HAMS FORK 7840 4.3 3.1 139 4.1 4.0 102
HEWINTA 9500 3.5 2.5 140 5.9 5.3 111
HICKERSON PARK 9150 1.5 1.8 83 3.4 3.4 100
HOLE-IN-ROCK 9150 2.1 1.8 117 3.6 3.1 116
INDIAN CREEK 9425 9.2 8.1 114 8.3 8.0 104
KELLEY R.S. 8180 5.5 5.0 110 7.4 6.6 112
STEEL CREEK PARK 10100 4.7 4.6 102 5.5 5.6 98
----- -----
Basin wide percent of average 114 106
UPPER BEAR RIVER
BUG LAKE 7950 5.0 4.9 102 8.1 6.4 127
HAYDEN FORK 9400 6.1 3.8 161 9.1 6.9 132
KELLEY R.S. 8180 5.5 5.0 110 7.4 6.6 112
LILY LAKE 9050 4.5 3.5 129 6.9 6.3 110
MONTE CRISTO 8960 7.8 6.4 122 9.9 8.2 121
SALT RIVER SUMMIT 7600 4.0 3.2 125 6.3 5.8 109
TRIAL LAKE 9960 8.7 6.7 130 11.4 7.6 150
----- -----
Basin wide percent of average 124 124
-----------------------------------------------------------------------------
-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.