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 TUESDAY: DECEMBER 4 , 2001
-----------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
-----------------------------------------------------------------------------
WYOMING
SNAKE RIVER
BASE CAMP 7030 3.0 4.5 67 7.4 6.3 117
COTTONWOOD CREEK 7600 4.3 5.2 83 7.2 8.3 87
GRANITE CREEK 6770 3.8 3.8 100 7.5 5.6 134
GRASSY LAKE 7265 6.3 8.4 75 10.4 10.1 103
GROS VENTRE SUMMIT 8775 -M 4.2 * -M 4.4 *
LEWIS LAKE DIVIDE 7860 7.8 8.4 93 10.8 10.3 105
PHILLIPS BENCH 8200 7.1 7.0 101 8.7 7.8 112
SALT RIVER SUMMIT 7600 2.8 2.9 97 5.0 5.3 94
SNAKE RIVER STATION 6920 2.6 4.4 59 6.5 6.7 97
SPRING CREEK DIVIDE 9000 5.4 7.4 73 7.7 7.7 100
THUMB DIVIDE 7980 3.9 4.3 91 6.3 5.7 111
TOGWOTEE PASS 9580 7.2 7.5 96 7.3 7.6 96
TWO OCEAN PLATEAU 9360 9.2 8.8 105 5.8 8.5 68
WILLOW CREEK 8450 5.2 8.3 63 10.8 9.7 111
----- -----
Basin wide percent of average 85 102
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 6.9 7.5 92 6.4 6.0 107
BLACK BEAR 7950 12.3 10.4 118 13.8 11.0 125
CANYON 7940 4.1 3.5 117 5.3 5.1 104
FISHER CREEK 9100 9.2 9.9 93 9.5 9.4 101
MADISON PLATEAU 7750 6.6 6.6 100 10.1 7.6 133
NORTHEAST ENTRANCE 7350 1.5 2.8 54 3.6 4.2 86
PARKER PEAK 9400 5.7 7.1 80 -M 5.7 *
SYLVAN LAKE 8420 5.7 6.8 84 7.8 7.7 101
THUMB DIVIDE 7980 3.9 4.3 91 6.3 5.7 111
TWO OCEAN PLATEAU 9360 9.2 8.8 105 5.8 8.5 68
WHISKEY CREEK 6800 4.1 4.2 98 7.7 6.2 124
WHITE MILL 8700 6.9 7.1 97 7.0 7.7 91
WOLVERINE 7650 1.6 3.3 48 4.0 4.4 91
----- -----
Basin wide percent of average 94 105
WIND RIVER
BURROUGHS CREEK 8750 4.4 4.1 107 4.9 5.2 94
COLD SPRINGS 9630 1.1 3.3 33 1.9 4.1 46
DEER PARK 9700 5.3 4.7 113 6.2 -M *
HOBBS PARK 10100 3.4 5.6 61 2.8 4.9 57
LITTLE WARM 9620 3.0 3.6 83 3.9 4.5 87
SOUTH PASS 9040 3.6 5.3 68 4.8 5.7 84
ST. LAWRENCE ALT 8620 .7 2.8 25 1.6 3.4 47
TOGWOTEE PASS 9580 7.2 7.5 96 7.3 7.6 96
TOWNSEND CREEK 8700 1.2 3.1 39 1.7 4.6 37
----- -----
Basin wide percent of average 75 72
BIGHORN BASIN
BALD MTN. 9375 6.1 6.3 97 5.5 5.5 100
BEAR TRAP MEADOW 7900 1.6 1.7 94 3.8 3.5 109
BLACKWATER 9780 6.6 8.2 80 5.8 7.0 83
BONE SPRINGS DIV 9350 5.2 5.5 95 5.2 5.0 104
EVENING STAR 9200 7.0 9.1 77 8.7 8.5 102
GRAVE SPRINGS 8550 1.6 2.8 57 3.9 3.6 108
KIRWIN 9550 3.4 4.4 77 3.7 4.3 86
MARQUETTE 8760 1.3 3.9 33 1.4 3.8 37
MIDDLE POWDER 7760 1.7 3.7 46 4.0 4.8 83
OWL CREEK 8975 1.0 2.0 50 1.5 2.3 65
POWDER RIVER PASS 9480 4.3 3.5 123 5.6 4.1 137
SHELL CREEK 9580 6.3 5.3 119 6.0 4.5 133
SYLVAN LAKE 8420 5.7 6.8 84 7.8 7.7 101
SYLVAN ROAD 8120 2.5 3.8 66 6.3 7.1 89
TIMBER CREEK 7950 .5 2.4 21 1.8 3.3 55
YOUNTS PEAK 8350 4.3 5.0 86 5.5 5.2 106
----- -----
Basin wide percent of average 79 95
SHOSHONE RIVER
BLACKWATER 9780 6.6 8.2 80 5.8 7.0 83
EVENING STAR 9200 7.0 9.1 77 8.7 8.5 102
KIRWIN 9550 3.4 4.4 77 3.7 4.3 86
MARQUETTE 8760 1.3 3.9 33 1.4 3.8 37
SYLVAN LAKE 8420 5.7 6.8 84 7.8 7.7 101
SYLVAN ROAD 8120 2.5 3.8 66 6.3 7.1 89
YOUNTS PEAK 8350 4.3 5.0 86 5.5 5.2 106
----- -----
Basin wide percent of average 75 90
POWDER-TONGUE
BEAR TRAP MEADOW 7900 1.6 1.7 94 3.8 3.5 109
BIG GOOSE 7990 2.7 -M * 4.7 4.1 115
BONE SPRINGS DIV 9350 5.2 5.5 95 5.2 5.0 104
BURGESS JUNCTION 7880 2.3 3.7 62 3.9 4.2 93
CLOUD PEAK RESERVOIR 9860 4.0 4.0 100 5.2 5.2 100
DOME LAKE 8880 3.9 4.3 91 5.7 4.9 116
GRAVE SPRINGS 8550 1.6 2.8 57 3.9 3.6 108
HANSEN SAWMILL 8760 1.4 2.1 67 3.4 3.3 103
MIDDLE POWDER 7760 1.7 3.7 46 4.0 4.8 83
POWDER RIVER PASS 9480 4.3 3.5 123 5.6 4.1 137
SUCKER CREEK 8880 3.3 3.4 97 5.2 4.7 111
TIE CREEK 6870 .8 1.3 62 4.2 3.5 120
----- -----
Basin wide percent of average 84 108
BELLE FOURCHE
BLIND PARK 6890 1.6 2.1 76 3.7 3.8 97
COLE CANYON 5910 .5 -M * 2.0 -M *
NORTH RAPID CREEK 6130 2.0 -M * 3.0 3.3 91
----- -----
Basin wide percent of average 76* 94
UPPER N. PLATTE RIVER
COLUMBINE 9400 4.0 5.5 73 5.8 6.7 87
DIVIDE PEAK 8800 4.3 5.5 78 5.0 6.5 77
ELK RIVER 8700 2.8 3.5 80 4.6 5.5 84
JOE WRIGHT 10120 5.8 6.6 88 6.0 8.0 75
NORTH FRENCH CREEK 10100 4.6 8.4 55 4.3 7.7 56
OLD BATTLE 10000 6.5 9.6 68 8.2 9.7 85
SAGE CREEK BASIN 7850 2.8 -M * 4.9 -M *
SOUTH BRUSH CREEK 8400 2.1 3.1 68 3.1 5.4 57
TOWER 10500 8.8 13.4 66 9.6 11.1 86
WEBBER SPRINGS 9200 4.7 7.1 66 6.2 8.1 77
WILLOW CREEK PASS 9540 2.0 3.8 53 3.1 4.5 69
----- -----
Basin wide percent of average 69 76
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 3.3 6.5 51 4.3 6.5 66
CASPER MTN. 7900 3.2 4.8 67 5.1 5.4 94
DEADMAN HILL 10220 2.6 5.3 49 3.6 5.5 65
DEER PARK 9700 5.3 4.7 113 6.2 -M *
LAPRELE CREEK 8320 1.3 3.4 38 4.1 4.4 93
RENO HILL 8400 2.8 4.5 62 4.4 5.2 85
ROACH 9700 2.1 4.6 46 3.5 5.5 64
SAND LAKE 10080 5.8 9.8 59 6.1 7.5 81
SOUTH PASS 9040 3.6 5.3 68 4.8 5.7 84
WINDY PEAK 7840 1.0 2.4 42 3.7 3.9 95
----- -----
Basin wide percent of average 60 80
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.8 2.0 140 -M 4.6 *
DIVIDE PEAK 8800 4.3 5.5 78 5.0 6.5 77
OLD BATTLE 10000 6.5 9.6 68 8.2 9.7 85
SANDSTONE RS 8150 2.5 2.6 96 5.6 5.7 98
WHISKEY PARK 8950 5.4 6.5 83 7.5 8.1 93
----- -----
Basin wide percent of average 82 88
UPPER GREEN RIVER
BIG SANDY OPENING 9100 4.9 4.3 114 4.3 4.4 98
BLIND BULL SUM 8650 7.4 7.7 96 7.5 6.7 112
EAST RIM DIVIDE 7930 1.9 3.5 54 3.9 3.6 108
ELKHART PARK G.S. 9400 3.8 3.8 100 4.4 4.5 98
GROS VENTRE SUMMIT 8775 -M 4.2 * -M 4.4 *
KENDALL R.S. 7740 2.5 3.5 71 4.9 4.3 114
LOOMIS PARK 8240 4.7 4.8 98 5.7 5.1 112
NEW FORK LAKE 8340 2.6 3.1 84 3.7 4.0 92
SNIDER BASIN 8250 1.2 3.9 31 4.5 4.7 96
SPRING CREEK DIVIDE 9000 5.4 7.4 73 7.7 7.7 100
TRIPLE PEAK 8500 6.4 6.9 93 8.4 6.8 124
----- -----
Basin wide percent of average 83 106
LOWER GREEN RIVER
HAMS FORK 7840 2.5 2.8 89 3.3 3.7 89
HEWINTA 9500 2.2 2.4 92 5.1 5.0 102
HICKERSON PARK 9150 1.1 1.6 69 3.4 3.3 103
HOLE-IN-ROCK 9150 1.3 1.6 81 3.4 3.0 113
INDIAN CREEK 9425 6.3 7.3 86 6.2 7.3 85
KELLEY R.S. 8180 3.6 4.5 80 5.6 6.0 93
STEEL CREEK PARK 10100 3.3 4.3 77 4.2 5.3 79
----- -----
Basin wide percent of average 83 93
UPPER BEAR RIVER
BUG LAKE 7950 2.7 4.5 60 5.8 5.9 98
HAYDEN FORK 9400 4.2 3.4 124 7.3 6.4 114
KELLEY R.S. 8180 3.6 4.5 80 5.6 6.0 93
LILY LAKE 9050 2.7 3.1 87 5.6 5.9 95
MONTE CRISTO 8960 5.1 5.7 89 7.3 7.6 96
SALT RIVER SUMMIT 7600 2.8 2.9 97 5.0 5.3 94
TRIAL LAKE 9960 5.9 6.0 98 8.5 7.0 121
----- -----
Basin wide percent of average 90 102
-----------------------------------------------------------------------------
-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.