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 23 , 2008
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 3.8 7.0 54 6.6 9.2 72
COTTONWOOD CREEK 7670 8.6 8.3 104 11.8 11.8 100
GRAND TARGHEE 9260 14.8 -M * 13.8 -M *
GRANITE CREEK 6770 -M 6.4 * -M 8.3 *
GRASSY LAKE 7265 8.7 12.6 69 12.5 15.0 83
GROS VENTRE SUMMIT 8750 5.0 6.0 83 6.0 5.8 103
GUNSIGHT PASS 9820 4.2 -M * 5.5 -M *
LEWIS LAKE DIVIDE 7850 7.6 12.6 60 11.9 15.3 78
PHILLIPS BENCH 8200 7.8 10.9 72 10.4 11.7 89
SALT RIVER SUMMIT 7760 3.2 4.6 70 5.1 7.8 65
SNAKE RIVER STATION 6920 3.7 6.8 54 7.6 9.7 78
SPRING CREEK DIVIDE 9000 7.3 11.0 66 8.9 11.3 79
THUMB DIVIDE 7980 5.0 6.6 76 7.7 8.0 96
TOGWOTEE PASS 9580 9.9 10.3 96 11.5 10.6 108
TWO OCEAN PLATEAU 9240 11.6 12.0 97 9.1 12.0 76
WILLOW CREEK 8380 10.4 12.4 84 14.9 13.7 109
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Basin wide percent of average 76 87
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 6.8 10.1 67 6.4 8.9 72
BLACK BEAR 8170 11.3 15.1 75 14.1 15.5 91
CANYON 7870 4.2 5.2 81 5.1 6.9 74
FISHER CREEK 9100 11.5 14.4 80 11.8 15.0 79
MADISON PLATEAU 7750 6.5 9.8 66 8.8 11.0 80
NORTHEAST ENTRANCE 7350 2.2 4.3 51 5.4 5.8 93
PARKER PEAK 9400 9.0 9.3 97 7.2 7.5 96
SYLVAN LAKE 8420 6.3 9.4 67 8.4 10.0 84
THUMB DIVIDE 7980 5.0 6.6 76 7.7 8.0 96
TWO OCEAN PLATEAU 9240 11.6 12.0 97 9.1 12.0 76
WHISKEY CREEK 6800 4.5 6.5 69 7.4 8.8 84
WHITE MILL 8700 8.0 10.0 80 8.5 11.4 75
WOLVERINE 7650 2.9 4.9 59 4.3 6.4 67
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Basin wide percent of average 76 82
WIND RIVER
BURROUGHS CREEK 8750 5.6 5.9 95 6.3 7.1 89
COLD SPRINGS 9630 2.9 4.2 69 4.5 5.3 85
DEER PARK 9700 5.1 6.0 85 7.2 9.8 73
HOBBS PARK 10100 4.8 7.1 68 5.0 5.9 85
LITTLE WARM 9370 4.2 4.7 89 5.8 6.1 95
SOUTH PASS 9040 5.0 7.4 68 7.3 8.4 87
ST. LAWRENCE ALT 8620 1.0 3.5 29 3.4 4.3 79
TOGWOTEE PASS 9580 9.9 10.3 96 11.5 10.6 108
TOWNSEND CREEK 8700 2.8 4.0 70 5.1 5.6 91
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Basin wide percent of average 78 89
BIGHORN BASIN
BALD MTN. 9380 9.4 8.7 108 8.2 7.5 109
BEAR TRAP MEADOW 8200 2.9 2.3 126 4.5 4.2 107
BLACKWATER 9780 7.9 10.9 72 7.5 9.9 76
BONE SPRINGS DIV 9350 8.4 7.1 118 7.0 6.6 106
EVENING STAR 9200 7.9 12.2 65 10.1 11.6 87
GRAVE SPRINGS 8550 2.2 3.7 59 4.0 4.5 89
KIRWIN 9550 4.5 5.4 83 4.8 5.4 89
MARQUETTE 8760 2.0 4.6 43 4.4 5.0 88
MIDDLE POWDER 7760 3.0 5.1 59 4.4 6.3 70
OWL CREEK 8975 2.8 2.4 117 2.9 2.7 107
POWDER RIVER PASS 9480 5.6 4.7 119 6.5 5.4 120
SHELL CREEK 9580 8.1 6.7 121 7.9 6.0 132
SYLVAN LAKE 8420 6.3 9.4 67 8.4 10.0 84
SYLVAN ROAD 7120 4.1 5.4 76 6.6 9.3 71
TIMBER CREEK 7950 1.9 2.9 66 4.6 3.5 131
YOUNTS PEAK 8350 6.0 6.9 87 6.2 7.3 85
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Basin wide percent of average 84 93
SHOSHONE RIVER
BLACKWATER 9780 7.9 10.9 72 7.5 9.9 76
EVENING STAR 9200 7.9 12.2 65 10.1 11.6 87
KIRWIN 9550 4.5 5.4 83 4.8 5.4 89
MARQUETTE 8760 2.0 4.6 43 4.4 5.0 88
SYLVAN LAKE 8420 6.3 9.4 67 8.4 10.0 84
SYLVAN ROAD 7120 4.1 5.4 76 6.6 9.3 71
YOUNTS PEAK 8350 6.0 6.9 87 6.2 7.3 85
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Basin wide percent of average 71 82
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.9 2.3 126 4.5 4.2 107
BIG GOOSE 7990 3.3 3.8 87 5.6 4.2 133
BONE SPRINGS DIV 9350 8.4 7.1 118 7.0 6.6 106
BURGESS JUNCTION 7880 5.2 5.0 104 6.2 5.6 111
CLOUD PEAK RESERVOIR 9860 7.2 5.1 141 8.0 6.0 133
DOME LAKE 8880 5.5 5.5 100 7.2 6.3 114
GRAVE SPRINGS 8550 2.2 3.7 59 4.0 4.5 89
HANSEN SAWMILL 8360 2.4 2.8 86 5.1 4.0 127
MIDDLE POWDER 7760 3.0 5.1 59 4.4 6.3 70
POWDER RIVER PASS 9480 5.6 4.7 119 6.5 5.4 120
SUCKER CREEK 8880 6.7 4.7 143 8.6 6.1 141
TIE CREEK 6870 1.2 2.2 55 7.1 4.7 151
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Basin wide percent of average 103 116
BELLE FOURCHE
BLIND PARK 6890 4.3 2.9 148 7.8 5.7 137
COLE CANYON 5910 2.9 2.9 100 6.9 3.6 192
NORTH RAPID CREEK 6130 4.5 2.8 161 7.6 4.9 155
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Basin wide percent of average 136 157
UPPER N. PLATTE RIVER
COLUMBINE 9160 7.2 8.4 86 7.8 10.0 78
DIVIDE PEAK 8880 6.6 8.0 82 8.6 8.9 97
ELK RIVER 8700 6.6 5.9 112 7.9 7.7 103
JOE WRIGHT 10120 10.1 8.6 117 12.2 10.7 114
NORTH FRENCH CREEK 10130 11.0 11.8 93 10.8 10.7 101
OLD BATTLE 10000 11.4 13.1 87 14.0 14.0 100
SAGE CREEK BASIN 7850 3.2 4.6 70 5.0 5.2 96
SOUTH BRUSH CREEK 8440 5.4 4.5 120 7.0 7.0 100
TOWER 10500 11.9 18.3 65 13.9 15.7 89
WEBBER SPRINGS 9250 8.6 10.2 84 11.1 11.5 97
WILLOW CREEK PASS 9540 4.8 5.0 96 5.5 5.9 93
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Basin wide percent of average 88 97
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 7.0 9.3 75 7.3 9.0 81
CASPER MTN. 7900 3.3 6.3 52 6.0 6.7 90
DEADMAN HILL 10220 6.0 6.8 88 6.5 7.1 92
DEER PARK 9700 5.1 6.0 85 7.2 9.8 73
LAPRELE CREEK 8375 2.5 4.7 53 3.4 5.6 61
RENO HILL 8400 3.7 6.0 62 5.0 6.6 76
ROACH 9700 6.1 6.4 95 7.3 7.5 97
SAND LAKE 10050 10.0 13.4 75 8.9 10.3 86
SOUTH PASS 9040 5.0 7.4 68 7.3 8.4 87
WINDY PEAK 7900 2.2 3.2 69 3.0 5.0 60
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Basin wide percent of average 73 81
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.2 3.2 100 6.1 6.3 97
DIVIDE PEAK 8880 6.6 8.0 82 8.6 8.9 97
OLD BATTLE 10000 11.4 13.1 87 14.0 14.0 100
SANDSTONE RS 8150 4.6 4.3 107 7.3 7.8 94
WHISKEY PARK 8950 -M 9.4 * -M 11.6 *
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Basin wide percent of average 90 97
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.0 6.1 66 4.5 5.9 76
BLIND BULL SUM 8650 7.6 11.5 66 7.8 9.8 80
EAST RIM DIVIDE 7930 1.7 5.2 33 4.9 5.1 96
ELKHART PARK G.S. 9400 4.0 5.5 73 5.7 6.0 95
GROS VENTRE SUMMIT 8750 5.0 6.0 83 6.0 5.8 103
GUNSIGHT PASS 9820 4.2 -M * 5.5 -M *
KENDALL R.S. 7740 3.2 5.7 56 5.7 6.0 95
LOOMIS PARK 8240 4.5 7.0 64 6.9 7.3 95
NEW FORK LAKE 8340 4.1 4.7 87 4.3 5.3 81
SNIDER BASIN 8060 3.6 6.0 60 5.0 6.9 72
SPRING CREEK DIVIDE 9000 7.3 11.0 66 8.9 11.3 79
TRIPLE PEAK 8500 7.9 10.3 77 9.5 9.8 97
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Basin wide percent of average 67 87
LOWER GREEN RIVER
HAMS FORK 7840 1.8 4.6 39 4.0 5.1 78
HEWINTA 9519 1.6 3.5 46 4.7 6.5 72
HICKERSON PARK 9145 .5 2.5 20 3.0 3.9 77
HOLE-IN-ROCK 9150 1.1 2.3 48 3.3 3.6 92
INDIAN CREEK 9425 6.8 10.9 62 7.3 10.6 69
KELLEY R.S. 8180 4.6 6.7 69 6.1 8.8 69
STEEL CREEK PARK 10200 2.8 5.9 47 6.1 6.9 88
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Basin wide percent of average 53 76
UPPER BEAR RIVER
BUG LAKE 7950 2.6 6.9 38 5.7 8.2 70
HAYDEN FORK 9212 5.3 5.3 100 7.7 8.9 87
KELLEY R.S. 8180 4.6 6.7 69 6.1 8.8 69
LILY LAKE 9156 4.0 4.7 85 6.1 7.8 78
MONTE CRISTO 8960 6.8 9.2 74 8.5 10.7 79
SALT RIVER SUMMIT 7760 3.2 4.6 70 5.1 7.8 65
TRIAL LAKE 9992 7.4 9.0 82 7.9 9.9 80
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Basin wide percent of average 73 76
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-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.
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-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.