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: JANUARY 23 , 2010
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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 5.8 11.5 50 7.9 13.7 58
COTTONWOOD CREEK 7670 7.9 13.0 61 11.8 17.4 68
GRAND TARGHEE 9260 20.2 -M * 15.8 -M *
GRANITE CREEK 6770 5.3 11.0 48 7.7 12.6 61
GRASSY LAKE 7265 12.3 20.6 60 14.6 23.1 63
GROS VENTRE SUMMIT 8750 4.8 8.8 55 4.7 8.0 59
GUNSIGHT PASS 9820 4.6 -M * 5.9 -M *
LEWIS LAKE DIVIDE 7850 10.2 20.7 49 13.3 22.9 58
PHILLIPS BENCH 8200 9.7 16.8 58 11.5 18.0 64
SALT RIVER SUMMIT 7760 4.5 8.1 56 6.6 11.7 56
SNAKE RIVER STATION 6920 5.9 11.2 53 10.1 14.3 71
SPRING CREEK DIVIDE 9000 9.5 16.0 59 9.9 17.0 58
THUMB DIVIDE 7980 5.8 10.6 55 8.7 11.8 74
TOGWOTEE PASS 9580 10.0 15.4 65 10.1 15.6 65
TWO OCEAN PLATEAU 9240 13.0 17.4 75 10.7 17.1 63
WILLOW CREEK 8380 12.1 18.6 65 15.7 20.2 78
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Basin wide percent of average 58 64
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 9.5 15.1 63 8.5 12.9 66
BLACK BEAR 8170 16.7 23.8 70 17.1 23.8 72
CANYON 7870 5.7 8.2 70 7.2 10.0 72
FISHER CREEK 9100 15.9 22.0 72 15.6 22.7 69
MADISON PLATEAU 7750 10.3 15.1 68 13.4 16.0 84
NORTHEAST ENTRANCE 7350 3.6 7.0 51 6.3 8.2 77
PARKER PEAK 9400 11.5 13.7 84 8.3 10.3 81
SYLVAN LAKE 8420 8.1 13.9 58 10.2 13.7 74
THUMB DIVIDE 7980 5.8 10.6 55 8.7 11.8 74
TWO OCEAN PLATEAU 9240 13.0 17.4 75 10.7 17.1 63
WHISKEY CREEK 6800 6.2 10.3 60 8.6 12.8 67
WHITE MILL 8700 11.4 14.9 77 10.6 16.7 63
WOLVERINE 7650 4.7 7.9 59 4.8 8.6 56
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Basin wide percent of average 68 70
WIND RIVER
BURROUGHS CREEK 8750 -M 9.3 * 4.3 10.5 41
COLD SPRINGS 9630 3.6 5.7 63 4.6 6.7 69
DEER PARK 9700 8.8 11.1 79 10.1 13.5 75
HOBBS PARK 10100 7.8 9.3 84 7.3 7.7 95
LITTLE WARM 9370 4.0 7.2 56 4.6 8.5 54
SOUTH PASS 9040 7.7 10.5 73 8.5 11.3 75
ST. LAWRENCE ALT 8620 3.2 4.6 70 5.1 5.3 96
TOGWOTEE PASS 9580 10.0 15.4 65 10.1 15.6 65
TOWNSEND CREEK 8700 5.5 5.3 104 7.0 6.9 101
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Basin wide percent of average 73 72
BIGHORN BASIN
BALD MTN. 9380 7.5 12.5 60 5.9 11.0 54
BEAR TRAP MEADOW 8200 2.6 3.3 79 3.3 5.2 63
BLACKWATER 9780 10.7 15.2 70 9.8 13.2 74
BONE SPRINGS DIV 9350 6.7 9.9 68 5.7 9.0 63
EVENING STAR 9200 12.2 18.2 67 13.4 16.4 82
GRAVE SPRINGS 8550 4.5 5.3 85 5.6 6.1 92
KIRWIN 9550 4.9 7.3 67 4.4 7.2 61
MARQUETTE 8760 3.5 5.7 61 4.3 5.9 73
MIDDLE POWDER 7760 5.4 6.7 81 5.3 7.9 67
OWL CREEK 8975 3.7 3.2 116 2.9 3.5 83
POWDER RIVER PASS 9480 4.5 6.7 67 4.8 7.7 62
SHELL CREEK 9580 7.1 9.2 77 6.1 8.6 71
SYLVAN LAKE 8420 8.1 13.9 58 10.2 13.7 74
SYLVAN ROAD 7120 4.1 8.2 50 7.7 12.5 62
TIMBER CREEK 7950 1.8 3.5 51 3.3 4.3 77
YOUNTS PEAK 8350 6.5 10.9 60 5.3 10.6 50
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Basin wide percent of average 67 69
SHOSHONE RIVER
BLACKWATER 9780 10.7 15.2 70 9.8 13.2 74
EVENING STAR 9200 12.2 18.2 67 13.4 16.4 82
KIRWIN 9550 4.9 7.3 67 4.4 7.2 61
MARQUETTE 8760 3.5 5.7 61 4.3 5.9 73
SYLVAN LAKE 8420 8.1 13.9 58 10.2 13.7 74
SYLVAN ROAD 7120 4.1 8.2 50 7.7 12.5 62
YOUNTS PEAK 8350 6.5 10.9 60 5.3 10.6 50
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Basin wide percent of average 63 69
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.6 3.3 79 3.3 5.2 63
BIG GOOSE 7990 4.5 5.5 82 5.7 5.1 112
BONE SPRINGS DIV 9350 6.7 9.9 68 5.7 9.0 63
BURGESS JUNCTION 7880 6.0 6.9 87 6.1 7.4 82
CLOUD PEAK RESERVOIR 9860 6.7 7.4 91 5.6 7.7 73
DOME LAKE 8880 4.6 7.5 61 6.3 8.2 77
GRAVE SPRINGS 8550 4.5 5.3 85 5.6 6.1 92
HANSEN SAWMILL 8360 2.8 3.9 72 3.7 5.0 74
MIDDLE POWDER 7760 5.4 6.7 81 5.3 7.9 67
POWDER RIVER PASS 9480 4.5 6.7 67 4.8 7.7 62
SUCKER CREEK 8880 6.5 6.7 97 7.1 8.2 87
TIE CREEK 6870 .8 3.7 22 5.7 6.3 90
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Basin wide percent of average 76 77
BELLE FOURCHE
BLIND PARK 6890 3.6 4.9 73 6.9 7.4 93
COLE CANYON 5910 2.8 4.2 67 6.6 4.5 147
NORTH RAPID CREEK 6130 5.4 4.5 120 6.9 6.0 115
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Basin wide percent of average 87 114
UPPER N. PLATTE RIVER
COLUMBINE 9160 9.7 14.5 67 12.0 15.3 78
DIVIDE PEAK 8880 10.1 12.0 84 12.9 12.7 102
ELK RIVER 8700 8.5 10.8 79 11.0 11.7 94
JOE WRIGHT 10120 10.1 12.7 80 11.5 15.0 77
NORTH FRENCH CREEK 10130 19.3 17.1 113 19.5 15.2 128
OLD BATTLE 10000 17.5 18.4 95 19.9 20.7 96
SAGE CREEK BASIN 7850 6.6 7.0 94 7.6 7.4 103
SOUTH BRUSH CREEK 8440 7.4 6.7 110 11.3 10.0 113
TOWER 10500 18.8 27.3 69 18.4 23.4 79
WEBBER SPRINGS 9250 11.7 14.7 80 15.3 16.8 91
WILLOW CREEK PASS 9540 4.0 6.9 58 6.4 7.8 82
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Basin wide percent of average 84 93
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 12.0 14.1 85 12.7 13.2 96
CASPER MTN. 7900 5.8 8.4 69 7.0 8.4 83
DEADMAN HILL 10220 10.5 9.7 108 10.1 9.8 103
DEER PARK 9700 8.8 11.1 79 10.1 13.5 75
LAPRELE CREEK 8375 4.6 6.7 69 6.9 7.6 91
RENO HILL 8400 7.5 7.9 95 8.8 8.8 100
ROACH 9700 9.8 9.9 99 12.3 10.8 114
SAND LAKE 10050 17.1 18.5 92 17.0 14.8 115
SOUTH PASS 9040 7.7 10.5 73 8.5 11.3 75
WINDY PEAK 7900 3.9 4.2 93 6.3 6.6 95
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Basin wide percent of average 87 95
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 6.9 74 7.5 9.2 82
DIVIDE PEAK 8880 10.1 12.0 84 12.9 12.7 102
OLD BATTLE 10000 17.5 18.4 95 19.9 20.7 96
SANDSTONE RS 8150 4.8 8.5 56 8.5 11.6 73
WHISKEY PARK 8950 12.5 16.4 76 15.6 17.9 87
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Basin wide percent of average 80 89
UPPER GREEN RIVER
BIG SANDY OPENING 9080 5.7 8.8 65 5.6 8.3 67
BLIND BULL SUM 8650 9.1 17.0 54 7.1 14.3 50
EAST RIM DIVIDE 7930 3.1 7.7 40 4.7 7.5 63
ELKHART PARK G.S. 9400 5.0 8.1 62 5.5 8.3 66
GROS VENTRE SUMMIT 8750 4.8 8.8 55 4.7 8.0 59
GUNSIGHT PASS 9820 4.6 -M * 5.9 -M *
KENDALL R.S. 7740 3.5 9.0 39 5.5 9.0 61
LOOMIS PARK 8240 4.6 10.3 45 6.4 10.9 59
NEW FORK LAKE 8340 2.9 7.0 41 4.0 7.4 54
SNIDER BASIN 8060 5.0 8.9 56 6.2 10.3 60
SPRING CREEK DIVIDE 9000 9.5 16.0 59 9.9 17.0 58
TRIPLE PEAK 8500 10.4 15.3 68 11.2 14.9 75
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Basin wide percent of average 54 61
LOWER GREEN RIVER
HAMS FORK 7840 3.1 7.5 41 5.5 7.7 71
HEWINTA 9519 3.3 5.9 56 5.6 8.6 65
HICKERSON PARK 9145 3.4 4.0 85 5.4 4.9 110
HOLE-IN-ROCK 9150 2.9 3.7 78 4.9 4.5 109
INDIAN CREEK 9425 10.0 16.2 62 9.2 15.6 59
KELLEY R.S. 8180 5.2 9.7 54 7.3 12.9 57
STEEL CREEK PARK 10200 5.7 8.5 67 7.3 9.4 78
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Basin wide percent of average 61 71
UPPER BEAR RIVER
BUG LAKE 7950 4.5 11.8 38 8.3 11.9 70
HAYDEN FORK 9212 6.5 8.8 74 9.4 12.6 75
KELLEY R.S. 8180 5.2 9.7 54 7.3 12.9 57
LILY LAKE 9156 5.6 7.4 76 7.1 10.7 66
MONTE CRISTO 8960 9.5 16.1 59 10.6 15.5 68
SALT RIVER SUMMIT 7760 4.5 8.1 56 6.6 11.7 56
TRIAL LAKE 9992 7.6 14.1 54 7.8 14.6 53
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Basin wide percent of average 57 64
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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.