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 FRIDAY: FEBRUARY 18 , 2005
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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 10.2 14.7 69 11.8 17.1 69
COTTONWOOD CREEK 7600 12.7 16.5 77 14.9 21.3 70
GRANITE CREEK 6770 10.1 14.6 69 12.6 15.9 79
GRASSY LAKE 7265 18.9 26.9 70 20.1 28.6 70
GROS VENTRE SUMMIT 8750 8.7 10.6 82 8.6 10.0 86
LEWIS LAKE DIVIDE 7850 17.7 27.1 65 17.7 28.9 61
PHILLIPS BENCH 8200 17.4 21.7 80 17.9 22.6 79
SALT RIVER SUMMIT 7600 9.4 11.1 85 12.7 14.5 88
SNAKE RIVER STATION 6920 9.4 15.0 63 11.7 18.0 65
SPRING CREEK DIVIDE 9000 18.2 20.2 90 17.7 20.9 85
THUMB DIVIDE 7980 10.6 13.9 76 10.4 14.7 71
TOGWOTEE PASS 9580 12.6 19.2 66 12.7 19.2 66
TWO OCEAN PLATEAU 9240 17.6 21.6 81 14.6 21.5 68
WILLOW CREEK 8450 17.8 23.3 76 20.6 25.0 82
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Basin wide percent of average 75 73
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 11.0 18.5 59 9.8 15.9 62
BLACK BEAR 8170 26.3 29.9 88 23.7 30.5 78
CANYON 8090 7.1 10.4 68 8.5 12.1 70
FISHER CREEK 9100 18.9 27.2 69 17.5 28.2 62
MADISON PLATEAU 7750 15.2 19.0 80 16.7 20.3 82
NORTHEAST ENTRANCE 7350 4.2 9.0 47 5.5 10.1 54
PARKER PEAK 9400 11.6 16.8 69 9.6 12.7 76
SYLVAN LAKE 8420 11.2 17.1 65 12.9 16.7 77
THUMB DIVIDE 7980 10.6 13.9 76 10.4 14.7 71
TWO OCEAN PLATEAU 9240 17.6 21.6 81 14.6 21.5 68
WHISKEY CREEK 6800 10.6 13.1 81 13.5 16.0 84
WHITE MILL 8700 12.2 18.6 66 11.5 21.0 55
WOLVERINE 7650 5.9 9.9 60 5.8 10.4 56
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Basin wide percent of average 72 70
WIND RIVER
BURROUGHS CREEK 8750 7.4 11.6 64 7.4 12.8 58
COLD SPRINGS 9630 6.0 6.6 91 6.6 7.9 84
DEER PARK 9700 19.0 13.8 138 21.0 16.5 127
HOBBS PARK 10100 12.1 11.0 110 10.8 9.2 117
LITTLE WARM 9370 6.3 8.7 72 6.9 10.2 68
SOUTH PASS 9040 16.6 12.8 130 17.2 13.9 124
ST. LAWRENCE ALT 8620 5.6 5.4 104 6.7 6.5 103
TOGWOTEE PASS 9580 12.6 19.2 66 12.7 19.2 66
TOWNSEND CREEK 8700 8.2 6.4 128 11.4 8.3 137
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Basin wide percent of average 98 96
BIGHORN BASIN
BALD MTN. 9380 11.4 14.8 77 10.5 13.2 80
BEAR TRAP MEADOW 8200 2.9 4.0 72 5.1 6.0 85
BLACKWATER 9780 10.9 18.8 58 10.3 16.0 64
BONE SPRINGS DIV 9350 10.2 12.0 85 9.7 10.8 90
EVENING STAR 9200 13.1 22.9 57 14.5 20.2 72
GRAVE SPRINGS 8550 4.4 6.7 66 6.2 7.2 86
KIRWIN 9550 5.2 8.5 61 5.8 8.6 67
MARQUETTE 8760 2.6 6.4 41 4.4 7.0 63
MIDDLE POWDER 7760 4.5 8.3 54 5.4 9.1 59
OWL CREEK 8975 2.7 3.8 71 2.9 4.1 71
POWDER RIVER PASS 9480 8.2 8.1 101 9.1 9.3 98
SHELL CREEK 9580 9.9 10.9 91 8.8 10.2 86
SYLVAN LAKE 8420 11.2 17.1 65 12.9 16.7 77
SYLVAN ROAD 7120 6.8 10.5 65 9.4 14.7 64
TIMBER CREEK 7950 1.4 4.0 35 2.3 5.0 46
YOUNTS PEAK 8350 8.0 13.5 59 8.0 12.7 63
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Basin wide percent of average 67 73
SHOSHONE RIVER
BLACKWATER 9780 10.9 18.8 58 10.3 16.0 64
EVENING STAR 9200 13.1 22.9 57 14.5 20.2 72
KIRWIN 9550 5.2 8.5 61 5.8 8.6 67
MARQUETTE 8760 2.6 6.4 41 4.4 7.0 63
SYLVAN LAKE 8420 11.2 17.1 65 12.9 16.7 77
SYLVAN ROAD 7120 6.8 10.5 65 9.4 14.7 64
YOUNTS PEAK 8350 8.0 13.5 59 8.0 12.7 63
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Basin wide percent of average 59 68
POWDER-TONGUE
BEAR TRAP MEADOW 8200 2.9 4.0 72 5.1 6.0 85
BIG GOOSE 7990 5.1 7.0 73 6.3 6.4 98
BONE SPRINGS DIV 9350 10.2 12.0 85 9.7 10.8 90
BURGESS JUNCTION 7880 5.7 8.3 69 7.0 8.9 79
CLOUD PEAK RESERVOIR 9860 9.7 9.1 107 8.0 9.2 87
DOME LAKE 8880 7.5 8.9 84 8.2 9.6 85
GRAVE SPRINGS 8550 4.4 6.7 66 6.2 7.2 86
HANSEN SAWMILL 8360 4.3 4.7 91 5.4 5.9 92
MIDDLE POWDER 7760 4.5 8.3 54 5.4 9.1 59
POWDER RIVER PASS 9480 8.2 8.1 101 9.1 9.3 98
SUCKER CREEK 8880 7.7 8.3 93 8.9 9.8 91
TIE CREEK 6870 .5 4.6 11 5.5 7.5 73
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Basin wide percent of average 79 85
BELLE FOURCHE
BLIND PARK 6890 3.5 6.2 56 5.7 8.7 66
COLE CANYON 5910 1.8 4.6 39 4.6 -M *
NORTH RAPID CREEK 6130 2.2 6.1 36 4.3 7.0 61
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Basin wide percent of average 44 64
UPPER N. PLATTE RIVER
COLUMBINE 9160 14.5 19.9 73 15.7 19.2 82
DIVIDE PEAK 8860 17.0 14.4 118 19.5 15.7 124
ELK RIVER 8700 16.8 14.6 115 17.0 14.8 115
JOE WRIGHT 10120 14.0 15.9 88 14.2 18.6 76
NORTH FRENCH CREEK 10130 18.7 20.8 90 18.2 18.7 97
OLD BATTLE 9920 27.6 23.7 116 29.4 26.1 113
SAGE CREEK BASIN 7850 12.1 8.4 144 13.9 9.1 153
SOUTH BRUSH CREEK 8440 8.1 8.9 91 9.6 12.4 77
TOWER 10500 28.1 34.6 81 27.4 29.3 94
WEBBER SPRINGS 9250 19.5 19.0 103 22.3 20.5 109
WILLOW CREEK PASS 9540 11.2 8.7 129 10.2 9.6 106
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Basin wide percent of average 99 102
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 13.2 17.5 75 12.8 16.2 79
CASPER MTN. 7850 7.9 10.4 76 9.0 10.2 88
DEADMAN HILL 10220 11.9 12.0 99 9.8 12.2 80
DEER PARK 9700 19.0 13.8 138 21.0 16.5 127
LAPRELE CREEK 8375 5.0 8.2 61 7.0 9.3 75
RENO HILL 8500 6.4 9.5 67 6.9 10.6 65
ROACH 9700 11.6 12.8 91 14.3 13.6 105
SAND LAKE 10050 17.2 22.8 75 15.6 18.0 87
SOUTH PASS 9040 16.6 12.8 130 17.2 13.9 124
WINDY PEAK 7900 4.5 5.5 82 6.2 7.9 78
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Basin wide percent of average 90 93
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.0 8.9 112 12.0 11.4 105
DIVIDE PEAK 8860 17.0 14.4 118 19.5 15.7 124
OLD BATTLE 9920 27.6 23.7 116 29.4 26.1 113
SANDSTONE RS 8150 9.5 11.4 83 15.6 14.4 108
WHISKEY PARK 8950 19.6 21.7 90 21.0 21.8 96
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Basin wide percent of average 104 109
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.6 11.1 114 12.2 10.4 117
BLIND BULL SUM 8900 14.8 21.1 70 12.9 17.6 73
EAST RIM DIVIDE 7930 6.4 10.0 64 7.4 9.4 79
ELKHART PARK G.S. 9400 8.7 10.2 85 9.9 10.1 98
GROS VENTRE SUMMIT 8750 8.7 10.6 82 8.6 10.0 86
KENDALL R.S. 7740 8.8 11.3 78 9.8 11.4 86
LOOMIS PARK 8240 10.4 13.1 79 11.0 13.6 81
NEW FORK LAKE 8340 7.6 8.8 86 7.1 8.9 80
SNIDER BASIN 8060 11.0 11.4 96 11.5 12.7 91
SPRING CREEK DIVIDE 9000 18.2 20.2 90 17.7 20.9 85
TRIPLE PEAK 8500 14.0 19.1 73 15.4 18.9 81
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Basin wide percent of average 83 86
LOWER GREEN RIVER
HAMS FORK 7840 9.5 9.9 96 10.6 9.6 110
HEWINTA 9500 7.5 8.1 93 10.0 10.7 93
HICKERSON PARK 9100 6.8 5.2 131 9.0 5.8 155
HOLE-IN-ROCK 9150 5.6 5.1 110 8.3 5.4 154
INDIAN CREEK 9425 21.4 20.3 105 18.9 19.4 97
KELLEY R.S. 8180 13.0 12.6 103 14.8 15.9 93
STEEL CREEK PARK 10100 12.1 11.3 107 12.6 11.8 107
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Basin wide percent of average 105 107
UPPER BEAR RIVER
BUG LAKE 7950 16.8 15.5 108 18.8 14.9 126
HAYDEN FORK 9100 14.9 11.8 126 20.0 15.7 127
KELLEY R.S. 8180 13.0 12.6 103 14.8 15.9 93
LILY LAKE 9050 12.5 9.8 128 14.8 13.2 112
MONTE CRISTO 8960 23.7 22.1 107 23.8 19.4 123
SALT RIVER SUMMIT 7600 9.4 11.1 85 12.7 14.5 88
TRIAL LAKE 9960 24.2 18.6 130 25.4 18.7 136
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Basin wide percent of average 113 116
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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 1971-2000.
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.