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: MARCH 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 11.2 17.4 64 13.4 20.3 66
COTTONWOOD CREEK 7600 15.9 21.9 73 18.1 25.6 71
GRANITE CREEK 6770 11.0 18.0 61 13.9 18.9 74
GRASSY LAKE 7265 21.5 33.4 64 22.1 34.0 65
GROS VENTRE SUMMIT 8750 9.2 13.2 70 9.2 12.0 77
LEWIS LAKE DIVIDE 7850 19.5 33.3 59 19.9 34.6 58
PHILLIPS BENCH 8200 20.0 27.0 74 19.9 27.2 73
SALT RIVER SUMMIT 7600 10.9 13.6 80 14.3 17.6 81
SNAKE RIVER STATION 6920 10.4 18.5 56 12.8 21.1 61
SPRING CREEK DIVIDE 9000 21.3 24.8 86 20.2 24.9 81
THUMB DIVIDE 7980 11.4 17.7 64 11.1 17.7 63
TOGWOTEE PASS 9580 14.7 23.1 64 14.8 23.0 64
TWO OCEAN PLATEAU 9240 20.2 26.1 77 16.6 25.9 64
WILLOW CREEK 8450 22.1 28.5 78 24.7 30.1 82
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Basin wide percent of average 69 69
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 13.3 22.2 60 12.0 18.9 63
BLACK BEAR 8170 28.3 37.0 76 26.3 37.5 70
CANYON 8090 8.1 12.9 63 9.4 14.4 65
FISHER CREEK 9100 21.9 32.8 67 20.8 34.0 61
MADISON PLATEAU 7750 15.9 23.6 67 17.5 24.8 71
NORTHEAST ENTRANCE 7350 5.1 10.7 48 6.6 11.9 55
PARKER PEAK 9400 13.6 20.3 67 11.3 15.2 74
SYLVAN LAKE 8420 12.8 21.0 61 14.6 19.7 74
THUMB DIVIDE 7980 11.4 17.7 64 11.1 17.7 63
TWO OCEAN PLATEAU 9240 20.2 26.1 77 16.6 25.9 64
WHISKEY CREEK 6800 -M 16.2 * -M 19.5 *
WHITE MILL 8700 14.6 22.7 64 13.5 25.2 54
WOLVERINE 7650 6.9 11.4 61 6.6 12.1 55
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Basin wide percent of average 67 65
WIND RIVER
BURROUGHS CREEK 8750 8.4 13.7 61 8.6 15.2 57
COLD SPRINGS 9630 6.5 8.2 79 7.3 9.7 75
DEER PARK 9700 20.4 15.6 131 22.3 20.2 110
HOBBS PARK 10100 13.1 13.5 97 11.6 11.5 101
LITTLE WARM 9370 7.0 10.8 65 7.8 12.3 63
SOUTH PASS 9040 18.2 15.6 117 18.4 17.0 108
ST. LAWRENCE ALT 8620 6.1 6.7 91 7.5 8.0 94
TOGWOTEE PASS 9580 14.7 23.1 64 14.8 23.0 64
TOWNSEND CREEK 8700 9.1 7.8 117 12.1 10.4 116
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Basin wide percent of average 90 87
BIGHORN BASIN
BALD MTN. 9380 14.5 18.0 81 13.2 16.0 82
BEAR TRAP MEADOW 8200 4.0 5.0 80 6.3 7.4 85
BLACKWATER 9780 12.7 22.8 56 11.7 19.1 61
BONE SPRINGS DIV 9350 13.0 14.8 88 12.6 13.3 95
EVENING STAR 9200 15.3 27.8 55 17.1 23.8 72
GRAVE SPRINGS 8550 5.8 8.4 69 7.3 8.8 83
KIRWIN 9550 5.9 10.3 57 6.6 10.4 63
MARQUETTE 8760 3.7 7.8 47 5.5 8.8 62
MIDDLE POWDER 7760 6.6 10.4 63 6.4 11.1 58
OWL CREEK 8975 3.2 4.9 65 3.3 5.2 63
POWDER RIVER PASS 9480 10.0 9.9 101 11.0 11.3 97
SHELL CREEK 9580 12.2 13.3 92 10.6 12.2 87
SYLVAN LAKE 8420 12.8 21.0 61 14.6 19.7 74
SYLVAN ROAD 7120 8.0 12.3 65 10.7 16.8 64
TIMBER CREEK 7950 2.4 5.1 47 3.1 6.5 48
YOUNTS PEAK 8350 9.3 16.0 58 9.3 15.1 62
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Basin wide percent of average 67 73
SHOSHONE RIVER
BLACKWATER 9780 12.7 22.8 56 11.7 19.1 61
EVENING STAR 9200 15.3 27.8 55 17.1 23.8 72
KIRWIN 9550 5.9 10.3 57 6.6 10.4 63
MARQUETTE 8760 3.7 7.8 47 5.5 8.8 62
SYLVAN LAKE 8420 12.8 21.0 61 14.6 19.7 74
SYLVAN ROAD 7120 8.0 12.3 65 10.7 16.8 64
YOUNTS PEAK 8350 9.3 16.0 58 9.3 15.1 62
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Basin wide percent of average 57 66
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.0 5.0 80 6.3 7.4 85
BIG GOOSE 7990 6.9 9.1 76 8.1 7.7 105
BONE SPRINGS DIV 9350 13.0 14.8 88 12.6 13.3 95
BURGESS JUNCTION 7880 8.6 10.3 83 9.5 11.0 86
CLOUD PEAK RESERVOIR 9860 12.6 11.8 107 10.1 11.5 88
DOME LAKE 8880 9.6 10.9 88 10.4 11.8 88
GRAVE SPRINGS 8550 5.8 8.4 69 7.3 8.8 83
HANSEN SAWMILL 8360 5.2 5.9 88 6.5 7.3 89
MIDDLE POWDER 7760 6.6 10.4 63 6.4 11.1 58
POWDER RIVER PASS 9480 10.0 9.9 101 11.0 11.3 97
SUCKER CREEK 8880 10.6 10.4 102 11.9 12.2 98
TIE CREEK 6870 2.2 5.9 37 7.6 9.0 84
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Basin wide percent of average 84 88
BELLE FOURCHE
BLIND PARK 6890 4.9 8.4 58 7.0 10.3 68
COLE CANYON 5910 2.9 5.7 51 5.3 -M *
NORTH RAPID CREEK 6130 3.6 7.6 47 5.8 8.1 72
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Basin wide percent of average 53 70
UPPER N. PLATTE RIVER
COLUMBINE 9160 17.3 24.0 72 18.5 23.3 79
DIVIDE PEAK 8860 18.2 18.1 101 20.7 19.1 108
ELK RIVER 8700 18.4 18.0 102 18.5 18.1 102
JOE WRIGHT 10120 16.6 19.4 86 17.3 22.8 76
NORTH FRENCH CREEK 10130 21.3 26.2 81 20.1 22.7 89
OLD BATTLE 9920 30.3 29.8 102 31.8 32.0 99
SAGE CREEK BASIN 7850 13.6 10.5 130 14.7 11.1 132
SOUTH BRUSH CREEK 8440 9.4 11.9 79 10.9 15.0 73
TOWER 10500 32.6 42.0 78 31.4 35.6 88
WEBBER SPRINGS 9250 21.6 24.7 87 24.3 24.7 98
WILLOW CREEK PASS 9540 12.0 10.9 110 11.2 11.8 95
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Basin wide percent of average 90 93
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 15.6 21.5 73 14.7 20.0 74
CASPER MTN. 7850 9.2 12.9 71 10.0 12.9 78
DEADMAN HILL 10220 13.6 14.8 92 11.4 15.3 75
DEER PARK 9700 20.4 15.6 131 22.3 20.2 110
LAPRELE CREEK 8375 6.2 10.2 61 8.2 11.4 72
RENO HILL 8500 8.2 12.4 66 8.7 13.4 65
ROACH 9700 12.7 15.6 81 15.1 17.0 89
SAND LAKE 10050 20.1 29.4 68 18.5 22.0 84
SOUTH PASS 9040 18.2 15.6 117 18.4 17.0 108
WINDY PEAK 7900 5.5 7.4 74 7.2 9.7 74
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Basin wide percent of average 83 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 12.5 11.2 112 12.4 14.3 87
DIVIDE PEAK 8860 18.2 18.1 101 20.7 19.1 108
OLD BATTLE 9920 30.3 29.8 102 31.8 32.0 99
SANDSTONE RS 8150 11.1 14.3 78 16.9 17.4 97
WHISKEY PARK 8950 23.8 27.8 86 22.4 26.4 85
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Basin wide percent of average 95 95
UPPER GREEN RIVER
BIG SANDY OPENING 9080 14.0 13.5 104 13.5 12.5 108
BLIND BULL SUM 8900 16.7 26.2 64 14.4 21.0 69
EAST RIM DIVIDE 7930 7.4 12.3 60 8.3 11.3 73
ELKHART PARK G.S. 9400 9.9 12.5 79 11.2 12.3 91
GROS VENTRE SUMMIT 8750 9.2 13.2 70 9.2 12.0 77
KENDALL R.S. 7740 9.3 14.0 66 11.0 13.7 80
LOOMIS PARK 8240 12.1 16.4 74 12.6 16.3 77
NEW FORK LAKE 8340 8.9 10.6 84 8.0 10.6 75
SNIDER BASIN 8060 12.4 13.8 90 12.8 15.1 85
SPRING CREEK DIVIDE 9000 21.3 24.8 86 20.2 24.9 81
TRIPLE PEAK 8500 17.3 23.5 74 18.1 23.1 78
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Basin wide percent of average 77 81
LOWER GREEN RIVER
HAMS FORK 7840 10.0 12.2 82 11.3 11.4 99
HEWINTA 9500 9.7 10.7 91 10.6 13.3 80
HICKERSON PARK 9100 7.6 6.7 113 9.6 7.2 133
HOLE-IN-ROCK 9150 5.7 6.5 88 8.9 6.7 133
INDIAN CREEK 9425 24.3 25.6 95 20.8 23.6 88
KELLEY R.S. 8180 14.5 15.9 91 16.4 19.1 86
STEEL CREEK PARK 10100 13.1 14.5 90 13.6 14.8 92
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Basin wide percent of average 92 95
UPPER BEAR RIVER
BUG LAKE 7950 18.7 19.5 96 20.0 18.0 111
HAYDEN FORK 9100 16.6 15.2 109 21.2 19.3 110
KELLEY R.S. 8180 14.5 15.9 91 16.4 19.1 86
LILY LAKE 9050 14.5 12.2 119 15.8 16.1 98
MONTE CRISTO 8960 25.7 28.0 92 25.1 23.6 106
SALT RIVER SUMMIT 7600 10.9 13.6 80 14.3 17.6 81
TRIAL LAKE 9960 26.7 23.4 114 27.3 23.1 118
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Basin wide percent of average 100 102
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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.