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 9 , 2007
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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 13.8 16.7 83 17.6 19.4 91
COTTONWOOD CREEK 7600 16.9 20.2 84 19.6 24.2 81
GRANITE CREEK 6770 11.3 17.1 66 14.4 18.1 80
GRASSY LAKE 7265 25.4 31.4 81 31.4 32.4 97
GROS VENTRE SUMMIT 8750 8.6 12.3 70 10.3 11.4 90
LEWIS LAKE DIVIDE 7850 23.9 31.5 76 28.5 33.0 86
PHILLIPS BENCH 8200 16.7 25.4 66 20.8 25.8 81
SALT RIVER SUMMIT 7600 10.1 12.9 78 12.6 16.6 76
SNAKE RIVER STATION 6920 13.6 17.6 77 21.1 20.3 104
SPRING CREEK DIVIDE 9000 16.8 23.5 71 17.3 23.6 73
THUMB DIVIDE 7980 11.9 16.5 72 13.4 16.8 80
TOGWOTEE PASS 9580 16.2 21.8 74 18.3 21.8 84
TWO OCEAN PLATEAU 9240 21.8 24.6 89 20.7 24.6 84
WILLOW CREEK 8450 20.6 26.9 77 25.2 28.4 89
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Basin wide percent of average 76 86
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 16.7 21.0 80 16.3 17.9 91
BLACK BEAR 8170 30.6 34.9 88 32.2 35.3 91
CANYON 8090 10.8 12.1 89 13.8 13.7 101
FISHER CREEK 9100 26.6 31.1 86 27.3 32.2 85
MADISON PLATEAU 7750 17.1 22.2 77 20.6 23.4 88
NORTHEAST ENTRANCE 7350 7.9 10.2 77 11.5 11.3 102
PARKER PEAK 9400 16.5 19.2 86 15.3 14.4 106
SYLVAN LAKE 8420 13.9 19.8 70 19.2 18.7 103
THUMB DIVIDE 7980 11.9 16.5 72 13.4 16.8 80
TWO OCEAN PLATEAU 9240 21.8 24.6 89 20.7 24.6 84
WHISKEY CREEK 6800 11.6 15.3 76 16.5 18.4 90
WHITE MILL 8700 17.2 21.4 80 18.2 23.9 76
WOLVERINE 7650 8.2 11.0 75 10.0 11.6 86
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Basin wide percent of average 81 90
WIND RIVER
BURROUGHS CREEK 8750 10.9 13.1 83 12.8 14.4 89
COLD SPRINGS 9630 4.9 7.7 64 6.3 9.0 70
DEER PARK 9700 9.7 14.9 65 12.9 18.9 68
HOBBS PARK 10100 8.4 12.6 67 8.5 10.7 79
LITTLE WARM 9370 6.9 10.1 68 8.5 11.6 73
SOUTH PASS 9040 10.2 14.8 69 11.3 15.9 71
ST. LAWRENCE ALT 8620 4.5 6.3 71 5.5 7.5 73
TOGWOTEE PASS 9580 16.2 21.8 74 18.3 21.8 84
TOWNSEND CREEK 8700 5.5 7.3 75 8.5 9.6 89
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Basin wide percent of average 71 78
BIGHORN BASIN
BALD MTN. 9380 15.6 16.9 92 12.4 15.0 83
BEAR TRAP MEADOW 8200 4.9 4.6 107 5.5 6.9 80
BLACKWATER 9780 17.6 21.5 82 16.8 18.1 93
BONE SPRINGS DIV 9350 13.8 13.9 99 12.6 12.4 102
EVENING STAR 9200 19.6 26.3 75 24.5 22.8 107
GRAVE SPRINGS 8550 5.8 7.8 74 5.9 8.3 71
KIRWIN 9550 7.7 9.7 79 9.5 9.7 98
MARQUETTE 8760 2.3 7.3 32 6.7 8.1 83
MIDDLE POWDER 7760 7.9 9.6 82 6.6 10.3 64
OWL CREEK 8975 4.7 4.4 107 5.2 4.8 108
POWDER RIVER PASS 9480 7.9 9.3 85 8.8 10.6 83
SHELL CREEK 9580 12.2 12.5 98 9.5 11.5 83
SYLVAN LAKE 8420 13.9 19.8 70 19.2 18.7 103
SYLVAN ROAD 7120 8.5 11.9 71 14.6 16.2 90
TIMBER CREEK 7950 2.3 4.6 50 5.6 5.9 95
YOUNTS PEAK 8350 10.2 15.2 67 12.8 14.3 90
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Basin wide percent of average 79 91
SHOSHONE RIVER
BLACKWATER 9780 17.6 21.5 82 16.8 18.1 93
EVENING STAR 9200 19.6 26.3 75 24.5 22.8 107
KIRWIN 9550 7.7 9.7 79 9.5 9.7 98
MARQUETTE 8760 2.3 7.3 32 6.7 8.1 83
SYLVAN LAKE 8420 13.9 19.8 70 19.2 18.7 103
SYLVAN ROAD 7120 8.5 11.9 71 14.6 16.2 90
YOUNTS PEAK 8350 10.2 15.2 67 12.8 14.3 90
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Basin wide percent of average 71 96
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.9 4.6 107 5.5 6.9 80
BIG GOOSE 7990 5.8 8.3 70 7.2 7.2 100
BONE SPRINGS DIV 9350 13.8 13.9 99 12.6 12.4 102
BURGESS JUNCTION 7880 9.3 9.6 97 10.2 10.2 100
CLOUD PEAK RESERVOIR 9860 9.9 10.8 92 8.4 10.6 79
DOME LAKE 8880 8.6 10.1 85 9.6 11.0 87
GRAVE SPRINGS 8550 5.8 7.8 74 5.9 8.3 71
HANSEN SAWMILL 8360 3.0 5.5 55 4.5 6.8 66
MIDDLE POWDER 7760 7.9 9.6 82 6.6 10.3 64
POWDER RIVER PASS 9480 7.9 9.3 85 8.8 10.6 83
SUCKER CREEK 8880 10.8 9.7 111 11.8 11.3 104
TIE CREEK 6870 4.5 5.4 83 8.8 8.4 105
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Basin wide percent of average 88 88
BELLE FOURCHE
BLIND PARK 6890 5.4 7.8 69 8.7 9.8 89
COLE CANYON 5910 5.5 5.4 102 7.3 -M *
NORTH RAPID CREEK 6130 6.1 7.2 85 7.0 7.8 90
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Basin wide percent of average 83 89
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.5 23.0 80 19.4 22.0 88
DIVIDE PEAK 8860 16.1 16.8 96 17.6 18.0 98
ELK RIVER 8700 16.7 17.0 98 15.8 17.0 93
JOE WRIGHT 10120 18.1 18.3 99 20.3 21.4 95
NORTH FRENCH CREEK 10130 21.1 24.3 87 20.7 21.4 97
OLD BATTLE 9920 21.5 28.0 77 25.8 30.1 86
SAGE CREEK BASIN 7850 11.2 9.7 115 11.0 10.5 105
SOUTH BRUSH CREEK 8440 11.3 10.9 104 12.8 14.1 91
TOWER 10500 28.8 39.7 73 30.0 33.6 89
WEBBER SPRINGS 9250 16.8 23.0 73 20.9 23.3 90
WILLOW CREEK PASS 9540 12.5 10.2 123 12.0 11.0 109
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Basin wide percent of average 87 93
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 16.9 20.1 84 17.0 18.7 91
CASPER MTN. 7850 9.4 12.0 78 10.3 12.0 86
DEADMAN HILL 10220 14.0 13.8 101 15.3 14.3 107
DEER PARK 9700 9.7 14.9 65 12.9 18.9 68
LAPRELE CREEK 8375 7.5 9.5 79 8.6 10.7 80
RENO HILL 8500 11.0 11.3 97 11.8 12.4 95
ROACH 9700 14.5 14.7 99 16.3 15.9 103
SAND LAKE 10050 21.2 27.2 78 20.6 20.6 100
SOUTH PASS 9040 10.2 14.8 69 11.3 15.9 71
WINDY PEAK 7900 6.8 6.7 101 8.4 9.0 93
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Basin wide percent of average 84 89
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.1 10.6 86 11.7 13.2 89
DIVIDE PEAK 8860 16.1 16.8 96 17.6 18.0 98
OLD BATTLE 9920 21.5 28.0 77 25.8 30.1 86
SANDSTONE RS 8150 10.3 13.5 76 13.8 16.5 84
WHISKEY PARK 8950 19.9 25.8 77 21.8 24.8 88
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Basin wide percent of average 81 88
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.5 12.8 82 10.2 11.9 86
BLIND BULL SUM 8900 18.9 24.6 77 15.0 20.0 75
EAST RIM DIVIDE 7930 7.4 11.6 64 8.5 10.7 79
ELKHART PARK G.S. 9400 8.2 11.8 69 9.8 11.5 85
GROS VENTRE SUMMIT 8750 8.6 12.3 70 10.3 11.4 90
KENDALL R.S. 7740 9.2 13.3 69 11.0 13.1 84
LOOMIS PARK 8240 10.1 15.5 65 12.6 15.5 81
NEW FORK LAKE 8340 7.7 10.1 76 8.1 10.1 80
SNIDER BASIN 8060 9.7 13.1 74 10.5 14.4 73
SPRING CREEK DIVIDE 9000 16.8 23.5 71 17.3 23.6 73
TRIPLE PEAK 8500 16.8 22.2 76 19.6 21.8 90
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Basin wide percent of average 73 81
LOWER GREEN RIVER
HAMS FORK 7840 8.6 11.7 74 8.5 10.9 78
HEWINTA 9500 7.8 9.8 80 11.7 12.4 94
HICKERSON PARK 9100 6.0 6.2 97 8.6 6.7 128
HOLE-IN-ROCK 9150 6.5 6.1 107 8.1 6.2 131
INDIAN CREEK 9425 18.6 23.9 78 16.0 22.3 72
KELLEY R.S. 8180 11.9 14.9 80 14.3 18.1 79
STEEL CREEK PARK 10100 10.9 13.6 80 12.4 13.8 90
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Basin wide percent of average 82 88
UPPER BEAR RIVER
BUG LAKE 7950 13.2 18.2 73 13.9 17.1 81
HAYDEN FORK 9100 11.4 14.2 80 18.2 18.2 100
KELLEY R.S. 8180 11.9 14.9 80 14.3 18.1 79
LILY LAKE 9050 11.0 11.4 96 13.5 15.2 89
MONTE CRISTO 8960 18.8 26.4 71 19.1 22.3 86
SALT RIVER SUMMIT 7600 10.1 12.9 78 12.6 16.6 76
TRIAL LAKE 9960 13.9 22.0 63 17.6 21.7 81
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Basin wide percent of average 75 85
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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.