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 THURSDAY: MARCH 5 , 2009
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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 13.0 16.3 80 15.6 18.9 83
COTTONWOOD CREEK 7670 22.0 19.1 115 25.4 23.5 108
GRAND TARGHEE 9260 33.4 -M * 27.2 -M *
GRANITE CREEK 6770 14.2 16.5 86 18.5 17.8 104
GRASSY LAKE 7265 26.3 30.2 87 29.0 31.6 92
GROS VENTRE SUMMIT 8750 9.9 11.8 84 11.8 11.0 107
GUNSIGHT PASS 9820 11.9 -M * 12.6 -M *
LEWIS LAKE DIVIDE 7850 22.5 30.3 74 25.8 32.2 80
PHILLIPS BENCH 8200 21.1 24.5 86 23.3 25.1 93
SALT RIVER SUMMIT 7760 11.7 12.4 94 13.0 16.1 81
SNAKE RIVER STATION 6920 14.3 16.9 85 18.3 19.8 92
SPRING CREEK DIVIDE 9000 22.4 22.7 99 22.4 22.9 98
THUMB DIVIDE 7980 14.4 15.8 91 15.9 16.4 97
TOGWOTEE PASS 9580 22.7 21.1 108 24.7 21.1 117
TWO OCEAN PLATEAU 9240 28.9 23.8 121 22.7 23.9 95
WILLOW CREEK 8380 28.2 26.0 108 32.5 27.6 118
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Basin wide percent of average 95 97
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 19.3 20.2 96 17.6 17.4 101
BLACK BEAR 8170 28.4 33.9 84 28.7 34.1 84
CANYON 7870 11.5 11.7 98 12.4 13.3 93
FISHER CREEK 9100 30.9 30.3 102 29.6 31.3 95
MADISON PLATEAU 7750 16.7 21.4 78 18.5 22.6 82
NORTHEAST ENTRANCE 7350 9.8 10.0 98 12.0 11.0 109
PARKER PEAK 9400 21.5 18.6 116 -M 14.0 *
SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102
THUMB DIVIDE 7980 14.4 15.8 91 15.9 16.4 97
TWO OCEAN PLATEAU 9240 28.9 23.8 121 22.7 23.9 95
WHISKEY CREEK 6800 12.2 14.8 82 15.3 17.8 86
WHITE MILL 8700 21.1 20.8 101 21.0 23.2 91
WOLVERINE 7650 10.6 10.8 98 10.2 11.4 89
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Basin wide percent of average 96 92
WIND RIVER
BURROUGHS CREEK 8750 13.2 12.9 102 13.9 14.0 99
COLD SPRINGS 9630 5.7 7.4 77 7.5 8.6 87
DEER PARK 9700 7.6 14.5 52 12.0 18.3 66
HOBBS PARK 10100 8.1 12.1 67 8.3 10.1 82
LITTLE WARM 9370 8.7 9.7 90 11.1 11.1 100
SOUTH PASS 9040 8.3 14.4 58 10.2 15.3 67
ST. LAWRENCE ALT 8620 2.3 6.1 38 5.3 7.1 75
TOGWOTEE PASS 9580 22.7 21.1 108 24.7 21.1 117
TOWNSEND CREEK 8700 4.7 7.1 66 7.2 9.1 79
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Basin wide percent of average 77 87
BIGHORN BASIN
BALD MTN. 9380 16.0 16.3 98 13.0 14.4 90
BEAR TRAP MEADOW 8200 7.5 4.5 167 7.7 6.5 118
BLACKWATER 9780 19.5 20.9 93 18.0 17.5 103
BONE SPRINGS DIV 9350 15.8 13.5 117 12.4 11.9 104
EVENING STAR 9200 24.7 25.6 96 25.9 22.2 117
GRAVE SPRINGS 8550 6.8 7.5 91 7.7 8.0 96
KIRWIN 9550 9.6 9.3 103 10.8 9.4 115
MARQUETTE 8760 3.1 7.0 44 6.1 7.7 79
MIDDLE POWDER 7760 8.7 9.2 95 7.9 9.8 81
OWL CREEK 8975 4.1 4.2 98 4.0 4.5 89
POWDER RIVER PASS 9480 10.8 8.9 121 12.4 10.2 122
SHELL CREEK 9580 14.5 12.1 120 13.8 11.0 125
SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102
SYLVAN ROAD 7120 12.5 11.6 108 15.5 15.8 98
TIMBER CREEK 7950 3.0 4.3 70 6.0 5.5 109
YOUNTS PEAK 8350 15.6 14.9 105 13.9 13.9 100
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Basin wide percent of average 100 104
SHOSHONE RIVER
BLACKWATER 9780 19.5 20.9 93 18.0 17.5 103
EVENING STAR 9200 24.7 25.6 96 25.9 22.2 117
KIRWIN 9550 9.6 9.3 103 10.8 9.4 115
MARQUETTE 8760 3.1 7.0 44 6.1 7.7 79
SYLVAN LAKE 8420 16.3 19.2 85 18.5 18.2 102
SYLVAN ROAD 7120 12.5 11.6 108 15.5 15.8 98
YOUNTS PEAK 8350 15.6 14.9 105 13.9 13.9 100
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Basin wide percent of average 93 104
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.5 4.5 167 7.7 6.5 118
BIG GOOSE 7990 6.9 7.9 87 9.0 6.9 130
BONE SPRINGS DIV 9350 15.8 13.5 117 12.4 11.9 104
BURGESS JUNCTION 7880 9.7 9.2 105 10.1 9.7 104
CLOUD PEAK RESERVOIR 9860 14.1 10.3 137 13.4 10.0 134
DOME LAKE 8880 9.9 9.7 102 12.0 10.4 115
GRAVE SPRINGS 8550 6.8 7.5 91 7.7 8.0 96
HANSEN SAWMILL 8360 5.4 5.3 102 8.1 6.4 127
MIDDLE POWDER 7760 8.7 9.2 95 7.9 9.8 81
POWDER RIVER PASS 9480 10.8 8.9 121 12.4 10.2 122
SUCKER CREEK 8880 11.4 9.4 121 13.5 10.7 126
TIE CREEK 6870 4.0 5.1 78 10.5 8.0 131
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Basin wide percent of average 110 115
BELLE FOURCHE
BLIND PARK 6890 7.9 7.4 107 12.8 9.5 135
COLE CANYON 5910 5.7 5.9 97 10.0 5.6 179
NORTH RAPID CREEK 6130 8.1 7.0 116 11.1 7.6 146
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Basin wide percent of average 107 149
UPPER N. PLATTE RIVER
COLUMBINE 9160 23.9 22.4 107 22.5 21.3 106
DIVIDE PEAK 8880 18.6 16.0 116 20.3 17.4 117
ELK RIVER 8700 20.0 16.5 121 18.6 16.5 113
JOE WRIGHT 10120 18.7 17.6 106 22.7 20.6 110
NORTH FRENCH CREEK 10130 28.7 23.2 124 26.8 20.7 129
OLD BATTLE 10000 27.4 26.9 102 32.4 29.1 111
SAGE CREEK BASIN 7850 10.3 9.3 111 11.8 10.1 117
SOUTH BRUSH CREEK 8440 11.2 10.3 109 12.8 13.6 94
TOWER 10500 37.4 38.3 98 34.8 32.6 107
WEBBER SPRINGS 9250 20.7 22.0 94 23.8 22.5 106
WILLOW CREEK PASS 9540 10.8 9.8 110 9.8 10.6 92
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Basin wide percent of average 107 110
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 18.6 19.4 96 17.5 17.9 98
CASPER MTN. 7900 8.4 11.5 73 10.4 11.3 92
DEADMAN HILL 10220 13.2 13.2 100 13.6 13.6 100
DEER PARK 9700 7.6 14.5 52 12.0 18.3 66
LAPRELE CREEK 8375 7.7 9.1 85 8.5 10.3 83
RENO HILL 8400 8.9 10.7 83 10.2 11.8 86
ROACH 9700 13.3 14.2 94 15.2 15.3 99
SAND LAKE 10050 24.0 25.9 93 22.4 19.7 114
SOUTH PASS 9040 8.3 14.4 58 10.2 15.3 67
WINDY PEAK 7900 6.7 6.2 108 7.3 8.7 84
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Basin wide percent of average 84 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 13.4 10.0 134 14.6 12.6 116
DIVIDE PEAK 8880 18.6 16.0 116 20.3 17.4 117
OLD BATTLE 10000 27.4 26.9 102 32.4 29.1 111
SANDSTONE RS 8150 14.2 12.8 111 16.8 16.0 105
WHISKEY PARK 8950 27.8 24.5 113 28.1 23.9 118
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Basin wide percent of average 112 113
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.1 12.4 81 10.0 11.6 86
BLIND BULL SUM 8650 20.9 23.6 89 16.9 19.4 87
EAST RIM DIVIDE 7930 8.2 11.3 73 10.6 10.4 102
ELKHART PARK G.S. 9400 10.9 11.4 96 11.9 11.2 106
GROS VENTRE SUMMIT 8750 9.9 11.8 84 11.8 11.0 107
GUNSIGHT PASS 9820 11.9 -M * 12.6 -M *
KENDALL R.S. 7740 9.7 12.7 76 11.8 12.8 92
LOOMIS PARK 8240 14.2 14.9 95 16.3 15.1 108
NEW FORK LAKE 8340 9.9 9.8 101 9.4 9.8 96
SNIDER BASIN 8060 12.0 12.7 94 12.6 14.0 90
SPRING CREEK DIVIDE 9000 22.4 22.7 99 22.4 22.9 98
TRIPLE PEAK 8500 20.8 21.3 98 22.5 21.2 106
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Basin wide percent of average 91 98
LOWER GREEN RIVER
HAMS FORK 7840 9.2 11.3 81 9.2 10.6 87
HEWINTA 9519 6.2 9.4 66 9.6 11.9 81
HICKERSON PARK 9145 2.2 6.0 37 5.1 6.4 80
HOLE-IN-ROCK 9150 3.1 5.9 53 5.4 5.9 92
INDIAN CREEK 9425 19.3 22.9 84 17.7 21.5 82
KELLEY R.S. 8180 12.4 14.3 87 14.2 17.5 81
STEEL CREEK PARK 10200 8.5 13.0 65 11.9 13.2 90
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Basin wide percent of average 74 84
UPPER BEAR RIVER
BUG LAKE 7950 14.8 17.5 85 14.0 16.5 85
HAYDEN FORK 9212 12.9 13.5 96 16.0 17.5 91
KELLEY R.S. 8180 12.4 14.3 87 14.2 17.5 81
LILY LAKE 9156 10.5 11.1 95 12.4 14.6 85
MONTE CRISTO 8960 20.6 25.4 81 20.8 21.6 96
SALT RIVER SUMMIT 7760 11.7 12.4 94 13.0 16.1 81
TRIAL LAKE 9992 18.4 21.1 87 17.8 21.0 85
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Basin wide percent of average 88 87
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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.