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 8 , 2012
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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 18.9 16.7 113 22.1 19.4 114
BLACK BEAR 8170 31.3 35.1 89 31.1 35.1 89
BLIND BULL SUM 8650 20.7 24.4 85 16.1 19.8 81
COTTONWOOD CREEK 7670 17.9 19.9 90 22.9 24.1 95
EAST RIM DIVIDE 7930 10.7 11.6 92 10.9 10.7 102
GRAND TARGHEE 9260 31.8 -M * 25.7 -M *
GRANITE CREEK 6770 15.1 17.0 89 15.8 18.2 87
GRASSY LAKE 7265 29.6 31.2 95 33.0 32.3 102
GROS VENTRE SUMMIT 8750 8.9 12.2 73 9.2 11.3 81
GUNSIGHT PASS 9820 11.2 -M * 12.0 -M *
LEWIS LAKE DIVIDE 7850 27.3 31.2 88 30.2 33.0 92
PHILLIPS BENCH 8200 21.6 25.2 86 23.3 25.8 90
SALT RIVER SUMMIT 7760 10.3 12.8 80 10.7 16.5 65
SNAKE RIVER STATION 6920 17.4 17.5 99 22.6 20.2 112
SPRING CREEK DIVIDE 9000 21.2 23.3 91 21.1 23.4 90
THUMB DIVIDE 7980 14.0 16.4 85 14.9 16.8 89
TOGWOTEE PASS 9580 19.6 21.7 90 21.5 21.6 100
TWO OCEAN PLATEAU 9240 29.2 24.4 120 -M 24.5 *
WILLOW CREEK 8380 24.0 26.7 90 28.9 28.3 102
YOUNTS PEAK 8350 15.2 15.3 99 14.6 14.2 103
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Basin wide percent of average 92 94
MADISON-GALLATIN
BLACK BEAR 8170 31.3 35.1 89 31.1 35.1 89
CANYON 7870 11.0 12.2 90 12.5 13.6 92
MADISON PLATEAU 7750 19.5 22.3 87 23.2 23.2 100
WEST YELLOWSTONE 6700 10.4 11.9 87 13.3 11.5 116
WHISKEY CREEK 6800 13.8 15.4 90 17.2 18.3 94
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Basin wide percent of average 89 96
YELLOWSTONE
BEARTOOTH LAKE 9360 22.3 21.0 106 21.8 17.9 122
BURNT MTN 5880 5.9 5.4 109 10.5 12.0 88
CANYON 7870 11.0 12.2 90 12.5 13.6 92
COLE CREEK 7850 13.0 12.8 102 10.5 13.1 80
EVENING STAR 9200 26.2 26.3 100 27.9 22.6 123
FISHER CREEK 9100 30.0 31.2 96 29.0 32.1 90
NORTHEAST ENTRANCE 7350 9.7 10.3 94 11.1 11.2 99
PARKER PEAK 9400 20.3 19.2 106 19.4 14.3 136
SYLVAN LAKE 8420 16.6 19.8 84 21.6 18.6 116
THUMB DIVIDE 7980 14.0 16.4 85 14.9 16.8 89
TWO OCEAN PLATEAU 9240 29.2 24.4 120 -M 24.5 *
WHITE MILL 8700 19.6 21.5 91 20.4 23.8 86
WOLVERINE 7650 12.7 11.1 114 12.3 11.6 106
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Basin wide percent of average 100 102
WIND RIVER
BURROUGHS CREEK 8750 13.5 13.2 102 13.7 14.3 96
CASTLE CREEK 8400 7.5 -M * 8.5 -M *
COLD SPRINGS 9630 7.9 7.7 103 8.8 8.8 100
DEER PARK 9700 10.9 14.8 74 16.3 18.8 87
HOBBS PARK 10100 13.5 12.6 107 12.4 10.4 119
KIRWIN 9550 11.4 9.7 118 13.2 9.6 138
LITTLE WARM 9370 8.0 10.1 79 9.9 11.4 87
OWL CREEK 8975 4.9 4.4 111 5.4 4.6 117
SOUTH PASS 9040 13.1 14.8 89 13.0 15.7 83
ST. LAWRENCE ALT 8620 5.0 6.3 79 7.2 7.3 99
TOGWOTEE PASS 9580 19.6 21.7 90 21.5 21.6 100
TOWNSEND CREEK 8700 8.5 7.3 116 10.8 9.4 115
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Basin wide percent of average 95 100
BIGHORN BASIN
BALD MTN. 9380 19.6 16.8 117 14.2 14.8 96
BEAR TRAP MEADOW 8200 8.4 4.7 179 8.3 6.7 124
BONE SPRINGS DIV 9350 18.7 13.9 135 14.5 12.2 119
GRAVE SPRINGS 8550 8.3 7.8 106 9.6 8.2 117
KIRWIN 9550 11.4 9.7 118 13.2 9.6 138
MARQUETTE 8760 8.9 -M * 11.2 7.9 142
MIDDLE POWDER 7760 10.1 9.6 105 10.1 10.1 100
OWL CREEK 8975 4.9 4.4 111 5.4 4.6 117
POWDER RIVER PASS 9480 11.9 9.2 129 13.7 10.5 130
SHELL CREEK 9580 17.0 12.4 137 15.0 11.3 133
TIMBER CREEK 7950 4.7 4.5 104 8.4 5.7 147
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Basin wide percent of average 124 122
SHOSHONE RIVER
BLACKWATER 9780 22.5 21.5 105 22.2 18.0 123
EVENING STAR 9200 26.2 26.3 100 27.9 22.6 123
MARQUETTE 8760 8.9 -M * 11.2 7.9 142
SYLVAN ROAD 7120 12.5 12.0 104 16.5 16.1 102
YOUNTS PEAK 8350 15.2 15.3 99 14.6 14.2 103
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Basin wide percent of average 102 117
POWDER RIVER
BEAR TRAP MEADOW 8200 8.4 4.7 179 8.3 6.7 124
CLOUD PEAK RESERVOIR 9860 15.8 10.7 148 14.4 10.3 140
GRAVE SPRINGS 8550 8.3 7.8 106 9.6 8.2 117
HANSEN SAWMILL 8360 6.3 5.5 115 8.3 6.6 126
MIDDLE POWDER 7760 10.1 9.6 105 10.1 10.1 100
POWDER RIVER PASS 9480 11.9 9.2 129 13.7 10.5 130
SOLDIER PARK 8720 13.0 -M * 9.5 -M *
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Basin wide percent of average 128 123
TONGUE RIVER
BIG GOOSE 7990 9.5 8.2 116 13.1 7.0 187
BONE SPRINGS DIV 9350 18.7 13.9 135 14.5 12.2 119
BURGESS JUNCTION 7880 11.7 9.5 123 13.7 10.0 137
DOME LAKE 8880 14.2 10.0 142 14.1 10.7 132
LITTLE GOOSE 8870 10.8 -M * 15.4 -M *
SUCKER CREEK 8880 14.1 9.7 145 14.4 11.1 130
TIE CREEK 6870 7.2 5.4 133 13.2 8.2 161
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Basin wide percent of average 133 140
BELLE FOURCHE
COLE CANYON 5910 6.6 5.9 112 8.1 5.8 140
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Basin wide percent of average 112 140
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.6 7.8 110 9.9 9.7 102
NORTH RAPID CREEK 6130 7.8 7.1 110 7.9 7.7 103
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Basin wide percent of average 110 102
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.3 -M * 22.8 -M *
COLUMBINE 9160 18.8 22.9 82 19.2 21.9 88
DIVIDE PEAK 8880 14.0 16.6 84 17.9 17.9 100
JOE WRIGHT 10120 13.2 18.1 73 18.3 21.2 86
LAPRELE CREEK 8375 8.7 9.5 92 11.4 10.6 108
NORTH FRENCH CREEK 10130 19.0 24.0 79 18.7 21.2 88
NEVER SUMMER 10280 11.6 17.2 67 10.8 20.1 54
OLD BATTLE 10000 21.1 27.8 76 25.6 30.0 85
RAWAH 9020 8.3 12.8 65 10.4 13.9 75
SAGE CREEK BASIN 7850 13.9 9.6 145 9.8 10.4 94
SAND LAKE 10050 22.7 26.9 84 22.4 20.3 110
SOUTH BRUSH CREEK 8440 7.9 10.8 73 10.8 14.0 77
TOWER 10500 28.3 39.4 72 28.5 33.5 85
WEBBER SPRINGS 9250 16.8 22.8 74 20.2 23.1 87
WILLOW CREEK PASS 9540 -M 10.1 * 9.2 10.9 84
ZIRKEL 9340 23.9 23.6 101 24.0 22.6 106
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Basin wide percent of average 81 88
SWEETWATER
DEER PARK 9700 10.9 14.8 74 16.3 18.8 87
LARSEN CREEK 9000 11.0 -M * 12.5 -M *
SOUTH PASS 9040 13.1 14.8 89 13.0 15.7 83
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Basin wide percent of average 81 85
LOWER N. PLATTE
CASPER MTN. 7900 17.6 11.9 148 17.2 11.7 147
LAPRELE CREEK 8375 8.7 9.5 92 11.4 10.6 108
RENO HILL 8400 15.0 11.1 135 16.6 12.2 136
WINDY PEAK 7900 6.7 6.6 102 8.6 8.9 97
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Basin wide percent of average 123 124
LARAMIE RIVER
BROOKLYN LAKE 10240 17.1 20.0 86 18.4 18.5 99
CINNABAR PARK 9574 15.2 16.5 92 19.3 17.8 108
CROW CREEK 8330 7.6 7.7 99 9.9 8.3 119
DEADMAN HILL 10220 16.2 13.6 119 15.0 14.1 106
RAWAH 9020 8.3 12.8 65 10.4 13.9 75
ROACH 9700 12.5 14.6 86 15.7 15.8 99
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Basin wide percent of average 90 100
S. PLATTE
BLACK MOUNTAIN 8920 10.0 -M * 12.4 -M *
CROW CREEK 8330 7.6 7.7 99 9.9 8.3 119
DEADMAN HILL 10220 16.2 13.6 119 15.0 14.1 106
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Basin wide percent of average 112 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.8 10.5 112 10.9 13.1 83
DIVIDE PEAK 8880 14.0 16.6 84 17.9 17.9 100
ELK RIVER 8700 15.1 16.9 89 14.8 16.9 88
LITTLE SNAKE RIVER 8915 19.8 -M * 23.5 -M *
OLD BATTLE 10000 21.1 27.8 76 25.6 30.0 85
SAGE CREEK BASIN 7850 13.9 9.6 145 9.8 10.4 94
SANDSTONE RS 8150 11.2 13.4 84 12.0 16.4 73
WHISKEY PARK 8950 20.9 25.5 82 23.4 24.6 95
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Basin wide percent of average 90 88
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.0 12.7 94 12.1 11.9 102
BLIND BULL SUM 8650 20.7 24.4 85 16.1 19.8 81
EAST RIM DIVIDE 7930 10.7 11.6 92 10.9 10.7 102
ELKHART PARK G.S. 9400 12.1 11.7 103 13.0 11.5 113
GROS VENTRE SUMMIT 8750 8.9 12.2 73 9.2 11.3 81
GUNSIGHT PASS 9820 11.2 -M * 12.0 -M *
KENDALL R.S. 7740 14.0 13.2 106 14.5 13.1 111
LOOMIS PARK 8240 13.3 15.4 86 15.5 15.5 100
NEW FORK LAKE 8340 10.8 10.1 107 9.9 10.0 99
POCKET CREEK 9360 9.1 -M * 11.2 -M *
SNIDER BASIN 8060 12.4 13.0 95 12.4 14.3 87
SPRING CREEK DIVIDE 9000 21.2 23.3 91 21.1 23.4 90
TRIPLE PEAK 8500 21.2 22.0 96 23.9 21.8 110
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Basin wide percent of average 93 97
LOWER GREEN RIVER
BLACKS FORK JCT 8870 4.9 -M * 9.6 -M *
BUCK PASTURE 9700 .1 -M * 3.3 -M *
EF BLACKS FORK GS 9308 9.4 -M * 8.6 -M *
HAMS FORK 7840 10.0 11.7 85 8.8 10.8 81
HEWINTA 9519 8.4 9.7 87 11.0 12.3 89
HICKERSON PARK 9145 8.6 6.2 139 10.8 6.6 164
HOLE-IN-ROCK 9150 7.4 6.0 123 10.7 6.1 175
INDIAN CREEK 9425 18.2 23.7 77 16.3 22.1 74
KELLEY R.S. 8180 11.9 14.8 80 13.8 17.9 77
SPIRIT LK 10223 9.6 -M * 15.1 -M *
STEEL CREEK PARK 10200 -M 13.4 * 12.7 13.6 93
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Basin wide percent of average 89 94
UPPER BEAR RIVER
BEAR RIVER RS 8500 6.5 -M * 9.0 -M *
BUG LAKE 7950 13.8 18.1 76 14.4 16.9 85
BURTS MILLER RANCH 8000 5.7 -M * 9.2 -M *
CHALK CREEK #1 8993 14.4 21.2 68 16.8 21.8 77
HAYDEN FORK 9212 14.4 14.0 103 19.4 18.0 108
KELLEY R.S. 8180 11.9 14.8 80 13.8 17.9 77
LILY LAKE 9156 8.9 11.4 78 10.8 14.9 72
MONTE CRISTO 8960 17.5 26.2 67 17.3 22.2 78
SALT RIVER SUMMIT 7760 10.3 12.8 80 10.7 16.5 65
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Basin wide percent of average 77 80
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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.