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 SUNDAY: MARCH 11 , 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 19.0 17.0 112 22.1 19.7 112
BLACK BEAR 8170 31.4 35.6 88 31.7 35.9 88
BLIND BULL SUM 8650 21.0 25.0 84 16.2 20.1 81
COTTONWOOD CREEK 7670 18.1 20.6 88 22.9 24.5 93
EAST RIM DIVIDE 7930 11.0 11.8 93 11.0 10.9 101
GRAND TARGHEE 9260 32.1 -M * 25.9 -M *
GRANITE CREEK 6770 15.2 17.4 87 15.8 18.4 86
GRASSY LAKE 7265 29.9 31.9 94 33.1 32.8 101
GROS VENTRE SUMMIT 8750 9.1 12.5 73 9.6 11.5 83
GUNSIGHT PASS 9820 11.7 -M * 12.2 -M *
LEWIS LAKE DIVIDE 7850 27.6 31.9 87 30.5 33.5 91
PHILLIPS BENCH 8200 21.9 25.8 85 23.4 26.2 89
SALT RIVER SUMMIT 7760 10.5 13.0 81 11.0 16.8 65
SNAKE RIVER STATION 6920 17.8 17.8 100 22.6 20.5 110
SPRING CREEK DIVIDE 9000 21.4 23.8 90 21.3 23.8 89
THUMB DIVIDE 7980 14.2 16.9 84 15.1 17.1 88
TOGWOTEE PASS 9580 19.8 22.2 89 21.5 22.0 98
TWO OCEAN PLATEAU 9240 29.5 24.9 118 25.0 25.0 100
WILLOW CREEK 8380 24.3 27.3 89 29.0 28.8 101
YOUNTS PEAK 8350 15.3 15.5 99 14.6 14.4 101
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Basin wide percent of average 91 94
MADISON-GALLATIN
BLACK BEAR 8170 31.4 35.6 88 31.7 35.9 88
CANYON 7870 11.0 12.4 89 12.7 13.9 91
MADISON PLATEAU 7750 19.8 22.7 87 23.3 23.7 98
WEST YELLOWSTONE 6700 10.7 12.0 89 13.4 11.6 116
WHISKEY CREEK 6800 13.9 15.7 89 17.3 18.7 93
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Basin wide percent of average 88 95
YELLOWSTONE
BEARTOOTH LAKE 9360 22.4 21.4 105 21.8 18.2 120
BURNT MTN 5880 5.9 5.5 107 10.5 12.3 85
CANYON 7870 11.0 12.4 89 12.7 13.9 91
COLE CREEK 7850 13.1 13.2 99 10.5 13.5 78
EVENING STAR 9200 26.4 26.8 99 28.5 23.0 124
FISHER CREEK 9100 30.1 31.7 95 29.0 32.7 89
NORTHEAST ENTRANCE 7350 9.3 10.5 89 -M 11.4 *
PARKER PEAK 9400 20.3 19.6 104 20.1 14.6 138
SYLVAN LAKE 8420 16.7 20.1 83 21.6 19.0 114
THUMB DIVIDE 7980 14.2 16.9 84 15.1 17.1 88
TWO OCEAN PLATEAU 9240 29.5 24.9 118 25.0 25.0 100
WHITE MILL 8700 19.6 21.9 89 20.5 24.2 85
WOLVERINE 7650 12.3 11.3 109 11.9 11.8 101
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Basin wide percent of average 98 101
WIND RIVER
BURROUGHS CREEK 8750 13.5 13.4 101 14.0 14.6 96
CASTLE CREEK 8400 7.7 -M * 8.4 -M *
COLD SPRINGS 9630 8.0 7.9 101 9.0 9.0 100
DEER PARK 9700 11.0 15.3 72 16.3 19.2 85
HOBBS PARK 10100 13.6 12.9 105 12.5 10.6 118
KIRWIN 9550 11.5 9.9 116 13.3 9.8 136
LITTLE WARM 9370 8.0 10.3 78 10.2 11.6 88
OWL CREEK 8975 4.9 4.5 109 5.5 4.8 115
SOUTH PASS 9040 13.2 15.2 87 13.0 16.0 81
ST. LAWRENCE ALT 8620 5.0 6.4 78 7.2 7.5 96
TOGWOTEE PASS 9580 19.8 22.2 89 21.5 22.0 98
TOWNSEND CREEK 8700 8.2 7.5 109 11.0 9.6 115
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Basin wide percent of average 93 99
BIGHORN BASIN
BALD MTN. 9380 19.6 17.2 114 14.4 15.1 95
BEAR TRAP MEADOW 8200 8.7 4.8 181 8.5 6.9 123
BONE SPRINGS DIV 9350 18.7 14.1 133 14.6 12.5 117
GRAVE SPRINGS 8550 8.4 7.9 106 9.7 8.4 115
KIRWIN 9550 11.5 9.9 116 13.3 9.8 136
MARQUETTE 8760 8.9 -M * 11.2 8.0 140
MIDDLE POWDER 7760 10.1 9.8 103 10.4 10.4 100
OWL CREEK 8975 4.9 4.5 109 5.5 4.8 115
POWDER RIVER PASS 9480 11.8 9.4 126 13.9 10.7 130
SHELL CREEK 9580 17.1 12.6 136 15.0 11.5 130
TIMBER CREEK 7950 4.9 4.6 107 8.4 5.9 142
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Basin wide percent of average 122 120
SHOSHONE RIVER
BLACKWATER 9780 22.6 22.0 103 22.4 18.3 122
EVENING STAR 9200 26.4 26.8 99 28.5 23.0 124
MARQUETTE 8760 8.9 -M * 11.2 8.0 140
SYLVAN ROAD 7120 12.8 12.0 107 16.5 16.3 101
YOUNTS PEAK 8350 15.3 15.5 99 14.6 14.4 101
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Basin wide percent of average 101 116
POWDER RIVER
BEAR TRAP MEADOW 8200 8.7 4.8 181 8.5 6.9 123
CLOUD PEAK RESERVOIR 9860 15.9 11.1 143 14.4 10.6 136
GRAVE SPRINGS 8550 8.4 7.9 106 9.7 8.4 115
HANSEN SAWMILL 8360 5.9 5.6 105 8.2 6.8 121
MIDDLE POWDER 7760 10.1 9.8 103 10.4 10.4 100
POWDER RIVER PASS 9480 11.8 9.4 126 13.9 10.7 130
SOLDIER PARK 8720 13.1 -M * 9.5 -M *
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Basin wide percent of average 125 121
TONGUE RIVER
BIG GOOSE 7990 9.7 8.4 115 13.5 7.2 188
BONE SPRINGS DIV 9350 18.7 14.1 133 14.6 12.5 117
BURGESS JUNCTION 7880 11.8 9.8 120 13.8 10.2 135
DOME LAKE 8880 14.3 10.3 139 14.2 11.0 129
LITTLE GOOSE 8870 10.8 -M * 15.4 -M *
SUCKER CREEK 8880 14.0 9.9 141 14.6 11.4 128
TIE CREEK 6870 7.1 5.7 125 13.2 8.4 157
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Basin wide percent of average 130 138
BELLE FOURCHE
COLE CANYON 5910 6.7 6.1 110 8.1 5.9 137
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Basin wide percent of average 110 137
CHEYENNE RIVER BASIN
BLIND PARK 6890 8.6 8.0 108 9.8 9.9 99
NORTH RAPID CREEK 6130 7.6 7.3 104 7.7 7.8 99
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Basin wide percent of average 106 99
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.4 -M * 22.8 -M *
COLUMBINE 9160 18.8 23.3 81 19.2 22.4 86
DIVIDE PEAK 8880 14.2 17.0 84 18.0 18.3 98
JOE WRIGHT 10120 13.2 18.5 71 18.2 21.6 84
LAPRELE CREEK 8375 9.0 9.7 93 11.5 10.8 106
NORTH FRENCH CREEK 10130 19.0 24.7 77 18.7 21.7 86
NEVER SUMMER 10280 11.7 17.6 66 10.7 20.6 52
OLD BATTLE 10000 21.9 28.4 77 25.7 30.6 84
RAWAH 9020 8.0 13.1 61 10.5 14.2 74
SAGE CREEK BASIN 7850 14.1 9.9 142 9.8 10.6 92
SAND LAKE 10050 22.7 27.7 82 22.4 20.7 108
SOUTH BRUSH CREEK 8440 7.9 11.2 71 10.8 14.2 76
TOWER 10500 28.7 40.2 71 29.7 34.2 87
WEBBER SPRINGS 9250 16.7 23.5 71 20.2 23.6 86
WILLOW CREEK PASS 9540 -M 10.3 * 9.2 11.1 83
ZIRKEL 9340 24.1 24.0 100 -M 23.0 *
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Basin wide percent of average 80 85
SWEETWATER
DEER PARK 9700 11.0 15.3 72 16.3 19.2 85
LARSEN CREEK 9000 11.2 -M * 12.5 -M *
SOUTH PASS 9040 13.2 15.2 87 13.0 16.0 81
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Basin wide percent of average 79 83
LOWER N. PLATTE
CASPER MTN. 7900 17.7 12.2 145 17.1 12.0 142
LAPRELE CREEK 8375 9.0 9.7 93 11.5 10.8 106
RENO HILL 8400 15.1 11.5 131 16.7 12.4 135
WINDY PEAK 7900 6.8 6.8 100 8.6 9.1 95
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Basin wide percent of average 121 122
LARAMIE RIVER
BROOKLYN LAKE 10240 17.1 20.4 84 18.5 18.9 98
CINNABAR PARK 9574 14.4 16.8 86 19.3 18.1 107
CROW CREEK 8330 7.7 7.8 99 10.0 8.5 118
DEADMAN HILL 10220 16.2 13.9 117 15.0 14.4 104
RAWAH 9020 8.0 13.1 61 10.5 14.2 74
ROACH 9700 12.6 14.9 85 15.7 16.1 98
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Basin wide percent of average 87 99
S. PLATTE
BLACK MOUNTAIN 8920 10.0 -M * 12.3 -M *
CROW CREEK 8330 7.7 7.8 99 10.0 8.5 118
DEADMAN HILL 10220 16.2 13.9 117 15.0 14.4 104
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Basin wide percent of average 110 109
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.7 10.8 108 10.9 13.4 81
DIVIDE PEAK 8880 14.2 17.0 84 18.0 18.3 98
ELK RIVER 8700 14.6 17.3 84 14.7 17.3 85
LITTLE SNAKE RIVER 8915 19.5 -M * 23.4 -M *
OLD BATTLE 10000 21.9 28.4 77 25.7 30.6 84
SAGE CREEK BASIN 7850 14.1 9.9 142 9.8 10.6 92
SANDSTONE RS 8150 10.7 13.7 78 12.0 16.8 71
WHISKEY PARK 8950 21.3 26.3 81 23.4 25.1 93
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Basin wide percent of average 88 87
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.3 13.0 95 12.2 12.1 101
BLIND BULL SUM 8650 21.0 25.0 84 16.2 20.1 81
EAST RIM DIVIDE 7930 11.0 11.8 93 11.0 10.9 101
ELKHART PARK G.S. 9400 12.2 12.0 102 13.1 11.7 112
GROS VENTRE SUMMIT 8750 9.1 12.5 73 9.6 11.5 83
GUNSIGHT PASS 9820 11.7 -M * 12.2 -M *
KENDALL R.S. 7740 14.3 13.5 106 14.6 13.3 110
LOOMIS PARK 8240 13.4 15.7 85 15.5 15.8 98
NEW FORK LAKE 8340 11.0 10.2 108 10.1 10.2 99
POCKET CREEK 9360 9.2 -M * 11.2 -M *
SNIDER BASIN 8060 12.5 13.3 94 12.5 14.5 86
SPRING CREEK DIVIDE 9000 21.4 23.8 90 21.3 23.8 89
TRIPLE PEAK 8500 21.4 22.4 96 23.9 22.2 108
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Basin wide percent of average 92 96
LOWER GREEN RIVER
BLACKS FORK JCT 8870 5.3 -M * 9.7 -M *
BUCK PASTURE 9700 .1 -M * 3.2 -M *
EF BLACKS FORK GS 9308 9.4 -M * 8.6 -M *
HAMS FORK 7840 10.3 11.9 87 8.8 11.0 80
HEWINTA 9519 8.8 10.0 88 11.1 12.5 89
HICKERSON PARK 9145 8.8 6.3 140 10.9 6.7 163
HOLE-IN-ROCK 9150 7.6 6.2 123 10.7 6.3 170
INDIAN CREEK 9425 18.7 24.3 77 16.6 22.5 74
KELLEY R.S. 8180 11.9 15.2 78 14.0 18.2 77
SPIRIT LK 10223 10.1 -M * 15.2 -M *
STEEL CREEK PARK 10200 8.9 13.7 65 12.7 13.9 91
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Basin wide percent of average 86 93
UPPER BEAR RIVER
BEAR RIVER RS 8500 6.8 -M * 9.1 -M *
BUG LAKE 7950 14.0 18.5 76 14.5 17.2 84
BURTS MILLER RANCH 8000 5.8 -M * 9.4 -M *
CHALK CREEK #1 8993 14.4 21.7 66 16.7 22.2 75
HAYDEN FORK 9212 11.3 14.4 78 15.7 18.3 86
KELLEY R.S. 8180 11.9 15.2 78 14.0 18.2 77
LILY LAKE 9156 9.2 11.6 79 10.8 15.2 71
MONTE CRISTO 8960 17.6 26.8 66 17.5 22.6 77
SALT RIVER SUMMIT 7760 10.5 13.0 81 11.0 16.8 65
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Basin wide percent of average 73 77
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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.