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 WEDNESDAY: MARCH 14 , 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 18.8 17.3 109 22.1 20.0 110
BLACK BEAR 8170 31.7 36.3 87 32.0 36.7 87
BLIND BULL SUM 8650 21.0 25.5 82 16.3 20.5 80
COTTONWOOD CREEK 7670 18.1 21.2 85 22.9 25.0 92
EAST RIM DIVIDE 7930 11.0 12.1 91 11.0 11.1 99
GRAND TARGHEE 9260 32.2 -M * 26.1 -M *
GRANITE CREEK 6770 15.2 17.8 85 15.8 18.7 84
GRASSY LAKE 7265 30.0 32.6 92 33.5 33.4 100
GROS VENTRE SUMMIT 8750 9.0 12.8 70 9.7 11.7 83
GUNSIGHT PASS 9820 11.2 -M * 12.4 -M *
LEWIS LAKE DIVIDE 7850 27.7 32.6 85 30.8 34.1 90
PHILLIPS BENCH 8200 22.1 26.3 84 23.6 26.7 88
SALT RIVER SUMMIT 7760 10.5 13.3 79 11.2 17.1 65
SNAKE RIVER STATION 6920 17.4 18.2 96 22.8 20.8 110
SPRING CREEK DIVIDE 9000 21.4 24.3 88 21.4 24.2 88
THUMB DIVIDE 7980 14.5 17.3 84 15.4 17.4 89
TOGWOTEE PASS 9580 19.8 22.6 88 21.7 22.4 97
TWO OCEAN PLATEAU 9240 29.7 25.4 117 25.4 25.4 100
WILLOW CREEK 8380 24.3 27.8 87 29.0 29.4 99
YOUNTS PEAK 8350 15.4 15.6 99 14.8 14.7 101
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Basin wide percent of average 90 93
MADISON-GALLATIN
BLACK BEAR 8170 31.7 36.3 87 32.0 36.7 87
CANYON 7870 11.1 12.6 88 12.8 14.1 91
MADISON PLATEAU 7750 19.8 23.1 86 23.5 24.1 98
WEST YELLOWSTONE 6700 10.5 12.1 87 13.4 11.8 114
WHISKEY CREEK 6800 14.0 15.9 88 17.3 19.1 91
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Basin wide percent of average 87 94
YELLOWSTONE
BEARTOOTH LAKE 9360 22.6 21.8 104 22.0 18.5 119
BURNT MTN 5880 5.6 5.6 100 10.4 12.7 82
CANYON 7870 11.1 12.6 88 12.8 14.1 91
COLE CREEK 7850 13.0 13.5 96 10.5 13.9 76
EVENING STAR 9200 26.8 27.2 99 28.9 23.3 124
FISHER CREEK 9100 30.6 32.2 95 29.4 33.3 88
NORTHEAST ENTRANCE 7350 9.5 10.6 90 11.5 11.6 99
PARKER PEAK 9400 20.8 19.8 105 20.7 14.8 140
SYLVAN LAKE 8420 16.8 20.5 82 21.9 19.3 113
THUMB DIVIDE 7980 14.5 17.3 84 15.4 17.4 89
TWO OCEAN PLATEAU 9240 29.7 25.4 117 25.4 25.4 100
WHITE MILL 8700 19.8 22.2 89 20.8 24.7 84
WOLVERINE 7650 12.5 11.3 111 12.2 11.9 103
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Basin wide percent of average 97 100
WIND RIVER
BURROUGHS CREEK 8750 13.5 13.5 100 14.0 14.8 95
CASTLE CREEK 8400 7.6 -M * 8.5 -M *
COLD SPRINGS 9630 8.0 8.0 100 9.2 9.2 100
DEER PARK 9700 10.9 15.3 71 16.4 19.7 83
HOBBS PARK 10100 13.6 13.1 104 12.6 10.9 116
KIRWIN 9550 11.7 10.0 117 13.6 10.0 136
LITTLE WARM 9370 8.1 10.5 77 10.4 11.9 87
OWL CREEK 8975 4.9 4.6 107 5.6 4.9 114
SOUTH PASS 9040 13.1 15.3 86 13.1 16.4 80
ST. LAWRENCE ALT 8620 5.1 6.6 77 7.3 7.6 96
TOGWOTEE PASS 9580 19.8 22.6 88 21.7 22.4 97
TOWNSEND CREEK 8700 8.3 7.6 109 10.9 9.8 111
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Basin wide percent of average 92 98
BIGHORN BASIN
BALD MTN. 9380 19.6 17.5 112 14.4 15.4 94
BEAR TRAP MEADOW 8200 8.5 4.9 173 8.5 7.0 121
BONE SPRINGS DIV 9350 18.6 14.3 130 14.6 12.8 114
GRAVE SPRINGS 8550 8.4 8.2 102 9.7 8.6 113
KIRWIN 9550 11.7 10.0 117 13.6 10.0 136
MARQUETTE 8760 8.9 -M * 11.4 8.2 139
MIDDLE POWDER 7760 10.2 10.1 101 10.5 10.6 99
OWL CREEK 8975 4.9 4.6 107 5.6 4.9 114
POWDER RIVER PASS 9480 11.7 9.7 121 13.9 10.9 128
SHELL CREEK 9580 17.1 12.9 133 15.0 11.7 128
TIMBER CREEK 7950 4.8 4.8 100 8.5 6.1 139
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Basin wide percent of average 119 118
SHOSHONE RIVER
BLACKWATER 9780 22.8 22.3 102 22.6 18.6 122
EVENING STAR 9200 26.8 27.2 99 28.9 23.3 124
MARQUETTE 8760 8.9 -M * 11.4 8.2 139
SYLVAN ROAD 7120 12.4 12.1 102 16.6 16.5 101
YOUNTS PEAK 8350 15.4 15.6 99 14.8 14.7 101
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Basin wide percent of average 100 116
POWDER RIVER
BEAR TRAP MEADOW 8200 8.5 4.9 173 8.5 7.0 121
CLOUD PEAK RESERVOIR 9860 15.9 11.3 141 14.8 10.8 137
GRAVE SPRINGS 8550 8.4 8.2 102 9.7 8.6 113
HANSEN SAWMILL 8360 6.0 5.8 103 8.3 7.0 119
MIDDLE POWDER 7760 10.2 10.1 101 10.5 10.6 99
POWDER RIVER PASS 9480 11.7 9.7 121 13.9 10.9 128
SOLDIER PARK 8720 13.0 -M * 9.6 -M *
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Basin wide percent of average 121 120
TONGUE RIVER
BIG GOOSE 7990 9.7 8.6 113 13.5 7.3 185
BONE SPRINGS DIV 9350 18.6 14.3 130 14.6 12.8 114
BURGESS JUNCTION 7880 11.8 9.9 119 13.9 10.5 132
DOME LAKE 8880 14.3 10.5 136 14.3 11.2 128
LITTLE GOOSE 8870 10.7 -M * 15.4 -M *
SUCKER CREEK 8880 14.0 10.1 139 14.6 11.6 126
TIE CREEK 6870 7.0 5.8 121 13.3 8.6 155
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Basin wide percent of average 127 136
BELLE FOURCHE
COLE CANYON 5910 6.4 6.2 103 8.1 6.0 135
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Basin wide percent of average 103 135
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.7 8.3 93 9.9 10.0 99
NORTH RAPID CREEK 6130 7.2 7.4 97 7.9 7.9 100
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Basin wide percent of average 95 99
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.3 -M * 22.8 -M *
COLUMBINE 9160 18.4 23.7 78 19.2 22.8 84
DIVIDE PEAK 8880 13.9 17.5 79 18.0 18.7 96
JOE WRIGHT 10120 13.4 18.9 71 18.3 22.1 83
LAPRELE CREEK 8375 8.9 9.9 90 11.5 11.0 105
NORTH FRENCH CREEK 10130 19.0 25.3 75 18.7 22.1 85
NEVER SUMMER 10280 11.7 18.0 65 10.8 21.0 51
OLD BATTLE 10000 21.7 29.0 75 25.7 31.3 82
RAWAH 9020 7.8 13.4 58 10.5 14.5 72
SAGE CREEK BASIN 7850 13.2 10.2 129 9.8 10.8 91
SAND LAKE 10050 22.8 28.4 80 22.5 21.2 106
SOUTH BRUSH CREEK 8440 7.1 11.5 62 10.9 14.5 75
TOWER 10500 28.6 40.9 70 29.7 34.8 85
WEBBER SPRINGS 9250 16.4 24.1 68 20.3 24.0 85
WILLOW CREEK PASS 9540 -M 10.6 * 9.2 11.4 81
ZIRKEL 9340 24.1 24.4 99 -M 23.5 *
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Basin wide percent of average 77 84
SWEETWATER
DEER PARK 9700 10.9 15.3 71 16.4 19.7 83
LARSEN CREEK 9000 11.1 -M * 12.7 -M *
SOUTH PASS 9040 13.1 15.3 86 13.1 16.4 80
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Basin wide percent of average 78 82
LOWER N. PLATTE
CASPER MTN. 7900 17.6 12.4 142 17.0 12.3 138
LAPRELE CREEK 8375 8.9 9.9 90 11.5 11.0 105
RENO HILL 8400 15.0 11.9 126 16.7 12.8 130
WINDY PEAK 7900 6.9 7.1 97 8.6 9.3 92
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Basin wide percent of average 117 119
LARAMIE RIVER
BROOKLYN LAKE 10240 17.2 20.9 82 18.5 19.3 96
CINNABAR PARK 9574 14.6 17.0 86 19.3 18.4 105
CROW CREEK 8330 7.7 8.0 96 10.1 8.7 116
DEADMAN HILL 10220 16.3 14.3 114 15.0 14.8 101
RAWAH 9020 7.8 13.4 58 10.5 14.5 72
ROACH 9700 12.6 15.2 83 15.7 16.5 95
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Basin wide percent of average 86 97
S. PLATTE
BLACK MOUNTAIN 8920 10.0 -M * 12.3 -M *
CROW CREEK 8330 7.7 8.0 96 10.1 8.7 116
DEADMAN HILL 10220 16.3 14.3 114 15.0 14.8 101
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Basin wide percent of average 108 107
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.4 11.1 103 11.0 13.8 80
DIVIDE PEAK 8880 13.9 17.5 79 18.0 18.7 96
ELK RIVER 8700 13.9 17.6 79 14.7 17.6 84
LITTLE SNAKE RIVER 8915 19.2 -M * 23.5 -M *
OLD BATTLE 10000 21.7 29.0 75 25.7 31.3 82
SAGE CREEK BASIN 7850 13.2 10.2 129 9.8 10.8 91
SANDSTONE RS 8150 10.3 14.1 73 11.9 17.1 70
WHISKEY PARK 8950 21.0 27.0 78 23.4 25.7 91
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Basin wide percent of average 83 85
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 13.2 94 12.4 12.3 101
BLIND BULL SUM 8650 21.0 25.5 82 16.3 20.5 80
EAST RIM DIVIDE 7930 11.0 12.1 91 11.0 11.1 99
ELKHART PARK G.S. 9400 12.2 12.2 100 13.1 12.0 109
GROS VENTRE SUMMIT 8750 9.0 12.8 70 9.7 11.7 83
GUNSIGHT PASS 9820 11.2 -M * 12.4 -M *
KENDALL R.S. 7740 14.0 13.8 101 14.6 13.6 107
LOOMIS PARK 8240 13.4 16.1 83 15.6 16.0 98
NEW FORK LAKE 8340 10.9 10.4 105 10.1 10.4 97
POCKET CREEK 9360 9.1 -M * 11.3 -M *
SNIDER BASIN 8060 12.4 13.5 92 12.6 14.8 85
SPRING CREEK DIVIDE 9000 21.4 24.3 88 21.4 24.2 88
TRIPLE PEAK 8500 21.2 22.9 93 24.0 22.6 106
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Basin wide percent of average 90 95
LOWER GREEN RIVER
BLACKS FORK JCT 8870 5.2 -M * 9.7 -M *
BUCK PASTURE 9700 .1 -M * 3.0 -M *
EF BLACKS FORK GS 9308 9.0 -M * 8.5 -M *
HAMS FORK 7840 9.6 12.2 79 8.9 11.2 79
HEWINTA 9519 9.1 10.3 88 11.2 12.8 88
HICKERSON PARK 9145 8.0 6.4 125 11.1 6.9 161
HOLE-IN-ROCK 9150 7.7 6.3 122 10.8 6.4 169
INDIAN CREEK 9425 18.7 24.9 75 16.7 22.9 73
KELLEY R.S. 8180 12.0 15.5 77 14.2 18.5 77
SPIRIT LK 10223 9.8 -M * 15.3 -M *
STEEL CREEK PARK 10200 -M 14.1 * 12.7 14.2 89
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Basin wide percent of average 86 92
UPPER BEAR RIVER
BEAR RIVER RS 8500 5.8 -M * 9.1 -M *
BUG LAKE 7950 14.3 19.0 75 14.6 17.5 83
BURTS MILLER RANCH 8000 5.3 -M * 9.4 -M *
CHALK CREEK #1 8993 14.4 22.3 65 16.7 22.6 74
HAYDEN FORK 9212 10.4 14.7 71 15.7 18.7 84
KELLEY R.S. 8180 12.0 15.5 77 14.2 18.5 77
LILY LAKE 9156 9.3 11.8 79 10.8 15.6 69
MONTE CRISTO 8960 17.6 27.4 64 17.5 23.1 76
SALT RIVER SUMMIT 7760 10.5 13.3 79 11.2 17.1 65
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Basin wide percent of average 71 76
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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.