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 TUESDAY: MARCH 27 , 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 18.1 104 23.6 21.2 111
BLACK BEAR 8170 39.3 38.7 102 39.4 39.8 99
BLIND BULL SUM 8650 22.3 27.7 81 17.0 21.9 78
COTTONWOOD CREEK 7670 18.3 23.6 78 24.2 27.0 90
EAST RIM DIVIDE 7930 10.0 13.0 77 11.4 11.9 96
GRAND TARGHEE 9260 36.2 -M * 28.9 -M *
GRANITE CREEK 6770 14.6 18.7 78 16.4 19.8 83
GRASSY LAKE 7265 32.3 35.3 92 36.7 35.6 103
GROS VENTRE SUMMIT 8750 9.4 14.0 67 10.4 12.7 82
GUNSIGHT PASS 9820 12.4 -M * 13.8 -M *
LEWIS LAKE DIVIDE 7850 31.3 35.1 89 33.3 36.4 91
PHILLIPS BENCH 8200 23.8 28.5 84 25.1 28.7 87
SALT RIVER SUMMIT 7760 10.1 14.3 71 11.4 18.5 62
SNAKE RIVER STATION 6920 16.1 19.1 84 24.3 22.0 110
SPRING CREEK DIVIDE 9000 22.5 26.2 86 22.1 26.1 85
THUMB DIVIDE 7980 16.4 18.9 87 17.5 18.6 94
TOGWOTEE PASS 9580 21.4 24.5 87 23.5 24.2 97
TWO OCEAN PLATEAU 9240 31.8 27.6 115 27.1 27.3 99
WILLOW CREEK 8380 24.4 30.0 81 31.0 31.7 98
YOUNTS PEAK 8350 15.9 16.9 94 15.3 15.8 97
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Basin wide percent of average 88 93
MADISON-GALLATIN
BLACK BEAR 8170 39.3 38.7 102 39.4 39.8 99
CANYON 7870 12.2 13.5 90 14.3 15.2 94
MADISON PLATEAU 7750 24.5 24.7 99 28.9 26.3 110
WEST YELLOWSTONE 6700 10.4 12.7 82 16.6 12.9 129
WHISKEY CREEK 6800 16.1 16.9 95 21.4 20.7 103
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Basin wide percent of average 96 105
YELLOWSTONE
BEARTOOTH LAKE 9360 23.9 23.1 103 23.2 19.8 117
BURNT MTN 5880 2.0 6.0 33 11.4 14.6 78
CANYON 7870 12.2 13.5 90 14.3 15.2 94
COLE CREEK 7850 14.0 15.3 92 11.2 15.8 71
EVENING STAR 9200 27.9 29.3 95 30.9 24.9 124
FISHER CREEK 9100 34.4 34.5 100 32.7 35.9 91
NORTHEAST ENTRANCE 7350 8.9 11.2 79 -M 12.5 *
PARKER PEAK 9400 22.9 21.3 108 22.3 16.0 139
SYLVAN LAKE 8420 17.9 22.2 81 24.0 20.6 117
THUMB DIVIDE 7980 16.4 18.9 87 17.5 18.6 94
TWO OCEAN PLATEAU 9240 31.8 27.6 115 27.1 27.3 99
WHITE MILL 8700 22.1 23.9 92 22.8 26.6 86
WOLVERINE 7650 10.7 11.5 93 12.7 12.6 101
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Basin wide percent of average 95 101
WIND RIVER
BURROUGHS CREEK 8750 13.9 14.5 96 14.3 16.0 89
CASTLE CREEK 8400 6.8 -M * 8.6 -M *
COLD SPRINGS 9630 6.7 8.7 77 9.1 10.2 89
DEER PARK 9700 10.9 16.6 66 16.7 21.3 78
HOBBS PARK 10100 13.7 14.4 95 12.6 12.3 102
KIRWIN 9550 12.0 11.0 109 13.8 10.9 127
LITTLE WARM 9370 8.3 11.6 72 11.1 13.0 85
OWL CREEK 8975 3.8 5.3 72 5.5 5.6 98
SOUTH PASS 9040 13.0 16.3 80 13.2 18.0 73
ST. LAWRENCE ALT 8620 1.7 7.0 24 7.3 8.5 86
TOGWOTEE PASS 9580 21.4 24.5 87 23.5 24.2 97
TOWNSEND CREEK 8700 7.3 8.3 88 11.0 11.1 99
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Basin wide percent of average 82 91
BIGHORN BASIN
BALD MTN. 9380 20.5 19.1 107 15.3 16.9 91
BEAR TRAP MEADOW 8200 7.0 5.2 135 8.7 7.9 110
BONE SPRINGS DIV 9350 18.1 15.8 115 15.3 14.1 109
GRAVE SPRINGS 8550 8.2 9.0 91 10.1 9.4 107
KIRWIN 9550 12.0 11.0 109 13.8 10.9 127
MARQUETTE 8760 8.5 -M * 11.4 9.3 123
MIDDLE POWDER 7760 10.1 11.3 89 10.5 11.9 88
OWL CREEK 8975 3.8 5.3 72 5.5 5.6 98
POWDER RIVER PASS 9480 11.4 10.5 109 15.0 11.9 126
SHELL CREEK 9580 18.0 14.3 126 15.7 12.9 122
TIMBER CREEK 7950 2.5 5.4 46 8.7 7.0 124
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Basin wide percent of average 104 110
SHOSHONE RIVER
BLACKWATER 9780 24.0 24.0 100 23.8 20.1 118
EVENING STAR 9200 27.9 29.3 95 30.9 24.9 124
MARQUETTE 8760 8.5 -M * 11.4 9.3 123
SYLVAN ROAD 7120 10.7 12.6 85 17.5 17.4 101
YOUNTS PEAK 8350 15.9 16.9 94 15.3 15.8 97
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Basin wide percent of average 95 113
POWDER RIVER
BEAR TRAP MEADOW 8200 7.0 5.2 135 8.7 7.9 110
CLOUD PEAK RESERVOIR 9860 14.5 12.8 113 14.8 12.3 120
GRAVE SPRINGS 8550 8.2 9.0 91 10.1 9.4 107
HANSEN SAWMILL 8360 3.8 6.3 60 8.4 7.8 108
MIDDLE POWDER 7760 10.1 11.3 89 10.5 11.9 88
POWDER RIVER PASS 9480 11.4 10.5 109 15.0 11.9 126
SOLDIER PARK 8720 11.4 -M * 9.7 -M *
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Basin wide percent of average 100 110
TONGUE RIVER
BIG GOOSE 7990 9.0 10.0 90 13.5 8.2 165
BONE SPRINGS DIV 9350 18.1 15.8 115 15.3 14.1 109
BURGESS JUNCTION 7880 11.4 11.2 102 13.8 11.7 118
DOME LAKE 8880 13.8 11.9 116 14.2 12.6 113
LITTLE GOOSE 8870 9.2 -M * 15.5 -M *
SUCKER CREEK 8880 12.6 11.3 112 14.6 13.0 112
TIE CREEK 6870 1.7 5.7 30 13.4 9.5 141
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Basin wide percent of average 101 123
BELLE FOURCHE
COLE CANYON 5910 2.4 6.7 36 8.0 6.5 123
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Basin wide percent of average 36 123
CHEYENNE RIVER BASIN
BLIND PARK 6890 1.4 8.5 16 10.2 10.8 94
NORTH RAPID CREEK 6130 3.1 8.0 39 7.8 8.4 93
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Basin wide percent of average 27 94
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.4 -M * 23.0 -M *
COLUMBINE 9160 14.8 24.8 60 19.3 24.7 78
DIVIDE PEAK 8880 12.5 19.4 64 18.5 20.3 91
JOE WRIGHT 10120 12.6 20.7 61 18.4 24.1 76
LAPRELE CREEK 8375 8.2 10.8 76 11.5 12.2 94
NORTH FRENCH CREEK 10130 18.4 28.3 65 19.2 24.0 80
NEVER SUMMER 10280 11.4 19.7 58 10.9 22.9 48
OLD BATTLE 10000 22.2 31.5 70 26.7 33.9 79
RAWAH 9020 5.5 14.6 38 10.8 16.0 68
SAGE CREEK BASIN 7850 7.6 11.3 67 10.2 11.8 86
SAND LAKE 10050 22.7 31.6 72 22.5 23.4 96
SOUTH BRUSH CREEK 8440 5.4 12.8 42 11.6 15.9 73
TOWER 10500 28.5 44.5 64 30.2 37.6 80
WEBBER SPRINGS 9250 15.9 26.1 61 20.9 26.1 80
WILLOW CREEK PASS 9540 -M 11.6 * 9.2 12.4 74
ZIRKEL 9340 20.4 25.5 80 -M 25.4 *
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Basin wide percent of average 64 79
SWEETWATER
DEER PARK 9700 10.9 16.6 66 16.7 21.3 78
LARSEN CREEK 9000 10.4 -M * 13.4 -M *
SOUTH PASS 9040 13.0 16.3 80 13.2 18.0 73
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Basin wide percent of average 73 76
LOWER N. PLATTE
CASPER MTN. 7900 17.4 13.9 125 17.6 13.8 128
LAPRELE CREEK 8375 8.2 10.8 76 11.5 12.2 94
RENO HILL 8400 14.4 13.6 106 16.9 14.3 118
WINDY PEAK 7900 6.0 7.9 76 8.6 10.2 84
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Basin wide percent of average 100 108
LARAMIE RIVER
BROOKLYN LAKE 10240 16.3 23.0 71 18.6 21.4 87
CINNABAR PARK 9574 14.6 17.8 82 19.2 19.6 98
CROW CREEK 8330 5.3 8.7 61 9.9 9.6 103
DEADMAN HILL 10220 15.9 15.8 101 14.9 16.4 91
RAWAH 9020 5.5 14.6 38 10.8 16.0 68
ROACH 9700 12.5 16.6 75 15.8 18.1 87
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Basin wide percent of average 73 88
S. PLATTE
BLACK MOUNTAIN 8920 9.8 -M * 12.2 -M *
CROW CREEK 8330 5.3 8.7 61 9.9 9.6 103
DEADMAN HILL 10220 15.9 15.8 101 14.9 16.4 91
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Basin wide percent of average 87 95
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 6.9 11.4 61 11.7 15.4 76
DIVIDE PEAK 8880 12.5 19.4 64 18.5 20.3 91
ELK RIVER 8700 11.7 19.1 61 15.2 19.1 80
LITTLE SNAKE RIVER 8915 16.5 -M * 23.8 -M *
OLD BATTLE 10000 22.2 31.5 70 26.7 33.9 79
SAGE CREEK BASIN 7850 7.6 11.3 67 10.2 11.8 86
SANDSTONE RS 8150 7.9 15.0 53 11.9 18.4 65
WHISKEY PARK 8950 18.8 29.8 63 23.6 28.0 84
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Basin wide percent of average 64 80
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.3 14.3 93 13.3 13.1 102
BLIND BULL SUM 8650 22.3 27.7 81 17.0 21.9 78
EAST RIM DIVIDE 7930 10.0 13.0 77 11.4 11.9 96
ELKHART PARK G.S. 9400 13.6 13.2 103 14.7 13.0 113
GROS VENTRE SUMMIT 8750 9.4 14.0 67 10.4 12.7 82
GUNSIGHT PASS 9820 12.4 -M * 13.8 -M *
KENDALL R.S. 7740 13.5 14.6 92 15.0 14.4 104
LOOMIS PARK 8240 13.3 17.3 77 16.3 17.2 95
NEW FORK LAKE 8340 10.7 11.1 96 10.5 11.1 95
POCKET CREEK 9360 9.9 -M * 12.0 -M *
SNIDER BASIN 8060 12.2 14.5 84 12.8 15.9 81
SPRING CREEK DIVIDE 9000 22.5 26.2 86 22.1 26.1 85
TRIPLE PEAK 8500 21.4 24.7 87 24.6 24.4 101
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Basin wide percent of average 85 93
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.8 -M * 10.5 -M *
BUCK PASTURE 9700 .1 -M * 3.9 -M *
EF BLACKS FORK GS 9308 7.5 -M * 9.0 -M *
HAMS FORK 7840 8.5 12.3 69 9.4 12.0 78
HEWINTA 9519 7.9 11.6 68 12.2 14.2 86
HICKERSON PARK 9145 7.3 7.2 101 11.8 7.7 153
HOLE-IN-ROCK 9150 6.9 6.9 100 11.8 7.2 164
INDIAN CREEK 9425 19.6 27.4 72 17.4 24.9 70
KELLEY R.S. 8180 12.9 16.7 77 15.0 20.0 75
SPIRIT LK 10223 11.2 -M * 17.4 -M *
STEEL CREEK PARK 10200 10.1 15.4 66 14.2 15.7 90
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Basin wide percent of average 75 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 3.7 -M * 9.9 -M *
BUG LAKE 7950 14.5 20.7 70 15.4 18.9 81
BURTS MILLER RANCH 8000 3.5 -M * 9.8 -M *
CHALK CREEK #1 8993 15.0 24.4 61 18.2 24.6 74
HAYDEN FORK 9212 9.5 16.2 59 17.3 20.5 84
KELLEY R.S. 8180 12.9 16.7 77 15.0 20.0 75
LILY LAKE 9156 8.5 12.8 66 11.8 17.0 69
MONTE CRISTO 8960 17.3 29.5 59 18.4 25.0 74
SALT RIVER SUMMIT 7760 10.1 14.3 71 11.4 18.5 62
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Basin wide percent of average 65 74
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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.