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 FRIDAY: MARCH 23 , 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 19.6 17.9 109 23.6 20.8 113
BLACK BEAR 8170 38.8 38.0 102 38.7 38.9 99
BLIND BULL SUM 8650 22.0 27.1 81 16.9 21.5 79
COTTONWOOD CREEK 7670 18.4 23.0 80 23.9 26.4 91
EAST RIM DIVIDE 7930 11.0 12.7 87 11.4 11.7 97
GRAND TARGHEE 9260 36.0 -M * 28.6 -M *
GRANITE CREEK 6770 15.4 18.5 83 16.4 19.5 84
GRASSY LAKE 7265 32.6 34.5 94 36.1 34.9 103
GROS VENTRE SUMMIT 8750 9.8 13.7 72 10.4 12.4 84
GUNSIGHT PASS 9820 12.6 -M * 13.7 -M *
LEWIS LAKE DIVIDE 7850 31.0 34.4 90 33.2 35.7 93
PHILLIPS BENCH 8200 23.7 27.9 85 25.0 28.1 89
SALT RIVER SUMMIT 7760 10.4 14.0 74 11.4 18.0 63
SNAKE RIVER STATION 6920 17.4 18.9 92 24.0 21.7 111
SPRING CREEK DIVIDE 9000 22.2 25.6 87 22.0 25.5 86
THUMB DIVIDE 7980 16.5 18.5 89 17.4 18.3 95
TOGWOTEE PASS 9580 21.4 23.9 90 23.2 23.6 98
TWO OCEAN PLATEAU 9240 31.7 26.9 118 26.9 26.8 100
WILLOW CREEK 8380 24.9 29.3 85 30.4 31.0 98
YOUNTS PEAK 8350 16.0 16.5 97 15.2 15.5 98
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Basin wide percent of average 91 94
MADISON-GALLATIN
BLACK BEAR 8170 38.8 38.0 102 38.7 38.9 99
CANYON 7870 12.3 13.3 92 14.3 14.9 96
MADISON PLATEAU 7750 24.4 24.1 101 28.4 25.6 111
WEST YELLOWSTONE 6700 11.4 12.4 92 16.3 12.5 130
WHISKEY CREEK 6800 16.3 16.5 99 21.2 20.2 105
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Basin wide percent of average 99 106
YELLOWSTONE
BEARTOOTH LAKE 9360 23.8 22.7 105 23.1 19.4 119
BURNT MTN 5880 3.6 5.9 61 11.3 14.0 81
CANYON 7870 12.3 13.3 92 14.3 14.9 96
COLE CREEK 7850 14.3 14.6 98 11.3 15.2 74
EVENING STAR 9200 28.4 28.6 99 30.8 24.4 126
FISHER CREEK 9100 34.0 33.6 101 32.4 35.1 92
NORTHEAST ENTRANCE 7350 10.0 11.0 91 -M 12.2 *
PARKER PEAK 9400 22.6 20.8 109 22.1 15.6 142
SYLVAN LAKE 8420 18.4 21.7 85 23.9 20.2 118
THUMB DIVIDE 7980 16.5 18.5 89 17.4 18.3 95
TWO OCEAN PLATEAU 9240 31.7 26.9 118 26.9 26.8 100
WHITE MILL 8700 21.8 23.3 94 22.6 26.1 87
WOLVERINE 7650 11.4 11.5 99 12.7 12.4 102
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Basin wide percent of average 99 103
WIND RIVER
BURROUGHS CREEK 8750 13.9 14.2 98 14.2 15.6 91
CASTLE CREEK 8400 7.4 -M * 8.6 -M *
COLD SPRINGS 9630 7.9 8.5 93 9.1 9.9 92
DEER PARK 9700 10.9 16.3 67 16.6 20.8 80
HOBBS PARK 10100 14.2 13.9 102 12.8 11.9 108
KIRWIN 9550 12.0 10.7 112 13.9 10.6 131
LITTLE WARM 9370 8.8 11.2 79 10.9 12.6 87
OWL CREEK 8975 4.7 5.2 90 5.6 5.3 106
SOUTH PASS 9040 13.3 16.1 83 13.1 17.5 75
ST. LAWRENCE ALT 8620 3.8 6.9 55 7.3 8.2 89
TOGWOTEE PASS 9580 21.4 23.9 90 23.2 23.6 98
TOWNSEND CREEK 8700 8.1 8.1 100 11.0 10.7 103
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Basin wide percent of average 88 94
BIGHORN BASIN
BALD MTN. 9380 20.6 18.6 111 15.3 16.4 93
BEAR TRAP MEADOW 8200 8.2 5.2 158 8.7 7.6 114
BONE SPRINGS DIV 9350 19.4 15.3 127 15.3 13.7 112
GRAVE SPRINGS 8550 8.5 8.8 97 10.1 9.1 111
KIRWIN 9550 12.0 10.7 112 13.9 10.6 131
MARQUETTE 8760 9.3 -M * 11.5 8.9 129
MIDDLE POWDER 7760 10.5 11.0 95 10.5 11.5 91
OWL CREEK 8975 4.7 5.2 90 5.6 5.3 106
POWDER RIVER PASS 9480 12.1 10.3 117 15.0 11.6 129
SHELL CREEK 9580 17.9 13.9 129 15.5 12.5 124
TIMBER CREEK 7950 3.7 5.3 70 8.7 6.7 130
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Basin wide percent of average 113 114
SHOSHONE RIVER
BLACKWATER 9780 23.9 23.5 102 23.7 19.6 121
EVENING STAR 9200 28.4 28.6 99 30.8 24.4 126
MARQUETTE 8760 9.3 -M * 11.5 8.9 129
SYLVAN ROAD 7120 12.3 12.5 98 17.7 17.1 104
YOUNTS PEAK 8350 16.0 16.5 97 15.2 15.5 98
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Basin wide percent of average 99 116
POWDER RIVER
BEAR TRAP MEADOW 8200 8.2 5.2 158 8.7 7.6 114
CLOUD PEAK RESERVOIR 9860 16.1 12.4 130 14.7 11.8 125
GRAVE SPRINGS 8550 8.5 8.8 97 10.1 9.1 111
HANSEN SAWMILL 8360 5.3 6.3 84 8.3 7.6 109
MIDDLE POWDER 7760 10.5 11.0 95 10.5 11.5 91
POWDER RIVER PASS 9480 12.1 10.3 117 15.0 11.6 129
SOLDIER PARK 8720 13.0 -M * 9.7 -M *
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Basin wide percent of average 112 114
TONGUE RIVER
BIG GOOSE 7990 9.1 9.5 96 13.5 7.9 171
BONE SPRINGS DIV 9350 19.4 15.3 127 15.3 13.7 112
BURGESS JUNCTION 7880 12.1 10.8 112 13.8 11.3 122
DOME LAKE 8880 14.5 11.5 126 14.3 12.2 117
LITTLE GOOSE 8870 10.4 -M * 15.5 -M *
SUCKER CREEK 8880 13.4 11.0 122 14.7 12.6 117
TIE CREEK 6870 4.1 5.9 69 13.4 9.2 146
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Basin wide percent of average 113 127
BELLE FOURCHE
COLE CANYON 5910 4.1 6.6 62 7.9 6.3 125
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Basin wide percent of average 62 125
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.1 8.7 47 9.9 10.6 93
NORTH RAPID CREEK 6130 5.2 7.9 66 7.7 8.2 94
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Basin wide percent of average 56 94
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.2 -M * 23.1 -M *
COLUMBINE 9160 16.8 24.5 69 19.3 24.1 80
DIVIDE PEAK 8880 13.8 18.9 73 18.6 19.8 94
JOE WRIGHT 10120 13.7 20.1 68 18.4 23.5 78
LAPRELE CREEK 8375 8.8 10.6 83 11.5 11.8 97
NORTH FRENCH CREEK 10130 19.5 27.4 71 19.2 23.5 82
NEVER SUMMER 10280 11.9 19.1 62 10.9 22.3 49
OLD BATTLE 10000 22.5 30.8 73 26.8 33.1 81
RAWAH 9020 6.9 14.2 49 10.8 15.5 70
SAGE CREEK BASIN 7850 10.7 11.0 97 10.2 11.5 89
SAND LAKE 10050 22.8 30.7 74 22.6 22.7 100
SOUTH BRUSH CREEK 8440 7.2 12.5 58 11.5 15.4 75
TOWER 10500 29.0 43.4 67 30.4 36.7 83
WEBBER SPRINGS 9250 17.0 25.6 66 21.0 25.5 82
WILLOW CREEK PASS 9540 -M 11.3 * 9.2 12.1 76
ZIRKEL 9340 22.2 25.2 88 24.2 24.8 98
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Basin wide percent of average 71 82
SWEETWATER
DEER PARK 9700 10.9 16.3 67 16.6 20.8 80
LARSEN CREEK 9000 10.7 -M * 13.0 -M *
SOUTH PASS 9040 13.3 16.1 83 13.1 17.5 75
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Basin wide percent of average 75 78
LOWER N. PLATTE
CASPER MTN. 7900 17.6 13.4 131 17.6 13.3 132
LAPRELE CREEK 8375 8.8 10.6 83 11.5 11.8 97
RENO HILL 8400 14.9 13.0 115 17.0 13.8 123
WINDY PEAK 7900 6.6 7.7 86 8.6 9.9 87
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Basin wide percent of average 107 112
LARAMIE RIVER
BROOKLYN LAKE 10240 16.8 22.3 75 18.5 20.8 89
CINNABAR PARK 9574 15.1 17.5 86 19.3 19.2 101
CROW CREEK 8330 6.7 8.5 79 10.0 9.4 106
DEADMAN HILL 10220 16.1 15.3 105 14.9 15.9 94
RAWAH 9020 6.9 14.2 49 10.8 15.5 70
ROACH 9700 12.9 16.1 80 15.8 17.7 89
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Basin wide percent of average 79 91
S. PLATTE
BLACK MOUNTAIN 8920 10.1 -M * 12.2 -M *
CROW CREEK 8330 6.7 8.5 79 10.0 9.4 106
DEADMAN HILL 10220 16.1 15.3 105 14.9 15.9 94
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Basin wide percent of average 96 98
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 9.2 11.5 80 11.7 14.9 79
DIVIDE PEAK 8880 13.8 18.9 73 18.6 19.8 94
ELK RIVER 8700 13.7 18.6 74 15.2 18.7 81
LITTLE SNAKE RIVER 8915 18.5 -M * 23.9 -M *
OLD BATTLE 10000 22.5 30.8 73 26.8 33.1 81
SAGE CREEK BASIN 7850 10.7 11.0 97 10.2 11.5 89
SANDSTONE RS 8150 9.5 14.9 64 12.1 18.0 67
WHISKEY PARK 8950 20.2 29.1 69 23.7 27.3 87
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Basin wide percent of average 74 83
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.9 14.0 92 12.8 12.9 99
BLIND BULL SUM 8650 22.0 27.1 81 16.9 21.5 79
EAST RIM DIVIDE 7930 11.0 12.7 87 11.4 11.7 97
ELKHART PARK G.S. 9400 13.2 12.9 102 14.1 12.7 111
GROS VENTRE SUMMIT 8750 9.8 13.7 72 10.4 12.4 84
GUNSIGHT PASS 9820 12.6 -M * 13.7 -M *
KENDALL R.S. 7740 13.9 14.5 96 14.9 14.2 105
LOOMIS PARK 8240 13.7 17.0 81 16.2 16.8 96
NEW FORK LAKE 8340 11.4 10.9 105 10.5 10.9 96
POCKET CREEK 9360 9.7 -M * 11.6 -M *
SNIDER BASIN 8060 12.6 14.2 89 12.8 15.5 83
SPRING CREEK DIVIDE 9000 22.2 25.6 87 22.0 25.5 86
TRIPLE PEAK 8500 21.9 24.2 90 24.5 23.9 103
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Basin wide percent of average 88 94
LOWER GREEN RIVER
BLACKS FORK JCT 8870 4.8 -M * 10.3 -M *
BUCK PASTURE 9700 .1 -M * 3.7 -M *
EF BLACKS FORK GS 9308 9.2 -M * 9.0 -M *
HAMS FORK 7840 9.5 12.4 77 9.4 11.8 80
HEWINTA 9519 9.7 11.2 87 12.1 13.7 88
HICKERSON PARK 9145 9.0 7.0 129 11.8 7.4 159
HOLE-IN-ROCK 9150 8.3 6.7 124 11.7 6.9 170
INDIAN CREEK 9425 20.0 26.7 75 17.3 24.3 71
KELLEY R.S. 8180 12.6 16.4 77 14.7 19.5 75
SPIRIT LK 10223 11.5 -M * 17.3 -M *
STEEL CREEK PARK 10200 9.6 15.0 64 13.9 15.2 91
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Basin wide percent of average 82 92
UPPER BEAR RIVER
BEAR RIVER RS 8500 5.3 -M * 9.7 -M *
BUG LAKE 7950 14.8 20.2 73 15.2 18.5 82
BURTS MILLER RANCH 8000 4.8 -M * 9.8 -M *
CHALK CREEK #1 8993 15.0 23.8 63 17.8 24.0 74
HAYDEN FORK 9212 10.4 15.8 66 17.0 20.0 85
KELLEY R.S. 8180 12.6 16.4 77 14.7 19.5 75
LILY LAKE 9156 9.3 12.5 74 11.6 16.6 70
MONTE CRISTO 8960 18.1 29.0 62 18.2 24.4 75
SALT RIVER SUMMIT 7760 10.4 14.0 74 11.4 18.0 63
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Basin wide percent of average 69 75
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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.