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 16 , 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 18.7 17.4 107 22.3 20.2 110
BLACK BEAR 8170 33.5 36.6 92 33.5 37.2 90
BLIND BULL SUM 8650 21.3 25.9 82 16.5 20.7 80
COTTONWOOD CREEK 7670 18.0 21.7 83 22.9 25.3 91
EAST RIM DIVIDE 7930 10.6 12.2 87 11.0 11.2 98
GRAND TARGHEE 9260 32.9 -M * 26.6 -M *
GRANITE CREEK 6770 15.6 18.0 87 15.9 18.9 84
GRASSY LAKE 7265 30.9 33.0 94 34.1 33.8 101
GROS VENTRE SUMMIT 8750 9.3 13.0 72 9.8 11.9 82
GUNSIGHT PASS 9820 11.3 -M * 12.5 -M *
LEWIS LAKE DIVIDE 7850 28.9 33.0 88 31.5 34.5 91
PHILLIPS BENCH 8200 22.7 26.7 85 24.1 27.0 89
SALT RIVER SUMMIT 7760 10.4 13.4 78 11.2 17.3 65
SNAKE RIVER STATION 6920 17.0 18.4 92 23.1 21.0 110
SPRING CREEK DIVIDE 9000 21.5 24.6 87 21.5 24.5 88
THUMB DIVIDE 7980 15.5 17.6 88 16.2 17.6 92
TOGWOTEE PASS 9580 20.2 22.9 88 22.1 22.7 97
TWO OCEAN PLATEAU 9240 30.5 25.7 119 25.9 25.8 100
WILLOW CREEK 8380 24.3 28.2 86 29.1 29.7 98
YOUNTS PEAK 8350 15.8 15.8 100 15.0 14.9 101
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Basin wide percent of average 90 93
MADISON-GALLATIN
BLACK BEAR 8170 33.5 36.6 92 33.5 37.2 90
CANYON 7870 11.3 12.8 88 12.9 14.3 90
MADISON PLATEAU 7750 21.2 23.3 91 24.9 24.5 102
WEST YELLOWSTONE 6700 10.5 12.2 86 14.1 11.9 118
WHISKEY CREEK 6800 14.3 16.0 89 17.9 19.4 92
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Basin wide percent of average 90 96
YELLOWSTONE
BEARTOOTH LAKE 9360 23.0 22.0 105 22.3 18.7 119
BURNT MTN 5880 5.0 5.6 89 10.4 13.0 80
CANYON 7870 11.3 12.8 88 12.9 14.3 90
COLE CREEK 7850 13.0 13.6 96 10.4 14.1 74
EVENING STAR 9200 27.4 27.5 100 29.4 23.6 125
FISHER CREEK 9100 31.9 32.5 98 30.6 33.7 91
NORTHEAST ENTRANCE 7350 9.7 10.6 92 -M 11.8 *
PARKER PEAK 9400 21.2 20.0 106 20.9 15.0 139
SYLVAN LAKE 8420 17.5 20.7 85 22.6 19.5 116
THUMB DIVIDE 7980 15.5 17.6 88 16.2 17.6 92
TWO OCEAN PLATEAU 9240 30.5 25.7 119 25.9 25.8 100
WHITE MILL 8700 20.2 22.5 90 21.2 25.0 85
WOLVERINE 7650 12.4 11.3 110 12.3 12.0 102
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Basin wide percent of average 98 101
WIND RIVER
BURROUGHS CREEK 8750 13.6 13.7 99 14.1 15.0 94
CASTLE CREEK 8400 7.4 -M * 8.6 -M *
COLD SPRINGS 9630 7.7 8.1 95 9.1 9.3 98
DEER PARK 9700 10.9 15.3 71 16.4 20.0 82
HOBBS PARK 10100 13.6 13.2 103 12.6 11.1 114
KIRWIN 9550 11.8 10.2 116 13.8 10.1 137
LITTLE WARM 9370 8.1 10.7 76 10.5 12.0 88
OWL CREEK 8975 4.8 4.7 102 5.6 5.0 112
SOUTH PASS 9040 13.0 15.4 84 13.1 16.6 79
ST. LAWRENCE ALT 8620 5.0 6.6 76 7.3 7.8 94
TOGWOTEE PASS 9580 20.2 22.9 88 22.1 22.7 97
TOWNSEND CREEK 8700 8.2 7.7 106 11.0 10.0 110
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Basin wide percent of average 91 97
BIGHORN BASIN
BALD MTN. 9380 19.5 17.7 110 14.4 15.6 92
BEAR TRAP MEADOW 8200 8.3 4.9 169 8.5 7.1 120
BONE SPRINGS DIV 9350 18.7 14.5 129 14.7 13.0 113
GRAVE SPRINGS 8550 8.3 8.2 101 9.7 8.8 110
KIRWIN 9550 11.8 10.2 116 13.8 10.1 137
MARQUETTE 8760 8.9 -M * 11.4 8.4 136
MIDDLE POWDER 7760 10.2 10.2 100 10.5 10.8 97
OWL CREEK 8975 4.8 4.7 102 5.6 5.0 112
POWDER RIVER PASS 9480 11.5 9.8 117 13.9 11.0 126
SHELL CREEK 9580 17.1 13.1 131 15.0 11.9 126
TIMBER CREEK 7950 4.7 4.9 96 8.5 6.2 137
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Basin wide percent of average 117 117
SHOSHONE RIVER
BLACKWATER 9780 23.2 22.6 103 22.8 18.8 121
EVENING STAR 9200 27.4 27.5 100 29.4 23.6 125
MARQUETTE 8760 8.9 -M * 11.4 8.4 136
SYLVAN ROAD 7120 12.3 12.2 101 16.8 16.6 101
YOUNTS PEAK 8350 15.8 15.8 100 15.0 14.9 101
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Basin wide percent of average 101 116
POWDER RIVER
BEAR TRAP MEADOW 8200 8.3 4.9 169 8.5 7.1 120
CLOUD PEAK RESERVOIR 9860 15.6 11.5 136 14.8 11.1 133
GRAVE SPRINGS 8550 8.3 8.2 101 9.7 8.8 110
HANSEN SAWMILL 8360 5.9 5.8 102 8.3 7.1 117
MIDDLE POWDER 7760 10.2 10.2 100 10.5 10.8 97
POWDER RIVER PASS 9480 11.5 9.8 117 13.9 11.0 126
SOLDIER PARK 8720 13.1 -M * 9.6 -M *
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Basin wide percent of average 119 118
TONGUE RIVER
BIG GOOSE 7990 9.6 8.8 109 13.5 7.4 182
BONE SPRINGS DIV 9350 18.7 14.5 129 14.7 13.0 113
BURGESS JUNCTION 7880 11.9 10.1 118 13.9 10.6 131
DOME LAKE 8880 14.2 10.7 133 14.2 11.4 125
LITTLE GOOSE 8870 10.6 -M * 15.4 -M *
SUCKER CREEK 8880 13.6 10.2 133 14.6 11.8 124
TIE CREEK 6870 6.5 5.8 112 13.3 8.7 153
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Basin wide percent of average 124 134
BELLE FOURCHE
COLE CANYON 5910 6.0 6.3 95 8.1 6.0 135
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Basin wide percent of average 95 135
CHEYENNE RIVER BASIN
BLIND PARK 6890 7.2 8.4 86 9.9 10.2 97
NORTH RAPID CREEK 6130 6.8 7.5 91 7.8 8.0 98
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Basin wide percent of average 88 97
UPPER N. PLATTE
ARAPAHOE 4020 -M -M * -M -M *
BLACKHALL MTN 9820 21.4 -M * 22.7 -M *
COLUMBINE 9160 18.1 23.9 76 19.1 23.1 83
DIVIDE PEAK 8880 13.4 17.8 75 17.9 18.9 95
JOE WRIGHT 10120 13.2 19.2 69 18.3 22.4 82
LAPRELE CREEK 8375 8.8 10.1 87 11.5 11.2 103
NORTH FRENCH CREEK 10130 18.8 25.8 73 18.7 22.4 83
NEVER SUMMER 10280 11.7 18.2 64 10.8 21.3 51
OLD BATTLE 10000 21.8 29.4 74 25.7 31.7 81
RAWAH 9020 7.4 13.6 54 10.5 14.8 71
SAGE CREEK BASIN 7850 12.0 10.3 117 9.8 11.0 89
SAND LAKE 10050 22.7 28.9 79 22.5 21.5 105
SOUTH BRUSH CREEK 8440 7.0 11.7 60 11.0 14.7 75
TOWER 10500 28.5 41.5 69 29.8 35.2 85
WEBBER SPRINGS 9250 16.4 24.4 67 20.2 24.4 83
WILLOW CREEK PASS 9540 -M 10.7 * 9.1 11.5 79
ZIRKEL 9340 23.3 24.6 95 -M 23.8 *
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Basin wide percent of average 75 83
SWEETWATER
DEER PARK 9700 10.9 15.3 71 16.4 20.0 82
LARSEN CREEK 9000 11.2 -M * 12.7 -M *
SOUTH PASS 9040 13.0 15.4 84 13.1 16.6 79
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Basin wide percent of average 78 81
LOWER N. PLATTE
CASPER MTN. 7900 17.1 12.6 136 17.0 12.5 136
LAPRELE CREEK 8375 8.8 10.1 87 11.5 11.2 103
RENO HILL 8400 14.9 12.1 123 16.7 13.0 128
WINDY PEAK 7900 6.9 7.2 96 8.6 9.4 91
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Basin wide percent of average 114 117
LARAMIE RIVER
BROOKLYN LAKE 10240 17.2 21.2 81 18.5 19.6 94
CINNABAR PARK 9574 14.8 17.1 87 19.2 18.6 103
CROW CREEK 8330 7.4 8.1 91 10.0 8.8 114
DEADMAN HILL 10220 16.2 14.5 112 15.0 15.0 100
RAWAH 9020 7.4 13.6 54 10.5 14.8 71
ROACH 9700 12.5 15.4 81 15.7 16.8 93
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Basin wide percent of average 84 95
S. PLATTE
BLACK MOUNTAIN 8920 10.0 -M * 12.3 -M *
CROW CREEK 8330 7.4 8.1 91 10.0 8.8 114
DEADMAN HILL 10220 16.2 14.5 112 15.0 15.0 100
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Basin wide percent of average 104 105
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.7 11.3 95 11.0 14.1 78
DIVIDE PEAK 8880 13.4 17.8 75 17.9 18.9 95
ELK RIVER 8700 13.0 17.9 73 14.8 17.9 83
LITTLE SNAKE RIVER 8915 18.8 -M * 23.4 -M *
OLD BATTLE 10000 21.8 29.4 74 25.7 31.7 81
SAGE CREEK BASIN 7850 12.0 10.3 117 9.8 11.0 89
SANDSTONE RS 8150 9.9 14.3 69 11.9 17.3 69
WHISKEY PARK 8950 20.5 27.5 75 23.3 26.0 90
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Basin wide percent of average 79 84
UPPER GREEN RIVER
BIG SANDY OPENING 9080 12.4 13.4 93 12.4 12.4 100
BLIND BULL SUM 8650 21.3 25.9 82 16.5 20.7 80
EAST RIM DIVIDE 7930 10.6 12.2 87 11.0 11.2 98
ELKHART PARK G.S. 9400 12.3 12.4 99 13.2 12.1 109
GROS VENTRE SUMMIT 8750 9.3 13.0 72 9.8 11.9 82
GUNSIGHT PASS 9820 11.3 -M * 12.5 -M *
KENDALL R.S. 7740 13.9 14.0 99 14.6 13.7 107
LOOMIS PARK 8240 13.4 16.3 82 15.6 16.2 96
NEW FORK LAKE 8340 10.9 10.5 104 10.1 10.5 96
POCKET CREEK 9360 9.1 -M * 11.3 -M *
SNIDER BASIN 8060 12.4 13.7 91 12.6 14.9 85
SPRING CREEK DIVIDE 9000 21.5 24.6 87 21.5 24.5 88
TRIPLE PEAK 8500 21.2 23.2 91 24.1 22.9 105
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Basin wide percent of average 89 94
LOWER GREEN RIVER
BLACKS FORK JCT 8870 4.7 -M * 9.7 -M *
BUCK PASTURE 9700 .1 -M * 2.9 -M *
EF BLACKS FORK GS 9308 8.8 -M * 8.5 -M *
HAMS FORK 7840 9.4 12.3 76 8.9 11.3 79
HEWINTA 9519 9.0 10.5 86 11.2 13.0 86
HICKERSON PARK 9145 7.8 6.5 120 11.1 7.0 159
HOLE-IN-ROCK 9150 7.4 6.4 116 10.8 6.5 166
INDIAN CREEK 9425 18.9 25.3 75 16.8 23.3 72
KELLEY R.S. 8180 12.0 15.7 76 14.1 18.8 75
SPIRIT LK 10223 9.4 -M * 15.4 -M *
STEEL CREEK PARK 10200 8.3 14.3 58 12.8 14.4 89
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Basin wide percent of average 80 91
UPPER BEAR RIVER
BEAR RIVER RS 8500 5.6 -M * 9.1 -M *
BUG LAKE 7950 14.2 19.2 74 14.6 17.8 82
BURTS MILLER RANCH 8000 4.9 -M * 9.4 -M *
CHALK CREEK #1 8993 14.2 22.6 63 16.7 22.9 73
HAYDEN FORK 9212 9.5 15.0 63 15.8 19.0 83
KELLEY R.S. 8180 12.0 15.7 76 14.1 18.8 75
LILY LAKE 9156 8.9 12.0 74 10.8 15.8 68
MONTE CRISTO 8960 17.5 27.8 63 17.5 23.4 75
SALT RIVER SUMMIT 7760 10.4 13.4 78 11.2 17.3 65
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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.