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: APRIL 25 , 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 8.6 14.3 60 25.7 23.8 108
BLACK BEAR 8170 41.2 40.6 101 46.9 44.9 104
BLIND BULL SUM 8650 23.5 28.5 82 18.1 24.7 73
COTTONWOOD CREEK 7670 12.9 21.6 60 26.2 31.1 84
EAST RIM DIVIDE 7930 .1 13.8 1 12.1 13.5 90
GRAND TARGHEE 9260 37.6 -M * 32.3 -M *
GRANITE CREEK 6770 6.3 14.6 43 17.8 21.9 81
GRASSY LAKE 7265 27.8 35.3 79 41.6 40.0 104
GROS VENTRE SUMMIT 8750 3.6 14.1 26 11.7 14.8 79
GUNSIGHT PASS 9820 10.1 -M * 15.8 -M *
LEWIS LAKE DIVIDE 7850 30.8 35.9 86 38.5 40.8 94
PHILLIPS BENCH 8200 20.8 30.4 68 27.3 32.4 84
SALT RIVER SUMMIT 7760 1.5 12.5 12 11.4 21.1 54
SNAKE RIVER STATION 6920 5.8 14.6 40 26.6 25.0 106
SPRING CREEK DIVIDE 9000 22.1 28.9 76 23.9 29.6 81
THUMB DIVIDE 7980 11.3 16.7 68 20.7 21.4 97
TOGWOTEE PASS 9580 21.1 27.6 76 25.9 28.1 92
TWO OCEAN PLATEAU 9240 36.1 31.6 114 30.7 31.2 98
WILLOW CREEK 8380 18.2 31.6 58 34.8 36.6 95
YOUNTS PEAK 8350 14.6 18.1 81 17.0 18.3 93
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Basin wide percent of average 71 92
MADISON-GALLATIN
BLACK BEAR 8170 41.2 40.6 101 46.9 44.9 104
CANYON 7870 11.1 12.3 90 17.1 17.3 99
MADISON PLATEAU 7750 27.0 25.3 107 35.0 29.8 117
WEST YELLOWSTONE 6700 .0 8.1 0 19.4 14.6 133
WHISKEY CREEK 6800 14.5 16.5 88 26.5 23.6 112
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Basin wide percent of average 91 111
YELLOWSTONE
BEARTOOTH LAKE 9360 25.3 25.7 98 27.2 22.8 119
BURNT MTN 5880 .0 2.4 0 14.0 19.1 73
CANYON 7870 11.1 12.3 90 17.1 17.3 99
COLE CREEK 7850 13.7 18.9 72 14.4 20.7 70
EVENING STAR 9200 30.3 32.7 93 35.8 29.0 123
FISHER CREEK 9100 38.9 37.7 103 39.6 40.9 97
NORTHEAST ENTRANCE 7350 .8 8.4 10 15.3 14.4 106
PARKER PEAK 9400 24.8 24.2 102 25.9 18.8 138
SYLVAN LAKE 8420 16.7 23.9 70 27.8 24.0 116
THUMB DIVIDE 7980 11.3 16.7 68 20.7 21.4 97
TWO OCEAN PLATEAU 9240 36.1 31.6 114 30.7 31.2 98
WHITE MILL 8700 25.8 26.3 98 27.7 30.4 91
WOLVERINE 7650 .0 8.5 0 14.2 14.7 97
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Basin wide percent of average 87 102
WIND RIVER
BURROUGHS CREEK 8750 12.1 14.4 84 15.0 18.7 80
CASTLE CREEK 8400 .0 -M * 9.0 -M *
COLD SPRINGS 9630 .0 5.1 0 9.9 13.2 75
DEER PARK 9700 8.8 19.5 45 19.4 25.9 75
HOBBS PARK 10100 10.6 17.6 60 14.5 16.0 91
KIRWIN 9550 9.0 12.7 71 15.2 13.6 112
LITTLE WARM 9370 2.9 11.8 25 12.7 16.1 79
OWL CREEK 8975 .0 4.1 0 6.1 7.7 79
SOUTH PASS 9040 9.6 18.1 53 14.7 21.8 67
ST. LAWRENCE ALT 8620 .0 6.4 0 8.3 11.3 73
TOGWOTEE PASS 9580 21.1 27.6 76 25.9 28.1 92
TOWNSEND CREEK 8700 .0 9.6 0 12.5 14.7 85
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Basin wide percent of average 50 82
BIGHORN BASIN
BALD MTN. 9380 21.7 22.9 95 17.3 20.5 84
BEAR TRAP MEADOW 8200 .0 3.0 0 10.8 10.3 105
BONE SPRINGS DIV 9350 19.5 17.9 109 18.0 17.5 103
GRAVE SPRINGS 8550 4.7 10.9 43 12.1 12.5 97
KIRWIN 9550 9.0 12.7 71 15.2 13.6 112
MARQUETTE 8760 1.7 -M * 13.1 12.8 102
MIDDLE POWDER 7760 7.0 14.2 49 12.7 15.0 85
OWL CREEK 8975 .0 4.1 0 6.1 7.7 79
POWDER RIVER PASS 9480 6.9 11.2 62 17.4 15.0 116
SHELL CREEK 9580 18.8 16.5 114 18.1 16.0 113
TIMBER CREEK 7950 .0 5.0 0 9.6 9.7 99
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Basin wide percent of average 74 100
SHOSHONE RIVER
BLACKWATER 9780 25.8 27.9 92 27.0 23.9 113
EVENING STAR 9200 30.3 32.7 93 35.8 29.0 123
MARQUETTE 8760 1.7 -M * 13.1 12.8 102
SYLVAN ROAD 7120 .0 9.6 0 20.1 19.9 101
YOUNTS PEAK 8350 14.6 18.1 81 17.0 18.3 93
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Basin wide percent of average 80 109
POWDER RIVER
BEAR TRAP MEADOW 8200 .0 3.0 0 10.8 10.3 105
CLOUD PEAK RESERVOIR 9860 12.9 15.9 81 17.6 16.2 109
GRAVE SPRINGS 8550 4.7 10.9 43 12.1 12.5 97
HANSEN SAWMILL 8360 .0 5.1 0 9.9 10.3 96
MIDDLE POWDER 7760 7.0 14.2 49 12.7 15.0 85
POWDER RIVER PASS 9480 6.9 11.2 62 17.4 15.0 116
SOLDIER PARK 8720 1.8 -M * 11.7 -M *
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Basin wide percent of average 52 102
TONGUE RIVER
BIG GOOSE 7990 5.5 12.3 45 16.5 12.1 136
BONE SPRINGS DIV 9350 19.5 17.9 109 18.0 17.5 103
BURGESS JUNCTION 7880 10.0 13.2 76 15.6 14.7 106
DOME LAKE 8880 11.5 13.5 85 17.4 16.0 109
LITTLE GOOSE 8870 4.4 -M * 19.1 -M *
SUCKER CREEK 8880 9.1 13.3 68 17.3 16.5 105
TIE CREEK 6870 .0 5.0 0 15.3 12.7 120
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Basin wide percent of average 74 112
BELLE FOURCHE
COLE CANYON 5910 .0 6.1 0 9.5 8.7 109
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Basin wide percent of average 0 109
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 5.5 0 11.3 13.5 84
NORTH RAPID CREEK 6130 .0 6.4 0 9.8 10.6 92
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Basin wide percent of average 0 88
UPPER N. PLATTE
ARAPAHO RIDGE 10960 12.7 25.8 49 18.3 30.2 61
BLACKHALL MTN 9820 19.0 -M * 25.4 -M *
COLUMBINE 9160 -M 22.9 * 21.3 28.4 75
DIVIDE PEAK 8880 -M 20.5 * 20.3 23.6 86
JOE WRIGHT 10120 10.5 24.7 43 21.0 29.0 72
LAPRELE CREEK 8375 .0 8.5 0 13.2 15.6 85
NORTH FRENCH CREEK 10130 15.8 34.1 46 21.7 28.6 76
NEVER SUMMER 10280 11.1 23.5 47 12.4 27.5 45
OLD BATTLE 10000 23.5 36.1 65 29.5 38.8 76
RAWAH 9020 .0 16.4 0 12.9 19.0 68
SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.7 82
SAND LAKE 10050 23.7 36.4 65 25.7 28.2 91
SOUTH BRUSH CREEK 8440 .0 12.3 0 12.7 19.3 66
TOWER 10500 27.3 51.5 53 34.0 43.9 77
WEBBER SPRINGS 9250 8.2 25.9 32 23.4 30.3 77
WILLOW CREEK PASS 9540 -M 14.2 * 10.5 15.1 70
ZIRKEL 9340 -M 23.6 * -M 29.3 *
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Basin wide percent of average 45 74
SWEETWATER
DEER PARK 9700 8.8 19.5 45 19.4 25.9 75
LARSEN CREEK 9000 .4 -M * 15.4 -M *
SOUTH PASS 9040 9.6 18.1 53 14.7 21.8 67
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Basin wide percent of average 49 71
LOWER N. PLATTE
CASPER MTN. 7900 11.2 17.6 64 19.5 18.5 105
LAPRELE CREEK 8375 .0 8.5 0 13.2 15.6 85
RENO HILL 8400 10.5 15.7 67 20.3 19.1 106
WINDY PEAK 7900 .0 6.3 0 9.7 12.8 76
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Basin wide percent of average 45 95
LARAMIE RIVER
BROOKLYN LAKE 10240 11.8 28.1 42 20.9 26.0 80
CINNABAR PARK 9574 7.6 16.9 45 21.1 22.7 93
CROW CREEK 8330 .1 8.0 1 11.1 11.8 94
DEADMAN HILL 10220 15.6 19.3 81 17.5 20.1 87
RAWAH 9020 .0 16.4 0 12.9 19.0 68
ROACH 9700 8.7 18.6 47 18.1 21.6 84
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Basin wide percent of average 41 84
S. PLATTE
BLACK MOUNTAIN 8920 1.6 -M * 13.5 -M *
CROW CREEK 8330 .1 8.0 1 11.1 11.8 94
DEADMAN HILL 10220 15.6 19.3 81 17.5 20.1 87
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Basin wide percent of average 58 90
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 6.2 0 12.9 18.0 72
DIVIDE PEAK 8880 -M 20.5 * 20.3 23.6 86
ELK RIVER 8700 -M 17.3 * 16.6 22.4 74
LITTLE SNAKE RIVER 8915 5.8 -M * 26.0 -M *
OLD BATTLE 10000 23.5 36.1 65 29.5 38.8 76
SAGE CREEK BASIN 7850 -M 11.9 * 11.2 13.7 82
SANDSTONE RS 8150 -M 11.4 * 13.4 21.2 63
WHISKEY PARK 8950 11.7 30.7 38 26.0 32.7 80
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Basin wide percent of average 48* 76
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.7 14.6 73 15.1 15.4 98
BLIND BULL SUM 8650 23.5 28.5 82 18.1 24.7 73
EAST RIM DIVIDE 7930 .1 13.8 1 12.1 13.5 90
ELKHART PARK G.S. 9400 11.6 13.6 85 16.3 15.4 106
GROS VENTRE SUMMIT 8750 3.6 14.1 26 11.7 14.8 79
GUNSIGHT PASS 9820 10.1 -M * 15.8 -M *
KENDALL R.S. 7740 4.0 11.8 34 15.1 16.1 94
LOOMIS PARK 8240 3.7 15.7 24 17.4 19.4 90
NEW FORK LAKE 8340 1.8 9.9 18 11.8 12.9 91
POCKET CREEK 9360 8.9 -M * 13.6 -M *
SNIDER BASIN 8060 4.2 13.9 30 13.6 18.1 75
SPRING CREEK DIVIDE 9000 22.1 28.9 76 23.9 29.6 81
TRIPLE PEAK 8500 11.5 25.1 46 26.6 27.9 95
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Basin wide percent of average 51 87
LOWER GREEN RIVER
BLACKS FORK JCT 8870 .0 -M * 12.1 -M *
BUCK PASTURE 9700 .1 -M * 5.1 -M *
EF BLACKS FORK GS 9308 -M -M * 10.7 -M *
HAMS FORK 7840 .1 7.7 1 10.7 14.2 75
HEWINTA 9519 .0 10.8 0 14.2 17.2 83
HICKERSON PARK 9145 .0 7.0 0 13.9 9.7 143
HOLE-IN-ROCK 9150 .2 5.9 3 14.0 9.3 151
INDIAN CREEK 9425 14.5 29.3 49 19.5 28.8 68
KELLEY R.S. 8180 7.3 15.6 47 16.6 23.0 72
SPIRIT LK 10223 5.3 -M * 19.8 -M *
STEEL CREEK PARK 10200 -M 18.2 * 16.3 19.6 83
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Basin wide percent of average 29 86
UPPER BEAR RIVER
BEAR RIVER RS 8500 .0 -M * 11.2 -M *
BUG LAKE 7950 9.2 20.0 46 17.0 21.8 78
BURTS MILLER RANCH 8000 .3 -M * 9.8 -M *
CHALK CREEK #1 8993 10.8 25.9 42 20.9 29.2 72
HAYDEN FORK 9212 .2 14.8 1 19.6 24.4 80
KELLEY R.S. 8180 7.3 15.6 47 16.6 23.0 72
LILY LAKE 9156 .1 12.8 1 13.6 20.5 66
MONTE CRISTO 8960 11.7 29.6 40 21.4 29.3 73
SALT RIVER SUMMIT 7760 1.5 12.5 12 11.4 21.1 54
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Basin wide percent of average 31 71
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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.