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 SATURDAY: MAY 4 , 2013
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 9.5 7.8 122 22.1 23.1 96
BLACK BEAR 8170 39.3 37.3 105 37.4 42.2 89
BLIND BULL SUM 8650 21.5 22.8 94 16.3 21.6 75
COTTONWOOD CREEK 7670 15.4 14.4 107 26.1 27.8 94
EAST RIM DIVIDE 7930 2.1 7.7 27 10.4 13.1 79
GRAND TARGHEE 9260 41.5 45.7 91 31.2 35.2 89
GRANITE CREEK 6770 6.5 7.6 86 16.8 21.6 78
GRASSY LAKE 7265 22.5 27.9 81 34.0 39.7 86
GROS VENTRE SUMMIT 8750 9.4 11.1 85 13.2 14.9 89
GUNSIGHT PASS 9820 12.1 12.0 101 13.7 16.3 84
LEWIS LAKE DIVIDE 7850 26.2 29.6 89 34.1 39.0 87
PHILLIPS BENCH 8200 24.0 24.5 98 27.2 31.0 88
SALT RIVER SUMMIT 7760 6.4 7.4 86 15.9 18.6 85
SNAKE RIVER STATION 6920 5.4 5.6 96 23.0 25.0 92
SPRING CREEK DIVIDE 9000 25.1 24.3 103 25.1 26.5 95
THUMB DIVIDE 7980 11.2 10.8 104 18.9 21.3 89
TOGWOTEE PASS 9580 23.3 24.7 94 25.1 27.7 91
TWO OCEAN PLATEAU 9240 32.0 29.9 107 27.9 30.5 91
WILLOW CREEK 8380 24.3 22.0 110 34.7 38.1 91
YOUNTS PEAK 8350 14.2 15.8 90 13.7 18.0 76
----- -----
Basin wide percent 96 88
MADISON-GALLATIN
BLACK BEAR 8170 39.3 37.3 105 37.4 42.2 89
CANYON 7870 10.6 9.1 116 14.2 18.2 78
MADISON PLATEAU 7750 19.2 20.9 92 25.9 29.2 89
WEST YELLOWSTONE 6700 .1 .2 50* 14.2 16.2 88
WHISKEY CREEK 6800 9.0 13.3 68 19.1 22.6 85
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Basin wide percent 97 86
YELLOWSTONE
BEARTOOTH LAKE 9360 20.1 22.7 89 20.6 22.2 93
BURNT MTN 5880 .0 .0 * 12.4 16.2 77
CANYON 7870 10.6 9.1 116 14.2 18.2 78
COLE CREEK 7850 15.0 16.7 90 11.7 16.7 70
EVENING STAR 9200 25.9 24.9 104 31.1 30.8 101
FISHER CREEK 9100 32.7 32.7 100 33.6 35.5 95
NORTHEAST ENTRANCE 7350 2.1 1.6 131 12.5 14.0 89
PARKER PEAK 9400 25.1 21.2 118 23.5 20.3 116
SYLVAN LAKE 8420 17.3 19.0 91 25.6 25.4 101
THUMB DIVIDE 7980 11.2 10.8 104 18.9 21.3 89
TWO OCEAN PLATEAU 9240 32.0 29.9 107 27.9 30.5 91
WHITE MILL 8700 24.7 24.0 103 24.2 26.6 91
WOLVERINE 7650 4.4 1.1 400 12.4 14.0 89
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Basin wide percent 103 92
WIND RIVER
BURROUGHS CREEK 8750 12.6 12.6 100 12.8 18.2 70
CASTLE CREEK 8400 .3 -M * 9.6 -M *
COLD SPRINGS 9630 1.3 1.4 93 9.9 12.7 78
DEER PARK 9700 12.8 15.4 83 16.3 23.8 68
HOBBS PARK 10100 13.0 16.0 81 13.6 17.0 80
KIRWIN 9550 11.6 10.6 109 13.7 14.1 97
LITTLE WARM 9370 8.3 8.1 102 13.0 15.6 83
OWL CREEK 8975 4.5 .6 750 8.0 8.1 99
SOUTH PASS 9040 11.3 14.1 80 12.0 20.7 58
ST. LAWRENCE ALT 8620 .6 2.0 30 9.9 11.8 84
TOGWOTEE PASS 9580 23.3 24.7 94 25.1 27.7 91
TOWNSEND CREEK 8700 7.4 6.6 112 11.9 15.2 78
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Basin wide percent 95 79
BIGHORN BASIN
BALD MTN. 9380 17.6 20.4 86 13.1 20.0 66
BEAR TRAP MEADOW 8200 7.6 .4 1900* 11.7 10.9 107
BONE SPRINGS DIV 9350 17.3 16.4 105 14.2 18.6 76
GRAVE SPRINGS 8550 8.1 9.3 87 10.2 13.1 78
KIRWIN 9550 11.6 10.6 109 13.7 14.1 97
MARQUETTE 8760 9.9 -M * 11.8 -M *
MIDDLE POWDER 7760 13.2 11.4 116 15.9 14.4 110
OWL CREEK 8975 4.5 .6 750 8.0 8.1 99
POWDER RIVER PASS 9480 14.0 9.1 154 17.7 15.4 115
SHELL CREEK 9580 17.9 16.0 112 16.5 16.6 99
TIMBER CREEK 7950 3.3 2.5 132 10.4 10.2 102
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Basin wide percent 119 93
SHOSHONE RIVER
BLACKWATER 9780 26.4 25.8 102 26.2 23.8 110
EVENING STAR 9200 25.9 24.9 104 31.1 30.8 101
MARQUETTE 8760 9.9 -M * 11.8 -M *
SYLVAN ROAD 7120 .2 4.1 5 16.7 18.8 89
YOUNTS PEAK 8350 14.2 15.8 90 13.7 18.0 76
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Basin wide percent 94 96
POWDER RIVER
BEAR TRAP MEADOW 8200 7.6 .4 1900* 11.7 10.9 107
CLOUD PEAK RESERVOIR 9860 16.3 16.3 100 15.4 17.0 91
GRAVE SPRINGS 8550 8.1 9.3 87 10.2 13.1 78
HANSEN SAWMILL 8360 7.1 1.7 418 11.1 11.1 100
MIDDLE POWDER 7760 13.2 11.4 116 15.9 14.4 110
POWDER RIVER PASS 9480 14.0 9.1 154 17.7 15.4 115
SOLDIER PARK 8720 6.1 -M * 10.7 -M *
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Basin wide percent 138 100
TONGUE RIVER
BIG GOOSE 7990 9.2 9.4 98 11.7 14.4 81
BONE SPRINGS DIV 9350 17.3 16.4 105 14.2 18.6 76
BURGESS JUNCTION 7880 12.3 11.8 104 11.9 15.1 79
DOME LAKE 8880 11.6 11.3 103 12.8 16.7 77
LITTLE GOOSE 8870 10.7 -M * 15.2 -M *
SUCKER CREEK 8880 13.9 11.9 117 15.7 17.7 89
TIE CREEK 6870 4.0 2.5 160 13.1 14.7 89
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Basin wide percent 108 82
BELLE FOURCHE
COLE CANYON 5910 3.3 .0 * 10.5 12.4 85
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Basin wide percent * 85
CHEYENNE RIVER BASIN
BLIND PARK 6890 3.0 .2 1500* 14.1 14.6 97
NORTH RAPID CREEK 6130 3.4 .0 * 11.8 12.6 94
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Basin wide percent 3200* 95
UPPER N. PLATTE
ARAPAHO RIDGE 10960 21.7 22.3 97 24.5 26.5 92
BLACKHALL MTN 9820 29.6 -M * 31.2 -M *
COLUMBINE 9160 17.2 17.1 101 27.3 28.9 94
DIVIDE PEAK 8880 13.6 17.5 78 21.8 24.8 88
JOE WRIGHT 10120 23.0 22.9 100 31.8 30.4 105
LAPRELE CREEK 8375 4.3 5.4 80 11.0 15.3 72
MED BOW 10500 2.0 -M * 33.3 -M *
NORTH FRENCH CREEK 10130 25.7 32.7 79 27.1 31.2 87
NEVER SUMMER 10280 22.0 21.8 101 17.4 -M *
OLD BATTLE 10000 30.8 34.8 89 32.9 39.7 83
RAWAH 9020 11.4 4.8 238 18.7 17.6 106
SAGE CREEK BASIN 7850 -M .8 * 11.5 16.4 70
SAND LAKE 10050 26.1 31.6 83 26.8 29.5 91
SOUTH BRUSH CREEK 8440 7.0 7.9 89 15.1 18.2 83
TOWER 10500 39.0 50.7 77 -M 45.3 *
WEBBER SPRINGS 9250 20.8 21.1 99 26.2 30.3 86
WILLOW CREEK PASS 9540 19.3 14.5 133 19.6 16.0 122
ZIRKEL 9340 24.2 20.7 117 32.6 31.3 104
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Basin wide percent 94 92
SWEETWATER
DEER PARK 9700 12.8 15.4 83 16.3 23.8 68
LARSEN CREEK 9000 .0 -M * 11.6 -M *
SOUTH PASS 9040 11.3 14.1 80 12.0 20.7 58
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Basin wide percent 82 64
LOWER N. PLATTE
CASPER MTN. 7900 12.2 12.5 98 11.5 18.4 62
LAPRELE CREEK 8375 4.3 5.4 80 11.0 15.3 72
RENO HILL 8400 11.9 12.1 98 15.7 19.3 81
WINDY PEAK 7900 4.1 3.1 132 10.5 13.2 80
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Basin wide percent 98 74
LARAMIE RIVER
BROOKLYN LAKE 10240 19.9 23.0 87 21.9 25.1 87
CINNABAR PARK 9574 14.8 18.8 79 22.8 27.3 84
CROW CREEK 8330 2.7 .0 * 12.5 13.7 91
DEADMAN HILL 10220 18.6 19.1 97 19.4 21.0 92
RAWAH 9020 11.4 4.8 238 18.7 17.6 106
ROACH 9700 17.1 17.1 100 20.9 22.6 92
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Basin wide percent 102 91
S. PLATTE
BLACK MOUNTAIN 8920 10.9 -M * 16.0 -M *
CROW CREEK 8330 2.7 .0 * 12.5 13.7 91
DEADMAN HILL 10220 18.6 19.1 97 19.4 21.0 92
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Basin wide percent 112* 92
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 .0 * 13.3 17.4 76
DIVIDE PEAK 8880 13.6 17.5 78 21.8 24.8 88
ELK RIVER 8700 11.9 12.0 99 19.8 23.1 86
LITTLE SNAKE RIVER 8915 20.5 21.7 94 29.7 33.2 89
OLD BATTLE 10000 30.8 34.8 89 32.9 39.7 83
SAGE CREEK BASIN 7850 -M .8 * 11.5 16.4 70
SANDSTONE RS 8150 4.4 4.6 96 14.6 21.0 70
WHISKEY PARK 8950 24.4 26.9 91 30.2 32.0 94
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Basin wide percent 90 84
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.0 9.4 106 12.1 15.5 78
BLIND BULL SUM 8650 21.5 22.8 94 16.3 21.6 75
EAST RIM DIVIDE 7930 2.1 7.7 27 10.4 13.1 79
ELKHART PARK G.S. 9400 9.9 10.6 93 11.7 15.2 77
GROS VENTRE SUMMIT 8750 9.4 11.1 85 13.2 14.9 89
GUNSIGHT PASS 9820 12.1 12.0 101 13.7 16.3 84
KENDALL R.S. 7740 .8 2.6 31 12.0 15.7 76
LOOMIS PARK 8240 7.3 10.0 73 15.6 19.2 81
NEW FORK LAKE 8340 2.9 5.5 53 8.1 12.3 66
POCKET CREEK 9360 9.1 -M * 11.8 -M *
SNIDER BASIN 8060 2.6 8.5 31 15.1 15.8 96
SPRING CREEK DIVIDE 9000 25.1 24.3 103 25.1 26.5 95
TRIPLE PEAK 8500 18.3 16.3 112 26.0 28.2 92
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Basin wide percent 87 84
LOWER GREEN RIVER
BLACKS FORK JCT 8870 5.4 -M * 12.4 -M *
BUCK PASTURE 9700 12.7 -M * 18.2 -M *
EF BLACKS FORK GS 9308 10.8 -M * 12.9 -M *
HAMS FORK 7840 .2 1.5 13 11.2 13.3 84
HEWINTA 9519 7.9 4.2 188 15.1 16.5 92
HICKERSON PARK 9145 5.3 3.2 166 12.3 12.2 101
HOLE-IN-ROCK 9150 7.5 1.7 441 13.3 11.8 113
INDIAN CREEK 9425 21.6 22.1 98 20.9 25.3 83
KELLEY R.S. 8180 9.6 10.4 92 15.6 20.5 76
SPIRIT LK 10223 11.4 -M * 17.6 -M *
STEEL CREEK PARK 10200 15.8 17.4 91 18.4 19.5 94
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Basin wide percent 112 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 .3 -M * 13.3 -M *
BUG LAKE 7950 10.5 13.8 76 18.0 22.0 82
BURTS MILLER RANCH 8000 .1 -M * 8.7 -M *
CHALK CREEK #1 8993 19.4 23.4 83 24.3 28.9 84
HAYDEN FORK 9212 7.4 8.6 86 19.6 24.1 81
KELLEY R.S. 8180 9.6 10.4 92 15.6 20.5 76
LILY LAKE 9156 10.7 9.7 110 15.2 19.9 76
MONTE CRISTO 8960 19.8 25.3 78 24.8 29.7 84
SALT RIVER SUMMIT 7760 6.4 7.4 86 15.9 18.6 85
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Basin wide percent 85 81
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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 wide percent 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.
Reference period for comparison of conditions is 1981-2010.
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.
