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 SUNDAY: APRIL 21 , 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 15.5 11.7 132 21.2 21.8 97
BLACK BEAR 8170 38.9 36.9 105 37.0 40.0 92
BLIND BULL SUM 8650 22.0 24.1 91 15.8 20.3 78
COTTONWOOD CREEK 7670 18.5 18.3 101 25.6 26.0 98
EAST RIM DIVIDE 7930 7.9 9.4 84 9.5 12.3 77
GRAND TARGHEE 9260 41.2 42.2 98 30.6 32.8 93
GRANITE CREEK 6770 12.0 10.5 114 16.5 20.4 81
GRASSY LAKE 7265 29.2 31.1 94 33.8 37.6 90
GROS VENTRE SUMMIT 8750 10.2 13.2 77 12.6 13.8 91
GUNSIGHT PASS 9820 12.0 13.7 88 13.4 15.0 89
LEWIS LAKE DIVIDE 7850 31.1 30.5 102 33.9 37.0 92
PHILLIPS BENCH 8200 24.8 25.4 98 26.2 29.3 89
SALT RIVER SUMMIT 7760 10.1 9.4 107 15.7 17.4 90
SNAKE RIVER STATION 6920 13.7 11.1 123 22.8 23.6 97
SPRING CREEK DIVIDE 9000 25.1 23.5 107 24.1 24.9 97
THUMB DIVIDE 7980 16.2 14.4 112 18.4 19.8 93
TOGWOTEE PASS 9580 23.0 24.0 96 23.8 25.8 92
TWO OCEAN PLATEAU 9240 30.7 28.3 108 26.6 28.7 93
WILLOW CREEK 8380 27.9 26.7 104 34.1 35.4 96
YOUNTS PEAK 8350 13.2 15.2 87 12.5 16.7 75
----- -----
Basin wide percent 101 91
MADISON-GALLATIN
BLACK BEAR 8170 38.9 36.9 105 37.0 40.0 92
CANYON 7870 12.3 12.2 101 13.6 17.1 80
MADISON PLATEAU 7750 22.3 22.9 97 25.5 27.6 92
WEST YELLOWSTONE 6700 4.7 7.0 67 14.1 15.2 93
WHISKEY CREEK 6800 10.9 15.4 71 19.0 21.3 89
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Basin wide percent 94 90
YELLOWSTONE
BEARTOOTH LAKE 9360 19.0 23.5 81 19.2 20.8 92
BURNT MTN 5880 .4 .0 * 10.5 14.4 73
CANYON 7870 12.3 12.2 101 13.6 17.1 80
COLE CREEK 7850 13.0 16.4 79 9.8 14.7 67
EVENING STAR 9200 26.1 24.7 106 29.5 28.9 102
FISHER CREEK 9100 31.3 32.6 96 32.4 33.5 97
NORTHEAST ENTRANCE 7350 5.7 6.4 89 12.0 13.0 92
PARKER PEAK 9400 24.5 21.1 116 22.3 18.8 119
SYLVAN LAKE 8420 19.1 20.4 94 25.0 23.7 105
THUMB DIVIDE 7980 16.2 14.4 112 18.4 19.8 93
TWO OCEAN PLATEAU 9240 30.7 28.3 108 26.6 28.7 93
WHITE MILL 8700 24.3 23.7 103 23.0 25.0 92
WOLVERINE 7650 6.0 6.9 87 11.5 12.9 89
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Basin wide percent 99 94
WIND RIVER
BURROUGHS CREEK 8750 12.7 13.2 96 11.6 16.9 69
CASTLE CREEK 8400 2.3 -M * 8.2 -M *
COLD SPRINGS 9630 4.7 4.3 109 9.0 11.0 82
DEER PARK 9700 13.5 16.3 83 15.4 21.7 71
HOBBS PARK 10100 13.1 14.9 88 12.4 14.9 83
KIRWIN 9550 10.2 10.0 102 11.8 12.5 94
LITTLE WARM 9370 10.1 10.0 101 12.6 14.0 90
OWL CREEK 8975 5.8 3.7 157 6.6 6.9 96
SOUTH PASS 9040 12.2 15.4 79 11.4 18.7 61
ST. LAWRENCE ALT 8620 3.1 5.2 60 9.0 10.0 90
TOGWOTEE PASS 9580 23.0 24.0 96 23.8 25.8 92
TOWNSEND CREEK 8700 7.9 9.3 85 10.8 13.4 81
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Basin wide percent 92 81
BIGHORN BASIN
BALD MTN. 9380 16.6 19.9 83 11.4 18.3 62
BEAR TRAP MEADOW 8200 8.5 2.9 293 10.4 9.5 109
BONE SPRINGS DIV 9350 15.3 16.1 95 12.6 16.9 75
GRAVE SPRINGS 8550 7.6 9.5 80 9.5 11.8 81
KIRWIN 9550 10.2 10.0 102 11.8 12.5 94
MARQUETTE 8760 8.4 -M * 9.9 -M *
MIDDLE POWDER 7760 13.3 12.4 107 15.0 12.9 116
OWL CREEK 8975 5.8 3.7 157 6.6 6.9 96
POWDER RIVER PASS 9480 12.4 10.2 122 14.7 13.8 107
SHELL CREEK 9580 15.5 15.4 101 13.7 14.9 92
TIMBER CREEK 7950 4.3 4.6 93 8.3 8.5 98
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Basin wide percent 105 90
SHOSHONE RIVER
BLACKWATER 9780 25.0 23.8 105 24.4 21.9 111
EVENING STAR 9200 26.1 24.7 106 29.5 28.9 102
MARQUETTE 8760 8.4 -M * 9.9 -M *
SYLVAN ROAD 7120 5.9 9.5 62 16.6 17.7 94
YOUNTS PEAK 8350 13.2 15.2 87 12.5 16.7 75
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Basin wide percent 96 97
POWDER RIVER
BEAR TRAP MEADOW 8200 8.5 2.9 293 10.4 9.5 109
CLOUD PEAK RESERVOIR 9860 14.2 15.9 89 12.7 15.0 85
GRAVE SPRINGS 8550 7.6 9.5 80 9.5 11.8 81
HANSEN SAWMILL 8360 6.5 4.6 141 9.0 9.7 93
MIDDLE POWDER 7760 13.3 12.4 107 15.0 12.9 116
POWDER RIVER PASS 9480 12.4 10.2 122 14.7 13.8 107
SOLDIER PARK 8720 5.3 -M * 8.7 -M *
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Basin wide percent 113 98
TONGUE RIVER
BIG GOOSE 7990 7.8 9.2 85 9.5 12.8 74
BONE SPRINGS DIV 9350 15.3 16.1 95 12.6 16.9 75
BURGESS JUNCTION 7880 11.2 12.6 89 10.6 13.6 78
DOME LAKE 8880 9.8 11.8 83 10.4 15.0 69
LITTLE GOOSE 8870 8.9 -M * 12.6 -M *
SUCKER CREEK 8880 12.9 12.7 102 13.7 15.9 86
TIE CREEK 6870 4.5 4.2 107 11.0 13.0 85
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Basin wide percent 92 78
BELLE FOURCHE
COLE CANYON 5910 4.3 1.8 239 9.2 10.5 88
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Basin wide percent 239 88
CHEYENNE RIVER BASIN
BLIND PARK 6890 5.9 4.0 148 13.3 13.2 101
NORTH RAPID CREEK 6130 5.6 4.0 140 11.0 11.2 98
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Basin wide percent 144 100
UPPER N. PLATTE
ARAPAHO RIDGE 10960 22.2 21.3 104 22.3 24.4 91
BLACKHALL MTN 9820 29.0 -M * 29.6 -M *
COLUMBINE 9160 22.4 20.6 109 25.2 27.0 93
DIVIDE PEAK 8880 16.1 18.6 87 21.1 22.9 92
JOE WRIGHT 10120 21.4 22.4 96 28.9 27.9 104
LAPRELE CREEK 8375 7.0 7.8 90 10.4 13.8 75
MED BOW 10500 8.5 -M * 32.2 -M *
NORTH FRENCH CREEK 10130 26.9 32.0 84 25.5 28.7 89
NEVER SUMMER 10280 20.6 20.7 100 15.6 -M *
OLD BATTLE 10000 29.7 32.9 90 31.5 37.2 85
RAWAH 9020 13.6 8.3 164 16.7 15.6 107
SAGE CREEK BASIN 7850 -M 5.4 * 11.5 15.3 75
SAND LAKE 10050 25.9 30.6 85 25.6 27.0 95
SOUTH BRUSH CREEK 8440 11.0 9.7 113 14.4 16.5 87
TOWER 10500 37.0 48.2 77 26.2 42.3 62
WEBBER SPRINGS 9250 22.0 21.8 101 25.0 28.5 88
WILLOW CREEK PASS 9540 17.6 13.3 132 17.4 14.5 120
ZIRKEL 9340 25.6 22.6 113 30.3 29.8 102
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Basin wide percent 96 89
SWEETWATER
DEER PARK 9700 13.5 16.3 83 15.4 21.7 71
LARSEN CREEK 9000 4.4 -M * 11.6 -M *
SOUTH PASS 9040 12.2 15.4 79 11.4 18.7 61
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Basin wide percent 81 66
LOWER N. PLATTE
CASPER MTN. 7900 13.0 14.4 90 10.9 16.7 65
LAPRELE CREEK 8375 7.0 7.8 90 10.4 13.8 75
RENO HILL 8400 13.3 14.0 95 15.2 17.3 88
WINDY PEAK 7900 6.2 6.5 95 9.5 11.7 81
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Basin wide percent 93 77
LARAMIE RIVER
BROOKLYN LAKE 10240 20.7 22.3 93 20.4 22.9 89
CINNABAR PARK 9574 14.2 20.0 71 21.1 25.4 83
CROW CREEK 8330 5.6 .3 1867* 10.3 12.0 86
DEADMAN HILL 10220 17.3 17.2 101 16.8 19.0 88
RAWAH 9020 13.6 8.3 164 16.7 15.6 107
ROACH 9700 16.4 16.6 99 18.5 20.7 89
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Basin wide percent 104 90
S. PLATTE
BLACK MOUNTAIN 8920 11.6 -M * 13.5 -M *
CROW CREEK 8330 5.6 .3 1867* 10.3 12.0 86
DEADMAN HILL 10220 17.3 17.2 101 16.8 19.0 88
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Basin wide percent 131* 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.1 3.9 131 13.3 16.1 83
DIVIDE PEAK 8880 16.1 18.6 87 21.1 22.9 92
ELK RIVER 8700 -M 15.2 * -M 21.4 *
LITTLE SNAKE RIVER 8915 23.1 24.1 96 28.8 31.2 92
OLD BATTLE 10000 29.7 32.9 90 31.5 37.2 85
SAGE CREEK BASIN 7850 -M 5.4 * 11.5 15.3 75
SANDSTONE RS 8150 10.0 10.0 100 14.4 19.6 73
WHISKEY PARK 8950 26.8 25.8 104 28.8 29.7 97
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Basin wide percent 96 87
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.2 12.6 89 11.7 14.2 82
BLIND BULL SUM 8650 22.0 24.1 91 15.8 20.3 78
EAST RIM DIVIDE 7930 7.9 9.4 84 9.5 12.3 77
ELKHART PARK G.S. 9400 9.5 11.9 80 10.7 14.1 76
GROS VENTRE SUMMIT 8750 10.2 13.2 77 12.6 13.8 91
GUNSIGHT PASS 9820 12.0 13.7 88 13.4 15.0 89
KENDALL R.S. 7740 6.5 8.1 80 11.7 14.8 79
LOOMIS PARK 8240 11.1 12.8 87 14.8 18.0 82
NEW FORK LAKE 8340 6.8 8.6 79 7.4 11.3 65
POCKET CREEK 9360 9.2 -M * 11.0 -M *
SNIDER BASIN 8060 8.5 10.6 80 14.3 14.8 97
SPRING CREEK DIVIDE 9000 25.1 23.5 107 24.1 24.9 97
TRIPLE PEAK 8500 22.1 19.2 115 25.2 26.5 95
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Basin wide percent 91 86
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.7 -M * 12.1 -M *
BUCK PASTURE 9700 15.7 -M * 17.9 -M *
EF BLACKS FORK GS 9308 16.4 -M * 12.4 -M *
HAMS FORK 7840 7.5 6.4 117 10.4 12.1 86
HEWINTA 9519 15.2 7.9 192 14.8 15.0 99
HICKERSON PARK 9145 8.0 5.3 151 11.6 11.1 105
HOLE-IN-ROCK 9150 10.2 5.7 179 12.7 10.6 120
INDIAN CREEK 9425 23.5 23.4 100 20.2 23.7 85
KELLEY R.S. 8180 13.2 12.4 106 15.3 19.0 81
SPIRIT LK 10223 12.9 -M * 17.0 -M *
STEEL CREEK PARK 10200 16.2 16.2 100 17.9 17.8 101
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Basin wide percent 121 94
UPPER BEAR RIVER
BEAR RIVER RS 8500 8.4 -M * 13.3 -M *
BUG LAKE 7950 14.3 16.9 85 18.0 20.5 88
BURTS MILLER RANCH 8000 6.1 -M * 8.7 -M *
CHALK CREEK #1 8993 22.4 24.5 91 24.1 26.9 90
HAYDEN FORK 9212 14.1 11.4 124 19.4 22.5 86
KELLEY R.S. 8180 13.2 12.4 106 15.3 19.0 81
LILY LAKE 9156 12.8 10.4 123 15.0 18.4 82
MONTE CRISTO 8960 23.6 27.4 86 24.8 27.5 90
SALT RIVER SUMMIT 7760 10.1 9.4 107 15.7 17.4 90
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Basin wide percent 98 87
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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.