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: APRIL 26 , 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 14.2 10.6 134 21.7 22.2 98
BLACK BEAR 8170 39.8 37.0 108 37.2 40.9 91
BLIND BULL SUM 8650 22.6 24.2 93 16.3 20.8 78
COTTONWOOD CREEK 7670 18.2 17.0 107 26.0 26.6 98
EAST RIM DIVIDE 7930 7.9 8.9 89 10.2 12.5 82
GRAND TARGHEE 9260 41.8 43.3 97 31.0 33.5 93
GRANITE CREEK 6770 11.0 9.3 118 16.7 20.7 81
GRASSY LAKE 7265 28.9 30.1 96 33.9 38.4 88
GROS VENTRE SUMMIT 8750 9.4 12.3 76 13.0 14.1 92
GUNSIGHT PASS 9820 11.9 13.4 89 13.5 15.5 87
LEWIS LAKE DIVIDE 7850 30.7 30.7 100 34.1 37.7 90
PHILLIPS BENCH 8200 25.4 25.5 100 26.7 29.9 89
SALT RIVER SUMMIT 7760 10.1 8.4 120 15.9 17.9 89
SNAKE RIVER STATION 6920 12.6 9.8 129 23.0 24.2 95
SPRING CREEK DIVIDE 9000 26.1 23.9 109 25.0 25.5 98
THUMB DIVIDE 7980 16.1 14.1 114 18.7 20.3 92
TOGWOTEE PASS 9580 23.5 24.5 96 24.4 26.5 92
TWO OCEAN PLATEAU 9240 31.4 29.2 108 27.3 29.3 93
WILLOW CREEK 8380 28.2 25.3 111 34.6 36.5 95
YOUNTS PEAK 8350 14.1 15.1 93 13.3 17.1 78
----- -----
Basin wide percent 103 91
MADISON-GALLATIN
BLACK BEAR 8170 39.8 37.0 108 37.2 40.9 91
CANYON 7870 12.2 11.6 105 13.8 17.5 79
MADISON PLATEAU 7750 22.7 22.4 101 25.7 28.2 91
WEST YELLOWSTONE 6700 2.5 4.7 53 14.2 15.5 92
WHISKEY CREEK 6800 10.9 15.4 71 19.2 21.8 88
----- -----
Basin wide percent 97 89
YELLOWSTONE
BEARTOOTH LAKE 9360 19.4 23.5 83 19.7 21.3 92
BURNT MTN 5880 .5 .0 * 11.5 14.9 77
CANYON 7870 12.2 11.6 105 13.8 17.5 79
COLE CREEK 7850 14.1 16.3 87 10.8 15.5 70
EVENING STAR 9200 26.6 24.6 108 30.2 29.6 102
FISHER CREEK 9100 32.1 33.2 97 33.0 34.3 96
NORTHEAST ENTRANCE 7350 5.1 4.9 104 12.1 13.4 90
PARKER PEAK 9400 25.4 21.8 117 22.8 19.4 118
SYLVAN LAKE 8420 19.2 20.3 95 25.3 24.3 104
THUMB DIVIDE 7980 16.1 14.1 114 18.7 20.3 92
TWO OCEAN PLATEAU 9240 31.4 29.2 108 27.3 29.3 93
WHITE MILL 8700 25.0 23.8 105 23.4 25.6 91
WOLVERINE 7650 6.5 5.2 125 11.7 13.3 88
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Basin wide percent 102 93
WIND RIVER
BURROUGHS CREEK 8750 13.2 13.1 101 12.3 17.3 71
CASTLE CREEK 8400 1.5 -M * 8.7 -M *
COLD SPRINGS 9630 4.5 2.7 167 9.7 11.7 83
DEER PARK 9700 14.1 16.3 87 15.9 22.8 70
HOBBS PARK 10100 13.6 15.7 87 13.1 15.9 82
KIRWIN 9550 11.0 10.2 108 12.7 13.1 97
LITTLE WARM 9370 10.5 9.4 112 13.0 14.6 89
OWL CREEK 8975 5.7 2.3 248 7.0 7.4 95
SOUTH PASS 9040 12.7 15.2 84 11.7 19.6 60
ST. LAWRENCE ALT 8620 3.5 4.6 76 9.6 10.9 88
TOGWOTEE PASS 9580 23.5 24.5 96 24.4 26.5 92
TOWNSEND CREEK 8700 8.3 8.7 95 11.4 14.3 80
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Basin wide percent 98 81
BIGHORN BASIN
BALD MTN. 9380 17.7 20.5 86 12.7 18.9 67
BEAR TRAP MEADOW 8200 9.1 1.7 535 11.1 10.0 111
BONE SPRINGS DIV 9350 16.5 16.4 101 13.8 17.4 79
GRAVE SPRINGS 8550 7.8 9.2 85 9.9 12.3 80
KIRWIN 9550 11.0 10.2 108 12.7 13.1 97
MARQUETTE 8760 9.4 -M * 10.8 -M *
MIDDLE POWDER 7760 13.7 12.2 112 15.6 13.5 116
OWL CREEK 8975 5.7 2.3 248 7.0 7.4 95
POWDER RIVER PASS 9480 13.1 10.1 130 15.7 14.3 110
SHELL CREEK 9580 17.0 15.9 107 15.4 15.5 99
TIMBER CREEK 7950 4.7 3.6 131 9.2 9.2 100
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Basin wide percent 114 94
SHOSHONE RIVER
BLACKWATER 9780 25.8 24.6 105 25.3 22.7 111
EVENING STAR 9200 26.6 24.6 108 30.2 29.6 102
MARQUETTE 8760 9.4 -M * 10.8 -M *
SYLVAN ROAD 7120 4.6 7.9 58 16.7 18.0 93
YOUNTS PEAK 8350 14.1 15.1 93 13.3 17.1 78
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Basin wide percent 98 98
POWDER RIVER
BEAR TRAP MEADOW 8200 9.1 1.7 535 11.1 10.0 111
CLOUD PEAK RESERVOIR 9860 15.3 16.4 93 13.7 15.8 87
GRAVE SPRINGS 8550 7.8 9.2 85 9.9 12.3 80
HANSEN SAWMILL 8360 6.7 4.1 163 9.7 10.3 94
MIDDLE POWDER 7760 13.7 12.2 112 15.6 13.5 116
POWDER RIVER PASS 9480 13.1 10.1 130 15.7 14.3 110
SOLDIER PARK 8720 6.0 -M * 9.5 -M *
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Basin wide percent 122 99
TONGUE RIVER
BIG GOOSE 7990 8.8 9.1 97 10.6 13.5 79
BONE SPRINGS DIV 9350 16.5 16.4 101 13.8 17.4 79
BURGESS JUNCTION 7880 12.0 12.4 97 11.5 14.1 82
DOME LAKE 8880 10.9 11.8 92 11.4 15.6 73
LITTLE GOOSE 8870 10.0 -M * 13.7 -M *
SUCKER CREEK 8880 14.0 12.6 111 14.7 16.6 89
TIE CREEK 6870 5.8 3.2 181 12.5 13.6 92
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Basin wide percent 104 82
BELLE FOURCHE
COLE CANYON 5910 5.3 .6 883 10.4 11.0 95
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Basin wide percent 883 95
CHEYENNE RIVER BASIN
BLIND PARK 6890 6.5 3.2 203 14.0 13.7 102
NORTH RAPID CREEK 6130 6.4 3.1 206 11.8 11.7 101
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Basin wide percent 205 102
UPPER N. PLATTE
ARAPAHO RIDGE 10960 23.2 21.9 106 23.0 25.6 90
BLACKHALL MTN 9820 29.9 -M * 30.5 -M *
COLUMBINE 9160 22.5 20.3 111 25.8 27.8 93
DIVIDE PEAK 8880 16.1 18.0 89 21.3 23.7 90
JOE WRIGHT 10120 -M 23.4 * -M 29.0 *
LAPRELE CREEK 8375 6.7 7.2 93 10.5 14.5 72
MED BOW 10500 4.6 -M * 32.8 -M *
NORTH FRENCH CREEK 10130 27.5 32.8 84 26.7 29.8 90
NEVER SUMMER 10280 21.1 21.3 99 16.0 -M *
OLD BATTLE 10000 30.5 34.3 89 32.4 38.2 85
RAWAH 9020 13.9 8.0 174 17.3 16.7 104
SAGE CREEK BASIN 7850 -M 2.2 * 11.5 15.7 73
SAND LAKE 10050 26.7 31.1 86 26.3 28.1 94
SOUTH BRUSH CREEK 8440 10.8 10.0 108 14.7 17.2 85
TOWER 10500 38.6 49.5 78 23.5 43.6 54
WEBBER SPRINGS 9250 22.5 21.9 103 25.4 29.2 87
WILLOW CREEK PASS 9540 18.2 13.8 132 17.8 15.2 117
ZIRKEL 9340 26.6 22.1 120 31.5 30.4 104
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Basin wide percent 98 87
SWEETWATER
DEER PARK 9700 14.1 16.3 87 15.9 22.8 70
LARSEN CREEK 9000 1.6 -M * 11.8 -M *
SOUTH PASS 9040 12.7 15.2 84 11.7 19.6 60
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Basin wide percent 85 65
LOWER N. PLATTE
CASPER MTN. 7900 13.5 14.2 95 11.4 17.3 66
LAPRELE CREEK 8375 6.7 7.2 93 10.5 14.5 72
RENO HILL 8400 13.3 13.7 97 15.4 18.1 85
WINDY PEAK 7900 5.7 5.8 98 9.5 12.5 76
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Basin wide percent 96 75
LARAMIE RIVER
BROOKLYN LAKE 10240 21.2 22.9 93 21.1 23.9 88
CINNABAR PARK 9574 14.3 20.0 72 22.2 26.3 84
CROW CREEK 8330 5.4 .0 * 10.6 12.9 82
DEADMAN HILL 10220 18.1 18.3 99 17.7 20.0 88
RAWAH 9020 13.9 8.0 174 17.3 16.7 104
ROACH 9700 17.0 16.9 101 19.1 21.6 88
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Basin wide percent 104 89
S. PLATTE
BLACK MOUNTAIN 8920 12.1 -M * 14.1 -M *
CROW CREEK 8330 5.4 .0 * 10.6 12.9 82
DEADMAN HILL 10220 18.1 18.3 99 17.7 20.0 88
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Basin wide percent 128* 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.8 1.6 300 13.3 16.7 80
DIVIDE PEAK 8880 16.1 18.0 89 21.3 23.7 90
ELK RIVER 8700 16.4 14.4 114 19.5 22.1 88
LITTLE SNAKE RIVER 8915 23.7 23.2 102 29.3 31.8 92
OLD BATTLE 10000 30.5 34.3 89 32.4 38.2 85
SAGE CREEK BASIN 7850 -M 2.2 * 11.5 15.7 73
SANDSTONE RS 8150 9.1 8.2 111 14.5 20.2 72
WHISKEY PARK 8950 27.4 25.6 107 29.6 30.7 96
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Basin wide percent 102 86
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.6 12.0 97 11.9 14.7 81
BLIND BULL SUM 8650 22.6 24.2 93 16.3 20.8 78
EAST RIM DIVIDE 7930 7.9 8.9 89 10.2 12.5 82
ELKHART PARK G.S. 9400 10.4 11.8 88 11.4 14.5 79
GROS VENTRE SUMMIT 8750 9.4 12.3 76 13.0 14.1 92
GUNSIGHT PASS 9820 11.9 13.4 89 13.5 15.5 87
KENDALL R.S. 7740 5.3 6.3 84 12.0 15.0 80
LOOMIS PARK 8240 10.9 11.6 94 15.3 18.4 83
NEW FORK LAKE 8340 6.4 7.2 89 7.8 11.6 67
POCKET CREEK 9360 -M -M * -M -M *
SNIDER BASIN 8060 8.7 10.0 87 15.0 15.2 99
SPRING CREEK DIVIDE 9000 26.1 23.9 109 25.0 25.5 98
TRIPLE PEAK 8500 22.4 18.9 119 25.7 27.1 95
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Basin wide percent 96 86
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.6 -M * 12.3 -M *
BUCK PASTURE 9700 15.9 -M * 18.1 -M *
EF BLACKS FORK GS 9308 15.5 -M * 12.7 -M *
HAMS FORK 7840 6.7 4.6 146 10.6 12.6 84
HEWINTA 9519 12.8 6.5 197 15.0 15.6 96
HICKERSON PARK 9145 8.1 5.1 159 11.9 11.6 103
HOLE-IN-ROCK 9150 10.7 4.6 233 13.0 11.1 117
INDIAN CREEK 9425 24.3 23.8 102 20.8 24.3 86
KELLEY R.S. 8180 13.2 11.8 112 15.6 19.6 80
SPIRIT LK 10223 13.2 -M * 17.3 -M *
STEEL CREEK PARK 10200 15.5 16.6 93 18.2 18.5 98
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Basin wide percent 125 93
UPPER BEAR RIVER
BEAR RIVER RS 8500 6.3 -M * 13.4 -M *
BUG LAKE 7950 13.8 16.2 85 17.9 21.1 85
BURTS MILLER RANCH 8000 3.3 -M * 8.7 -M *
CHALK CREEK #1 8993 22.2 24.7 90 24.3 27.7 88
HAYDEN FORK 9212 13.4 10.4 129 19.6 23.1 85
KELLEY R.S. 8180 13.2 11.8 112 15.6 19.6 80
LILY LAKE 9156 13.5 9.8 138 15.2 19.0 80
MONTE CRISTO 8960 23.7 27.3 87 24.8 28.4 87
SALT RIVER SUMMIT 7760 10.1 8.4 120 15.9 17.9 89
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Basin wide percent 101 85
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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.
