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: APRIL 20 , 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 15.3 11.9 129 21.0 21.7 97
BLACK BEAR 8170 38.6 36.9 105 36.8 39.8 92
BLIND BULL SUM 8650 21.7 24.0 90 15.7 20.2 78
COTTONWOOD CREEK 7670 18.1 18.6 97 25.2 25.8 98
EAST RIM DIVIDE 7930 7.9 9.5 83 9.4 12.2 77
GRAND TARGHEE 9260 40.2 42.0 96 30.0 32.6 92
GRANITE CREEK 6770 11.9 10.8 110 16.3 20.3 80
GRASSY LAKE 7265 29.0 31.3 93 33.5 37.3 90
GROS VENTRE SUMMIT 8750 10.1 13.2 77 12.5 13.7 91
GUNSIGHT PASS 9820 11.7 13.6 86 12.9 14.9 87
LEWIS LAKE DIVIDE 7850 31.0 30.4 102 33.7 36.8 92
PHILLIPS BENCH 8200 24.0 25.6 94 25.7 29.2 88
SALT RIVER SUMMIT 7760 9.9 9.7 102 15.5 17.4 89
SNAKE RIVER STATION 6920 13.7 11.3 121 22.7 23.5 97
SPRING CREEK DIVIDE 9000 25.0 23.5 106 23.8 24.7 96
THUMB DIVIDE 7980 16.1 14.5 111 18.3 19.7 93
TOGWOTEE PASS 9580 22.6 23.8 95 23.4 25.7 91
TWO OCEAN PLATEAU 9240 30.4 28.1 108 26.2 28.5 92
WILLOW CREEK 8380 27.3 26.8 102 33.5 35.3 95
YOUNTS PEAK 8350 13.2 15.1 87 12.4 16.6 75
----- -----
Basin wide percent 99 90
MADISON-GALLATIN
BLACK BEAR 8170 38.6 36.9 105 36.8 39.8 92
CANYON 7870 12.2 12.2 100 13.6 17.0 80
MADISON PLATEAU 7750 22.1 22.9 97 25.5 27.5 93
WEST YELLOWSTONE 6700 4.8 7.4 65 14.2 15.1 94
WHISKEY CREEK 6800 10.4 15.3 68 18.9 21.2 89
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Basin wide percent 93 90
YELLOWSTONE
BEARTOOTH LAKE 9360 18.8 23.4 80 19.0 20.8 91
BURNT MTN 5880 .8 .0 * 10.5 14.2 74
CANYON 7870 12.2 12.2 100 13.6 17.0 80
COLE CREEK 7850 13.0 16.3 80 9.9 14.5 68
EVENING STAR 9200 25.9 24.8 104 29.2 28.7 102
FISHER CREEK 9100 30.8 32.4 95 32.1 33.3 96
NORTHEAST ENTRANCE 7350 5.6 6.7 84 11.9 13.0 92
PARKER PEAK 9400 24.2 20.9 116 22.1 18.7 118
SYLVAN LAKE 8420 19.0 20.4 93 24.9 23.6 106
THUMB DIVIDE 7980 16.1 14.5 111 18.3 19.7 93
TWO OCEAN PLATEAU 9240 30.4 28.1 108 26.2 28.5 92
WHITE MILL 8700 24.0 23.7 101 22.8 24.9 92
WOLVERINE 7650 5.7 7.2 79 11.1 12.8 87
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Basin wide percent 98 93
WIND RIVER
BURROUGHS CREEK 8750 12.6 13.1 96 11.6 16.8 69
CASTLE CREEK 8400 2.8 -M * 8.3 -M *
COLD SPRINGS 9630 4.8 4.6 104 9.1 10.9 83
DEER PARK 9700 13.5 16.3 83 15.4 21.5 72
HOBBS PARK 10100 13.1 14.8 89 12.5 14.8 84
KIRWIN 9550 10.1 10.0 101 11.8 12.4 95
LITTLE WARM 9370 10.0 10.1 99 12.5 13.9 90
OWL CREEK 8975 6.0 4.0 150 6.7 6.9 97
SOUTH PASS 9040 12.0 15.5 77 11.4 18.6 61
ST. LAWRENCE ALT 8620 3.2 5.3 60 9.0 9.9 91
TOGWOTEE PASS 9580 22.6 23.8 95 23.4 25.7 91
TOWNSEND CREEK 8700 8.0 9.4 85 10.8 13.3 81
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Basin wide percent 91 81
BIGHORN BASIN
BALD MTN. 9380 16.2 19.8 82 11.3 18.2 62
BEAR TRAP MEADOW 8200 8.5 3.2 266 10.4 9.4 111
BONE SPRINGS DIV 9350 15.0 16.1 93 12.4 16.7 74
GRAVE SPRINGS 8550 7.6 9.6 79 9.5 11.7 81
KIRWIN 9550 10.1 10.0 101 11.8 12.4 95
MARQUETTE 8760 8.5 -M * 9.9 -M *
MIDDLE POWDER 7760 13.3 12.5 106 15.0 12.8 117
OWL CREEK 8975 6.0 4.0 150 6.7 6.9 97
POWDER RIVER PASS 9480 12.1 10.2 119 14.4 13.7 105
SHELL CREEK 9580 15.1 15.4 98 13.4 14.8 91
TIMBER CREEK 7950 4.4 4.8 92 8.3 8.4 99
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Basin wide percent 103 91
SHOSHONE RIVER
BLACKWATER 9780 24.7 23.8 104 24.2 21.8 111
EVENING STAR 9200 25.9 24.8 104 29.2 28.7 102
MARQUETTE 8760 8.5 -M * 9.9 -M *
SYLVAN ROAD 7120 5.7 9.8 58 16.6 17.6 94
YOUNTS PEAK 8350 13.2 15.1 87 12.4 16.6 75
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Basin wide percent 95 97
POWDER RIVER
BEAR TRAP MEADOW 8200 8.5 3.2 266 10.4 9.4 111
CLOUD PEAK RESERVOIR 9860 14.0 15.8 89 12.7 14.9 85
GRAVE SPRINGS 8550 7.6 9.6 79 9.5 11.7 81
HANSEN SAWMILL 8360 6.7 4.8 140 9.0 9.5 95
MIDDLE POWDER 7760 13.3 12.5 106 15.0 12.8 117
POWDER RIVER PASS 9480 12.1 10.2 119 14.4 13.7 105
SOLDIER PARK 8720 5.3 -M * 8.6 -M *
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Basin wide percent 111 99
TONGUE RIVER
BIG GOOSE 7990 8.0 9.3 86 9.5 12.6 75
BONE SPRINGS DIV 9350 15.0 16.1 93 12.4 16.7 74
BURGESS JUNCTION 7880 11.1 12.5 89 10.6 13.4 79
DOME LAKE 8880 9.7 11.8 82 10.3 14.9 69
LITTLE GOOSE 8870 9.0 -M * 12.5 -M *
SUCKER CREEK 8880 12.8 12.7 101 13.6 15.8 86
TIE CREEK 6870 4.4 4.4 100 10.9 12.8 85
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Basin wide percent 91 78
BELLE FOURCHE
COLE CANYON 5910 4.2 2.0 210 9.2 10.4 88
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Basin wide percent 210 88
CHEYENNE RIVER BASIN
BLIND PARK 6890 6.1 4.1 149 13.2 13.1 101
NORTH RAPID CREEK 6130 5.9 4.2 140 10.9 11.0 99
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Basin wide percent 145 100
UPPER N. PLATTE
ARAPAHO RIDGE 10960 22.1 21.4 103 22.1 24.3 91
BLACKHALL MTN 9820 28.5 -M * 29.1 -M *
COLUMBINE 9160 22.2 20.6 108 24.8 26.9 92
DIVIDE PEAK 8880 15.5 18.9 82 20.6 22.8 90
JOE WRIGHT 10120 20.8 22.2 94 28.4 27.7 103
LAPRELE CREEK 8375 7.1 8.0 89 10.3 13.7 75
MED BOW 10500 9.9 -M * 31.0 -M *
NORTH FRENCH CREEK 10130 26.1 32.0 82 24.9 28.6 87
NEVER SUMMER 10280 20.2 20.7 98 15.3 -M *
OLD BATTLE 10000 29.1 32.7 89 30.6 37.0 83
RAWAH 9020 13.2 8.4 157 16.5 15.5 106
SAGE CREEK BASIN 7850 -M 6.0 * 11.2 15.3 73
SAND LAKE 10050 25.5 30.5 84 25.2 26.8 94
SOUTH BRUSH CREEK 8440 10.7 9.8 109 14.1 16.5 85
TOWER 10500 36.1 48.0 75 26.1 42.1 62
WEBBER SPRINGS 9250 21.8 22.0 99 24.4 28.4 86
WILLOW CREEK PASS 9540 17.3 13.1 132 17.2 14.4 119
ZIRKEL 9340 25.0 22.7 110 29.8 29.7 100
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Basin wide percent 94 88
SWEETWATER
DEER PARK 9700 13.5 16.3 83 15.4 21.5 72
LARSEN CREEK 9000 4.9 -M * 11.7 -M *
SOUTH PASS 9040 12.0 15.5 77 11.4 18.6 61
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Basin wide percent 80 67
LOWER N. PLATTE
CASPER MTN. 7900 12.9 14.4 90 10.7 16.6 64
LAPRELE CREEK 8375 7.1 8.0 89 10.3 13.7 75
RENO HILL 8400 13.2 13.9 95 15.1 17.2 88
WINDY PEAK 7900 6.4 6.6 97 9.4 11.6 81
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Basin wide percent 92 77
LARAMIE RIVER
BROOKLYN LAKE 10240 20.5 22.2 92 20.0 22.8 88
CINNABAR PARK 9574 14.1 20.1 70 20.5 25.3 81
CROW CREEK 8330 5.8 .7 829* 10.2 12.0 85
DEADMAN HILL 10220 17.1 17.0 101 16.6 18.9 88
RAWAH 9020 13.2 8.4 157 16.5 15.5 106
ROACH 9700 16.1 16.6 97 18.1 20.6 88
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Basin wide percent 102 89
S. PLATTE
BLACK MOUNTAIN 8920 11.5 -M * 13.3 -M *
CROW CREEK 8330 5.8 .7 829* 10.2 12.0 85
DEADMAN HILL 10220 17.1 17.0 101 16.6 18.9 88
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Basin wide percent 129* 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.9 4.3 114 12.9 16.1 80
DIVIDE PEAK 8880 15.5 18.9 82 20.6 22.8 90
ELK RIVER 8700 -M 15.5 * -M 21.3 *
LITTLE SNAKE RIVER 8915 22.0 24.3 91 27.8 31.2 89
OLD BATTLE 10000 29.1 32.7 89 30.6 37.0 83
SAGE CREEK BASIN 7850 -M 6.0 * 11.2 15.3 73
SANDSTONE RS 8150 9.4 10.1 93 13.8 19.5 71
WHISKEY PARK 8950 26.2 25.9 101 28.1 29.6 95
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Basin wide percent 92 85
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.3 12.7 89 11.6 14.1 82
BLIND BULL SUM 8650 21.7 24.0 90 15.7 20.2 78
EAST RIM DIVIDE 7930 7.9 9.5 83 9.4 12.2 77
ELKHART PARK G.S. 9400 9.6 11.9 81 10.6 14.0 76
GROS VENTRE SUMMIT 8750 10.1 13.2 77 12.5 13.7 91
GUNSIGHT PASS 9820 11.7 13.6 86 12.9 14.9 87
KENDALL R.S. 7740 6.8 8.4 81 11.7 14.8 79
LOOMIS PARK 8240 11.0 13.0 85 14.6 18.0 81
NEW FORK LAKE 8340 6.8 8.8 77 7.4 11.3 65
POCKET CREEK 9360 9.2 -M * 11.1 -M *
SNIDER BASIN 8060 8.8 10.7 82 14.3 14.8 97
SPRING CREEK DIVIDE 9000 25.0 23.5 106 23.8 24.7 96
TRIPLE PEAK 8500 21.8 19.3 113 24.9 26.3 95
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Basin wide percent 90 85
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.5 -M * 11.9 -M *
BUCK PASTURE 9700 15.3 -M * 17.6 -M *
EF BLACKS FORK GS 9308 15.9 -M * 12.1 -M *
HAMS FORK 7840 7.0 6.7 104 10.4 12.0 87
HEWINTA 9519 14.6 8.1 180 14.6 15.0 97
HICKERSON PARK 9145 7.8 5.4 144 11.4 11.0 104
HOLE-IN-ROCK 9150 10.2 5.9 173 12.6 10.5 120
INDIAN CREEK 9425 23.1 23.3 99 19.9 23.5 85
KELLEY R.S. 8180 12.7 12.7 100 14.8 18.9 78
SPIRIT LK 10223 12.8 -M * 16.9 -M *
STEEL CREEK PARK 10200 16.0 16.2 99 17.6 17.7 99
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Basin wide percent 117 93
UPPER BEAR RIVER
BEAR RIVER RS 8500 7.9 -M * 13.1 -M *
BUG LAKE 7950 14.2 17.2 83 17.9 20.4 88
BURTS MILLER RANCH 8000 5.7 -M * 8.6 -M *
CHALK CREEK #1 8993 21.8 24.6 89 23.7 26.7 89
HAYDEN FORK 9212 13.8 11.8 117 19.1 22.4 85
KELLEY R.S. 8180 12.7 12.7 100 14.8 18.9 78
LILY LAKE 9156 12.5 10.6 118 14.8 18.3 81
MONTE CRISTO 8960 23.2 27.5 84 24.1 27.3 88
SALT RIVER SUMMIT 7760 9.9 9.7 102 15.5 17.4 89
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Basin wide percent 95 86
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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.
