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 THURSDAY: APRIL 11 , 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 14.6 14.7 99 19.8 21.0 94
BLACK BEAR 8170 37.4 36.7 102 35.6 38.4 93
BLIND BULL SUM 8650 20.3 23.5 86 14.5 19.6 74
COTTONWOOD CREEK 7670 16.8 20.7 81 23.7 24.8 96
EAST RIM DIVIDE 7930 7.8 10.2 76 8.7 11.8 74
GRAND TARGHEE 9260 37.2 39.6 94 28.0 31.2 90
GRANITE CREEK 6770 11.3 13.6 83 15.2 19.7 77
GRASSY LAKE 7265 27.3 31.4 87 31.6 36.1 88
GROS VENTRE SUMMIT 8750 10.3 12.8 80 11.2 13.1 85
GUNSIGHT PASS 9820 10.9 13.8 79 11.7 14.1 83
LEWIS LAKE DIVIDE 7850 29.3 30.2 97 32.0 35.6 90
PHILLIPS BENCH 8200 22.4 25.8 87 23.9 28.3 84
SALT RIVER SUMMIT 7760 9.2 12.3 75 14.5 16.8 86
SNAKE RIVER STATION 6920 13.1 14.2 92 21.4 22.6 95
SPRING CREEK DIVIDE 9000 22.9 22.7 101 22.2 23.9 93
THUMB DIVIDE 7980 15.0 14.6 103 17.3 18.8 92
TOGWOTEE PASS 9580 20.3 22.6 90 21.3 24.5 87
TWO OCEAN PLATEAU 9240 28.4 26.6 107 24.5 27.4 89
WILLOW CREEK 8380 25.4 27.8 91 31.4 33.9 93
YOUNTS PEAK 8350 12.2 14.5 84 11.6 15.9 73
----- -----
Basin wide percent 92 88
MADISON-GALLATIN
BLACK BEAR 8170 37.4 36.7 102 35.6 38.4 93
CANYON 7870 11.4 12.3 93 12.8 16.3 79
MADISON PLATEAU 7750 22.0 22.0 100 25.0 26.4 95
WEST YELLOWSTONE 6700 6.9 8.8 78 14.0 14.2 99
WHISKEY CREEK 6800 11.2 14.7 76 18.7 20.3 92
----- -----
Basin wide percent 94 92
YELLOWSTONE
BEARTOOTH LAKE 9360 17.4 21.7 80 17.7 19.9 89
BURNT MTN 5880 .9 3.0 30 9.8 13.2 74
CANYON 7870 11.4 12.3 93 12.8 16.3 79
COLE CREEK 7850 10.8 15.2 71 8.4 13.3 63
EVENING STAR 9200 24.2 24.1 100 27.3 27.6 99
FISHER CREEK 9100 31.3 31.5 99 30.8 31.8 97
NORTHEAST ENTRANCE 7350 5.6 8.6 65 11.4 12.3 93
PARKER PEAK 9400 21.7 20.0 108 20.5 17.8 115
SYLVAN LAKE 8420 17.7 19.7 90 23.3 22.5 104
THUMB DIVIDE 7980 15.0 14.6 103 17.3 18.8 92
TWO OCEAN PLATEAU 9240 28.4 26.6 107 24.5 27.4 89
WHITE MILL 8700 22.7 22.9 99 21.9 23.9 92
WOLVERINE 7650 6.4 9.4 68 10.3 12.3 84
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Basin wide percent 93 92
WIND RIVER
BURROUGHS CREEK 8750 11.4 13.0 88 10.3 16.0 64
CASTLE CREEK 8400 3.4 -M * 7.6 -M *
COLD SPRINGS 9630 5.4 6.3 86 8.7 10.2 85
DEER PARK 9700 12.5 16.1 78 14.5 20.4 71
HOBBS PARK 10100 11.9 14.6 82 11.4 13.8 83
KIRWIN 9550 9.4 9.7 97 11.2 11.7 96
LITTLE WARM 9370 9.4 10.2 92 11.4 13.0 88
OWL CREEK 8975 5.4 5.7 95 6.1 6.2 98
SOUTH PASS 9040 11.2 15.6 72 10.5 17.7 59
ST. LAWRENCE ALT 8620 2.2 6.9 32 7.9 9.2 86
TOGWOTEE PASS 9580 20.3 22.6 90 21.3 24.5 87
TOWNSEND CREEK 8700 6.8 9.9 69 9.5 12.4 77
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Basin wide percent 81 79
BIGHORN BASIN
BALD MTN. 9380 14.7 19.3 76 10.3 17.3 60
BEAR TRAP MEADOW 8200 7.7 4.7 164 9.5 8.8 108
BONE SPRINGS DIV 9350 13.9 17.0 82 11.7 15.8 74
GRAVE SPRINGS 8550 7.4 9.5 78 8.4 11.0 76
KIRWIN 9550 9.4 9.7 97 11.2 11.7 96
MARQUETTE 8760 6.7 -M * 8.6 -M *
MIDDLE POWDER 7760 11.2 12.3 91 13.6 12.0 113
OWL CREEK 8975 5.4 5.7 95 6.1 6.2 98
POWDER RIVER PASS 9480 11.3 10.3 110 13.2 12.9 102
SHELL CREEK 9580 13.9 15.5 90 12.5 14.0 89
TIMBER CREEK 7950 3.5 5.1 69 7.2 7.6 95
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Basin wide percent 90 88
SHOSHONE RIVER
BLACKWATER 9780 22.1 23.1 96 22.1 20.8 106
EVENING STAR 9200 24.2 24.1 100 27.3 27.6 99
MARQUETTE 8760 6.7 -M * 8.6 -M *
SYLVAN ROAD 7120 5.6 10.4 54 16.1 16.8 96
YOUNTS PEAK 8350 12.2 14.5 84 11.6 15.9 73
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Basin wide percent 89 95
POWDER RIVER
BEAR TRAP MEADOW 8200 7.7 4.7 164 9.5 8.8 108
CLOUD PEAK RESERVOIR 9860 12.8 15.2 84 11.7 13.7 85
GRAVE SPRINGS 8550 7.4 9.5 78 8.4 11.0 76
HANSEN SAWMILL 8360 6.4 6.1 105 8.4 8.8 95
MIDDLE POWDER 7760 11.2 12.3 91 13.6 12.0 113
POWDER RIVER PASS 9480 11.3 10.3 110 13.2 12.9 102
SOLDIER PARK 8720 4.9 -M * 8.1 -M *
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Basin wide percent 98 96
TONGUE RIVER
BIG GOOSE 7990 7.2 9.9 73 8.9 11.9 75
BONE SPRINGS DIV 9350 13.9 17.0 82 11.7 15.8 74
BURGESS JUNCTION 7880 10.4 12.2 85 9.9 12.7 78
DOME LAKE 8880 9.1 11.9 76 9.6 14.0 69
LITTLE GOOSE 8870 8.3 -M * 11.8 -M *
SUCKER CREEK 8880 12.0 12.5 96 12.6 14.8 85
TIE CREEK 6870 4.0 5.3 75 10.2 12.1 84
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Basin wide percent 82 77
BELLE FOURCHE
COLE CANYON 5910 3.2 4.3 74 8.0 9.7 82
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Basin wide percent 74 82
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.7 6.4 73 11.9 12.2 98
NORTH RAPID CREEK 6130 5.5 6.2 89 9.6 10.2 94
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Basin wide percent 81 96
UPPER N. PLATTE
ARAPAHO RIDGE 10960 19.0 21.3 89 19.1 23.2 82
BLACKHALL MTN 9820 24.6 -M * 25.4 -M *
COLUMBINE 9160 19.8 23.0 86 22.1 25.9 85
DIVIDE PEAK 8880 13.2 20.3 65 17.9 21.8 82
JOE WRIGHT 10120 16.0 21.8 73 23.8 26.2 91
LAPRELE CREEK 8375 5.1 9.4 54 8.1 12.8 63
MED BOW 10500 15.2 -M * 28.5 -M *
NORTH FRENCH CREEK 10130 22.4 30.7 73 22.0 27.2 81
NEVER SUMMER 10280 15.5 20.5 76 11.9 -M *
OLD BATTLE 10000 25.2 31.9 79 27.0 35.5 76
RAWAH 9020 9.9 10.4 95 13.8 -M *
SAGE CREEK BASIN 7850 -M 10.8 * 10.1 14.9 68
SAND LAKE 10050 22.6 29.8 76 22.5 25.2 89
SOUTH BRUSH CREEK 8440 7.3 11.6 63 11.1 15.6 71
TOWER 10500 33.7 46.9 72 26.7 40.3 66
WEBBER SPRINGS 9250 18.7 23.3 80 21.0 27.1 77
WILLOW CREEK PASS 9540 12.9 12.5 103 13.4 13.7 98
ZIRKEL 9340 21.3 25.5 84 26.3 -M *
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Basin wide percent 77 79
SWEETWATER
DEER PARK 9700 12.5 16.1 78 14.5 20.4 71
LARSEN CREEK 9000 5.2 -M * 11.1 -M *
SOUTH PASS 9040 11.2 15.6 72 10.5 17.7 59
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Basin wide percent 75 66
LOWER N. PLATTE
CASPER MTN. 7900 10.4 14.5 72 8.9 15.4 58
LAPRELE CREEK 8375 5.1 9.4 54 8.1 12.8 63
RENO HILL 8400 10.4 14.2 73 12.2 15.9 77
WINDY PEAK 7900 4.2 7.6 55 7.3 10.8 68
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Basin wide percent 66 66
LARAMIE RIVER
BROOKLYN LAKE 10240 17.3 22.3 78 16.8 21.5 78
CINNABAR PARK 9574 14.4 21.4 67 17.6 24.6 72
CROW CREEK 8330 3.9 6.3 62 7.8 11.3 69
DEADMAN HILL 10220 14.4 16.5 87 14.0 17.7 79
RAWAH 9020 9.9 10.4 95 13.8 -M *
ROACH 9700 12.9 16.6 78 14.7 19.6 75
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Basin wide percent 78 75
S. PLATTE
BLACK MOUNTAIN 8920 9.0 -M * 10.8 -M *
CROW CREEK 8330 3.9 6.3 62 7.8 11.3 69
DEADMAN HILL 10220 14.4 16.5 87 14.0 17.7 79
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Basin wide percent 80 75
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.8 8.4 57 11.0 15.2 72
DIVIDE PEAK 8880 13.2 20.3 65 17.9 21.8 82
ELK RIVER 8700 -M 18.4 * -M 20.4 *
LITTLE SNAKE RIVER 8915 18.1 26.0 70 24.3 30.5 80
OLD BATTLE 10000 25.2 31.9 79 27.0 35.5 76
SAGE CREEK BASIN 7850 -M 10.8 * 10.1 14.9 68
SANDSTONE RS 8150 7.0 12.6 56 11.9 18.6 64
WHISKEY PARK 8950 22.0 27.6 80 24.4 28.3 86
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Basin wide percent 71 77
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.5 12.9 81 10.6 13.5 79
BLIND BULL SUM 8650 20.3 23.5 86 14.5 19.6 74
EAST RIM DIVIDE 7930 7.8 10.2 76 8.7 11.8 74
ELKHART PARK G.S. 9400 9.4 12.3 76 9.9 13.5 73
GROS VENTRE SUMMIT 8750 10.3 12.8 80 11.2 13.1 85
GUNSIGHT PASS 9820 10.9 13.8 79 11.7 14.1 83
KENDALL R.S. 7740 7.0 10.9 64 10.9 14.3 76
LOOMIS PARK 8240 10.1 13.7 74 13.3 17.4 76
NEW FORK LAKE 8340 6.6 10.1 65 6.7 10.9 61
POCKET CREEK 9360 7.9 -M * 10.2 -M *
SNIDER BASIN 8060 8.4 12.2 69 13.4 14.3 94
SPRING CREEK DIVIDE 9000 22.9 22.7 101 22.2 23.9 93
TRIPLE PEAK 8500 20.2 21.0 96 23.1 25.5 91
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Basin wide percent 82 81
LOWER GREEN RIVER
BLACKS FORK JCT 8870 7.7 -M * 10.8 -M *
BUCK PASTURE 9700 13.7 -M * 15.9 -M *
EF BLACKS FORK GS 9308 13.8 -M * 10.6 -M *
HAMS FORK 7840 6.7 9.7 69 9.4 11.5 82
HEWINTA 9519 11.6 10.6 109 13.3 14.4 92
HICKERSON PARK 9145 7.1 7.7 92 9.9 10.5 94
HOLE-IN-ROCK 9150 9.2 7.1 130 11.1 10.0 111
INDIAN CREEK 9425 20.5 24.8 83 18.5 22.7 81
KELLEY R.S. 8180 12.0 14.3 84 13.9 18.2 76
SPIRIT LK 10223 11.2 -M * 15.2 -M *
STEEL CREEK PARK 10200 14.1 16.0 88 15.9 16.9 94
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Basin wide percent 90 88
UPPER BEAR RIVER
BEAR RIVER RS 8500 7.5 -M * 12.2 -M *
BUG LAKE 7950 13.4 19.0 71 17.2 19.6 88
BURTS MILLER RANCH 8000 5.1 -M * 8.1 -M *
CHALK CREEK #1 8993 19.8 24.7 80 22.2 25.6 87
HAYDEN FORK 9212 11.5 14.9 77 17.5 21.4 82
KELLEY R.S. 8180 12.0 14.3 84 13.9 18.2 76
LILY LAKE 9156 12.6 12.7 99 13.7 17.5 78
MONTE CRISTO 8960 21.2 27.9 76 22.9 26.3 87
SALT RIVER SUMMIT 7760 9.2 12.3 75 14.5 16.8 86
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Basin wide percent 79 84
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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.
