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 27 , 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 13.2 10.4 127 21.7 22.3 97
BLACK BEAR 8170 40.5 37.0 109 37.2 41.1 91
BLIND BULL SUM 8650 22.6 24.1 94 16.3 20.8 78
COTTONWOOD CREEK 7670 17.7 16.7 106 26.0 26.8 97
EAST RIM DIVIDE 7930 6.9 8.8 78 10.2 12.5 82
GRAND TARGHEE 9260 41.7 43.6 96 31.1 33.6 93
GRANITE CREEK 6770 10.3 9.0 114 16.7 20.8 80
GRASSY LAKE 7265 27.7 30.0 92 33.9 38.5 88
GROS VENTRE SUMMIT 8750 9.8 12.1 81 13.0 14.2 92
GUNSIGHT PASS 9820 12.2 13.3 92 13.6 15.5 88
LEWIS LAKE DIVIDE 7850 29.7 30.7 97 34.2 37.8 90
PHILLIPS BENCH 8200 25.2 25.6 98 26.7 30.0 89
SALT RIVER SUMMIT 7760 9.7 8.2 118 15.9 18.0 88
SNAKE RIVER STATION 6920 11.3 9.4 120 22.9 24.2 95
SPRING CREEK DIVIDE 9000 26.3 24.0 110 25.1 25.6 98
THUMB DIVIDE 7980 15.3 13.9 110 18.7 20.4 92
TOGWOTEE PASS 9580 23.2 24.6 94 24.4 26.6 92
TWO OCEAN PLATEAU 9240 31.2 29.3 106 27.3 29.5 93
WILLOW CREEK 8380 27.6 24.9 111 34.7 36.7 95
YOUNTS PEAK 8350 14.2 15.1 94 13.1 17.2 76
----- -----
Basin wide percent 101 90
MADISON-GALLATIN
BLACK BEAR 8170 40.5 37.0 109 37.2 41.1 91
CANYON 7870 12.0 11.5 104 13.8 17.6 78
MADISON PLATEAU 7750 22.4 22.2 101 25.7 28.3 91
WEST YELLOWSTONE 6700 .8 4.2 19 14.2 15.6 91
WHISKEY CREEK 6800 11.0 15.4 71 19.1 21.9 87
----- -----
Basin wide percent 96 88
YELLOWSTONE
BEARTOOTH LAKE 9360 19.3 23.4 82 19.8 21.4 93
BURNT MTN 5880 .0 .0 * 11.4 15.0 76
CANYON 7870 12.0 11.5 104 13.8 17.6 78
COLE CREEK 7850 13.8 16.3 85 10.7 15.7 68
EVENING STAR 9200 26.3 24.6 107 30.2 29.7 102
FISHER CREEK 9100 32.1 33.2 97 33.0 34.4 96
NORTHEAST ENTRANCE 7350 4.4 4.6 96 12.1 13.4 90
PARKER PEAK 9400 25.6 21.8 117 22.9 19.6 117
SYLVAN LAKE 8420 18.7 20.3 92 25.3 24.5 103
THUMB DIVIDE 7980 15.3 13.9 110 18.7 20.4 92
TWO OCEAN PLATEAU 9240 31.2 29.3 106 27.3 29.5 93
WHITE MILL 8700 24.8 23.7 105 23.5 25.7 91
WOLVERINE 7650 7.0 4.8 146 11.9 13.4 89
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Basin wide percent 101 93
WIND RIVER
BURROUGHS CREEK 8750 12.9 13.0 99 12.3 17.4 71
CASTLE CREEK 8400 1.0 -M * 8.7 -M *
COLD SPRINGS 9630 4.2 2.4 175 9.7 11.9 82
DEER PARK 9700 13.7 16.3 84 16.0 22.9 70
HOBBS PARK 10100 13.8 15.8 87 13.1 16.2 81
KIRWIN 9550 11.0 10.2 108 12.7 13.3 95
LITTLE WARM 9370 10.2 9.2 111 12.9 14.7 88
OWL CREEK 8975 5.2 2.0 260 7.0 7.5 93
SOUTH PASS 9040 12.7 15.2 84 11.8 19.8 60
ST. LAWRENCE ALT 8620 3.4 4.2 81 9.5 11.0 86
TOGWOTEE PASS 9580 23.2 24.6 94 24.4 26.6 92
TOWNSEND CREEK 8700 8.0 8.4 95 11.4 14.5 79
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Basin wide percent 98 80
BIGHORN BASIN
BALD MTN. 9380 17.6 20.6 85 12.7 19.1 66
BEAR TRAP MEADOW 8200 8.8 1.6 550 11.1 10.1 110
BONE SPRINGS DIV 9350 15.3 16.5 93 13.5 17.6 77
GRAVE SPRINGS 8550 8.1 9.1 89 9.9 12.3 80
KIRWIN 9550 11.0 10.2 108 12.7 13.3 95
MARQUETTE 8760 9.2 -M * 10.8 -M *
MIDDLE POWDER 7760 13.6 12.2 111 15.6 13.7 114
OWL CREEK 8975 5.2 2.0 260 7.0 7.5 93
POWDER RIVER PASS 9480 12.7 10.0 127 15.8 14.5 109
SHELL CREEK 9580 17.0 15.9 107 15.4 15.7 98
TIMBER CREEK 7950 4.2 3.6 117 9.2 9.3 99
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Basin wide percent 112 92
SHOSHONE RIVER
BLACKWATER 9780 25.8 24.7 104 25.3 22.8 111
EVENING STAR 9200 26.3 24.6 107 30.2 29.7 102
MARQUETTE 8760 9.2 -M * 10.8 -M *
SYLVAN ROAD 7120 3.6 7.5 48 16.7 18.1 92
YOUNTS PEAK 8350 14.2 15.1 94 13.1 17.2 76
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Basin wide percent 97 97
POWDER RIVER
BEAR TRAP MEADOW 8200 8.8 1.6 550 11.1 10.1 110
CLOUD PEAK RESERVOIR 9860 15.2 16.5 92 14.0 16.0 88
GRAVE SPRINGS 8550 8.1 9.1 89 9.9 12.3 80
HANSEN SAWMILL 8360 6.5 3.8 171 9.7 10.3 94
MIDDLE POWDER 7760 13.6 12.2 111 15.6 13.7 114
POWDER RIVER PASS 9480 12.7 10.0 127 15.8 14.5 109
SOLDIER PARK 8720 5.7 -M * 9.5 -M *
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Basin wide percent 122 99
TONGUE RIVER
BIG GOOSE 7990 8.7 9.1 96 10.7 13.5 79
BONE SPRINGS DIV 9350 15.3 16.5 93 13.5 17.6 77
BURGESS JUNCTION 7880 11.5 12.3 93 11.4 14.3 80
DOME LAKE 8880 10.5 11.7 90 11.4 15.9 72
LITTLE GOOSE 8870 9.7 -M * 13.7 -M *
SUCKER CREEK 8880 13.6 12.5 109 14.7 16.7 88
TIE CREEK 6870 5.4 3.0 180 12.4 13.7 91
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Basin wide percent 100 81
BELLE FOURCHE
COLE CANYON 5910 5.2 .4 1300* 10.3 11.2 92
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Basin wide percent 1300* 92
CHEYENNE RIVER BASIN
BLIND PARK 6890 6.0 2.7 222 14.0 13.8 101
NORTH RAPID CREEK 6130 6.1 2.7 226 11.7 11.8 99
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Basin wide percent 224 100
UPPER N. PLATTE
ARAPAHO RIDGE 10960 23.3 22.1 105 23.0 25.7 89
BLACKHALL MTN 9820 29.8 -M * 30.6 -M *
COLUMBINE 9160 21.6 19.9 109 25.8 27.9 92
DIVIDE PEAK 8880 15.9 17.9 89 21.4 23.8 90
JOE WRIGHT 10120 22.3 23.4 95 29.7 29.2 102
LAPRELE CREEK 8375 6.3 7.1 89 10.5 14.6 72
MED BOW 10500 4.4 -M * 32.8 -M *
NORTH FRENCH CREEK 10130 27.4 32.9 83 26.6 30.0 89
NEVER SUMMER 10280 21.1 21.4 99 16.0 -M *
OLD BATTLE 10000 30.5 34.4 89 32.4 38.4 84
RAWAH 9020 13.4 7.8 172 17.3 16.8 103
SAGE CREEK BASIN 7850 -M 1.7 * 11.5 15.8 73
SAND LAKE 10050 26.6 31.2 85 26.3 28.4 93
SOUTH BRUSH CREEK 8440 10.2 10.0 102 14.7 17.4 84
TOWER 10500 38.6 49.7 78 23.6 43.8 54
WEBBER SPRINGS 9250 22.4 22.0 102 25.5 29.4 87
WILLOW CREEK PASS 9540 18.3 13.8 133 17.8 15.3 116
ZIRKEL 9340 26.3 21.9 120 31.6 30.5 104
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Basin wide percent 97 87
SWEETWATER
DEER PARK 9700 13.7 16.3 84 16.0 22.9 70
LARSEN CREEK 9000 1.2 -M * 11.8 -M *
SOUTH PASS 9040 12.7 15.2 84 11.8 19.8 60
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Basin wide percent 84 65
LOWER N. PLATTE
CASPER MTN. 7900 13.4 14.1 95 11.4 17.5 65
LAPRELE CREEK 8375 6.3 7.1 89 10.5 14.6 72
RENO HILL 8400 13.0 13.6 96 15.4 18.3 84
WINDY PEAK 7900 5.5 5.5 100 9.5 12.6 75
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Basin wide percent 95 74
LARAMIE RIVER
BROOKLYN LAKE 10240 21.1 23.0 92 21.1 24.1 88
CINNABAR PARK 9574 14.1 20.1 70 22.1 26.4 84
CROW CREEK 8330 4.9 .0 * 10.7 13.0 82
DEADMAN HILL 10220 18.1 18.5 98 17.6 20.1 88
RAWAH 9020 13.4 7.8 172 17.3 16.8 103
ROACH 9700 16.9 17.0 99 19.1 21.7 88
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Basin wide percent 102 88
S. PLATTE
BLACK MOUNTAIN 8920 11.8 -M * 14.1 -M *
CROW CREEK 8330 4.9 .0 * 10.7 13.0 82
DEADMAN HILL 10220 18.1 18.5 98 17.6 20.1 88
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Basin wide percent 124* 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.5 1.0 450* 13.2 16.8 79
DIVIDE PEAK 8880 15.9 17.9 89 21.4 23.8 90
ELK RIVER 8700 15.9 14.3 111 19.5 22.2 88
LITTLE SNAKE RIVER 8915 23.2 23.1 100 29.3 32.0 92
OLD BATTLE 10000 30.5 34.4 89 32.4 38.4 84
SAGE CREEK BASIN 7850 -M 1.7 * 11.5 15.8 73
SANDSTONE RS 8150 8.7 7.7 113 14.4 20.3 71
WHISKEY PARK 8950 27.2 25.7 106 29.6 30.8 96
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Basin wide percent 101 86
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.5 11.8 97 11.9 14.8 80
BLIND BULL SUM 8650 22.6 24.1 94 16.3 20.8 78
EAST RIM DIVIDE 7930 6.9 8.8 78 10.2 12.5 82
ELKHART PARK G.S. 9400 10.6 11.8 90 11.4 14.6 78
GROS VENTRE SUMMIT 8750 9.8 12.1 81 13.0 14.2 92
GUNSIGHT PASS 9820 12.2 13.3 92 13.6 15.5 88
KENDALL R.S. 7740 4.5 5.9 76 12.0 15.1 79
LOOMIS PARK 8240 10.3 11.5 90 15.3 18.5 83
NEW FORK LAKE 8340 5.9 7.1 83 7.9 11.7 68
POCKET CREEK 9360 8.8 -M * 11.4 -M *
SNIDER BASIN 8060 8.2 10.0 82 15.1 15.2 99
SPRING CREEK DIVIDE 9000 26.3 24.0 110 25.1 25.6 98
TRIPLE PEAK 8500 21.9 18.8 116 25.8 27.3 95
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Basin wide percent 95 86
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.5 -M * 12.3 -M *
BUCK PASTURE 9700 15.5 -M * 18.1 -M *
EF BLACKS FORK GS 9308 14.6 -M * 12.7 -M *
HAMS FORK 7840 5.8 4.4 132 10.7 12.7 84
HEWINTA 9519 11.4 6.1 187 15.0 15.7 96
HICKERSON PARK 9145 7.8 5.0 156 11.9 11.7 102
HOLE-IN-ROCK 9150 10.8 4.2 257 13.1 11.2 117
INDIAN CREEK 9425 24.0 23.8 101 20.9 24.4 86
KELLEY R.S. 8180 12.9 11.8 109 15.7 19.7 80
SPIRIT LK 10223 13.0 -M * 17.3 -M *
STEEL CREEK PARK 10200 16.5 16.7 99 18.2 18.6 98
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Basin wide percent 124 93
UPPER BEAR RIVER
BEAR RIVER RS 8500 5.5 -M * 13.4 -M *
BUG LAKE 7950 13.5 16.1 84 18.0 21.1 85
BURTS MILLER RANCH 8000 2.2 -M * 8.7 -M *
CHALK CREEK #1 8993 21.9 24.7 89 24.3 27.8 87
HAYDEN FORK 9212 12.7 10.1 126 19.6 23.2 84
KELLEY R.S. 8180 12.9 11.8 109 15.7 19.7 80
LILY LAKE 9156 13.4 9.7 138 15.1 19.0 79
MONTE CRISTO 8960 23.2 27.3 85 24.8 28.5 87
SALT RIVER SUMMIT 7760 9.7 8.2 118 15.9 18.0 88
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Basin wide percent 99 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.
