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 28 , 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 12.0 10.2 118 21.7 22.4 97
BLACK BEAR 8170 41.1 37.1 111 37.3 41.2 91
BLIND BULL SUM 8650 22.4 23.9 94 16.3 20.9 78
COTTONWOOD CREEK 7670 17.0 16.4 104 26.0 26.9 97
EAST RIM DIVIDE 7930 5.7 8.6 66 10.2 12.6 81
GRAND TARGHEE 9260 41.5 43.8 95 31.1 33.9 92
GRANITE CREEK 6770 9.6 8.8 109 16.7 20.9 80
GRASSY LAKE 7265 26.2 29.9 88 34.0 38.7 88
GROS VENTRE SUMMIT 8750 10.2 12.0 85 13.0 14.3 91
GUNSIGHT PASS 9820 12.3 13.2 93 13.7 15.7 87
LEWIS LAKE DIVIDE 7850 28.8 30.5 94 34.1 38.0 90
PHILLIPS BENCH 8200 25.0 25.6 98 26.7 30.2 88
SALT RIVER SUMMIT 7760 8.9 8.2 109 15.9 18.1 88
SNAKE RIVER STATION 6920 9.8 8.9 110 23.0 24.3 95
SPRING CREEK DIVIDE 9000 25.9 24.1 107 25.1 25.8 97
THUMB DIVIDE 7980 14.3 13.7 104 18.8 20.6 91
TOGWOTEE PASS 9580 22.9 24.7 93 24.4 26.8 91
TWO OCEAN PLATEAU 9240 31.0 29.4 105 27.3 29.6 92
WILLOW CREEK 8380 26.8 24.5 109 34.7 36.9 94
YOUNTS PEAK 8350 14.2 15.2 93 13.3 17.3 77
----- -----
Basin wide percent 99 90
MADISON-GALLATIN
BLACK BEAR 8170 41.1 37.1 111 37.3 41.2 91
CANYON 7870 11.4 11.3 101 13.8 17.7 78
MADISON PLATEAU 7750 21.7 22.1 98 25.7 28.4 90
WEST YELLOWSTONE 6700 .4 3.7 11 14.1 15.6 90
WHISKEY CREEK 6800 10.7 15.2 70 19.1 22.0 87
----- -----
Basin wide percent 95 88
YELLOWSTONE
BEARTOOTH LAKE 9360 19.4 23.2 84 19.8 21.6 92
BURNT MTN 5880 .0 .0 * 11.4 15.2 75
CANYON 7870 11.4 11.3 101 13.8 17.7 78
COLE CREEK 7850 13.8 16.3 85 10.7 15.8 68
EVENING STAR 9200 26.1 24.8 105 30.2 29.9 101
FISHER CREEK 9100 32.2 33.1 97 33.0 34.6 95
NORTHEAST ENTRANCE 7350 3.6 4.4 82 12.2 13.5 90
PARKER PEAK 9400 25.2 21.7 116 22.9 19.6 117
SYLVAN LAKE 8420 18.2 20.3 90 25.3 24.6 103
THUMB DIVIDE 7980 14.3 13.7 104 18.8 20.6 91
TWO OCEAN PLATEAU 9240 31.0 29.4 105 27.3 29.6 92
WHITE MILL 8700 24.5 23.8 103 23.5 25.8 91
WOLVERINE 7650 6.6 4.2 157 11.9 13.5 88
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Basin wide percent 100 92
WIND RIVER
BURROUGHS CREEK 8750 12.6 13.0 97 12.4 17.6 70
CASTLE CREEK 8400 .6 -M * 8.8 -M *
COLD SPRINGS 9630 3.7 2.0 185 9.6 12.0 80
DEER PARK 9700 13.3 16.3 82 15.9 23.0 69
HOBBS PARK 10100 13.2 15.8 84 13.2 16.3 81
KIRWIN 9550 10.8 10.3 105 12.8 13.4 96
LITTLE WARM 9370 9.6 9.1 105 13.0 14.8 88
OWL CREEK 8975 4.5 1.7 265 7.0 7.6 92
SOUTH PASS 9040 12.4 15.1 82 11.9 20.0 60
ST. LAWRENCE ALT 8620 2.9 3.8 76 9.5 11.2 85
TOGWOTEE PASS 9580 22.9 24.7 93 24.4 26.8 91
TOWNSEND CREEK 8700 8.0 8.2 98 11.5 14.6 79
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Basin wide percent 95 80
BIGHORN BASIN
BALD MTN. 9380 17.4 20.5 85 12.7 19.2 66
BEAR TRAP MEADOW 8200 8.1 1.5 540 11.1 10.2 109
BONE SPRINGS DIV 9350 15.9 16.5 96 13.6 17.7 77
GRAVE SPRINGS 8550 8.4 9.2 91 9.9 12.4 80
KIRWIN 9550 10.8 10.3 105 12.8 13.4 96
MARQUETTE 8760 9.0 -M * 10.8 -M *
MIDDLE POWDER 7760 13.5 12.1 112 15.6 13.8 113
OWL CREEK 8975 4.5 1.7 265 7.0 7.6 92
POWDER RIVER PASS 9480 12.4 9.8 127 15.8 14.6 108
SHELL CREEK 9580 16.8 16.0 105 15.5 15.8 98
TIMBER CREEK 7950 3.5 3.5 100 9.2 9.5 97
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Basin wide percent 110 92
SHOSHONE RIVER
BLACKWATER 9780 25.6 24.9 103 25.4 22.9 111
EVENING STAR 9200 26.1 24.8 105 30.2 29.9 101
MARQUETTE 8760 9.0 -M * 10.8 -M *
SYLVAN ROAD 7120 2.3 7.1 32 16.6 18.2 91
YOUNTS PEAK 8350 14.2 15.2 93 13.3 17.3 77
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Basin wide percent 95 97
POWDER RIVER
BEAR TRAP MEADOW 8200 8.1 1.5 540 11.1 10.2 109
CLOUD PEAK RESERVOIR 9860 14.5 16.5 88 14.3 16.1 89
GRAVE SPRINGS 8550 8.4 9.2 91 9.9 12.4 80
HANSEN SAWMILL 8360 6.1 3.6 169 9.7 10.5 92
MIDDLE POWDER 7760 13.5 12.1 112 15.6 13.8 113
POWDER RIVER PASS 9480 12.4 9.8 127 15.8 14.6 108
SOLDIER PARK 8720 5.3 -M * 9.6 -M *
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Basin wide percent 120 98
TONGUE RIVER
BIG GOOSE 7990 8.6 9.1 95 10.7 13.6 79
BONE SPRINGS DIV 9350 15.9 16.5 96 13.6 17.7 77
BURGESS JUNCTION 7880 11.6 12.2 95 11.5 14.4 80
DOME LAKE 8880 10.2 11.7 87 11.5 16.0 72
LITTLE GOOSE 8870 9.5 -M * 13.7 -M *
SUCKER CREEK 8880 13.2 12.5 106 14.8 16.9 88
TIE CREEK 6870 4.9 2.8 175 12.5 13.8 91
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Basin wide percent 99 81
BELLE FOURCHE
COLE CANYON 5910 4.8 .3 1600* 10.3 11.4 90
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Basin wide percent 1600* 90
CHEYENNE RIVER BASIN
BLIND PARK 6890 5.3 2.3 230 14.0 13.9 101
NORTH RAPID CREEK 6130 5.6 2.3 243 11.8 11.9 99
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Basin wide percent 237 100
UPPER N. PLATTE
ARAPAHO RIDGE 10960 23.3 22.3 104 23.0 25.8 89
BLACKHALL MTN 9820 29.7 -M * 30.5 -M *
COLUMBINE 9160 20.1 19.5 103 25.8 28.1 92
DIVIDE PEAK 8880 15.5 18.0 86 21.4 23.9 90
JOE WRIGHT 10120 22.2 23.5 94 29.8 29.3 102
LAPRELE CREEK 8375 5.7 6.9 83 10.5 14.7 71
MED BOW 10500 4.5 -M * 32.8 -M *
NORTH FRENCH CREEK 10130 26.7 33.0 81 26.7 30.2 88
NEVER SUMMER 10280 20.9 21.5 97 16.0 -M *
OLD BATTLE 10000 30.6 34.6 88 32.5 38.6 84
RAWAH 9020 12.8 7.4 173 17.3 17.0 102
SAGE CREEK BASIN 7850 -M 1.4 * 11.5 15.9 72
SAND LAKE 10050 26.4 31.2 85 26.4 28.5 93
SOUTH BRUSH CREEK 8440 9.4 9.9 95 14.8 17.5 85
TOWER 10500 38.5 49.8 77 23.3 44.1 53
WEBBER SPRINGS 9250 21.9 22.0 100 25.4 29.5 86
WILLOW CREEK PASS 9540 18.1 13.8 131 17.9 15.4 116
ZIRKEL 9340 25.9 21.6 120 31.6 30.5 104
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Basin wide percent 95 87
SWEETWATER
DEER PARK 9700 13.3 16.3 82 15.9 23.0 69
LARSEN CREEK 9000 .8 -M * 11.7 -M *
SOUTH PASS 9040 12.4 15.1 82 11.9 20.0 60
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Basin wide percent 82 65
LOWER N. PLATTE
CASPER MTN. 7900 13.1 14.1 93 11.4 17.6 65
LAPRELE CREEK 8375 5.7 6.9 83 10.5 14.7 71
RENO HILL 8400 12.7 13.4 95 15.5 18.4 84
WINDY PEAK 7900 5.0 5.1 98 9.5 12.7 75
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Basin wide percent 92 74
LARAMIE RIVER
BROOKLYN LAKE 10240 20.8 23.1 90 21.1 24.2 87
CINNABAR PARK 9574 14.3 20.0 72 22.1 26.6 83
CROW CREEK 8330 4.0 .0 * 10.7 13.1 82
DEADMAN HILL 10220 17.8 18.6 96 17.7 20.2 88
RAWAH 9020 12.8 7.4 173 17.3 17.0 102
ROACH 9700 16.5 17.1 96 19.2 21.9 88
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Basin wide percent 100 88
S. PLATTE
BLACK MOUNTAIN 8920 11.1 -M * 14.1 -M *
CROW CREEK 8330 4.0 .0 * 10.7 13.1 82
DEADMAN HILL 10220 17.8 18.6 96 17.7 20.2 88
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Basin wide percent 117* 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 3.7 .6 617* 13.3 16.9 79
DIVIDE PEAK 8880 15.5 18.0 86 21.4 23.9 90
ELK RIVER 8700 15.1 14.1 107 19.6 22.3 88
LITTLE SNAKE RIVER 8915 22.6 22.9 99 29.3 32.1 91
OLD BATTLE 10000 30.6 34.6 88 32.5 38.6 84
SAGE CREEK BASIN 7850 -M 1.4 * 11.5 15.9 72
SANDSTONE RS 8150 7.5 7.2 104 14.4 20.4 71
WHISKEY PARK 8950 26.5 25.9 102 29.6 30.9 96
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Basin wide percent 99 85
UPPER GREEN RIVER
BIG SANDY OPENING 9080 11.5 11.6 99 11.9 14.9 80
BLIND BULL SUM 8650 22.4 23.9 94 16.3 20.9 78
EAST RIM DIVIDE 7930 5.7 8.6 66 10.2 12.6 81
ELKHART PARK G.S. 9400 10.6 11.7 91 11.4 14.7 78
GROS VENTRE SUMMIT 8750 10.2 12.0 85 13.0 14.3 91
GUNSIGHT PASS 9820 12.3 13.2 93 13.7 15.7 87
KENDALL R.S. 7740 3.6 5.6 64 12.0 15.2 79
LOOMIS PARK 8240 9.3 11.4 82 15.3 18.6 82
NEW FORK LAKE 8340 5.1 6.9 74 7.8 11.8 66
POCKET CREEK 9360 8.8 -M * 11.5 -M *
SNIDER BASIN 8060 7.5 9.9 76 15.1 15.3 99
SPRING CREEK DIVIDE 9000 25.9 24.1 107 25.1 25.8 97
TRIPLE PEAK 8500 21.0 18.5 114 25.9 27.4 95
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Basin wide percent 92 86
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.1 -M * 12.3 -M *
BUCK PASTURE 9700 15.1 -M * 18.1 -M *
EF BLACKS FORK GS 9308 13.8 -M * 12.7 -M *
HAMS FORK 7840 4.5 4.1 110 10.9 12.8 85
HEWINTA 9519 10.2 5.7 179 15.1 15.8 96
HICKERSON PARK 9145 7.5 4.9 153 11.9 11.8 101
HOLE-IN-ROCK 9150 10.4 3.8 274 13.1 11.2 117
INDIAN CREEK 9425 23.5 23.7 99 20.9 24.6 85
KELLEY R.S. 8180 12.4 11.8 105 15.7 19.8 79
SPIRIT LK 10223 12.6 -M * 17.4 -M *
STEEL CREEK PARK 10200 16.7 16.8 99 18.2 18.7 97
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Basin wide percent 120 92
UPPER BEAR RIVER
BEAR RIVER RS 8500 4.4 -M * 13.3 -M *
BUG LAKE 7950 12.9 15.9 81 18.1 21.3 85
BURTS MILLER RANCH 8000 .7 -M * 8.7 -M *
CHALK CREEK #1 8993 21.5 24.6 87 24.2 27.9 87
HAYDEN FORK 9212 11.8 9.9 119 19.6 23.3 84
KELLEY R.S. 8180 12.4 11.8 105 15.7 19.8 79
LILY LAKE 9156 12.9 9.8 132 15.1 19.2 79
MONTE CRISTO 8960 22.5 27.2 83 24.8 28.7 86
SALT RIVER SUMMIT 7760 8.9 8.2 109 15.9 18.1 88
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Basin wide percent 96 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.
