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 TUESDAY: APRIL 30 , 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 10.9 9.7 112 21.7 22.6 96
BLACK BEAR 8170 40.2 37.4 107 37.3 41.6 90
BLIND BULL SUM 8650 22.0 23.4 94 16.3 21.2 77
COTTONWOOD CREEK 7670 16.6 15.7 106 26.1 27.3 96
EAST RIM DIVIDE 7930 4.1 8.3 49 10.2 12.9 79
GRAND TARGHEE 9260 42.0 44.4 95 31.0 34.4 90
GRANITE CREEK 6770 8.5 8.5 100 16.7 21.3 78
GRASSY LAKE 7265 25.1 29.4 85 34.0 39.1 87
GROS VENTRE SUMMIT 8750 10.1 11.7 86 13.0 14.5 90
GUNSIGHT PASS 9820 12.3 12.8 96 13.6 16.0 85
LEWIS LAKE DIVIDE 7850 28.0 30.3 92 34.2 38.4 89
PHILLIPS BENCH 8200 24.1 25.6 94 26.7 30.5 88
SALT RIVER SUMMIT 7760 7.8 8.0 98 15.9 18.3 87
SNAKE RIVER STATION 6920 9.2 7.9 116 23.0 24.6 93
SPRING CREEK DIVIDE 9000 25.1 24.3 103 25.1 26.1 96
THUMB DIVIDE 7980 13.8 12.9 107 18.7 20.8 90
TOGWOTEE PASS 9580 22.7 24.7 92 24.4 27.1 90
TWO OCEAN PLATEAU 9240 31.5 29.7 106 27.5 29.9 92
WILLOW CREEK 8380 25.9 23.5 110 34.7 37.4 93
YOUNTS PEAK 8350 14.0 15.4 91 13.4 17.5 77
----- -----
Basin wide percent 98 89
MADISON-GALLATIN
BLACK BEAR 8170 40.2 37.4 107 37.3 41.6 90
CANYON 7870 11.4 10.8 106 13.9 17.9 78
MADISON PLATEAU 7750 20.9 21.6 97 25.8 28.8 90
WEST YELLOWSTONE 6700 .0 2.5 0 14.2 15.9 89
WHISKEY CREEK 6800 10.1 14.9 68 19.1 22.2 86
----- -----
Basin wide percent 95 87
YELLOWSTONE
BEARTOOTH LAKE 9360 19.9 22.9 87 20.3 21.8 93
BURNT MTN 5880 .0 .0 * 11.6 15.5 75
CANYON 7870 11.4 10.8 106 13.9 17.9 78
COLE CREEK 7850 14.1 16.4 86 10.9 16.2 67
EVENING STAR 9200 26.6 24.9 107 30.7 30.2 102
FISHER CREEK 9100 32.9 32.8 100 33.5 34.9 96
NORTHEAST ENTRANCE 7350 3.6 3.5 103 12.5 13.7 91
PARKER PEAK 9400 25.6 21.4 120 23.2 19.9 117
SYLVAN LAKE 8420 18.0 20.1 90 25.3 24.9 102
THUMB DIVIDE 7980 13.8 12.9 107 18.7 20.8 90
TWO OCEAN PLATEAU 9240 31.5 29.7 106 27.5 29.9 92
WHITE MILL 8700 24.7 23.8 104 23.8 26.1 91
WOLVERINE 7650 6.5 3.1 210 12.2 13.7 89
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Basin wide percent 103 93
WIND RIVER
BURROUGHS CREEK 8750 12.5 13.0 96 12.4 17.8 70
CASTLE CREEK 8400 .0 -M * 8.8 -M *
COLD SPRINGS 9630 2.5 1.4 179 9.7 12.4 78
DEER PARK 9700 13.0 16.1 81 16.0 23.2 69
HOBBS PARK 10100 13.1 16.0 82 13.3 16.5 81
KIRWIN 9550 10.9 10.4 105 12.8 13.6 94
LITTLE WARM 9370 8.9 8.8 101 13.0 15.3 85
OWL CREEK 8975 3.6 1.2 300 7.0 7.8 90
SOUTH PASS 9040 11.6 15.0 77 11.9 20.2 59
ST. LAWRENCE ALT 8620 1.2 3.0 40 9.5 11.4 83
TOGWOTEE PASS 9580 22.7 24.7 92 24.4 27.1 90
TOWNSEND CREEK 8700 7.3 7.8 94 11.5 14.8 78
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Basin wide percent 91 79
BIGHORN BASIN
BALD MTN. 9380 17.5 20.5 85 12.8 19.5 66
BEAR TRAP MEADOW 8200 7.4 1.1 673 11.1 10.4 107
BONE SPRINGS DIV 9350 16.6 16.6 100 13.7 18.0 76
GRAVE SPRINGS 8550 8.1 9.4 86 9.9 12.6 79
KIRWIN 9550 10.9 10.4 105 12.8 13.6 94
MARQUETTE 8760 9.1 -M * 11.1 -M *
MIDDLE POWDER 7760 13.1 11.8 111 15.7 14.0 112
OWL CREEK 8975 3.6 1.2 300 7.0 7.8 90
POWDER RIVER PASS 9480 12.7 9.6 132 16.0 14.9 107
SHELL CREEK 9580 17.2 16.0 108 15.7 16.1 98
TIMBER CREEK 7950 2.5 3.2 78 9.3 9.8 95
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Basin wide percent 110 91
SHOSHONE RIVER
BLACKWATER 9780 25.8 25.2 102 25.4 23.3 109
EVENING STAR 9200 26.6 24.9 107 30.7 30.2 102
MARQUETTE 8760 9.1 -M * 11.1 -M *
SYLVAN ROAD 7120 1.5 6.3 24 16.8 18.5 91
YOUNTS PEAK 8350 14.0 15.4 91 13.4 17.5 77
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Basin wide percent 95 96
POWDER RIVER
BEAR TRAP MEADOW 8200 7.4 1.1 673 11.1 10.4 107
CLOUD PEAK RESERVOIR 9860 15.0 16.5 91 14.6 16.4 89
GRAVE SPRINGS 8550 8.1 9.4 86 9.9 12.6 79
HANSEN SAWMILL 8360 6.5 2.9 224 10.0 10.7 93
MIDDLE POWDER 7760 13.1 11.8 111 15.7 14.0 112
POWDER RIVER PASS 9480 12.7 9.6 132 16.0 14.9 107
SOLDIER PARK 8720 5.3 -M * 9.8 -M *
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Basin wide percent 122 98
TONGUE RIVER
BIG GOOSE 7990 8.8 9.2 96 11.0 13.8 80
BONE SPRINGS DIV 9350 16.6 16.6 100 13.7 18.0 76
BURGESS JUNCTION 7880 12.2 12.1 101 11.6 14.6 79
DOME LAKE 8880 10.7 11.5 93 11.7 16.2 72
LITTLE GOOSE 8870 9.9 -M * 14.3 -M *
SUCKER CREEK 8880 13.6 12.3 111 14.9 17.1 87
TIE CREEK 6870 4.3 2.7 159 12.8 14.1 91
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Basin wide percent 103 81
BELLE FOURCHE
COLE CANYON 5910 3.8 .3 1267* 10.4 11.5 90
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Basin wide percent 1267* 90
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.2 1.3 323 14.0 14.1 99
NORTH RAPID CREEK 6130 4.4 1.3 338 11.9 12.0 99
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Basin wide percent 331 99
UPPER N. PLATTE
ARAPAHO RIDGE 10960 21.2 22.3 95 23.0 26.0 88
BLACKHALL MTN 9820 29.2 -M * 30.7 -M *
COLUMBINE 9160 17.2 18.6 92 26.1 28.4 92
DIVIDE PEAK 8880 14.0 18.0 78 21.4 24.1 89
JOE WRIGHT 10120 21.1 23.4 90 29.9 29.6 101
LAPRELE CREEK 8375 4.8 6.4 75 10.5 14.9 70
MED BOW 10500 3.9 -M * 32.8 -M *
NORTH FRENCH CREEK 10130 25.8 32.9 78 26.6 30.5 87
NEVER SUMMER 10280 20.4 21.7 94 16.0 -M *
OLD BATTLE 10000 30.5 34.7 88 32.4 39.0 83
RAWAH 9020 10.8 6.5 166 17.4 17.1 102
SAGE CREEK BASIN 7850 -M 1.1 * 11.5 16.1 71
SAND LAKE 10050 25.8 31.3 82 26.4 28.9 91
SOUTH BRUSH CREEK 8440 8.0 9.6 83 14.8 17.7 84
TOWER 10500 37.9 49.9 76 -M 44.5 *
WEBBER SPRINGS 9250 20.8 21.9 95 25.5 29.8 86
WILLOW CREEK PASS 9540 17.5 14.1 124 17.8 15.6 114
ZIRKEL 9340 24.3 21.2 115 31.6 30.8 103
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Basin wide percent 90 90
SWEETWATER
DEER PARK 9700 13.0 16.1 81 16.0 23.2 69
LARSEN CREEK 9000 .1 -M * 11.7 -M *
SOUTH PASS 9040 11.6 15.0 77 11.9 20.2 59
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Basin wide percent 79 64
LOWER N. PLATTE
CASPER MTN. 7900 12.2 13.7 89 11.3 17.8 63
LAPRELE CREEK 8375 4.8 6.4 75 10.5 14.9 70
RENO HILL 8400 12.0 12.8 94 15.4 18.7 82
WINDY PEAK 7900 3.5 4.4 80 9.5 12.9 74
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Basin wide percent 87 73
LARAMIE RIVER
BROOKLYN LAKE 10240 19.9 23.3 85 21.2 24.5 87
CINNABAR PARK 9574 14.8 19.7 75 22.1 26.8 82
CROW CREEK 8330 1.7 .0 * 10.7 13.3 80
DEADMAN HILL 10220 17.2 18.9 91 17.7 20.5 86
RAWAH 9020 10.8 6.5 166 17.4 17.1 102
ROACH 9700 15.5 17.2 90 19.2 22.2 86
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Basin wide percent 93 87
S. PLATTE
BLACK MOUNTAIN 8920 9.7 -M * 14.1 -M *
CROW CREEK 8330 1.7 .0 * 10.7 13.3 80
DEADMAN HILL 10220 17.2 18.9 91 17.7 20.5 86
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Basin wide percent 100* 84
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 2.2 .0 * 13.3 17.0 78
DIVIDE PEAK 8880 14.0 18.0 78 21.4 24.1 89
ELK RIVER 8700 13.3 13.6 98 19.6 22.5 87
LITTLE SNAKE RIVER 8915 21.1 22.5 94 29.4 32.5 90
OLD BATTLE 10000 30.5 34.7 88 32.4 39.0 83
SAGE CREEK BASIN 7850 -M 1.1 * 11.5 16.1 71
SANDSTONE RS 8150 5.6 6.3 89 14.3 20.6 69
WHISKEY PARK 8950 25.0 26.3 95 29.6 31.3 95
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Basin wide percent 92 84
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.9 10.9 100 11.9 15.1 79
BLIND BULL SUM 8650 22.0 23.4 94 16.3 21.2 77
EAST RIM DIVIDE 7930 4.1 8.3 49 10.2 12.9 79
ELKHART PARK G.S. 9400 10.4 11.5 90 11.4 14.9 77
GROS VENTRE SUMMIT 8750 10.1 11.7 86 13.0 14.5 90
GUNSIGHT PASS 9820 12.3 12.8 96 13.6 16.0 85
KENDALL R.S. 7740 2.6 4.8 54 11.9 15.4 77
LOOMIS PARK 8240 8.6 11.2 77 15.4 18.8 82
NEW FORK LAKE 8340 4.2 6.6 64 7.9 12.0 66
POCKET CREEK 9360 8.7 -M * 11.4 -M *
SNIDER BASIN 8060 5.5 9.5 58 15.1 15.5 97
SPRING CREEK DIVIDE 9000 25.1 24.3 103 25.1 26.1 96
TRIPLE PEAK 8500 20.0 17.9 112 25.9 27.8 93
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Basin wide percent 89 85
LOWER GREEN RIVER
BLACKS FORK JCT 8870 6.6 -M * 12.3 -M *
BUCK PASTURE 9700 13.5 -M * 18.1 -M *
EF BLACKS FORK GS 9308 12.3 -M * 12.7 -M *
HAMS FORK 7840 2.8 3.3 85 11.0 13.0 85
HEWINTA 9519 9.1 5.0 182 15.1 16.0 94
HICKERSON PARK 9145 6.5 4.5 144 12.0 11.9 101
HOLE-IN-ROCK 9150 8.9 2.9 307 13.2 11.4 116
INDIAN CREEK 9425 22.6 23.3 97 20.9 24.9 84
KELLEY R.S. 8180 11.5 11.7 98 15.6 20.1 78
SPIRIT LK 10223 11.9 -M * 17.4 -M *
STEEL CREEK PARK 10200 16.1 17.0 95 18.2 18.9 96
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Basin wide percent 114 91
UPPER BEAR RIVER
BEAR RIVER RS 8500 1.8 -M * 13.3 -M *
BUG LAKE 7950 11.6 15.4 75 18.0 21.6 83
BURTS MILLER RANCH 8000 .2 -M * 8.7 -M *
CHALK CREEK #1 8993 20.1 24.4 82 24.2 28.2 86
HAYDEN FORK 9212 9.4 9.5 99 19.6 23.6 83
KELLEY R.S. 8180 11.5 11.7 98 15.6 20.1 78
LILY LAKE 9156 11.7 9.9 118 15.1 19.4 78
MONTE CRISTO 8960 21.2 26.9 79 24.8 29.1 85
SALT RIVER SUMMIT 7760 7.8 8.0 98 15.9 18.3 87
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Basin wide percent 88 83
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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.
