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 FRIDAY: APRIL 19 , 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 15.2 12.0 127 21.0 21.7 97
BLACK BEAR 8170 38.3 36.8 104 36.4 39.6 92
BLIND BULL SUM 8650 21.5 24.0 90 15.6 20.1 78
COTTONWOOD CREEK 7670 17.9 18.8 95 24.9 25.7 97
EAST RIM DIVIDE 7930 8.1 9.6 84 9.3 12.2 76
GRAND TARGHEE 9260 38.9 41.9 93 29.0 32.4 90
GRANITE CREEK 6770 11.9 11.1 107 16.3 20.2 81
GRASSY LAKE 7265 28.4 31.5 90 32.9 37.2 88
GROS VENTRE SUMMIT 8750 10.3 13.2 78 12.3 13.6 90
GUNSIGHT PASS 9820 11.7 13.6 86 12.7 14.8 86
LEWIS LAKE DIVIDE 7850 30.7 30.3 101 33.4 36.6 91
PHILLIPS BENCH 8200 23.7 25.7 92 25.2 29.0 87
SALT RIVER SUMMIT 7760 9.8 10.0 98 15.3 17.3 88
SNAKE RIVER STATION 6920 13.8 11.5 120 22.3 23.4 95
SPRING CREEK DIVIDE 9000 24.5 23.5 104 23.4 24.6 95
THUMB DIVIDE 7980 15.6 14.5 108 18.1 19.6 92
TOGWOTEE PASS 9580 22.3 23.7 94 23.2 25.5 91
TWO OCEAN PLATEAU 9240 30.0 27.9 108 25.8 28.4 91
WILLOW CREEK 8380 27.0 26.8 101 33.2 35.1 95
YOUNTS PEAK 8350 13.2 15.1 87 12.3 16.6 74
----- -----
Basin wide percent 98 90
MADISON-GALLATIN
BLACK BEAR 8170 38.3 36.8 104 36.4 39.6 92
CANYON 7870 12.1 12.3 98 13.5 16.9 80
MADISON PLATEAU 7750 22.2 22.9 97 25.3 27.4 92
WEST YELLOWSTONE 6700 6.2 7.8 79 14.1 15.0 94
WHISKEY CREEK 6800 11.2 15.2 74 18.9 21.1 90
----- -----
Basin wide percent 95 90
YELLOWSTONE
BEARTOOTH LAKE 9360 18.8 23.2 81 18.9 20.6 92
BURNT MTN 5880 1.0 .0 * 10.5 14.1 74
CANYON 7870 12.1 12.3 98 13.5 16.9 80
COLE CREEK 7850 13.0 16.1 81 9.9 14.4 69
EVENING STAR 9200 25.6 24.9 103 28.8 28.6 101
FISHER CREEK 9100 30.7 32.3 95 31.6 33.2 95
NORTHEAST ENTRANCE 7350 5.6 7.0 80 11.8 12.9 91
PARKER PEAK 9400 23.4 20.8 112 21.8 18.6 117
SYLVAN LAKE 8420 18.7 20.4 92 24.7 23.4 106
THUMB DIVIDE 7980 15.6 14.5 108 18.1 19.6 92
TWO OCEAN PLATEAU 9240 30.0 27.9 108 25.8 28.4 91
WHITE MILL 8700 23.8 23.6 101 22.6 24.8 91
WOLVERINE 7650 6.1 7.5 81 10.7 12.8 84
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Basin wide percent 97 93
WIND RIVER
BURROUGHS CREEK 8750 12.6 13.1 96 11.5 16.7 69
CASTLE CREEK 8400 3.0 -M * 8.2 -M *
COLD SPRINGS 9630 4.4 4.9 90 9.1 10.8 84
DEER PARK 9700 13.4 16.2 83 15.3 21.3 72
HOBBS PARK 10100 13.0 14.8 88 12.4 14.7 84
KIRWIN 9550 10.1 10.0 101 11.7 12.3 95
LITTLE WARM 9370 10.1 10.2 99 12.4 13.8 90
OWL CREEK 8975 6.0 4.2 143 6.5 6.7 97
SOUTH PASS 9040 12.0 15.6 77 11.3 18.5 61
ST. LAWRENCE ALT 8620 3.0 5.4 56 8.9 9.8 91
TOGWOTEE PASS 9580 22.3 23.7 94 23.2 25.5 91
TOWNSEND CREEK 8700 7.8 9.6 81 10.7 13.1 82
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Basin wide percent 90 81
BIGHORN BASIN
BALD MTN. 9380 16.1 19.7 82 11.2 18.1 62
BEAR TRAP MEADOW 8200 8.4 3.5 240 10.3 9.3 111
BONE SPRINGS DIV 9350 15.0 16.2 93 12.5 16.6 75
GRAVE SPRINGS 8550 7.6 9.6 79 9.5 11.5 83
KIRWIN 9550 10.1 10.0 101 11.7 12.3 95
MARQUETTE 8760 8.4 -M * 10.0 -M *
MIDDLE POWDER 7760 13.4 12.5 107 14.9 12.7 117
OWL CREEK 8975 6.0 4.2 143 6.5 6.7 97
POWDER RIVER PASS 9480 12.2 10.2 120 14.3 13.6 105
SHELL CREEK 9580 15.0 15.3 98 13.3 14.8 90
TIMBER CREEK 7950 4.5 4.9 92 8.3 8.4 99
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Basin wide percent 102 91
SHOSHONE RIVER
BLACKWATER 9780 24.6 23.8 103 24.1 21.7 111
EVENING STAR 9200 25.6 24.9 103 28.8 28.6 101
MARQUETTE 8760 8.4 -M * 10.0 -M *
SYLVAN ROAD 7120 5.8 10.0 58 16.6 17.5 95
YOUNTS PEAK 8350 13.2 15.1 87 12.3 16.6 74
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Basin wide percent 94 97
POWDER RIVER
BEAR TRAP MEADOW 8200 8.4 3.5 240 10.3 9.3 111
CLOUD PEAK RESERVOIR 9860 14.0 15.7 89 12.4 14.7 84
GRAVE SPRINGS 8550 7.6 9.6 79 9.5 11.5 83
HANSEN SAWMILL 8360 6.6 5.0 132 8.8 9.5 93
MIDDLE POWDER 7760 13.4 12.5 107 14.9 12.7 117
POWDER RIVER PASS 9480 12.2 10.2 120 14.3 13.6 105
SOLDIER PARK 8720 5.3 -M * 8.6 -M *
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Basin wide percent 110 98
TONGUE RIVER
BIG GOOSE 7990 7.8 9.4 83 9.4 12.5 75
BONE SPRINGS DIV 9350 15.0 16.2 93 12.5 16.6 75
BURGESS JUNCTION 7880 11.1 12.4 90 10.5 13.4 78
DOME LAKE 8880 9.6 11.8 81 10.2 14.8 69
LITTLE GOOSE 8870 9.1 -M * 12.3 -M *
SUCKER CREEK 8880 12.8 12.7 101 13.5 15.6 87
TIE CREEK 6870 4.4 4.5 98 10.9 12.7 86
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Basin wide percent 91 78
BELLE FOURCHE
COLE CANYON 5910 3.9 2.2 177 9.2 10.3 89
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Basin wide percent 177 89
CHEYENNE RIVER BASIN
BLIND PARK 6890 5.8 4.2 138 13.0 12.8 102
NORTH RAPID CREEK 6130 6.1 4.4 139 10.8 10.6 102
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Basin wide percent 138 102
UPPER N. PLATTE
ARAPAHO RIDGE 10960 21.9 21.4 102 22.0 24.3 91
BLACKHALL MTN 9820 28.1 -M * 28.6 -M *
COLUMBINE 9160 22.0 20.7 106 24.4 26.8 91
DIVIDE PEAK 8880 14.9 19.1 78 20.0 22.7 88
JOE WRIGHT 10120 20.5 22.2 92 28.1 27.6 102
LAPRELE CREEK 8375 6.9 8.3 83 10.2 13.5 76
MED BOW 10500 11.3 -M * 30.9 -M *
NORTH FRENCH CREEK 10130 25.7 32.0 80 24.7 28.3 87
NEVER SUMMER 10280 20.0 20.6 97 15.2 -M *
OLD BATTLE 10000 28.3 32.5 87 30.0 36.8 82
RAWAH 9020 13.1 8.6 152 16.3 15.5 105
SAGE CREEK BASIN 7850 -M 6.6 * 10.7 15.2 70
SAND LAKE 10050 25.4 30.4 84 25.0 26.6 94
SOUTH BRUSH CREEK 8440 10.2 9.9 103 13.7 16.3 84
TOWER 10500 35.7 47.8 75 26.2 41.8 63
WEBBER SPRINGS 9250 21.4 22.3 96 24.2 28.2 86
WILLOW CREEK PASS 9540 17.2 12.9 133 17.1 14.3 120
ZIRKEL 9340 24.7 22.8 108 29.4 29.7 99
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Basin wide percent 93 88
SWEETWATER
DEER PARK 9700 13.4 16.2 83 15.3 21.3 72
LARSEN CREEK 9000 4.4 -M * 11.5 -M *
SOUTH PASS 9040 12.0 15.6 77 11.3 18.5 61
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Basin wide percent 80 67
LOWER N. PLATTE
CASPER MTN. 7900 12.7 14.5 88 10.7 16.4 65
LAPRELE CREEK 8375 6.9 8.3 83 10.2 13.5 76
RENO HILL 8400 13.2 14.0 94 15.0 16.9 89
WINDY PEAK 7900 6.2 6.7 93 9.4 11.5 82
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Basin wide percent 90 78
LARAMIE RIVER
BROOKLYN LAKE 10240 20.3 22.1 92 19.9 22.6 88
CINNABAR PARK 9574 14.3 20.3 70 20.3 25.3 80
CROW CREEK 8330 5.9 1.1 536 10.1 12.0 84
DEADMAN HILL 10220 16.9 16.8 101 16.5 18.7 88
RAWAH 9020 13.1 8.6 152 16.3 15.5 105
ROACH 9700 15.9 16.5 96 17.8 20.4 87
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Basin wide percent 101 88
S. PLATTE
BLACK MOUNTAIN 8920 11.5 -M * 13.2 -M *
CROW CREEK 8330 5.9 1.1 536 10.1 12.0 84
DEADMAN HILL 10220 16.9 16.8 101 16.5 18.7 88
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Basin wide percent 127 87
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.9 4.9 100 12.3 16.0 77
DIVIDE PEAK 8880 14.9 19.1 78 20.0 22.7 88
ELK RIVER 8700 -M 15.8 * -M 21.1 *
LITTLE SNAKE RIVER 8915 21.5 24.7 87 27.3 31.2 88
OLD BATTLE 10000 28.3 32.5 87 30.0 36.8 82
SAGE CREEK BASIN 7850 -M 6.6 * 10.7 15.2 70
SANDSTONE RS 8150 8.8 10.4 85 13.5 19.4 70
WHISKEY PARK 8950 25.6 26.0 98 27.6 29.5 94
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Basin wide percent 88 83
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.9 12.7 86 11.3 14.0 81
BLIND BULL SUM 8650 21.5 24.0 90 15.6 20.1 78
EAST RIM DIVIDE 7930 8.1 9.6 84 9.3 12.2 76
ELKHART PARK G.S. 9400 9.6 11.9 81 10.5 14.0 75
GROS VENTRE SUMMIT 8750 10.3 13.2 78 12.3 13.6 90
GUNSIGHT PASS 9820 11.7 13.6 86 12.7 14.8 86
KENDALL R.S. 7740 6.9 8.8 78 11.6 14.7 79
LOOMIS PARK 8240 11.1 13.1 85 14.5 17.9 81
NEW FORK LAKE 8340 6.9 9.0 77 7.3 11.2 65
POCKET CREEK 9360 8.8 -M * 10.7 -M *
SNIDER BASIN 8060 8.8 10.9 81 14.2 14.7 97
SPRING CREEK DIVIDE 9000 24.5 23.5 104 23.4 24.6 95
TRIPLE PEAK 8500 21.7 19.3 112 24.6 26.2 94
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Basin wide percent 90 84
LOWER GREEN RIVER
BLACKS FORK JCT 8870 8.3 -M * 11.7 -M *
BUCK PASTURE 9700 15.1 -M * 17.5 -M *
EF BLACKS FORK GS 9308 15.6 -M * 11.9 -M *
HAMS FORK 7840 7.3 7.1 103 10.1 11.9 85
HEWINTA 9519 14.3 8.3 172 14.3 14.9 96
HICKERSON PARK 9145 7.7 5.6 138 11.2 11.0 102
HOLE-IN-ROCK 9150 10.1 6.0 168 12.5 10.5 119
INDIAN CREEK 9425 22.5 23.2 97 19.5 23.5 83
KELLEY R.S. 8180 12.5 12.9 97 14.3 18.8 76
SPIRIT LK 10223 13.0 -M * 16.8 -M *
STEEL CREEK PARK 10200 15.7 16.2 97 17.5 17.6 99
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Basin wide percent 114 92
UPPER BEAR RIVER
BEAR RIVER RS 8500 8.6 -M * 13.0 -M *
BUG LAKE 7950 13.8 17.6 78 17.7 20.2 88
BURTS MILLER RANCH 8000 6.4 -M * 8.5 -M *
CHALK CREEK #1 8993 21.5 24.7 87 23.7 26.6 89
HAYDEN FORK 9212 13.7 12.2 112 18.8 22.3 84
KELLEY R.S. 8180 12.5 12.9 97 14.3 18.8 76
LILY LAKE 9156 12.6 11.0 115 14.7 18.2 81
MONTE CRISTO 8960 22.4 27.6 81 23.9 27.2 88
SALT RIVER SUMMIT 7760 9.8 10.0 98 15.3 17.3 88
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Basin wide percent 92 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.
