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 MONDAY: APRIL 8 , 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 15.2 96 19.7 20.7 95
BLACK BEAR 8170 37.0 37.1 100 35.3 37.9 93
BLIND BULL SUM 8650 19.7 23.3 85 14.0 19.3 73
COTTONWOOD CREEK 7670 16.3 20.9 78 23.2 24.4 95
EAST RIM DIVIDE 7930 7.6 10.2 75 8.3 11.7 71
GRAND TARGHEE 9260 36.6 38.7 95 27.9 30.7 91
GRANITE CREEK 6770 11.3 14.3 79 14.9 19.5 76
GRASSY LAKE 7265 27.3 31.4 87 31.5 35.6 88
GROS VENTRE SUMMIT 8750 10.2 12.9 79 10.7 12.8 84
GUNSIGHT PASS 9820 10.9 13.9 78 11.6 13.8 84
LEWIS LAKE DIVIDE 7850 29.3 30.0 98 31.9 35.1 91
PHILLIPS BENCH 8200 22.2 25.5 87 23.7 27.9 85
SALT RIVER SUMMIT 7760 8.7 12.7 69 14.1 16.5 85
SNAKE RIVER STATION 6920 13.0 14.8 88 21.3 22.2 96
SPRING CREEK DIVIDE 9000 21.9 22.5 97 21.3 23.6 90
THUMB DIVIDE 7980 14.8 14.7 101 17.0 18.4 92
TOGWOTEE PASS 9580 19.9 22.2 90 21.0 24.1 87
TWO OCEAN PLATEAU 9240 28.2 26.2 108 24.6 26.9 91
WILLOW CREEK 8380 24.6 28.4 87 30.6 33.3 92
YOUNTS PEAK 8350 12.0 14.4 83 11.4 15.6 73
----- -----
Basin wide percent 90 88
MADISON-GALLATIN
BLACK BEAR 8170 37.0 37.1 100 35.3 37.9 93
CANYON 7870 11.3 12.4 91 12.6 16.1 78
MADISON PLATEAU 7750 21.5 21.6 100 24.7 26.1 95
WEST YELLOWSTONE 6700 7.0 9.3 75 13.8 14.1 98
WHISKEY CREEK 6800 11.0 14.8 74 18.1 20.0 90
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Basin wide percent 92 92
YELLOWSTONE
BEARTOOTH LAKE 9360 17.3 21.4 81 17.6 19.5 90
BURNT MTN 5880 .2 4.3 5 8.9 12.9 69
CANYON 7870 11.3 12.4 91 12.6 16.1 78
COLE CREEK 7850 9.8 14.8 66 7.6 12.9 59
EVENING STAR 9200 23.5 23.8 99 26.7 27.1 99
FISHER CREEK 9100 31.4 31.3 100 30.7 31.3 98
NORTHEAST ENTRANCE 7350 5.6 8.9 63 11.3 12.1 93
PARKER PEAK 9400 20.5 19.6 105 19.9 17.5 114
SYLVAN LAKE 8420 17.4 19.4 90 23.0 22.0 105
THUMB DIVIDE 7980 14.8 14.7 101 17.0 18.4 92
TWO OCEAN PLATEAU 9240 28.2 26.2 108 24.6 26.9 91
WHITE MILL 8700 22.5 22.3 101 21.6 23.4 92
WOLVERINE 7650 6.4 9.6 67 10.0 12.1 83
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Basin wide percent 91 92
WIND RIVER
BURROUGHS CREEK 8750 10.6 13.0 82 9.5 15.7 61
CASTLE CREEK 8400 3.2 -M * 7.5 -M *
COLD SPRINGS 9630 5.2 6.6 79 8.1 9.9 82
DEER PARK 9700 11.7 15.8 74 13.5 19.9 68
HOBBS PARK 10100 10.6 14.2 75 9.9 13.5 73
KIRWIN 9550 -M 9.6 * -M 11.5 *
LITTLE WARM 9370 9.1 10.3 88 10.9 12.8 85
OWL CREEK 8975 4.5 5.8 78 5.4 6.0 90
SOUTH PASS 9040 10.2 15.3 67 9.5 17.3 55
ST. LAWRENCE ALT 8620 .9 6.9 13 6.7 9.0 74
TOGWOTEE PASS 9580 19.9 22.2 90 21.0 24.1 87
TOWNSEND CREEK 8700 5.5 9.7 57 8.2 12.0 68
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Basin wide percent 74 73
BIGHORN BASIN
BALD MTN. 9380 14.1 19.2 73 9.8 16.8 58
BEAR TRAP MEADOW 8200 7.3 4.9 149 8.9 8.6 103
BONE SPRINGS DIV 9350 13.6 16.9 80 11.4 15.5 74
GRAVE SPRINGS 8550 7.0 9.5 74 7.7 10.7 72
KIRWIN 9550 -M 9.6 * -M 11.5 *
MARQUETTE 8760 5.8 -M * 8.1 -M *
MIDDLE POWDER 7760 10.4 12.1 86 12.9 11.7 110
OWL CREEK 8975 4.5 5.8 78 5.4 6.0 90
POWDER RIVER PASS 9480 10.9 10.2 107 12.8 12.6 102
SHELL CREEK 9580 13.7 15.2 90 12.2 13.7 89
TIMBER CREEK 7950 2.9 5.0 58 6.5 7.3 89
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Basin wide percent 85 85
SHOSHONE RIVER
BLACKWATER 9780 21.6 22.7 95 21.4 20.3 105
EVENING STAR 9200 23.5 23.8 99 26.7 27.1 99
MARQUETTE 8760 5.8 -M * 8.1 -M *
SYLVAN ROAD 7120 5.9 10.7 55 16.0 16.5 97
YOUNTS PEAK 8350 12.0 14.4 83 11.4 15.6 73
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Basin wide percent 88 95
POWDER RIVER
BEAR TRAP MEADOW 8200 7.3 4.9 149 8.9 8.6 103
CLOUD PEAK RESERVOIR 9860 11.8 14.9 79 11.3 13.4 84
GRAVE SPRINGS 8550 7.0 9.5 74 7.7 10.7 72
HANSEN SAWMILL 8360 5.5 6.1 90 7.5 8.6 87
MIDDLE POWDER 7760 10.4 12.1 86 12.9 11.7 110
POWDER RIVER PASS 9480 10.9 10.2 107 12.8 12.6 102
SOLDIER PARK 8720 4.0 -M * 7.3 -M *
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Basin wide percent 92 93
TONGUE RIVER
BIG GOOSE 7990 6.8 9.7 70 8.4 11.5 73
BONE SPRINGS DIV 9350 13.6 16.9 80 11.4 15.5 74
BURGESS JUNCTION 7880 9.9 12.0 82 9.6 12.3 78
DOME LAKE 8880 8.7 11.8 74 9.0 13.6 66
LITTLE GOOSE 8870 7.6 -M * 11.2 -M *
SUCKER CREEK 8880 11.2 12.3 91 12.0 14.4 83
TIE CREEK 6870 3.7 5.6 66 9.7 11.7 83
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Basin wide percent 79 76
BELLE FOURCHE
COLE CANYON 5910 2.6 4.9 53 6.9 9.6 72
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Basin wide percent 53 72
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.2 6.9 61 11.0 11.9 92
NORTH RAPID CREEK 6130 4.5 6.4 70 8.7 10.0 87
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Basin wide percent 65 90
UPPER N. PLATTE
ARAPAHO RIDGE 10960 18.9 21.0 90 18.9 22.6 84
BLACKHALL MTN 9820 24.0 -M * 24.8 -M *
COLUMBINE 9160 19.9 23.4 85 22.0 25.5 86
DIVIDE PEAK 8880 12.1 20.0 60 16.8 21.4 79
JOE WRIGHT 10120 15.8 21.4 74 23.6 25.8 91
LAPRELE CREEK 8375 4.5 9.4 48 7.4 12.5 59
MED BOW 10500 15.8 -M * 28.2 -M *
NORTH FRENCH CREEK 10130 22.0 29.7 74 21.5 26.7 81
NEVER SUMMER 10280 15.4 20.4 75 11.8 -M *
OLD BATTLE 10000 24.4 31.5 77 26.3 34.9 75
RAWAH 9020 9.8 10.6 92 13.8 -M *
SAGE CREEK BASIN 7850 -M 11.6 * 10.0 14.6 68
SAND LAKE 10050 21.7 29.1 75 21.6 24.8 87
SOUTH BRUSH CREEK 8440 7.1 11.8 60 10.9 15.2 72
TOWER 10500 33.3 46.0 72 27.0 39.8 68
WEBBER SPRINGS 9250 18.1 23.1 78 20.1 26.7 75
WILLOW CREEK PASS 9540 12.7 12.2 104 13.3 13.4 99
ZIRKEL 9340 20.8 26.2 79 25.6 -M *
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Basin wide percent 76 79
SWEETWATER
DEER PARK 9700 11.7 15.8 74 13.5 19.9 68
LARSEN CREEK 9000 4.1 -M * 10.7 -M *
SOUTH PASS 9040 10.2 15.3 67 9.5 17.3 55
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Basin wide percent 70 62
LOWER N. PLATTE
CASPER MTN. 7900 9.0 14.4 62 8.3 15.1 55
LAPRELE CREEK 8375 4.5 9.4 48 7.4 12.5 59
RENO HILL 8400 9.6 14.0 69 11.3 15.6 72
WINDY PEAK 7900 3.3 7.7 43 6.5 10.6 61
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Basin wide percent 58 62
LARAMIE RIVER
BROOKLYN LAKE 10240 16.6 22.0 75 16.0 21.1 76
CINNABAR PARK 9574 14.2 21.3 67 17.0 24.1 71
CROW CREEK 8330 3.3 6.9 48 7.5 10.9 69
DEADMAN HILL 10220 14.1 16.2 87 13.7 17.3 79
RAWAH 9020 9.8 10.6 92 13.8 -M *
ROACH 9700 12.4 16.6 75 14.3 19.1 75
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Basin wide percent 75 74
S. PLATTE
BLACK MOUNTAIN 8920 8.4 -M * 10.2 -M *
CROW CREEK 8330 3.3 6.9 48 7.5 10.9 69
DEADMAN HILL 10220 14.1 16.2 87 13.7 17.3 79
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Basin wide percent 75 75
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 4.7 9.3 51 10.4 15.0 69
DIVIDE PEAK 8880 12.1 20.0 60 16.8 21.4 79
ELK RIVER 8700 -M 19.1 * -M 20.0 *
LITTLE SNAKE RIVER 8915 17.6 25.5 69 23.9 29.9 80
OLD BATTLE 10000 24.4 31.5 77 26.3 34.9 75
SAGE CREEK BASIN 7850 -M 11.6 * 10.0 14.6 68
SANDSTONE RS 8150 6.9 12.8 54 11.4 18.3 62
WHISKEY PARK 8950 21.1 27.5 77 23.9 27.9 86
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Basin wide percent 69 76
UPPER GREEN RIVER
BIG SANDY OPENING 9080 10.3 12.7 81 10.4 13.2 79
BLIND BULL SUM 8650 19.7 23.3 85 14.0 19.3 73
EAST RIM DIVIDE 7930 7.6 10.2 75 8.3 11.7 71
ELKHART PARK G.S. 9400 9.4 12.3 76 9.7 13.2 73
GROS VENTRE SUMMIT 8750 10.2 12.9 79 10.7 12.8 84
GUNSIGHT PASS 9820 10.9 13.9 78 11.6 13.8 84
KENDALL R.S. 7740 7.1 11.4 62 10.5 14.1 74
LOOMIS PARK 8240 9.9 13.8 72 12.9 17.2 75
NEW FORK LAKE 8340 6.4 10.3 62 -M 10.7 *
POCKET CREEK 9360 7.7 -M * 9.9 -M *
SNIDER BASIN 8060 6.8 12.3 55 12.3 14.1 87
SPRING CREEK DIVIDE 9000 21.9 22.5 97 21.3 23.6 90
TRIPLE PEAK 8500 18.9 21.8 87 22.0 25.1 88
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Basin wide percent 78 81
LOWER GREEN RIVER
BLACKS FORK JCT 8870 7.3 -M * 10.2 -M *
BUCK PASTURE 9700 12.6 -M * 14.8 -M *
EF BLACKS FORK GS 9308 13.1 -M * 9.9 -M *
HAMS FORK 7840 6.0 10.5 57 8.5 11.3 75
HEWINTA 9519 10.6 10.9 97 12.6 14.0 90
HICKERSON PARK 9145 6.4 7.9 81 9.3 10.2 91
HOLE-IN-ROCK 9150 8.6 7.0 123 10.3 9.7 106
INDIAN CREEK 9425 18.5 24.7 75 17.1 22.4 76
KELLEY R.S. 8180 11.5 14.6 79 13.5 18.0 75
SPIRIT LK 10223 10.5 -M * 14.6 -M *
STEEL CREEK PARK 10200 13.3 15.8 84 15.0 16.5 91
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Basin wide percent 82 85
UPPER BEAR RIVER
BEAR RIVER RS 8500 7.1 -M * 11.4 -M *
BUG LAKE 7950 11.2 18.5 61 15.2 19.3 79
BURTS MILLER RANCH 8000 4.6 -M * 7.8 -M *
CHALK CREEK #1 8993 18.1 24.4 74 20.8 25.1 83
HAYDEN FORK 9212 10.5 15.3 69 16.3 21.1 77
KELLEY R.S. 8180 11.5 14.6 79 13.5 18.0 75
LILY LAKE 9156 11.7 12.7 92 12.7 17.1 74
MONTE CRISTO 8960 17.9 27.8 64 21.3 25.9 82
SALT RIVER SUMMIT 7760 8.7 12.7 69 14.1 16.5 85
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Basin wide percent 71 80
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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.
