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: MARCH 22 , 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 15.1 14.7 103 18.6 19.2 97
BLACK BEAR 8170 33.8 32.9 103 32.2 34.8 93
BLIND BULL SUM 8650 17.3 20.7 84 12.8 17.8 72
COTTONWOOD CREEK 7670 16.9 20.2 84 21.5 22.2 97
EAST RIM DIVIDE 7930 8.9 9.6 93 7.5 10.6 71
GRAND TARGHEE 9260 33.8 33.2 102 25.6 27.2 94
GRANITE CREEK 6770 11.6 14.8 78 13.4 18.2 74
GRASSY LAKE 7265 26.4 29.6 89 29.4 32.9 89
GROS VENTRE SUMMIT 8750 9.3 11.8 79 9.8 11.5 85
GUNSIGHT PASS 9820 10.1 12.2 83 10.4 12.2 85
LEWIS LAKE DIVIDE 7850 26.8 28.0 96 29.5 32.4 91
PHILLIPS BENCH 8200 20.3 22.6 90 21.5 25.5 84
SALT RIVER SUMMIT 7760 9.4 12.1 78 13.0 15.1 86
SNAKE RIVER STATION 6920 14.6 15.4 95 20.0 20.6 97
SPRING CREEK DIVIDE 9000 19.6 21.5 91 19.5 21.6 90
THUMB DIVIDE 7980 14.9 14.3 104 15.7 16.6 95
TOGWOTEE PASS 9580 18.6 20.8 89 19.4 21.9 89
TWO OCEAN PLATEAU 9240 25.5 24.2 105 22.4 24.7 91
WILLOW CREEK 8380 23.6 25.3 93 27.8 30.2 92
YOUNTS PEAK 8350 11.6 13.6 85 10.6 14.3 74
----- -----
Basin wide percent 93 89
MADISON-GALLATIN
BLACK BEAR 8170 33.8 32.9 103 32.2 34.8 93
CANYON 7870 10.4 11.8 88 11.5 14.7 78
MADISON PLATEAU 7750 19.9 20.2 99 22.9 23.8 96
WEST YELLOWSTONE 6700 8.6 10.0 86 12.6 12.8 98
WHISKEY CREEK 6800 10.4 14.3 73 17.0 18.3 93
----- -----
Basin wide percent 93 92
YELLOWSTONE
BEARTOOTH LAKE 9360 15.7 19.7 80 15.9 17.9 89
BURNT MTN 5880 3.3 4.7 70 8.2 11.0 75
CANYON 7870 10.4 11.8 88 11.5 14.7 78
COLE CREEK 7850 8.9 12.2 73 7.0 10.9 64
EVENING STAR 9200 22.5 22.5 100 25.0 24.7 101
FISHER CREEK 9100 29.0 28.3 102 28.1 28.8 98
NORTHEAST ENTRANCE 7350 6.8 9.2 74 10.4 11.0 95
PARKER PEAK 9400 19.1 17.8 107 18.7 15.8 118
SYLVAN LAKE 8420 15.9 18.3 87 20.6 20.1 102
THUMB DIVIDE 7980 14.9 14.3 104 15.7 16.6 95
TWO OCEAN PLATEAU 9240 25.5 24.2 105 22.4 24.7 91
WHITE MILL 8700 20.2 20.2 100 19.4 21.4 91
WOLVERINE 7650 7.9 8.9 89 9.2 11.1 83
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Basin wide percent 94 93
WIND RIVER
BURROUGHS CREEK 8750 9.7 12.4 78 8.7 14.4 60
CASTLE CREEK 8400 5.2 -M * 6.9 -M *
COLD SPRINGS 9630 5.7 6.5 88 7.6 8.6 88
DEER PARK 9700 10.5 13.7 77 12.0 17.4 69
HOBBS PARK 10100 9.8 12.1 81 8.8 11.3 78
KIRWIN 9550 -M 8.5 * -M 10.1 *
LITTLE WARM 9370 8.6 9.4 91 9.9 11.3 88
OWL CREEK 8975 4.7 4.6 102 4.7 5.1 92
SOUTH PASS 9040 9.0 14.2 63 7.9 15.5 51
ST. LAWRENCE ALT 8620 3.7 6.3 59 6.1 7.6 80
TOGWOTEE PASS 9580 18.6 20.8 89 19.4 21.9 89
TOWNSEND CREEK 8700 4.5 8.4 54 6.6 10.2 65
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Basin wide percent 78 74
BIGHORN BASIN
BALD MTN. 9380 13.3 16.6 80 9.1 15.0 61
BEAR TRAP MEADOW 8200 7.4 5.2 142 7.7 7.2 107
BONE SPRINGS DIV 9350 12.7 14.2 89 10.1 13.6 74
GRAVE SPRINGS 8550 6.6 8.3 80 7.4 9.1 81
KIRWIN 9550 -M 8.5 * -M 10.1 *
MARQUETTE 8760 5.2 -M * 7.3 -M *
MIDDLE POWDER 7760 10.1 10.1 100 12.0 10.2 118
OWL CREEK 8975 4.7 4.6 102 4.7 5.1 92
POWDER RIVER PASS 9480 10.3 9.3 111 11.3 11.0 103
SHELL CREEK 9580 12.2 13.0 94 10.9 12.0 91
TIMBER CREEK 7950 3.2 4.1 78 5.8 6.2 94
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Basin wide percent 94 88
SHOSHONE RIVER
BLACKWATER 9780 19.8 21.0 94 19.6 18.3 107
EVENING STAR 9200 22.5 22.5 100 25.0 24.7 101
MARQUETTE 8760 5.2 -M * 7.3 -M *
SYLVAN ROAD 7120 8.5 10.5 81 14.4 15.3 94
YOUNTS PEAK 8350 11.6 13.6 85 10.6 14.3 74
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Basin wide percent 92 96
POWDER RIVER
BEAR TRAP MEADOW 8200 7.4 5.2 142 7.7 7.2 107
CLOUD PEAK RESERVOIR 9860 10.6 13.1 81 9.9 11.4 87
GRAVE SPRINGS 8550 6.6 8.3 80 7.4 9.1 81
HANSEN SAWMILL 8360 5.2 5.8 90 6.7 7.3 92
MIDDLE POWDER 7760 10.1 10.1 100 12.0 10.2 118
POWDER RIVER PASS 9480 10.3 9.3 111 11.3 11.0 103
SOLDIER PARK 8720 3.9 -M * 6.6 -M *
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Basin wide percent 97 98
TONGUE RIVER
BIG GOOSE 7990 6.1 8.0 76 7.6 9.4 81
BONE SPRINGS DIV 9350 12.7 14.2 89 10.1 13.6 74
BURGESS JUNCTION 7880 9.3 9.7 96 8.8 10.6 83
DOME LAKE 8880 8.3 10.4 80 8.2 11.7 70
LITTLE GOOSE 8870 7.2 -M * 10.1 -M *
SUCKER CREEK 8880 10.8 11.0 98 10.9 12.4 88
TIE CREEK 6870 4.7 5.1 92 9.1 9.9 92
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Basin wide percent 89 81
BELLE FOURCHE
COLE CANYON 5910 4.0 5.6 71 6.4 8.0 80
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Basin wide percent 71 80
CHEYENNE RIVER BASIN
BLIND PARK 6890 6.2 7.2 86 9.8 10.6 92
NORTH RAPID CREEK 6130 6.0 6.6 91 7.5 8.7 86
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Basin wide percent 88 90
UPPER N. PLATTE
ARAPAHO RIDGE 10960 16.9 18.1 93 16.8 19.8 85
BLACKHALL MTN 9820 21.9 -M * 23.2 -M *
COLUMBINE 9160 19.6 22.1 89 19.3 23.2 83
DIVIDE PEAK 8880 13.6 17.9 76 15.3 19.3 79
JOE WRIGHT 10120 13.3 19.3 69 21.0 23.1 91
LAPRELE CREEK 8375 5.2 9.3 56 7.1 10.9 65
MED BOW 10500 16.6 -M * 26.0 -M *
NORTH FRENCH CREEK 10130 20.1 25.8 78 19.8 23.9 83
NEVER SUMMER 10280 13.5 18.0 75 10.5 -M *
OLD BATTLE 10000 22.4 26.8 84 24.6 31.8 77
RAWAH 9020 9.8 9.7 101 12.2 -M *
SAGE CREEK BASIN 7850 11.6 11.5 101 9.3 13.0 72
SAND LAKE 10050 20.1 25.1 80 19.8 21.9 90
SOUTH BRUSH CREEK 8440 8.9 11.2 79 10.0 13.5 74
TOWER 10500 30.5 40.5 75 26.9 36.1 75
WEBBER SPRINGS 9250 17.7 21.3 83 18.9 24.1 78
WILLOW CREEK PASS 9540 11.2 11.0 102 11.9 11.8 101
ZIRKEL 9340 20.7 25.6 81 23.2 -M *
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Basin wide percent 81 81
SWEETWATER
DEER PARK 9700 10.5 13.7 77 12.0 17.4 69
LARSEN CREEK 9000 7.4 -M * 9.7 -M *
SOUTH PASS 9040 9.0 14.2 63 7.9 15.5 51
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Basin wide percent 70 60
LOWER N. PLATTE
CASPER MTN. 7900 8.9 12.5 71 7.6 12.9 59
LAPRELE CREEK 8375 5.2 9.3 56 7.1 10.9 65
RENO HILL 8400 9.3 12.2 76 10.6 13.2 80
WINDY PEAK 7900 3.9 7.3 53 6.3 9.2 68
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Basin wide percent 66 68
LARAMIE RIVER
BROOKLYN LAKE 10240 15.2 17.9 85 14.4 18.7 77
CINNABAR PARK 9574 13.2 18.4 72 15.2 21.5 71
CROW CREEK 8330 4.9 6.9 71 6.8 9.1 75
DEADMAN HILL 10220 12.4 14.1 88 12.1 15.2 80
RAWAH 9020 9.8 9.7 101 12.2 -M *
ROACH 9700 11.2 14.2 79 12.7 17.1 74
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Basin wide percent 82 75
S. PLATTE
BLACK MOUNTAIN 8920 7.5 -M * 8.8 -M *
CROW CREEK 8330 4.9 6.9 71 6.8 9.1 75
DEADMAN HILL 10220 12.4 14.1 88 12.1 15.2 80
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Basin wide percent 82 78
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 7.1 11.3 63 9.3 13.7 68
DIVIDE PEAK 8880 13.6 17.9 76 15.3 19.3 79
ELK RIVER 8700 13.4 17.4 77 13.3 18.1 73
LITTLE SNAKE RIVER 8915 18.8 21.3 88 22.7 26.7 85
OLD BATTLE 10000 22.4 26.8 84 24.6 31.8 77
SAGE CREEK BASIN 7850 11.6 11.5 101 9.3 13.0 72
SANDSTONE RS 8150 8.8 12.6 70 10.8 16.8 64
WHISKEY PARK 8950 21.4 24.5 87 22.4 25.2 89
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Basin wide percent 82 78
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.1 11.8 77 9.2 11.9 77
BLIND BULL SUM 8650 17.3 20.7 84 12.8 17.8 72
EAST RIM DIVIDE 7930 8.9 9.6 93 7.5 10.6 71
ELKHART PARK G.S. 9400 8.6 10.9 79 8.9 11.9 75
GROS VENTRE SUMMIT 8750 9.3 11.8 79 9.8 11.5 85
GUNSIGHT PASS 9820 10.1 12.2 83 10.4 12.2 85
KENDALL R.S. 7740 8.8 11.4 77 9.9 13.0 76
LOOMIS PARK 8240 10.2 13.6 75 11.7 15.7 75
NEW FORK LAKE 8340 7.2 9.4 77 6.0 9.8 61
POCKET CREEK 9360 7.1 -M * 8.9 -M *
SNIDER BASIN 8060 9.2 11.1 83 11.3 12.9 88
SPRING CREEK DIVIDE 9000 19.6 21.5 91 19.5 21.6 90
TRIPLE PEAK 8500 17.5 19.8 88 20.0 23.0 87
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Basin wide percent 83 80
LOWER GREEN RIVER
BLACKS FORK JCT 8870 6.1 -M * 8.1 -M *
BUCK PASTURE 9700 11.0 -M * 13.2 -M *
EF BLACKS FORK GS 9308 11.4 -M * 7.9 -M *
HAMS FORK 7840 8.4 10.4 81 7.6 10.3 74
HEWINTA 9519 9.3 9.9 94 10.4 12.5 83
HICKERSON PARK 9145 6.6 6.7 99 7.6 9.0 84
HOLE-IN-ROCK 9150 7.7 6.8 113 8.4 8.4 100
INDIAN CREEK 9425 17.3 21.6 80 15.1 20.4 74
KELLEY R.S. 8180 10.8 13.7 79 11.9 16.4 73
SPIRIT LK 10223 9.2 -M * 12.9 -M *
STEEL CREEK PARK 10200 10.9 13.6 80 12.7 14.5 88
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Basin wide percent 86 81
UPPER BEAR RIVER
BEAR RIVER RS 8500 7.4 -M * 9.4 -M *
BUG LAKE 7950 12.9 16.9 76 14.3 17.6 81
BURTS MILLER RANCH 8000 6.2 -M * 6.7 -M *
CHALK CREEK #1 8993 16.1 21.6 75 18.4 22.4 82
HAYDEN FORK 9212 9.9 14.4 69 14.0 18.8 74
KELLEY R.S. 8180 10.8 13.7 79 11.9 16.4 73
LILY LAKE 9156 9.7 11.5 84 10.6 15.2 70
MONTE CRISTO 8960 17.3 24.7 70 19.6 23.4 84
SALT RIVER SUMMIT 7760 9.4 12.1 78 13.0 15.1 86
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Basin wide percent 75 79
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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.
