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 30 , 2012
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 18.7 18.1 103 23.7 21.5 110
BLACK BEAR 8170 40.0 39.5 101 40.0 40.5 99
BLIND BULL SUM 8650 22.7 28.1 81 17.2 22.3 77
COTTONWOOD CREEK 7670 18.7 24.0 78 24.4 27.5 89
EAST RIM DIVIDE 7930 10.1 13.2 77 11.5 12.1 95
GRAND TARGHEE 9260 36.8 -M * 29.4 -M *
GRANITE CREEK 6770 14.3 18.7 76 16.5 20.0 82
GRASSY LAKE 7265 33.2 35.8 93 37.7 36.1 104
GROS VENTRE SUMMIT 8750 9.3 14.2 65 10.5 12.9 81
GUNSIGHT PASS 9820 12.6 -M * 14.1 -M *
LEWIS LAKE DIVIDE 7850 32.6 35.6 92 34.1 36.9 92
PHILLIPS BENCH 8200 24.3 29.0 84 25.4 29.1 87
SALT RIVER SUMMIT 7760 10.2 14.5 70 11.6 18.8 62
SNAKE RIVER STATION 6920 16.7 19.2 87 24.7 22.3 111
SPRING CREEK DIVIDE 9000 22.8 26.7 85 22.4 26.5 85
THUMB DIVIDE 7980 17.1 19.1 90 18.2 18.9 96
TOGWOTEE PASS 9580 21.7 24.9 87 23.8 24.6 97
TWO OCEAN PLATEAU 9240 32.3 28.1 115 27.4 27.7 99
WILLOW CREEK 8380 25.0 30.4 82 31.6 32.2 98
YOUNTS PEAK 8350 16.0 17.2 93 15.5 16.1 96
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Basin wide percent of average 88 93
MADISON-GALLATIN
BLACK BEAR 8170 40.0 39.5 101 40.0 40.5 99
CANYON 7870 12.4 13.8 90 14.6 15.4 95
MADISON PLATEAU 7750 25.2 25.3 100 29.5 26.8 110
WEST YELLOWSTONE 6700 10.4 12.8 81 16.7 13.1 127
WHISKEY CREEK 6800 16.2 17.3 94 21.7 21.0 103
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Basin wide percent of average 96 105
YELLOWSTONE
BEARTOOTH LAKE 9360 24.3 23.4 104 23.5 20.1 117
BURNT MTN 5880 .0 6.1 0 11.3 15.1 75
CANYON 7870 12.4 13.8 90 14.6 15.4 95
COLE CREEK 7850 14.1 16.0 88 11.3 16.4 69
EVENING STAR 9200 28.7 29.8 96 31.1 25.2 123
FISHER CREEK 9100 35.0 35.1 100 33.3 36.4 91
NORTHEAST ENTRANCE 7350 8.6 11.3 76 12.7 12.7 100
PARKER PEAK 9400 23.4 21.7 108 22.8 16.2 141
SYLVAN LAKE 8420 18.4 22.6 81 24.4 20.9 117
THUMB DIVIDE 7980 17.1 19.1 90 18.2 18.9 96
TWO OCEAN PLATEAU 9240 32.3 28.1 115 27.4 27.7 99
WHITE MILL 8700 22.3 24.4 91 23.1 27.0 86
WOLVERINE 7650 10.0 11.5 87 13.0 12.8 102
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Basin wide percent of average 94 101
WIND RIVER
BURROUGHS CREEK 8750 13.8 14.7 94 14.4 16.2 89
CASTLE CREEK 8400 6.4 -M * 8.7 -M *
COLD SPRINGS 9630 6.4 8.9 72 9.4 10.5 90
DEER PARK 9700 10.9 16.9 64 17.2 21.8 79
HOBBS PARK 10100 13.9 14.8 94 13.0 12.7 102
KIRWIN 9550 12.2 11.3 108 14.0 11.1 126
LITTLE WARM 9370 8.5 11.9 71 11.3 13.3 85
OWL CREEK 8975 2.8 5.5 51 5.6 5.8 97
SOUTH PASS 9040 13.3 16.7 80 13.2 18.3 72
ST. LAWRENCE ALT 8620 .8 7.3 11 7.4 8.7 85
TOGWOTEE PASS 9580 21.7 24.9 87 23.8 24.6 97
TOWNSEND CREEK 8700 7.2 8.7 83 11.1 11.5 97
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Basin wide percent of average 79 91
BIGHORN BASIN
BALD MTN. 9380 20.6 19.6 105 15.4 17.2 90
BEAR TRAP MEADOW 8200 6.0 5.2 115 8.8 8.1 109
BONE SPRINGS DIV 9350 18.9 16.2 117 15.4 14.5 106
GRAVE SPRINGS 8550 7.9 9.4 84 10.2 9.6 106
KIRWIN 9550 12.2 11.3 108 14.0 11.1 126
MARQUETTE 8760 8.4 -M * 11.6 9.6 121
MIDDLE POWDER 7760 10.1 11.7 86 10.6 12.2 87
OWL CREEK 8975 2.8 5.5 51 5.6 5.8 97
POWDER RIVER PASS 9480 11.0 10.8 102 15.0 12.2 123
SHELL CREEK 9580 18.0 14.7 122 15.7 13.2 119
TIMBER CREEK 7950 1.6 5.8 28 8.7 7.2 121
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Basin wide percent of average 99 109
SHOSHONE RIVER
BLACKWATER 9780 24.2 24.6 98 23.9 20.5 117
EVENING STAR 9200 28.7 29.8 96 31.1 25.2 123
MARQUETTE 8760 8.4 -M * 11.6 9.6 121
SYLVAN ROAD 7120 10.2 13.0 78 17.7 17.7 100
YOUNTS PEAK 8350 16.0 17.2 93 15.5 16.1 96
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Basin wide percent of average 93 112
POWDER RIVER
BEAR TRAP MEADOW 8200 6.0 5.2 115 8.8 8.1 109
CLOUD PEAK RESERVOIR 9860 14.7 13.1 112 15.0 12.6 119
GRAVE SPRINGS 8550 7.9 9.4 84 10.2 9.6 106
HANSEN SAWMILL 8360 2.7 6.3 43 8.4 8.1 104
MIDDLE POWDER 7760 10.1 11.7 86 10.6 12.2 87
POWDER RIVER PASS 9480 11.0 10.8 102 15.0 12.2 123
SOLDIER PARK 8720 10.4 -M * 9.8 -M *
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Basin wide percent of average 93 108
TONGUE RIVER
BIG GOOSE 7990 8.6 10.4 83 13.5 8.4 161
BONE SPRINGS DIV 9350 18.9 16.2 117 15.4 14.5 106
BURGESS JUNCTION 7880 11.4 11.6 98 14.0 12.0 117
DOME LAKE 8880 13.3 12.2 109 14.3 13.0 110
LITTLE GOOSE 8870 8.6 -M * 15.6 -M *
SUCKER CREEK 8880 12.2 11.6 105 14.7 13.4 110
TIE CREEK 6870 .0 5.7 0 13.4 9.7 138
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Basin wide percent of average 95 120
BELLE FOURCHE
COLE CANYON 5910 1.1 6.8 16 8.1 6.6 123
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Basin wide percent of average 16 123
CHEYENNE RIVER BASIN
BLIND PARK 6890 .0 8.7 0 10.3 11.0 94
NORTH RAPID CREEK 6130 1.3 8.2 16 8.0 8.5 94
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Basin wide percent of average 8 94
UPPER N. PLATTE
ARAPAHO RIDGE 10960 15.1 22.6 67 16.6 26.6 62
BLACKHALL MTN 9820 21.2 -M * 23.1 -M *
COLUMBINE 9160 13.3 25.0 53 19.5 25.1 78
DIVIDE PEAK 8880 11.5 19.8 58 18.6 20.6 90
JOE WRIGHT 10120 12.1 21.2 57 18.4 24.6 75
LAPRELE CREEK 8375 7.3 10.9 67 11.5 12.5 92
NORTH FRENCH CREEK 10130 18.1 29.0 62 19.2 24.5 78
NEVER SUMMER 10280 11.3 20.1 56 10.9 23.3 47
OLD BATTLE 10000 22.5 32.1 70 26.8 34.4 78
RAWAH 9020 4.2 14.9 28 10.9 16.2 67
SAGE CREEK BASIN 7850 5.4 11.5 47 10.2 12.0 85
SAND LAKE 10050 22.6 32.3 70 22.7 23.9 95
SOUTH BRUSH CREEK 8440 3.9 13.0 30 11.7 16.2 72
TOWER 10500 28.5 45.3 63 30.6 38.2 80
WEBBER SPRINGS 9250 14.9 26.3 57 20.9 26.5 79
WILLOW CREEK PASS 9540 -M 11.9 * 9.2 12.7 72
ZIRKEL 9340 18.7 25.8 72 24.2 25.8 94
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Basin wide percent of average 60 78
SWEETWATER
DEER PARK 9700 10.9 16.9 64 17.2 21.8 79
LARSEN CREEK 9000 10.6 -M * 13.8 -M *
SOUTH PASS 9040 13.3 16.7 80 13.2 18.3 72
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Basin wide percent of average 72 76
LOWER N. PLATTE
CASPER MTN. 7900 16.7 14.3 117 17.5 14.2 123
LAPRELE CREEK 8375 7.3 10.9 67 11.5 12.5 92
RENO HILL 8400 14.3 14.0 102 17.1 14.7 116
WINDY PEAK 7900 5.5 8.0 69 8.6 10.4 83
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Basin wide percent of average 93 106
LARAMIE RIVER
BROOKLYN LAKE 10240 15.9 23.5 68 18.6 21.8 85
CINNABAR PARK 9574 13.5 17.8 76 19.2 19.9 96
CROW CREEK 8330 4.3 8.9 48 10.1 9.8 103
DEADMAN HILL 10220 15.8 16.2 98 14.9 16.7 89
RAWAH 9020 4.2 14.9 28 10.9 16.2 67
ROACH 9700 12.1 16.9 72 15.8 18.5 85
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Basin wide percent of average 67 87
S. PLATTE
BLACK MOUNTAIN 8920 9.4 -M * 12.2 -M *
CROW CREEK 8330 4.3 8.9 48 10.1 9.8 103
DEADMAN HILL 10220 15.8 16.2 98 14.9 16.7 89
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Basin wide percent of average 80 94
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.2 11.2 46 11.8 15.7 75
DIVIDE PEAK 8880 11.5 19.8 58 18.6 20.6 90
ELK RIVER 8700 9.3 19.4 48 15.4 19.5 79
LITTLE SNAKE RIVER 8915 15.0 -M * 23.9 -M *
OLD BATTLE 10000 22.5 32.1 70 26.8 34.4 78
SAGE CREEK BASIN 7850 5.4 11.5 47 10.2 12.0 85
SANDSTONE RS 8150 6.3 14.9 42 11.9 18.6 64
WHISKEY PARK 8950 17.7 30.2 59 23.7 28.5 83
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Basin wide percent of average 56 79
UPPER GREEN RIVER
BIG SANDY OPENING 9080 13.7 14.5 94 13.6 13.3 102
BLIND BULL SUM 8650 22.7 28.1 81 17.2 22.3 77
EAST RIM DIVIDE 7930 10.1 13.2 77 11.5 12.1 95
ELKHART PARK G.S. 9400 13.8 13.4 103 15.0 13.3 113
GROS VENTRE SUMMIT 8750 9.3 14.2 65 10.5 12.9 81
GUNSIGHT PASS 9820 12.6 -M * 14.1 -M *
KENDALL R.S. 7740 13.4 14.6 92 15.0 14.6 103
LOOMIS PARK 8240 13.2 17.4 76 16.5 17.4 95
NEW FORK LAKE 8340 10.7 11.2 96 10.6 11.3 94
POCKET CREEK 9360 10.3 -M * 12.3 -M *
SNIDER BASIN 8060 12.2 14.6 84 13.0 16.1 81
SPRING CREEK DIVIDE 9000 22.8 26.7 85 22.4 26.5 85
TRIPLE PEAK 8500 21.3 25.0 85 24.9 24.8 100
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Basin wide percent of average 85 92
LOWER GREEN RIVER
BLACKS FORK JCT 8870 3.6 -M * 10.7 -M *
BUCK PASTURE 9700 .1 -M * 4.0 -M *
EF BLACKS FORK GS 9308 6.7 -M * 9.2 -M *
HAMS FORK 7840 8.3 12.1 69 9.7 12.2 80
HEWINTA 9519 7.7 11.9 65 12.5 14.5 86
HICKERSON PARK 9145 6.0 7.5 80 12.1 7.8 155
HOLE-IN-ROCK 9150 6.5 7.1 92 12.0 7.4 162
INDIAN CREEK 9425 20.2 27.9 72 17.8 25.4 70
KELLEY R.S. 8180 13.0 17.0 76 15.2 20.3 75
SPIRIT LK 10223 11.1 -M * 17.5 -M *
STEEL CREEK PARK 10200 10.1 15.7 64 14.4 16.1 89
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Basin wide percent of average 72 90
UPPER BEAR RIVER
BEAR RIVER RS 8500 2.8 -M * 10.1 -M *
BUG LAKE 7950 14.8 21.0 70 15.7 19.2 82
BURTS MILLER RANCH 8000 2.3 -M * 9.9 -M *
CHALK CREEK #1 8993 15.2 24.7 62 18.6 25.1 74
HAYDEN FORK 9212 8.6 16.4 52 17.5 20.9 84
KELLEY R.S. 8180 13.0 17.0 76 15.2 20.3 75
LILY LAKE 9156 8.7 13.1 66 12.1 17.4 70
MONTE CRISTO 8960 17.5 29.9 59 18.7 25.5 73
SALT RIVER SUMMIT 7760 10.2 14.5 70 11.6 18.8 62
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Basin wide percent of average 64 74
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Average Snow Water Equivalent and
Total Precipitation values
If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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 average conditions is 1971-2000.
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.