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 5 , 2010
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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 9.6 18.1 53 12.3 21.9 56
COTTONWOOD CREEK 7670 15.7 24.3 65 20.0 28.2 71
GRAND TARGHEE 9260 36.6 -M * 27.4 -M *
GRANITE CREEK 6770 9.4 18.5 51 11.6 20.3 57
GRASSY LAKE 7265 -M 36.6 * -M 36.9 *
GROS VENTRE SUMMIT 8750 7.9 14.5 54 7.6 13.3 57
GUNSIGHT PASS 9820 8.0 -M * 9.2 -M *
LEWIS LAKE DIVIDE 7850 18.5 36.2 51 20.3 37.7 54
PHILLIPS BENCH 8200 17.5 29.6 59 18.8 29.8 63
SALT RIVER SUMMIT 7760 10.0 14.8 68 11.6 19.3 60
SNAKE RIVER STATION 6920 7.5 19.1 39 15.8 22.8 69
SPRING CREEK DIVIDE 9000 17.4 27.3 64 16.6 27.1 61
THUMB DIVIDE 7980 10.0 19.3 52 12.4 19.4 64
TOGWOTEE PASS 9580 18.1 25.5 71 18.0 25.3 71
TWO OCEAN PLATEAU 9240 20.5 28.9 71 16.6 28.4 58
WILLOW CREEK 8380 21.3 31.0 69 25.1 33.0 76
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Basin wide percent of average 60 63
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9360 13.8 24.0 58 12.5 20.6 61
BLACK BEAR 8170 25.2 40.1 63 24.6 41.4 59
CANYON 7870 8.7 14.0 62 10.4 15.8 66
FISHER CREEK 9100 23.4 35.8 65 22.1 37.3 59
MADISON PLATEAU 7750 15.6 25.7 61 18.9 27.5 69
NORTHEAST ENTRANCE 7350 5.8 11.3 51 8.6 13.0 66
PARKER PEAK 9400 18.2 22.2 82 12.4 16.7 74
SYLVAN LAKE 8420 13.6 23.2 59 16.5 21.5 77
THUMB DIVIDE 7980 10.0 19.3 52 12.4 19.4 64
TWO OCEAN PLATEAU 9240 20.5 28.9 71 16.6 28.4 58
WHISKEY CREEK 6800 9.7 17.6 55 12.0 21.5 56
WHITE MILL 8700 16.2 24.9 65 15.1 27.7 55
WOLVERINE 7650 7.4 11.7 63 7.2 13.1 55
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Basin wide percent of average 63 62
WIND RIVER
BURROUGHS CREEK 8750 8.8 14.9 59 6.7 16.7 40
COLD SPRINGS 9630 7.2 8.9 81 8.8 11.0 80
DEER PARK 9700 15.4 17.3 89 17.1 22.5 76
HOBBS PARK 10100 15.6 15.6 100 14.8 13.2 112
LITTLE WARM 9370 7.6 12.2 62 8.0 13.8 58
SOUTH PASS 9040 13.9 17.1 81 15.0 18.9 79
ST. LAWRENCE ALT 8620 7.8 7.5 104 9.8 9.1 108
TOGWOTEE PASS 9580 18.1 25.5 71 18.0 25.3 71
TOWNSEND CREEK 8700 11.5 9.3 124 13.5 12.0 113
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Basin wide percent of average 83 78
BIGHORN BASIN
BALD MTN. 9380 13.8 20.3 68 11.0 17.8 62
BEAR TRAP MEADOW 8200 7.3 5.2 140 8.0 8.5 94
BLACKWATER 9780 16.6 25.2 66 15.3 21.1 73
BONE SPRINGS DIV 9350 11.9 16.7 71 9.8 15.0 65
EVENING STAR 9200 19.3 30.4 63 20.3 26.0 78
GRAVE SPRINGS 8550 9.5 9.8 97 10.3 10.0 103
KIRWIN 9550 9.0 11.7 77 8.6 11.5 75
MARQUETTE 8760 7.2 9.5 76 8.0 10.1 79
MIDDLE POWDER 7760 11.1 12.3 90 8.7 12.7 69
OWL CREEK 8975 6.5 5.8 112 4.9 6.1 80
POWDER RIVER PASS 9480 9.3 11.1 84 10.6 12.7 83
SHELL CREEK 9580 11.5 15.1 76 10.3 13.7 75
SYLVAN LAKE 8420 13.6 23.2 59 16.5 21.5 77
SYLVAN ROAD 7120 7.4 12.8 58 11.8 18.0 66
TIMBER CREEK 7950 4.6 5.9 78 6.0 7.6 79
YOUNTS PEAK 8350 10.3 17.5 59 8.8 16.6 53
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Basin wide percent of average 73 74
SHOSHONE RIVER
BLACKWATER 9780 16.6 25.2 66 15.3 21.1 73
EVENING STAR 9200 19.3 30.4 63 20.3 26.0 78
KIRWIN 9550 9.0 11.7 77 8.6 11.5 75
MARQUETTE 8760 7.2 9.5 76 8.0 10.1 79
SYLVAN LAKE 8420 13.6 23.2 59 16.5 21.5 77
SYLVAN ROAD 7120 7.4 12.8 58 11.8 18.0 66
YOUNTS PEAK 8350 10.3 17.5 59 8.8 16.6 53
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Basin wide percent of average 64 72
POWDER-TONGUE
BEAR TRAP MEADOW 8200 7.3 5.2 140 8.0 8.5 94
BIG GOOSE 7990 8.7 11.1 78 9.9 8.9 111
BONE SPRINGS DIV 9350 11.9 16.7 71 9.8 15.0 65
BURGESS JUNCTION 7880 10.6 12.0 88 10.0 12.5 80
CLOUD PEAK RESERVOIR 9860 12.1 13.9 87 10.1 13.2 77
DOME LAKE 8880 8.9 12.9 69 11.0 13.5 81
GRAVE SPRINGS 8550 9.5 9.8 97 10.3 10.0 103
HANSEN SAWMILL 8360 5.7 6.5 88 6.6 8.4 79
MIDDLE POWDER 7760 11.1 12.3 90 8.7 12.7 69
POWDER RIVER PASS 9480 9.3 11.1 84 10.6 12.7 83
SUCKER CREEK 8880 12.1 12.2 99 12.5 13.9 90
TIE CREEK 6870 3.2 6.2 52 9.3 10.2 91
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Basin wide percent of average 85 84
BELLE FOURCHE
BLIND PARK 6890 6.1 8.4 73 11.7 11.3 104
COLE CANYON 5910 6.5 7.0 93 9.9 6.9 143
NORTH RAPID CREEK 6130 8.2 8.5 96 10.5 8.8 119
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Basin wide percent of average 87 119
UPPER N. PLATTE RIVER
COLUMBINE 9160 20.0 25.1 80 21.6 25.8 84
DIVIDE PEAK 8880 22.1 20.3 109 23.0 21.2 108
ELK RIVER 8700 19.2 19.9 96 19.8 20.0 99
JOE WRIGHT 10120 18.8 21.9 86 21.0 25.3 83
NORTH FRENCH CREEK 10130 36.0 30.2 119 33.8 25.2 134
OLD BATTLE 10000 33.0 32.9 100 35.0 35.3 99
SAGE CREEK BASIN 7850 16.6 11.8 141 12.0 12.3 98
SOUTH BRUSH CREEK 8440 14.5 13.3 109 18.4 16.8 110
TOWER 10500 -M 46.7 * -M 39.2 *
WEBBER SPRINGS 9250 24.0 26.4 91 27.1 27.3 99
WILLOW CREEK PASS 9540 8.5 12.5 68 10.7 13.1 82
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Basin wide percent of average 99 100
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.4 24.5 87 22.5 22.6 100
CASPER MTN. 7900 15.9 15.1 105 14.7 14.8 99
DEADMAN HILL 10220 19.7 16.9 117 17.2 17.3 99
DEER PARK 9700 15.4 17.3 89 17.1 22.5 76
LAPRELE CREEK 8375 10.5 11.0 95 13.1 12.9 102
RENO HILL 8400 17.0 14.7 116 17.8 15.4 116
ROACH 9700 17.5 17.5 100 20.5 19.0 108
SAND LAKE 10050 31.4 33.3 94 30.5 24.7 123
SOUTH PASS 9040 13.9 17.1 81 15.0 18.9 79
WINDY PEAK 7900 9.4 8.3 113 11.3 10.8 105
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Basin wide percent of average 98 100
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 10.8 10.6 102 13.4 16.2 83
DIVIDE PEAK 8880 22.1 20.3 109 23.0 21.2 108
OLD BATTLE 10000 33.0 32.9 100 35.0 35.3 99
SANDSTONE RS 8150 13.6 14.6 93 16.3 19.1 85
WHISKEY PARK 8950 27.8 30.6 91 29.2 29.3 100
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Basin wide percent of average 98 97
UPPER GREEN RIVER
BIG SANDY OPENING 9080 9.0 14.9 60 8.8 13.7 64
BLIND BULL SUM 8650 15.3 28.6 53 11.5 22.8 50
EAST RIM DIVIDE 7930 5.2 13.5 39 6.5 12.3 53
ELKHART PARK G.S. 9400 8.4 13.7 61 8.7 13.7 64
GROS VENTRE SUMMIT 8750 7.9 14.5 54 7.6 13.3 57
GUNSIGHT PASS 9820 8.0 -M * 9.2 -M *
KENDALL R.S. 7740 5.9 14.5 41 7.7 14.9 52
LOOMIS PARK 8240 7.8 17.5 45 9.6 17.8 54
NEW FORK LAKE 8340 5.6 11.4 49 5.9 11.6 51
POCKET CREEK 9360 7.8 -M * 10.7 -M *
SNIDER BASIN 8060 9.4 14.9 63 10.3 16.5 62
SPRING CREEK DIVIDE 9000 17.4 27.3 64 16.6 27.1 61
TRIPLE PEAK 8500 17.4 25.5 68 18.3 25.4 72
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Basin wide percent of average 56 59
LOWER GREEN RIVER
HAMS FORK 7840 8.2 11.7 70 9.1 12.5 73
HEWINTA 9519 10.4 12.4 84 11.8 15.0 79
HICKERSON PARK 9145 8.3 7.9 105 11.2 8.2 137
HOLE-IN-ROCK 9150 8.2 7.3 112 10.2 7.7 132
INDIAN CREEK 9425 18.3 28.7 64 15.9 26.1 61
KELLEY R.S. 8180 10.6 17.3 61 12.7 20.9 61
STEEL CREEK PARK 10200 12.9 16.2 80 14.8 16.7 89
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Basin wide percent of average 76 80
UPPER BEAR RIVER
BUG LAKE 7950 9.7 21.5 45 13.9 19.7 71
HAYDEN FORK 9212 12.6 16.8 75 16.6 21.6 77
KELLEY R.S. 8180 10.6 17.3 61 12.7 20.9 61
LILY LAKE 9156 12.1 14.0 86 13.5 18.0 75
MONTE CRISTO 8960 18.4 30.3 61 17.8 26.2 68
SALT RIVER SUMMIT 7760 10.0 14.8 68 11.6 19.3 60
TRIAL LAKE 9992 16.0 25.6 63 14.1 25.6 55
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Basin wide percent of average 64 66
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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.