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 THURSDAY: MARCH 31 , 2005
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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 11.9 18.1 66 14.8 21.6 69
COTTONWOOD CREEK 7600 20.0 24.0 83 22.1 27.6 80
GRANITE CREEK 6770 13.1 18.6 70 15.6 20.0 78
GRASSY LAKE 7265 24.7 35.9 69 25.2 36.2 70
GROS VENTRE SUMMIT 8750 10.4 14.3 73 10.6 12.9 82
LEWIS LAKE DIVIDE 7850 23.3 35.6 65 22.9 37.0 62
PHILLIPS BENCH 8200 22.6 29.0 78 22.4 29.2 77
SALT RIVER SUMMIT 7600 13.5 14.5 93 16.9 18.9 89
SNAKE RIVER STATION 6920 11.7 19.1 61 14.2 22.4 63
SPRING CREEK DIVIDE 9000 24.2 26.8 90 22.4 26.7 84
THUMB DIVIDE 7980 13.8 19.1 72 13.1 19.0 69
TOGWOTEE PASS 9580 16.5 25.1 66 16.5 24.8 67
TWO OCEAN PLATEAU 9240 22.8 28.2 81 18.5 27.9 66
WILLOW CREEK 8450 26.9 30.4 88 29.7 32.4 92
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Basin wide percent of average 75 74
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 14.8 23.5 63 13.4 20.2 66
BLACK BEAR 8170 32.9 39.6 83 29.3 40.7 72
CANYON 8090 9.3 13.8 67 10.7 15.5 69
FISHER CREEK 9100 24.8 35.2 70 -M 36.6 *
MADISON PLATEAU 7750 19.1 25.4 75 20.7 26.9 77
NORTHEAST ENTRANCE 7350 5.9 11.3 52 7.5 12.7 59
PARKER PEAK 9400 15.0 21.8 69 12.5 16.3 77
SYLVAN LAKE 8420 14.6 22.7 64 16.6 21.0 79
THUMB DIVIDE 7980 13.8 19.1 72 13.1 19.0 69
TWO OCEAN PLATEAU 9240 22.8 28.2 81 18.5 27.9 66
WHISKEY CREEK 6800 13.5 17.3 78 16.4 21.1 78
WHITE MILL 8700 17.0 24.5 69 15.8 27.2 58
WOLVERINE 7650 7.6 11.6 66 7.3 12.8 57
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Basin wide percent of average 72 70
WIND RIVER
BURROUGHS CREEK 8750 9.7 14.7 66 10.0 16.3 61
COLD SPRINGS 9630 7.1 8.9 80 7.8 10.6 74
DEER PARK 9700 21.7 17.0 128 23.8 22.0 108
HOBBS PARK 10100 14.0 15.0 93 12.6 12.8 98
LITTLE WARM 9370 8.0 11.9 67 9.0 13.4 67
SOUTH PASS 9040 19.4 16.6 117 19.6 18.5 106
ST. LAWRENCE ALT 8620 6.9 7.4 93 8.2 8.8 93
TOGWOTEE PASS 9580 16.5 25.1 66 16.5 24.8 67
TOWNSEND CREEK 8700 9.9 8.7 114 12.9 11.6 111
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Basin wide percent of average 90 87
BIGHORN BASIN
BALD MTN. 9380 15.4 19.8 78 14.1 17.4 81
BEAR TRAP MEADOW 8200 4.8 5.2 92 7.1 8.2 87
BLACKWATER 9780 14.3 24.7 58 13.2 20.6 64
BONE SPRINGS DIV 9350 13.9 16.3 85 13.7 14.6 94
EVENING STAR 9200 17.2 29.9 58 19.2 25.4 76
GRAVE SPRINGS 8550 6.7 9.3 72 8.0 9.6 83
KIRWIN 9550 6.5 11.4 57 7.3 11.2 65
MARQUETTE 8760 4.4 8.9 49 5.9 9.7 61
MIDDLE POWDER 7760 7.8 11.7 67 7.3 12.3 59
OWL CREEK 8975 4.2 5.5 76 3.9 5.9 66
POWDER RIVER PASS 9480 10.6 10.8 98 12.0 12.3 98
SHELL CREEK 9580 13.7 14.8 93 12.2 13.3 92
SYLVAN LAKE 8420 14.6 22.7 64 16.6 21.0 79
SYLVAN ROAD 7120 8.9 12.9 69 11.6 17.7 66
TIMBER CREEK 7950 2.6 5.7 46 3.3 7.3 45
YOUNTS PEAK 8350 10.2 17.2 59 10.2 16.2 63
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Basin wide percent of average 69 74
SHOSHONE RIVER
BLACKWATER 9780 14.3 24.7 58 13.2 20.6 64
EVENING STAR 9200 17.2 29.9 58 19.2 25.4 76
KIRWIN 9550 6.5 11.4 57 7.3 11.2 65
MARQUETTE 8760 4.4 8.9 49 5.9 9.7 61
SYLVAN LAKE 8420 14.6 22.7 64 16.6 21.0 79
SYLVAN ROAD 7120 8.9 12.9 69 11.6 17.7 66
YOUNTS PEAK 8350 10.2 17.2 59 10.2 16.2 63
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Basin wide percent of average 60 69
POWDER-TONGUE
BEAR TRAP MEADOW 8200 4.8 5.2 92 7.1 8.2 87
BIG GOOSE 7990 7.8 10.6 74 9.0 8.4 107
BONE SPRINGS DIV 9350 13.9 16.3 85 13.7 14.6 94
BURGESS JUNCTION 7880 9.2 11.6 79 10.3 12.1 85
CLOUD PEAK RESERVOIR 9860 13.9 13.4 104 11.6 12.8 91
DOME LAKE 8880 10.6 12.5 85 11.5 13.1 88
GRAVE SPRINGS 8550 6.7 9.3 72 8.0 9.6 83
HANSEN SAWMILL 8360 6.4 6.5 98 7.9 8.1 98
MIDDLE POWDER 7760 7.8 11.7 67 7.3 12.3 59
POWDER RIVER PASS 9480 10.6 10.8 98 12.0 12.3 98
SUCKER CREEK 8880 11.0 11.7 94 12.8 13.5 95
TIE CREEK 6870 2.2 6.1 36 8.1 9.8 83
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Basin wide percent of average 83 89
BELLE FOURCHE
BLIND PARK 6890 5.3 8.7 61 7.8 11.0 71
COLE CANYON 5910 3.2 6.2 52 5.9 -M *
NORTH RAPID CREEK 6130 3.8 8.3 46 6.4 8.6 74
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Basin wide percent of average 53 72
UPPER N. PLATTE RIVER
COLUMBINE 9160 18.9 24.9 76 20.8 25.2 83
DIVIDE PEAK 8860 19.7 19.9 99 22.1 20.7 107
ELK RIVER 8700 22.0 19.5 113 20.5 19.6 105
JOE WRIGHT 10120 19.3 21.4 90 19.9 24.7 81
NORTH FRENCH CREEK 10130 24.0 29.3 82 22.7 24.7 92
OLD BATTLE 9920 32.8 32.2 102 34.3 34.6 99
SAGE CREEK BASIN 7850 14.7 11.5 128 15.7 12.0 131
SOUTH BRUSH CREEK 8440 11.9 13.1 91 12.7 16.3 78
TOWER 10500 37.9 45.5 83 35.1 38.4 91
WEBBER SPRINGS 9250 23.4 26.3 89 25.9 26.6 97
WILLOW CREEK PASS 9540 13.0 12.0 108 12.3 12.8 96
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Basin wide percent of average 93 95
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 17.3 23.7 73 16.2 22.0 74
CASPER MTN. 7850 11.1 14.5 77 11.9 14.3 83
DEADMAN HILL 10220 15.5 16.3 95 13.6 16.9 80
DEER PARK 9700 21.7 17.0 128 23.8 22.0 108
LAPRELE CREEK 8375 6.7 10.9 61 9.0 12.5 72
RENO HILL 8500 10.0 14.2 70 10.6 14.9 71
ROACH 9700 13.9 17.1 81 16.4 18.6 88
SAND LAKE 10050 22.2 32.5 68 20.6 24.0 86
SOUTH PASS 9040 19.4 16.6 117 19.6 18.5 106
WINDY PEAK 7900 6.5 8.0 81 8.2 10.5 78
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Basin wide percent of average 84 86
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 11.9 11.0 108 14.3 15.8 91
DIVIDE PEAK 8860 19.7 19.9 99 22.1 20.7 107
OLD BATTLE 9920 32.8 32.2 102 34.3 34.6 99
SANDSTONE RS 8150 13.8 14.8 93 18.6 18.7 99
WHISKEY PARK 8950 26.9 30.2 89 24.9 28.6 87
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Basin wide percent of average 97 96
UPPER GREEN RIVER
BIG SANDY OPENING 9080 15.3 14.6 105 14.6 13.4 109
BLIND BULL SUM 8900 19.0 28.1 68 16.0 22.4 71
EAST RIM DIVIDE 7930 9.4 13.2 71 9.9 12.1 82
ELKHART PARK G.S. 9400 12.3 13.5 91 13.4 13.3 101
GROS VENTRE SUMMIT 8750 10.4 14.3 73 10.6 12.9 82
KENDALL R.S. 7740 10.3 14.6 71 12.5 14.6 86
LOOMIS PARK 8240 15.0 17.4 86 15.2 17.5 87
NEW FORK LAKE 8340 11.0 11.3 97 10.2 11.3 90
SNIDER BASIN 8060 13.7 14.6 94 13.8 16.2 85
SPRING CREEK DIVIDE 9000 24.2 26.8 90 22.4 26.7 84
TRIPLE PEAK 8500 20.0 25.1 80 20.4 25.0 82
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Basin wide percent of average 83 86
LOWER GREEN RIVER
HAMS FORK 7840 12.3 12.0 103 13.0 12.2 107
HEWINTA 9500 11.7 12.0 98 12.2 14.6 84
HICKERSON PARK 9100 8.6 7.6 113 10.5 7.9 133
HOLE-IN-ROCK 9150 7.5 7.2 104 9.8 7.4 132
INDIAN CREEK 9425 28.1 28.0 100 23.8 25.6 93
KELLEY R.S. 8180 17.5 17.0 103 19.3 20.5 94
STEEL CREEK PARK 10100 15.4 15.8 97 15.8 16.2 98
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Basin wide percent of average 102 100
UPPER BEAR RIVER
BUG LAKE 7950 21.1 21.1 100 22.0 19.4 113
HAYDEN FORK 9100 19.6 16.5 119 24.4 21.1 116
KELLEY R.S. 8180 17.5 17.0 103 19.3 20.5 94
LILY LAKE 9050 17.0 13.4 127 17.8 17.5 102
MONTE CRISTO 8960 30.4 30.0 101 28.2 25.6 110
SALT RIVER SUMMIT 7600 13.5 14.5 93 16.9 18.9 89
TRIAL LAKE 9960 30.1 25.2 119 29.8 25.0 119
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Basin wide percent of average 108 107
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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.