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 SATURDAY: APRIL 23 , 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 8.3 14.6 57 15.9 23.7 67
COTTONWOOD CREEK 7600 16.7 21.8 77 23.7 30.8 77
GRANITE CREEK 6770 10.3 14.9 69 16.2 21.8 74
GRASSY LAKE 7265 23.3 35.2 66 27.2 39.7 69
GROS VENTRE SUMMIT 8750 11.6 13.9 83 11.7 14.7 80
LEWIS LAKE DIVIDE 7850 -M 35.7 * 24.2 40.4 60
PHILLIPS BENCH 8200 22.3 30.0 74 23.9 32.1 74
SALT RIVER SUMMIT 7600 11.9 12.5 95 17.8 20.9 85
SNAKE RIVER STATION 6920 7.4 14.8 50 14.9 24.7 60
SPRING CREEK DIVIDE 9000 25.6 28.6 90 23.6 29.3 81
THUMB DIVIDE 7980 12.6 16.8 75 14.2 21.2 67
TOGWOTEE PASS 9580 18.2 27.3 67 18.6 27.9 67
TWO OCEAN PLATEAU 9240 26.1 31.2 84 20.3 31.0 65
WILLOW CREEK 8450 24.7 31.2 79 32.4 36.3 89
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Basin wide percent of average 75 72
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 16.7 25.7 65 15.4 22.6 68
BLACK BEAR 8170 36.8 40.4 91 33.6 44.5 76
CANYON 8090 8.8 12.6 70 11.6 17.1 68
FISHER CREEK 9100 27.0 37.4 72 27.2 40.5 67
MADISON PLATEAU 7750 21.1 25.1 84 22.7 29.5 77
NORTHEAST ENTRANCE 7350 3.2 8.9 36 8.7 14.3 61
PARKER PEAK 9400 17.5 23.9 73 14.6 18.7 78
SYLVAN LAKE 8420 14.2 24.0 59 18.6 23.7 78
THUMB DIVIDE 7980 12.6 16.8 75 14.2 21.2 67
TWO OCEAN PLATEAU 9240 26.1 31.2 84 20.3 31.0 65
WHISKEY CREEK 6800 13.0 16.5 79 18.1 23.4 77
WHITE MILL 8700 18.7 26.2 71 17.6 30.2 58
WOLVERINE 7650 2.7 9.1 30 8.1 14.6 55
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Basin wide percent of average 73 70
WIND RIVER
BURROUGHS CREEK 8750 11.0 14.3 77 11.8 18.5 64
COLD SPRINGS 9630 4.1 5.9 69 9.4 13.0 72
DEER PARK 9700 22.7 17.9 127 25.8 25.7 100
HOBBS PARK 10100 15.1 17.4 87 14.7 15.8 93
LITTLE WARM 9370 8.0 11.8 68 10.6 15.9 67
SOUTH PASS 9040 19.2 17.9 107 21.7 21.6 100
ST. LAWRENCE ALT 8620 5.5 6.7 82 10.0 11.2 89
TOGWOTEE PASS 9580 18.2 27.3 67 18.6 27.9 67
TOWNSEND CREEK 8700 10.2 9.4 109 15.2 14.5 105
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Basin wide percent of average 89 84
BIGHORN BASIN
BALD MTN. 9380 16.7 22.8 73 17.1 20.3 84
BEAR TRAP MEADOW 8200 .6 3.6 17 8.2 10.2 80
BLACKWATER 9780 16.2 27.9 58 15.5 23.6 66
BONE SPRINGS DIV 9350 14.4 18.0 80 16.0 17.3 92
EVENING STAR 9200 18.6 32.6 57 21.6 28.7 75
GRAVE SPRINGS 8550 6.3 10.9 58 8.9 12.2 73
KIRWIN 9550 8.5 12.7 67 9.6 13.4 72
MARQUETTE 8760 5.8 10.9 53 8.7 12.7 69
MIDDLE POWDER 7760 8.9 14.2 63 8.6 14.9 58
OWL CREEK 8975 2.5 4.6 54 6.9 7.6 91
POWDER RIVER PASS 9480 8.7 11.3 77 13.6 14.9 91
SHELL CREEK 9580 15.2 16.5 92 14.1 15.9 89
SYLVAN LAKE 8420 14.2 24.0 59 18.6 23.7 78
SYLVAN ROAD 7120 6.8 10.1 67 12.1 19.8 61
TIMBER CREEK 7950 1.7 5.2 33 5.7 9.7 59
YOUNTS PEAK 8350 11.5 18.1 64 11.9 18.1 66
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Basin wide percent of average 64 75
SHOSHONE RIVER
BLACKWATER 9780 16.2 27.9 58 15.5 23.6 66
EVENING STAR 9200 18.6 32.6 57 21.6 28.7 75
KIRWIN 9550 8.5 12.7 67 9.6 13.4 72
MARQUETTE 8760 5.8 10.9 53 8.7 12.7 69
SYLVAN LAKE 8420 14.2 24.0 59 18.6 23.7 78
SYLVAN ROAD 7120 6.8 10.1 67 12.1 19.8 61
YOUNTS PEAK 8350 11.5 18.1 64 11.9 18.1 66
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Basin wide percent of average 60 70
POWDER-TONGUE
BEAR TRAP MEADOW 8200 .6 3.6 17 8.2 10.2 80
BIG GOOSE 7990 8.4 12.0 70 11.7 11.7 100
BONE SPRINGS DIV 9350 14.4 18.0 80 16.0 17.3 92
BURGESS JUNCTION 7880 10.6 13.2 80 12.4 14.5 86
CLOUD PEAK RESERVOIR 9860 14.7 15.8 93 14.3 16.0 89
DOME LAKE 8880 9.2 13.8 67 13.7 15.8 87
GRAVE SPRINGS 8550 6.3 10.9 58 8.9 12.2 73
HANSEN SAWMILL 8360 2.5 5.6 45 9.9 10.3 96
MIDDLE POWDER 7760 8.9 14.2 63 8.6 14.9 58
POWDER RIVER PASS 9480 8.7 11.3 77 13.6 14.9 91
SUCKER CREEK 8880 11.9 13.3 89 15.6 16.4 95
TIE CREEK 6870 .8 4.6 17 10.4 12.5 83
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Basin wide percent of average 71 86
BELLE FOURCHE
BLIND PARK 6890 .0 5.8 0 9.4 13.4 70
COLE CANYON 5910 .0 5.5 0 7.9 -M *
NORTH RAPID CREEK 6130 .6 6.3 10 7.7 10.7 72
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Basin wide percent of average 3 71
UPPER N. PLATTE RIVER
COLUMBINE 9160 11.2 22.8 49 21.5 28.2 76
DIVIDE PEAK 8860 17.3 20.1 86 23.3 23.4 100
ELK RIVER 8700 13.4 17.3 77 21.6 22.1 98
JOE WRIGHT 10120 20.2 24.4 83 22.6 28.7 79
NORTH FRENCH CREEK 10130 24.3 33.5 73 24.6 28.4 87
OLD BATTLE 9920 34.1 35.8 95 36.1 38.5 94
SAGE CREEK BASIN 7850 5.4 11.6 47 16.1 13.6 118
SOUTH BRUSH CREEK 8440 7.5 12.2 61 13.9 19.1 73
TOWER 10500 36.8 50.9 72 38.3 43.4 88
WEBBER SPRINGS 9250 20.1 25.6 79 27.2 30.0 91
WILLOW CREEK PASS 9540 14.2 13.9 102 13.6 15.0 91
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Basin wide percent of average 76 89
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10220 17.1 27.4 62 19.2 25.7 75
CASPER MTN. 7850 9.5 17.0 56 13.8 18.1 76
DEADMAN HILL 10220 15.8 19.0 83 15.5 19.9 78
DEER PARK 9700 22.7 17.9 127 25.8 25.7 100
LAPRELE CREEK 8375 2.4 8.6 28 10.3 15.5 66
RENO HILL 8500 9.3 15.3 61 13.1 18.8 70
ROACH 9700 13.8 18.4 75 18.3 21.4 86
SAND LAKE 10050 23.3 36.0 65 23.2 27.9 83
SOUTH PASS 9040 19.2 17.9 107 21.7 21.6 100
WINDY PEAK 7900 4.2 6.5 65 9.1 12.7 72
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Basin wide percent of average 75 82
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .4 6.6 6 15.0 17.9 84
DIVIDE PEAK 8860 17.3 20.1 86 23.3 23.4 100
OLD BATTLE 9920 34.1 35.8 95 36.1 38.5 94
SANDSTONE RS 8150 7.7 11.4 68 19.0 21.1 90
WHISKEY PARK 8950 24.3 30.6 79 26.0 32.5 80
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Basin wide percent of average 80 90
UPPER GREEN RIVER
BIG SANDY OPENING 9080 -M 14.4 * -M 15.3 *
BLIND BULL SUM 8900 20.3 28.4 71 17.1 24.5 70
EAST RIM DIVIDE 7930 6.2 13.6 46 10.5 13.4 78
ELKHART PARK G.S. 9400 13.1 13.4 98 15.5 15.3 101
GROS VENTRE SUMMIT 8750 11.6 13.9 83 11.7 14.7 80
KENDALL R.S. 7740 7.2 11.8 61 13.5 16.1 84
LOOMIS PARK 8240 12.5 15.7 80 16.4 19.3 85
NEW FORK LAKE 8340 9.9 9.9 100 11.5 12.9 89
SNIDER BASIN 8060 13.1 13.8 95 14.6 17.9 82
SPRING CREEK DIVIDE 9000 25.6 28.6 90 23.6 29.3 81
TRIPLE PEAK 8500 17.4 24.8 70 21.5 27.7 78
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Basin wide percent of average 79 82
LOWER GREEN RIVER
HAMS FORK 7840 8.2 8.0 102 14.1 14.1 100
HEWINTA 9500 5.8 10.8 54 13.0 17.0 76
HICKERSON PARK 9100 4.6 7.0 66 11.5 9.6 120
HOLE-IN-ROCK 9150 2.7 6.0 45 10.5 9.1 115
INDIAN CREEK 9425 30.6 29.0 106 26.0 28.5 91
KELLEY R.S. 8180 16.0 15.6 103 20.5 22.8 90
STEEL CREEK PARK 10100 16.6 18.0 92 17.1 19.2 89
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Basin wide percent of average 90 94
UPPER BEAR RIVER
BUG LAKE 7950 20.5 19.9 103 23.5 21.6 109
HAYDEN FORK 9100 12.1 14.8 82 25.9 24.1 107
KELLEY R.S. 8180 16.0 15.6 103 20.5 22.8 90
LILY LAKE 9050 12.5 12.8 98 24.3 20.2 120
MONTE CRISTO 8960 30.1 29.5 102 31.3 29.1 108
SALT RIVER SUMMIT 7600 11.9 12.5 95 17.8 20.9 85
TRIAL LAKE 9960 31.0 26.4 117 31.9 28.3 113
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Basin wide percent of average 102 105
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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.