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: MAY 3 , 2001
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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 .0 9.9 0 15.3 25.4 60
COTTONWOOD CREEK 7600 11.0 19.1 58 -M 28.4 *
GRANITE CREEK 6770 6.1 12.1 50 16.3 27.0 60
GRASSY LAKE 7265 17.1 32.9 52 29.0 42.2 69
GROS VENTRE SUMMIT 8775 -M 13.4 * -M 18.2 *
LEWIS LAKE DIVIDE 7860 15.5 33.7 46 23.7 42.9 55
PHILLIPS BENCH 8200 16.9 28.9 58 -M 33.8 *
SALT RIVER SUMMIT 7600 .8 9.3 9 14.0 19.3 73
SNAKE RIVER STATION 6920 .7 15.7 4 18.6 29.6 63
SPRING CREEK DIVIDE 9000 17.6 29.1 60 20.0 31.0 65
THUMB DIVIDE 7980 2.7 14.5 19 13.3 23.8 56
TOGWOTEE PASS 9580 18.0 28.0 64 20.3 32.1 63
TWO OCEAN PLATEAU 9360 22.3 27.4 81 21.8 34.9 62
WILLOW CREEK 8450 13.5 31.3 43 28.7 36.4 79
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Basin wide percent of average 49 64
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 13.8 25.8 53 14.4 21.4 67
BLACK BEAR 7950 24.3 39.4 62 28.5 46.8 61
CANYON 7940 8.6 10.3 83 14.2 16.5 86
FISHER CREEK 9100 21.8 38.5 57 25.4 42.5 60
MADISON PLATEAU 7750 12.0 23.1 52 19.6 30.1 65
NORTHEAST ENTRANCE 7350 .0 5.4 0 9.6 14.1 68
PARKER PEAK 9400 -M 23.6 * -M 18.4 *
SYLVAN LAKE 8420 14.7 23.3 63 22.9 22.6 101
THUMB DIVIDE 7980 2.7 14.5 19 13.3 23.8 56
TWO OCEAN PLATEAU 9360 22.3 27.4 81 21.8 34.9 62
WHISKEY CREEK 6800 4.3 14.4 30 16.8 25.1 67
WHITE MILL 8700 15.8 26.1 61 17.1 32.9 52
WOLVERINE 7650 .1 7.4 1 9.7 15.4 63
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Basin wide percent of average 55 65
WIND RIVER
BURROUGHS CREEK 8750 7.8 12.0 65 11.7 19.6 60
COLD SPRINGS 9630 .1 6.2 2 7.5 13.3 56
DEER PARK 9700 11.3 -M * 16.9 -M *
HOBBS PARK 10100 7.0 17.8 39 9.7 17.5 55
LITTLE WARM 9620 4.6 9.7 47 10.2 16.5 62
SOUTH PASS 9040 8.4 17.9 47 12.6 20.8 61
ST. LAWRENCE ALT 8620 .6 5.0 12 6.4 12.6 51
TOGWOTEE PASS 9580 18.0 28.0 64 20.3 32.1 63
TOWNSEND CREEK 8700 .6 9.0 7 8.6 15.7 55
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Basin wide percent of average 45 59
BIGHORN BASIN
BALD MTN. 9375 17.0 24.1 71 17.3 21.1 82
BEAR TRAP MEADOW 7900 .2 3.8 5 8.0 10.8 74
BLACKWATER 9780 18.0 25.6 70 18.1 20.8 87
BONE SPRINGS DIV 9350 12.2 18.1 67 15.3 18.4 83
EVENING STAR 9200 16.2 30.7 53 24.0 26.2 92
GRAVE SPRINGS 8550 4.1 11.5 36 8.3 12.6 66
KIRWIN 9550 5.3 11.5 46 8.8 13.5 65
MARQUETTE 8760 2.0 8.5 24 7.1 13.7 52
MIDDLE POWDER 7760 5.8 14.7 39 8.4 15.0 56
OWL CREEK 8975 .0 3.1 0 5.1 8.3 61
POWDER RIVER PASS 9480 5.7 9.9 58 11.7 14.9 79
SHELL CREEK 9580 13.1 17.0 77 14.7 16.2 91
SYLVAN LAKE 8420 14.7 23.3 63 22.9 22.6 101
SYLVAN ROAD 8120 5.0 7.3 68 16.5 18.8 88
TIMBER CREEK 7950 .1 5.5 2 6.3 10.2 62
YOUNTS PEAK 8350 .0 17.9 0 12.6 19.5 65
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Basin wide percent of average 51 78
SHOSHONE RIVER
BLACKWATER 9780 18.0 25.6 70 18.1 20.8 87
EVENING STAR 9200 16.2 30.7 53 24.0 26.2 92
KIRWIN 9550 5.3 11.5 46 8.8 13.5 65
MARQUETTE 8760 2.0 8.5 24 7.1 13.7 52
SYLVAN LAKE 8420 14.7 23.3 63 22.9 22.6 101
SYLVAN ROAD 8120 5.0 7.3 68 16.5 18.8 88
YOUNTS PEAK 8350 .0 17.9 0 12.6 19.5 65
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Basin wide percent of average 49 81
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .2 3.8 5 8.0 10.8 74
BIG GOOSE 7990 4.7 -M * 10.0 -M *
BONE SPRINGS DIV 9350 12.2 18.1 67 15.3 18.4 83
BURGESS JUNCTION 7880 8.1 13.2 61 10.8 14.6 74
CLOUD PEAK RESERVOIR 9860 10.5 17.5 60 12.6 17.4 72
DOME LAKE 8880 8.2 14.3 57 12.3 16.6 74
GRAVE SPRINGS 8550 4.1 11.5 36 8.3 12.6 66
HANSEN SAWMILL 8760 .2 6.5 3 8.7 10.5 83
MIDDLE POWDER 7760 5.8 14.7 39 8.4 15.0 56
POWDER RIVER PASS 9480 5.7 9.9 58 11.7 14.9 79
SUCKER CREEK 8880 7.1 13.3 53 12.2 16.8 73
TIE CREEK 6870 2.2 -M * 10.9 14.0 78
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Basin wide percent of average 51 74
BELLE FOURCHE
BLIND PARK 6890 .0 8.9 0 12.9 14.1 91
COLE CANYON 5910 .4 5.0 8 13.0 10.5 124
NORTH RAPID CREEK 6130 .7 -M * 10.6 -M *
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Basin wide percent of average 3 105
UPPER N. PLATTE RIVER
COLUMBINE 9400 10.6 21.0 50 24.9 28.3 88
DIVIDE PEAK 8800 10.7 18.3 58 23.3 27.5 85
ELK RIVER 8700 8.8 15.1 58 19.8 22.3 89
JOE WRIGHT 10120 -M 24.6 * -M 30.6 *
NORTH FRENCH CREEK 10100 29.4 29.0 101 26.7 28.3 94
OLD BATTLE 10000 29.8 38.0 78 33.7 36.0 94
SOUTH BRUSH CREEK 8400 3.6 9.9 36 12.6 20.8 61
TOWER 10500 36.6 51.1 72 39.6 43.6 91
WEBBER SPRINGS 9200 16.3 25.2 65 25.2 30.8 82
WILLOW CREEK PASS 9540 14.5 13.1 111 16.1 15.6 103
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Basin wide percent of average 73 88
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 21.4 28.3 76 22.5 24.0 94
CASPER MTN. 7900 8.6 16.9 51 14.0 19.1 73
DEADMAN HILL 10220 -M 19.0 * -M 21.3 *
DEER PARK 9700 11.3 -M * 16.9 -M *
LAPRELE CREEK 8320 4.2 5.9 71 13.7 14.9 92
RENO HILL 8400 12.4 12.7 98 16.5 22.5 73
ROACH 9700 14.4 17.8 81 19.7 26.1 75
SAND LAKE 10080 30.8 36.9 83 28.2 25.0 113
SOUTH PASS 9040 8.4 17.9 47 12.6 20.8 61
WINDY PEAK 7840 -M 7.3 * 13.4 12.4 108
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Basin wide percent of average 73 85
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .0 4.1 0 16.5 18.7 88
DIVIDE PEAK 8800 10.7 18.3 58 23.3 27.5 85
OLD BATTLE 10000 29.8 38.0 78 33.7 36.0 94
SANDSTONE RS 8150 1.7 8.7 20 19.0 23.2 82
WHISKEY PARK 8950 22.6 29.0 78 26.9 34.3 78
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Basin wide percent of average 66 85
UPPER GREEN RIVER
BIG SANDY OPENING 9100 7.7 13.3 58 12.3 18.6 66
BLIND BULL SUM 8650 14.7 22.7 65 15.1 27.1 56
EAST RIM DIVIDE 7930 8.1 14.5 56 10.0 17.4 57
ELKHART PARK G.S. 9400 10.4 13.4 78 13.7 18.3 75
GROS VENTRE SUMMIT 8775 -M 13.4 * -M 18.2 *
KENDALL R.S. 7740 -M 9.1 * -M 17.7 *
LOOMIS PARK 8240 6.1 14.6 42 14.1 21.6 65
NEW FORK LAKE 8340 2.9 8.7 33 9.8 16.5 59
SNIDER BASIN 8250 5.2 12.4 42 11.8 17.3 68
SPRING CREEK DIVIDE 9000 17.6 29.1 60 20.0 31.0 65
TRIPLE PEAK 8500 11.4 24.5 47 20.9 35.2 59
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Basin wide percent of average 55 63
LOWER GREEN RIVER
HAMS FORK 7840 .1 4.9 2 9.4 15.3 61
HEWINTA 9500 .2 4.5 4 13.7 16.5 83
HICKERSON PARK 9150 2.8 2.6 108 12.4 12.5 99
HOLE-IN-ROCK 9150 2.1 2.0 105 12.2 12.5 98
INDIAN CREEK 9425 16.0 28.3 57 17.5 29.4 60
KELLEY R.S. 8180 5.1 14.3 36 14.5 21.5 67
STEEL CREEK PARK 10100 14.1 18.6 76 15.8 16.3 97
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Basin wide percent of average 54 77
UPPER BEAR RIVER
BUG LAKE 7950 6.8 15.2 45 15.2 22.7 67
HAYDEN FORK 9400 4.0 5.8 69 19.6 23.2 84
KELLEY R.S. 8180 5.1 14.3 36 14.5 21.5 67
LILY LAKE 9050 2.9 8.3 35 15.7 18.2 86
MONTE CRISTO 8960 14.9 25.6 58 23.1 30.5 76
SALT RIVER SUMMIT 7600 .8 9.3 9 14.0 19.3 73
TRIAL LAKE 9960 13.4 23.6 57 21.8 28.5 76
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Basin wide percent of average 47 76
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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 1961-90.
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.