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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785

At 8:08a, 5/20/18
Temperature 41.4°F
Wind 5.0 mph


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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: JANUARY 17 , 2015
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 Base Camp                7030   10.7     9.7    110    12.0    12.3     98
 Black Bear               8170   18.8    20.9     90    19.5    21.7     90
 Blind Bull Sum           8650   16.5    12.3    134    11.9    11.3    105
 Cottonwood Creek         7670   14.4    10.6    136    17.0    13.9    122
 East Rim Divide          7930    9.2     5.7    161     8.1     6.8    119
 Grand Targhee            9260   25.9    21.2    122    20.9    18.0    116
 Granite Creek            6770   12.4     8.7    143    12.9    11.8    109
 Grassy Lake              7265   19.3    16.7    116    20.0    20.9     96
 Gros Ventre Summit       8750    8.8     7.5    117     6.9     7.3     95
 Gunsight Pass            9820    8.0     7.4    108     8.0     7.8    103
 Lewis Lake Divide        7850   16.1    16.6     97    18.8    20.4     92
 Phillips Bench           8200   15.1    15.0    101    16.5    16.0    103
 Salt River Summit        7760    7.3     6.4    114     9.2     9.3     99
 Snake River Station      6920   11.7     9.1    129    13.9    13.5    103
 Spring Creek Divide      9000   17.0    12.2    139    16.7    13.6    123
 Thumb Divide             7980    7.6     8.0     95     8.6    10.8     80
 Togwotee Pass            9580   14.7    13.0    113    15.9    14.1    113
 Two Ocean Plateau        9240   16.9    15.5    109    15.3    15.4     99
 Willow Creek             8380   15.9    14.3    111    19.1    19.0    101
 Younts Peak              8350     -M     8.5       *     -M     9.4       *
                                                -----                  -----
                Basin Index (%)                  115                    103


MADISON-GALLATIN

 Black Bear               8170   18.8    20.9     90    19.5    21.7     90
 Canyon                   7870    8.0     7.3    110     8.8     9.4     94
 Madison Plateau          7750   11.6    12.5     93    12.0    15.2     79
 West Yellowstone         6700    5.7     6.3     90     7.1     8.4     85
 Whiskey Creek            6800    7.6     8.4     90     9.3    11.8     79
                                                -----                  -----
                Basin Index (%)                   93                     85


YELLOWSTONE

 Beartooth Lake           9360   14.3    12.5    114    13.6    11.3    120
 Burnt Mtn                5880    4.5     2.2    205     7.5     7.4    101
 Canyon                   7870    8.0     7.3    110     8.8     9.4     94
 Cole Creek               7850    6.4     7.2     89     4.9     7.1     69
 Evening Star             9200   17.1    14.1    121    18.4    15.9    116
 Fisher Creek             9100   19.9    18.4    108    18.3    18.2    101
 Northeast Entrance       7350    7.5     5.4    139     9.8     7.4    132
 Parker Peak              9400   14.8    11.6    128    14.1    10.1    140
 Sylvan Lake              8420   10.8    11.2     96    13.1    13.2     99
 Thumb Divide             7980    7.6     8.0     95     8.6    10.8     80
 Two Ocean Plateau        9240   16.9    15.5    109    15.3    15.4     99
 White Mill               8700   16.1    12.8    126    15.3    13.7    112
 Wolverine                7650    9.7     6.0    162     9.3     7.4    126
                                                -----                  -----
                Basin Index (%)                  116                    107


WIND RIVER

 Burroughs Creek          8750    8.9     7.4    120    10.5     9.4    112
 Castle Creek             8400    5.5      -M       *    5.5      -M       *
 Cold Springs             9630    4.8     4.1    117     5.2     5.7     91
 Deer Park                9700    6.0     7.3     82     8.2    10.9     75
 Hobbs Park              10100    5.8     7.3     79     6.1     7.0     87
 Kirwin                   9550    6.9     5.3    130     8.3     6.6    126
 Little Warm              9370    6.2     5.6    111     7.2     7.3     99
 Owl Creek                8975    2.7     2.9     93     4.5     3.3    136
 South Pass               9040    6.2     7.8     79     6.7     9.8     68
 St. Lawrence Alt         8620    2.2     3.5     63     3.3     4.9     67
 Togwotee Pass            9580   14.7    13.0    113    15.9    14.1    113
 Townsend Creek           8700    3.4     4.4     77     5.7     6.5     88
                                                -----                  -----
                Basin Index (%)                   99                     95


BIGHORN BASIN

 Bald Mtn.                9380    9.9     9.9    100     8.0     9.6     83
 Bear Trap Meadow         8200    4.3     2.9    148     4.3     4.7     91
 Bone Springs Div         9350    8.2     8.7     94     7.2     8.5     85
 Grave Springs            8550    3.9     4.4     89     3.5     5.8     60
 Kirwin                   9550    6.9     5.3    130     8.3     6.6    126
 Marquette                8760    3.1      -M       *    4.7      -M       *
 Middle Powder            7760    5.7     6.0     95      -M     6.8       *
 Owl Creek                8975    2.7     2.9     93     4.5     3.3    136
 Powder River Pass        9480    6.8     5.8    117     7.7     7.0    110
 Shell Creek              9580    7.7     8.4     92     7.6     7.8     97
 Timber Creek             7950    3.2     2.6    123     4.8     4.2    114
                                                -----                  -----
                Basin Index (%)                  104                     97


SHOSHONE RIVER

 Blackwater               9780   13.3    13.0    102    13.0    11.8    110
 Evening Star             9200   17.1    14.1    121    18.4    15.9    116
 Marquette                8760    3.1      -M       *    4.7      -M       *
 Sylvan Road              7120    8.6     6.8    126    11.5    10.7    107
 Younts Peak              8350     -M     8.5       *     -M     9.4       *
                                                -----                  -----
                Basin Index (%)                  115                    112


POWDER RIVER

 Bear Trap Meadow         8200    4.3     2.9    148     4.3     4.7     91
 Cloud Peak Reservoir     9860    7.2     7.3     99     7.3     7.1    103
 Grave Springs            8550    3.9     4.4     89     3.5     5.8     60
 Hansen Sawmill           8360    4.6     3.5    131     5.4     4.6    117
 Middle Powder            7760    5.7     6.0     95      -M     6.8       *
 Powder River Pass        9480    6.8     5.8    117     7.7     7.0    110
 Soldier Park             8720    3.9      -M       *    4.9      -M       *
                                                -----                  -----
                Basin Index (%)                  109                     97


TONGUE RIVER

 Big Goose                7990    4.6     4.3    107     5.2     5.9     88
 Bone Springs Div         9350    8.2     8.7     94     7.2     8.5     85
 Burgess Junction         7880    5.6     5.9     95     5.7     6.8     84
 Dome Lake                8880    5.9     6.2     95     6.0     7.6     79
 Little Goose             8870    4.7      -M       *    6.0      -M       *
 Sucker Creek             8880    6.1     6.4     95     6.8     7.8     87
 Tie Creek                6870    3.4     2.8    121     5.7     6.5     88
                                                -----                  -----
                Basin Index (%)                   99                     85


BELLE FOURCHE

 Cole Canyon              5910    3.0     2.7    111     5.1     5.2     98
                                                -----                  -----
                Basin Index (%)                  111                     98


CHEYENNE RIVER BASIN

 Blind Park               6890    4.0     4.1     98     5.6     7.0     80
 North Rapid Creek        6130    4.6     3.7    124     6.5     5.7    114
                                                -----                  -----
                Basin Index (%)                  110                     95


UPPER N. PLATTE

 Arapaho Ridge           10960    9.4    11.2     84    10.8    12.8     84
 Blackhall Mtn            9820   12.1      -M       *   15.1      -M       *
 Columbine                9160   11.3    12.5     90    13.2    14.2     93
 Divide Peak              8880    5.1    10.5     49     8.1    12.1     67
 Joe Wright              10120    9.2    11.4     81    15.2    14.2    107
 Laprele Creek            8375    3.8     5.0     76     4.3     6.8     63
 Med Bow                 10500   17.0      -M       *   16.4      -M       *
 North French Creek      10130   13.5    14.0     96    13.8    14.8     93
 Never Summer            10280    8.9    10.6     84     9.7      -M       *
 Old Battle              10000   13.1    15.8     83    13.6    19.7     69
 Rawah                    9020    6.3     5.5    115     9.4     8.5    111
 Sage Creek Basin         7850    5.1     7.3     70     4.8     8.7     55
 Sand Lake               10050   12.7    14.5     88    11.6    13.4     87
 South Brush Creek        8440    4.9     6.2     79     6.0     8.5     71
 Tower                   10500   18.3    22.9     80    20.4    22.3     91
 Webber Springs           9250    9.2    12.0     77    10.8    15.0     72
 Willow Creek Pass        9540    5.1     6.3     81     7.1     7.4     96
 Zirkel                   9340     -M    15.9       *     -M    16.7       *
                                                -----                  -----
                Basin Index (%)                   82                     84


SWEETWATER

 Deer Park                9700    6.0     7.3     82     8.2    10.9     75
 Larsen Creek             9000    4.5     6.1     74     6.5      -M       *
 South Pass               9040    6.2     7.8     79     6.7     9.8     68
                                                -----                  -----
                Basin Index (%)                   79                     72


LOWER N. PLATTE

 Casper Mtn.              7900     -M     6.8       *     -M     8.2       *
 Laprele Creek            8375    3.8     5.0     76     4.3     6.8     63
 Reno Hill                8400    5.2     6.7     78     6.6     8.1     81
 Windy Peak               7900    3.5     3.7     95     3.7     5.8     64
                                                -----                  -----
                Basin Index (%)                   81                     71


LARAMIE RIVER

 Brooklyn Lake           10240   10.9    10.9    100    11.5    11.2    103
 Cinnabar Park            9574    9.1    11.7     78    12.6    14.3     88
 Crow Creek               8330    3.6     5.1     71     5.3     6.0     88
 Deadman Hill            10220    8.4     8.3    101     8.9     9.1     98
 Rawah                    9020    6.3     5.5    115     9.4     8.5    111
 Roach                    9700    5.8     8.8     66     8.4    10.5     80
                                                -----                  -----
                Basin Index (%)                   88                     94


S. PLATTE

 Black Mountain           8920    5.1      -M       *    6.9      -M       *
 Crow Creek               8330    3.6     5.1     71     5.3     6.0     88
 Deadman Hill            10220    8.4     8.3    101     8.9     9.1     98
                                                -----                  -----
                Basin Index (%)                   90                     94


LITTLE SNAKE RIVER

 Battle Mountain          7440    4.6     5.7     81     6.7     8.6     78
 Divide Peak              8880    5.1    10.5     49     8.1    12.1     67
 Elk River                8700    7.8     9.4     83     9.1    11.2     81
 Little Snake River       8915   12.5    12.4    101    16.8    17.9     94
 Old Battle              10000   13.1    15.8     83    13.6    19.7     69
 Sage Creek Basin         7850    5.1     7.3     70     4.8     8.7     55
 Sandstone RS             8150    5.1     6.9     74     6.5    10.5     62
 Whiskey Park             8950   14.0    13.5    104    14.8    15.3     97
                                                -----                  -----
                Basin Index (%)                   83                     77


UPPER GREEN RIVER

 Big Sandy Opening        9080    6.9     7.0     99     6.5     7.4     88
 Blind Bull Sum           8650   16.5    12.3    134    11.9    11.3    105
 East Rim Divide          7930    9.2     5.7    161     8.1     6.8    119
 Elkhart Park G.S.        9400    7.2     6.5    111     7.9     7.6    104
 Gros Ventre Summit       8750    8.8     7.5    117     6.9     7.3     95
 Gunsight Pass            9820    8.0     7.4    108     8.0     7.8    103
 Kendall R.S.             7740    8.4     6.6    127     8.5     8.1    105
 Loomis Park              8240   10.9     7.9    138    11.4     9.9    115
 New Fork Lake            8340    8.0     5.7    140     7.7     6.2    124
 Pocket Creek             9360    5.9      -M       *    4.6      -M       *
 Snider Basin             8060    9.6     6.4    150    10.6     8.1    131
 Spring Creek Divide      9000   17.0    12.2    139    16.7    13.6    123
 Triple Peak              8500   16.7    11.4    146    18.1    13.9    130
                                                -----                  -----
                Basin Index (%)                  132                    113


LOWER GREEN RIVER

 Blacks Fork Jct          8870    3.5      -M       *    5.4      -M       *
 Buck Pasture             9700    6.9      -M       *    8.2      -M       *
 EF Blacks Fork GS        9360    4.3      -M       *    5.6      -M       *
 Hams Fork                7840    6.7     5.8    116     6.1     6.4     95
 Hewinta                  9519    3.8     4.9     78     6.1     7.6     80
 Hickerson Park           9145    4.0     3.2    125     4.7     5.6     84
 Hole-in-Rock             9150    3.3     3.4     97     4.3     5.2     83
 Indian Creek             9425   12.4    12.5     99    12.4    12.3    101
 Kelley R.S.              8180    8.5     7.5    113     9.4    10.2     92
 Spirit Lk               10235    4.8      -M       *    6.8      -M       *
 Steel Creek Park        10200    3.1     7.4     42     7.1     8.8     81
                                                -----                  -----
                Basin Index (%)                   94                     89


UPPER BEAR RIVER

 Bear River RS            8777    3.8      -M       *    4.8      -M       *
 Bug Lake                 7950    7.9     8.7     91     8.0    10.9     73
 Burts Miller Ranch       8000    3.2      -M       *    2.5      -M       *
 Chalk Creek #1           8993    9.5    11.7     81     9.6    13.8     70
 Hayden Fork              9212    5.4     7.3     74     9.1    11.5     79
 Kelley R.S.              8180    8.5     7.5    113     9.4    10.2     92
 Lily Lake                9156    5.2     6.5     80     5.9     9.5     62
 Monte Cristo             8960   12.3    13.7     90    11.6    14.4     81
 Salt River Summit        7760    7.3     6.4    114     9.2     9.3     99
                                                -----                  -----
                Basin Index (%)                   91                     79

-----------------------------------------------------------------------------


 -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.