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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


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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 THURSDAY: JULY 20 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030     -M      .0       *   45.7    28.5    160 
 Black Bear               8170     .0      .0       *   65.8    50.6    130 
 Blind Bull Sum           8650     -M      .0       *   42.3    27.0    157 
 Cottonwood Creek         7670     .0      .0       *   48.6    34.7    140 
 East Rim Divide          7930     .1      .0       *   26.0    17.0    153 
 Grand Targhee            9260     .0      .0       *   57.6    43.4    133 
 Granite Creek            6770     .0      .0       *   43.6    26.5    165 
 Grassy Lake              7265     .0      .0       *   66.8    47.9    139 
 Gros Ventre Summit       8750     .0      .0       *   29.8    19.7    151 
 Gunsight Pass            9820     .0      .0       *   32.9    21.5    153 
 Lewis Lake Divide        7850     .0      .0       *   67.3    46.5    145 
 Phillips Bench           8200     .0      .0       *   55.2    37.4    148 
 Salt River Summit        7760     .1      .0       *   33.3    23.3    143 
 Snake River Station      6920     .0      .0       *   43.5    31.1    140 
 Spring Creek Divide      9000     .0      .0       *   47.7    31.9    150 
 Thumb Divide             7980     -M      .0       *   33.8    26.7    127 
 Togwotee Pass            9580     .0      .0       *   48.9    34.2    143 
 Two Ocean Plateau        9240     -M      .0       *     -M    38.6       *
 Willow Creek             8380     .0      .0       *   62.6    46.5    135 
 Younts Peak              8350     .0      .0       *   39.7    24.3    163 
                                                -----                  -----
                Basin Index (%)                     *                   144 
 

MADISON-GALLATIN

 Black Bear               8170     .0      .0       *   65.8    50.6    130 
 Canyon                   7870     .0      .0       *   31.7    24.2    131 
 Madison Plateau          7750     .0      .0       *   44.0    36.8    120 
 West Yellowstone         6700     .0      .0       *   28.4    21.4    133 
 Whiskey Creek            6800     .0      .0       *   34.0    29.4    116 
                                                -----                  -----
                Basin Index (%)                     *                   126 
 

YELLOWSTONE

 Beartooth Lake           9360     .0      .0       *   36.3    29.1    125 
 Burnt Mtn                5880     .0      .0       *   27.1    25.4    107 
 Canyon                   7870     .0      .0       *   31.7    24.2    131 
 Cole Creek               7850     .0      .0       *   22.0    26.0     85 
 Evening Star             9200     .0      .0       *   56.1    39.7    141 
 Fisher Creek             9100     .0      .0       *   58.8    45.9    128 
 Northeast Entrance       7350     .0      .0       *   26.9    20.8    129 
 Parker Peak              9400     .0      .0       *   45.4    27.9    163 
 Sylvan Lake              8420     .0      .0       *   47.2    33.8    140 
 Thumb Divide             7980     -M      .0       *   33.8    26.7    127 
 Two Ocean Plateau        9240     -M      .0       *     -M    38.6       *
 White Mill               8700     .0      .0       *   44.9    35.4    127 
 Wolverine                7650     .0      .0       *   27.8    19.5    143 
                                                -----                  -----
                Basin Index (%)                     *                   129 
 

WIND RIVER

 Burroughs Creek          8750     .0      -M       *   33.9      -M       *
 Castle Creek             8400     .0      -M       *   21.9      -M       *
 Cold Springs             9630     .0      .0       *   27.1    18.1    150 
 Deer Park                9700     .0      .0       *   49.1    30.4    162 
 Hobbs Park              10100     .0      .0       *   40.6    23.7    171 
 Kirwin                   9550     .0      .0       *   33.8    20.9    162 
 Little Warm              9370     .0      .0       *   31.2    21.4    146 
 Owl Creek                8975     .0      .0       *   19.6    13.7    143 
 South Pass               9040     .0      .0       *   39.3    26.1    151 
 St. Lawrence Alt         8620     .0      .0       *   24.5    17.1    143 
 Togwotee Pass            9580     .0      .0       *   48.9    34.2    143 
 Townsend Creek           8700     .0      .0       *   33.1    20.8    159 
                                                -----                  -----
                Basin Index (%)                     *                   153 
 

BIGHORN BASIN

 Bald Mtn.                9380     .0      .0       *   26.5    27.7     96 
 Bear Trap Meadow         8200     .0      .0       *   20.1    17.1    118 
 Bone Springs Div         9350     .0      .0       *   27.7    26.5    105 
 Grave Springs            8550     .0      .0       *   16.5    19.3     85 
 Kirwin                   9550     .0      .0       *   33.8    20.9    162 
 Marquette                8760     .0      -M       *   29.3      -M       *
 Middle Powder            7760     .0      .0       *   18.1    20.9     87 
 Owl Creek                8975     .0      .0       *   19.6    13.7    143 
 Powder River Pass        9480     .0      .0       *   23.5    22.6    104 
 Shell Creek              9580     .0      .0       *   25.1    24.1    104 
 Timber Creek             7950     .0      .0       *   20.9    16.8    124 
                                                -----                  -----
                Basin Index (%)                     *                   111 
 

SHOSHONE RIVER

 Blackwater               9780     .0      .0       *   51.8    31.4    165 
 Evening Star             9200     .0      .0       *   56.1    39.7    141 
 Marquette                8760     .0      -M       *   29.3      -M       *
 Sylvan Road              7120     .0      .0       *   36.1    24.8    146 
 Younts Peak              8350     .0      .0       *   39.7    24.3    163 
                                                -----                  -----
                Basin Index (%)                     *                   153 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   20.1    17.1    118 
 Cloud Peak Reservoir     9860     .0      .0       *   32.5    25.5    127 
 Grave Springs            8550     .0      .0       *   16.5    19.3     85 
 Hansen Sawmill           8360     .0      .0       *     -M    17.8       *
 Middle Powder            7760     .0      .0       *   18.1    20.9     87 
 Powder River Pass        9480     .0      .0       *   23.5    22.6    104 
 Soldier Park             8720     .0      -M       *   26.6      -M       *
                                                -----                  -----
                Basin Index (%)                     *                   105 
 

TONGUE RIVER

 Big Goose                7990     .0      .0       *   23.8    20.7    115 
 Bone Springs Div         9350     .0      .0       *   27.7    26.5    105 
 Burgess Junction         7880     .0      .0       *   25.3    21.7    117 
 Dome Lake                8880     .0      .0       *   28.9    23.9    121 
 Little Goose             8870     .0      -M       *   28.5      -M       *
 Sucker Creek             8880     .0      .0       *   28.6    25.7    111 
 Tie Creek                6870     .0      .0       *   27.8    22.5    124 
                                                -----                  -----
                Basin Index (%)                     *                   115 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   17.9    20.9     86 
                                                -----                  -----
                Basin Index (%)                     *                    86 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   19.0    23.2     82 
 North Rapid Creek        6130     .0      .0       *   18.8    21.6     87 
                                                -----                  -----
                Basin Index (%)                     *                    84 
 

UPPER N. PLATTE

 Arapaho Ridge           10960     .1      .0       *   33.7    32.8    103 
 Blackhall Mtn            9820     -M      -M       *   46.2      -M       *
 Columbine                9160     .3      .0       *   36.2    34.0    106 
 Divide Peak              8880     .0      .0       *   27.5    29.6     93 
 Joe Wright              10120     -M      .0       *   38.5    37.9    102 
 Laprele Creek            8375     .1      .0       *   19.1    20.7     92 
 Med Bow                 10500     .1      -M       *   46.3      -M       *
 North French Creek      10130     -M      .0       *   37.6    38.6     97 
 Never Summer            10280     .0      .0       *   26.8      -M       *
 Old Battle              10000     -M      .0       *   47.0    46.6    101 
 Rawah                    9020     .1      .0       *   24.0    22.3    108 
 Sage Creek Basin         7850     -M      .0       *   19.7    19.7    100 
 Sand Lake               10050     .1      .0       *   39.0    36.8    106 
 South Brush Creek        8440     .0      .0       *   18.1    23.5     77 
 Tower                   10500     .0      .0       *   59.8    52.8    113 
 Webber Springs           9250     .1      .0       *   40.5    35.7    113 
 Willow Creek Pass        9540     .1      .0       *   24.2    21.4    113 
 Zirkel                   9340     -M      .0       *   53.1    37.6    141 
                                                -----                  -----
                Basin Index (%)                     *                   106 
 

SWEETWATER

 Deer Park                9700     .0      .0       *   49.1    30.4    162 
 Larsen Creek             9000     .1      .0       *   29.4      -M       *
 South Pass               9040     .0      .0       *   39.3    26.1    151 
                                                -----                  -----
                Basin Index (%)                     *                   156 
 

LOWER N. PLATTE

 Casper Mtn.              7900     .0      .0       *   24.1    24.6     98 
 Laprele Creek            8375     .1      .0       *   19.1    20.7     92 
 Reno Hill                8400     .0      .0       *   23.1    25.4     91 
 Windy Peak               7900     .2      .0       *   19.7    19.2    103 
                                                -----                  -----
                Basin Index (%)                     *                    96 
 

LARAMIE RIVER

 Brooklyn Lake           10240     -M      .0       *   32.0    31.5    102 
 Cinnabar Park            9574     .0      .0       *   30.8    33.6     92 
 Crow Creek               8330     -M      .0       *   17.0    20.4     83 
 Deadman Hill            10220     .0      .0       *   30.6    26.6    115 
 Rawah                    9020     .1      .0       *   24.0    22.3    108 
 Roach                    9700     .0      .0       *   29.6    28.7    103 
                                                -----                  -----
                Basin Index (%)                     *                   101 
 

S. PLATTE

 Black Mountain           8920     -M      -M       *   21.3      -M       *
 Crow Creek               8330     -M      .0       *   17.0    20.4     83 
 Deadman Hill            10220     .0      .0       *   30.6    26.6    115 
                                                -----                  -----
                Basin Index (%)                     *                   101 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   21.0    21.0    100 
 Divide Peak              8880     .0      .0       *   27.5    29.6     93 
 Elk River                8700     .0      .0       *   25.6    28.0     91 
 Little Snake River       8915     .2      .0       *   46.5    38.9    120 
 Old Battle              10000     -M      .0       *   47.0    46.6    101 
 Sage Creek Basin         7850     -M      .0       *   19.7    19.7    100 
 Sandstone RS             8150     .1      .0       *   19.9    25.3     79 
 Whiskey Park             8950     .2      .0       *   38.0    37.7    101 
                                                -----                  -----
                Basin Index (%)                     *                    99 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080     .0      .0       *   29.0    20.4    142 
 Blind Bull Sum           8650     -M      .0       *   42.3    27.0    157 
 East Rim Divide          7930     .1      .0       *   26.0    17.0    153 
 Elkhart Park G.S.        9400     .0      .0       *   29.6    20.5    144 
 Gros Ventre Summit       8750     .0      .0       *   29.8    19.7    151 
 Gunsight Pass            9820     .0      .0       *   32.9    21.5    153 
 Kendall R.S.             7740     .0      .0       *   35.6    19.7    181 
 Loomis Park              8240     -M      .0       *   38.4    23.8    161 
 New Fork Lake            8340     .0      .0       *   26.3    17.0    155 
 Pocket Creek             9360     .1      -M       *     -M      -M       *
 Snider Basin             8060     .0      .0       *   30.8    19.3    160 
 Spring Creek Divide      9000     .0      .0       *   47.7    31.9    150 
 Triple Peak              8500     .0      .0       *   48.8    34.5    141 
                                                -----                  -----
                Basin Index (%)                     *                   153 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .0      -M       *   20.7      -M       *
 Buck Pasture             9632     .0      -M       *   29.5      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   25.1      -M       *
 Hams Fork                7840     .2      .0       *   26.6    17.2    155 
 Hewinta                  9500     .0      .0       *   23.7    21.3    111 
 Hickerson Park           9122     .3      .0       *   19.3    16.9    114 
 Hole-in-Rock             9168     .0      .0       *   19.9    16.5    121 
 Indian Creek             9425     .1      .0       *   48.5    30.4    160 
 Kelley R.S.              8180     .1      .0       *   37.4    25.0    150 
 Spirit Lk               10235     .0      -M       *   26.0      -M       *
 Steel Creek Park        10158     -M      .0       *   28.1    24.8    113 
                                                -----                  -----
                Basin Index (%)                     *                   134 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   23.2      -M       *
 Bug Lake                 7987     .7      .0       *   40.5    26.4    153 
 Burts Miller Ranch       8000     .0      -M       *   12.8      -M       *
 Chalk Creek #1           9171     .0      .0       *   43.3    35.0    124 
 Hayden Fork              9130     .0      .0       *   34.1    29.4    116 
 Kelley R.S.              8180     .1      .0       *   37.4    25.0    150 
 Lily Lake                9133     .0      .0       *   26.8    24.8    108 
 Monte Cristo             8932     .3      .0       *   48.7    35.2    138 
 Salt River Summit        7760     .1      .0       *   33.3    23.3    143 
                                                -----                  -----
                Basin Index (%)                     *                   133 
----------------------------------------------------------------------------

 -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.