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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 10:23a, 8/18/18
Temperature 63.2°F
Wind 0.0 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 THURSDAY: MAY 18 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    8.3      .0       *   43.0    24.3    177 
 Black Bear               8170   45.6    34.8    131    61.3    44.4    138 
 Blind Bull Sum           8650     -M    21.0       *   39.3    23.1    170 
 Cottonwood Creek         7670   18.4     8.2    224    44.4    29.8    149 
 East Rim Divide          7930     .0     1.8      0    23.3    14.0    166 
 Grand Targhee            9260   54.9    43.4    126    52.5    36.7    143 
 Granite Creek            6770    8.7      .0       *   38.6    22.8    169 
 Grassy Lake              7265   25.2    19.5    129    62.2    41.7    149 
 Gros Ventre Summit       8750     -M     7.0       *     -M    16.0       *
 Gunsight Pass            9820   19.9    11.4    175    29.0    17.6    165 
 Lewis Lake Divide        7850   35.8    23.8    150    60.0    40.8    147 
 Phillips Bench           8200   31.6    20.5    154    51.3    32.7    157 
 Salt River Summit        7760    3.2      .0       *   32.1    19.8    162 
 Snake River Station      6920     .0      .0       *   39.5    26.3    150 
 Spring Creek Divide      9000   37.4    21.5    174    45.4    27.9    163 
 Thumb Divide             7980    4.5     2.8    161    30.9    22.6    137 
 Togwotee Pass            9580   32.2    23.5    137    44.0    29.5    149 
 Two Ocean Plateau        9240     -M    28.7       *     -M    32.6       *
 Willow Creek             8380     -M    18.2       *   59.3    40.6    146 
 Younts Peak              8350    2.7    12.5     22    33.5    19.3    174 
                                                -----                  -----
                Basin Index (%)                  147                    154 
 

MADISON-GALLATIN

 Black Bear               8170   45.6    34.8    131    61.3    44.4    138 
 Canyon                   7870    8.8     3.5    251    29.6    19.7    150 
 Madison Plateau          7750   19.1    15.3    125    41.0    31.3    131 
 West Yellowstone         6700     .0      .0       *   26.5    17.4    152 
 Whiskey Creek            6800    4.3     6.9     62    30.0    24.1    124 
                                                -----                  -----
                Basin Index (%)                  129                    138 
 

YELLOWSTONE

 Beartooth Lake           9360   33.8    22.1    153    32.2    24.0    134 
 Burnt Mtn                5880    2.3      .0       *   21.8    18.9    115 
 Canyon                   7870    8.8     3.5    251    29.6    19.7    150 
 Cole Creek               7850   14.4    16.7     86    17.1    19.3     89 
 Evening Star             9200   34.9    24.5    142    49.9    33.1    151 
 Fisher Creek             9100   50.0    33.3    150    53.1    38.1    139 
 Northeast Entrance       7350     .2      .0       *   23.8    15.3    156 
 Parker Peak              9400   34.8    20.6    169    41.0    22.2    185 
 Sylvan Lake              8420   16.5    15.9    104    43.2    27.3    158 
 Thumb Divide             7980    4.5     2.8    161    30.9    22.6    137 
 Two Ocean Plateau        9240     -M    28.7       *     -M    32.6       *
 White Mill               8700   33.6    23.2    145    40.2    28.7    140 
 Wolverine                7650     .0      .0       *   24.5    15.4    159 
                                                -----                  -----
                Basin Index (%)                  144                    143 
 

WIND RIVER

 Burroughs Creek          8750    8.5      -M       *   29.5      -M       *
 Castle Creek             8400     .0      -M       *   18.2      -M       *
 Cold Springs             9630    4.9      .0       *   22.7    14.3    159 
 Deer Park                9700   30.4    11.8    258    44.6    25.9    172 
 Hobbs Park              10100   29.6    14.0    211    34.8    19.1    182 
 Kirwin                   9550   18.9     9.3    203    29.5    15.7    188 
 Little Warm              9370   11.4     4.2    271    27.6    17.3    160 
 Owl Creek                8975     .0      .0       *   15.8     9.5    166 
 South Pass               9040   27.2     8.5    320    34.1    22.3    153 
 St. Lawrence Alt         8620     -M      .0       *   20.9    13.4    156 
 Togwotee Pass            9580   32.2    23.5    137    44.0    29.5    149 
 Townsend Creek           8700   11.5      .2   5750*   28.6    17.0    168 
                                                -----                  -----
                Basin Index (%)                  232                    164 
 

BIGHORN BASIN

 Bald Mtn.                9380   20.5    20.0    102    22.6    21.9    103 
 Bear Trap Meadow         8200     .5      .0       *   16.2    12.5    130 
 Bone Springs Div         9350   17.8    15.0    119    22.7    20.7    110 
 Grave Springs            8550    4.4     4.4    100    14.1    14.9     95 
 Kirwin                   9550   18.9     9.3    203    29.5    15.7    188 
 Marquette                8760   13.8      -M       *   24.2      -M       *
 Middle Powder            7760    4.0     7.0     57    15.1    16.2     93 
 Owl Creek                8975     .0      .0       *   15.8     9.5    166 
 Powder River Pass        9480    3.6     6.8     53    18.5    17.1    108 
 Shell Creek              9580   14.0    15.8     89    19.0    18.4    103 
 Timber Creek             7950     .7      .0       *   16.1    12.0    134 
                                                -----                  -----
                Basin Index (%)                  108                    119 
 

SHOSHONE RIVER

 Blackwater               9780   39.6    24.8    160    47.5    25.7    185 
 Evening Star             9200   34.9    24.5    142    49.9    33.1    151 
 Marquette                8760   13.8      -M       *   24.2      -M       *
 Sylvan Road              7120     .0      .0       *   33.2    20.1    165 
 Younts Peak              8350    2.7    12.5     22    33.5    19.3    174 
                                                -----                  -----
                Basin Index (%)                  125                    167 
 

POWDER RIVER

 Bear Trap Meadow         8200     .5      .0       *   16.2    12.5    130 
 Cloud Peak Reservoir     9860   17.7    15.5    114    27.4    19.4    141 
 Grave Springs            8550    4.4     4.4    100    14.1    14.9     95 
 Hansen Sawmill           8360    6.9      .0       *   20.4    12.7    161 
 Middle Powder            7760    4.0     7.0     57    15.1    16.2     93 
 Powder River Pass        9480    3.6     6.8     53    18.5    17.1    108 
 Soldier Park             8720    8.4      -M       *   22.0      -M       *
                                                -----                  -----
                Basin Index (%)                  110                    120 
 

TONGUE RIVER

 Big Goose                7990    8.3     6.6    126    20.7    17.1    121 
 Bone Springs Div         9350   17.8    15.0    119    22.7    20.7    110 
 Burgess Junction         7880    6.4     9.3     69    16.4    16.8     98 
 Dome Lake                8880   13.8     7.8    177    23.9    18.9    126 
 Little Goose             8870   11.2      -M       *   25.1      -M       *
 Sucker Creek             8880   10.4     9.7    107    20.3    20.0    102 
 Tie Creek                6870     -M      .0       *     -M    17.2       *
                                                -----                  -----
                Basin Index (%)                  117                    111 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.9    14.7     88 
                                                -----                  -----
                Basin Index (%)                     *                    88 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   13.6    16.5     82 
 North Rapid Creek        6130     .0      .0       *   11.8    14.3     83 
                                                -----                  -----
                Basin Index (%)                     *                    82 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   19.9    19.8    101    30.6    28.4    108 
 Blackhall Mtn            9820   27.5      -M       *   42.5      -M       *
 Columbine                9160     .0     5.2      0    32.5    30.5    107 
 Divide Peak              8880     .0     7.7      0    26.4    26.3    100 
 Joe Wright              10120   13.1    21.9     60    34.2    32.6    105 
 Laprele Creek            8375     .2      .0       *   15.7    16.8     93 
 Med Bow                 10500   34.7      -M       *   41.7      -M       *
 North French Creek      10130   20.9    30.8     68    34.6    33.5    103 
 Never Summer            10280   20.8    21.3     98    23.5      -M       *
 Old Battle              10000   35.5    33.4    106    43.4    41.9    104 
 Rawah                    9020     .4      .7     57*   20.9    18.9    111 
 Sage Creek Basin         7850     -M      .0       *   18.5    17.2    108 
 Sand Lake               10050   29.2    28.8    101    32.3    31.7    102 
 South Brush Creek        8440     .0      .4      0*   16.1    19.9     81 
 Tower                   10500   37.5    48.6     77    52.0    47.6    109 
 Webber Springs           9250   11.0    13.9     79    37.8    31.9    118 
 Willow Creek Pass        9540   11.4    10.2    112    21.2    17.2    123 
 Zirkel                   9340    9.8    13.0     75    47.7    33.3    143 
                                                -----                  -----
                Basin Index (%)                   82                    108 
 

SWEETWATER

 Deer Park                9700   30.4    11.8    258    44.6    25.9    172 
 Larsen Creek             9000     .5     4.2     12    27.0      -M       *
 South Pass               9040   27.2     8.5    320    34.1    22.3    153 
                                                -----                  -----
                Basin Index (%)                  237                    163 
 

LOWER N. PLATTE

 Casper Mtn.              7900     .3     6.4      5    19.8    20.3     98 
 Laprele Creek            8375     .2      .0       *   15.7    16.8     93 
 Reno Hill                8400     .5     5.6      9    19.7    21.2     93 
 Windy Peak               7900     .0      .0       *   15.3    14.7    104 
                                                -----                  -----
                Basin Index (%)                    8                     97 
 

LARAMIE RIVER

 Brooklyn Lake           10240   11.7    18.0     65    26.9    27.0    100 
 Cinnabar Park            9574    5.1    13.8     37    27.4    29.5     93 
 Crow Creek               8330     .2      .0       *   13.0    15.0     87 
 Deadman Hill            10220   14.1    17.6     80    26.0    22.8    114 
 Rawah                    9020     .4      .7     57*   20.9    18.9    111 
 Roach                    9700    7.7    12.6     61    26.2    24.5    107 
                                                -----                  -----
                Basin Index (%)                   63                    102 
 

S. PLATTE

 Black Mountain           8920     .6      -M       *   17.7      -M       *
 Crow Creek               8330     .2      .0       *   13.0    15.0     87 
 Deadman Hill            10220   14.1    17.6     80    26.0    22.8    114 
                                                -----                  -----
                Basin Index (%)                   81*                   103 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.8    18.5    107 
 Divide Peak              8880     .0     7.7      0    26.4    26.3    100 
 Elk River                8700     .4      .3    133*   23.8    24.5     97 
 Little Snake River       8915   11.4    15.5     74    44.0    35.0    126 
 Old Battle              10000   35.5    33.4    106    43.4    41.9    104 
 Sage Creek Basin         7850     -M      .0       *   18.5    17.2    108 
 Sandstone RS             8150     .1      .0       *   19.1    22.4     85 
 Whiskey Park             8950   16.3    23.2     70    35.9    33.7    107 
                                                -----                  -----
                Basin Index (%)                   80                    105 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   13.0     5.2    250    26.7    16.8    159 
 Blind Bull Sum           8650     -M    21.0       *   39.3    23.1    170 
 East Rim Divide          7930     .0     1.8      0    23.3    14.0    166 
 Elkhart Park G.S.        9400   12.5     6.9    181    27.4    16.6    165 
 Gros Ventre Summit       8750     -M     7.0       *     -M    16.0       *
 Gunsight Pass            9820   19.9    11.4    175    29.0    17.6    165 
 Kendall R.S.             7740     .0      .0       *   31.7    16.7    190 
 Loomis Park              8240   14.0     4.0    350    35.4    20.4    174 
 New Fork Lake            8340     .0      .0       *   21.2    13.5    157 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     -M     1.7       *   29.2    16.7    175 
 Spring Creek Divide      9000   37.4    21.5    174    45.4    27.9    163 
 Triple Peak              8500   23.5    10.3    228    45.0    30.1    150 
                                                -----                  -----
                Basin Index (%)                  197                    166 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .0      -M       *   19.4      -M       *
 Buck Pasture             9632    4.8      -M       *   28.1      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.4      -M       *
 Hams Fork                7840     .0      .0       *   24.3    14.3    170 
 Hewinta                  9500     .0      .0       *   21.4    17.6    122 
 Hickerson Park           9122     .4      .0       *   15.5    13.3    117 
 Hole-in-Rock             9168     .0      .0       *   16.0    12.9    124 
 Indian Creek             9425   34.3    20.0    172    45.8    26.9    170 
 Kelley R.S.              8180    7.4     4.3    172    34.7    21.6    161 
 Spirit Lk               10235    3.6      -M       *   21.6      -M       *
 Steel Creek Park        10158   15.8    15.5    102    25.9    20.9    124 
                                                -----                  -----
                Basin Index (%)                  145*                   144 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.8      -M       *
 Bug Lake                 7987   19.6     7.4    265    38.4    23.3    165 
 Burts Miller Ranch       8000     .0      -M       *   12.0      -M       *
 Chalk Creek #1           9171   23.6    17.2    137    42.0    30.7    137 
 Hayden Fork              9130     .3      .4     75*   33.0    25.6    129 
 Kelley R.S.              8180    7.4     4.3    172    34.7    21.6    161 
 Lily Lake                9133     .0      .0       *   23.4    21.2    110 
 Monte Cristo             8932   27.7    16.7    166    46.0    31.4    146 
 Salt River Summit        7760    3.2      .0       *   32.1    19.8    162 
                                                -----                  -----
                Basin Index (%)                  178*                   144 

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


 -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.