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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 11:48a, 10/20/18
Temperature 57.8°F
Wind 1.0 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 TUESDAY: MAY 16 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    8.4      .0       *   42.3    24.1    176 
 Black Bear               8170   44.9    35.8    125    60.1    44.1    136 
 Blind Bull Sum           8650     -M    21.8       *   39.2    22.9    171 
 Cottonwood Creek         7670   18.4     9.6    192    44.1    29.5    149 
 East Rim Divide          7930     .0     3.3      0    23.1    13.9    166 
 Grand Targhee            9260   54.7    44.6    123    51.8    36.7    141 
 Granite Creek            6770   10.0      .4   2500*   38.4    22.6    170 
 Grassy Lake              7265   25.8    21.3    121    61.5    41.3    149 
 Gros Ventre Summit       8750     -M     8.2       *     -M    15.8       *
 Gunsight Pass            9820   19.9    12.0    166    28.7    17.5    164 
 Lewis Lake Divide        7850   36.9    25.3    146    59.8    40.5    148 
 Phillips Bench           8200   31.9    21.5    148    50.8    32.5    156 
 Salt River Summit        7760    3.6     1.0    360*   31.9    19.6    163 
 Snake River Station      6920     .0      .0       *   39.2    26.1    150 
 Spring Creek Divide      9000   38.2    22.3    171    44.9    27.8    162 
 Thumb Divide             7980    5.1     4.3    119    30.6    22.4    137 
 Togwotee Pass            9580   31.9    24.1    132    43.3    29.2    148 
 Two Ocean Plateau        9240     -M    29.1       *     -M    32.3       *
 Willow Creek             8380     -M    19.3       *   57.7    40.3    143 
 Younts Peak              8350    3.2    13.3     24    33.5    19.2    174 
                                                -----                  -----
                Basin Index (%)                  139                    153 
 

MADISON-GALLATIN

 Black Bear               8170   44.9    35.8    125    60.1    44.1    136 
 Canyon                   7870    8.7     4.8    181    28.9    19.5    148 
 Madison Plateau          7750   19.2    16.5    116    40.2    30.9    130 
 West Yellowstone         6700     .0      .0       *   26.0    17.2    151 
 Whiskey Creek            6800    4.7     8.1     58    30.0    23.8    126 
                                                -----                  -----
                Basin Index (%)                  119                    137 
 

YELLOWSTONE

 Beartooth Lake           9360   32.5    22.5    144    31.9    23.8    134 
 Burnt Mtn                5880     .0      .0       *   18.7    18.8     99 
 Canyon                   7870    8.7     4.8    181    28.9    19.5    148 
 Cole Creek               7850   11.8    16.9     70    14.4    19.0     76 
 Evening Star             9200   34.7    25.1    138    49.6    32.7    152 
 Fisher Creek             9100     -M    33.9       *   52.9    37.7    140 
 Northeast Entrance       7350     .0      .0       *   23.2    15.1    154 
 Parker Peak              9400   34.7    21.3    163    40.1    22.0    182 
 Sylvan Lake              8420   16.6    16.7     99    42.1    27.1    155 
 Thumb Divide             7980    5.1     4.3    119    30.6    22.4    137 
 Two Ocean Plateau        9240     -M    29.1       *     -M    32.3       *
 White Mill               8700   33.5    24.1    139    40.0    28.4    141 
 Wolverine                7650     -M      .0       *   23.6    15.2    155 
                                                -----                  -----
                Basin Index (%)                  131                    141 
 

WIND RIVER

 Burroughs Creek          8750    8.7      -M       *   29.3      -M       *
 Castle Creek             8400     .0      -M       *   17.9      -M       *
 Cold Springs             9630    5.1      .0       *   22.5    14.1    160 
 Deer Park                9700   29.8    13.0    229    43.5    25.6    170 
 Hobbs Park              10100   29.7    14.6    203    34.8    18.7    186 
 Kirwin                   9550   18.9    10.1    187    29.3    15.5    189 
 Little Warm              9370   11.9     5.6    212    27.6    17.0    162 
 Owl Creek                8975     .0      .0       *   15.6     9.3    168 
 South Pass               9040   26.5     9.7    273    33.9    22.2    153 
 St. Lawrence Alt         8620     .0      .0       *   20.8    13.2    158 
 Togwotee Pass            9580   31.9    24.1    132    43.3    29.2    148 
 Townsend Creek           8700   11.5      .6   1917*   28.5    16.7    171 
                                                -----                  -----
                Basin Index (%)                  213                    165 
 

BIGHORN BASIN

 Bald Mtn.                9380   19.9    20.5     97    21.6    21.7    100 
 Bear Trap Meadow         8200     .0      .0       *   15.1    12.2    124 
 Bone Springs Div         9350   18.1    15.6    116    22.5    20.4    110 
 Grave Springs            8550    4.1     5.9     69    13.8    14.8     93 
 Kirwin                   9550   18.9    10.1    187    29.3    15.5    189 
 Marquette                8760   13.6      -M       *   23.8      -M       *
 Middle Powder            7760    4.2     8.3     51    15.2    15.9     96 
 Owl Creek                8975     .0      .0       *   15.6     9.3    168 
 Powder River Pass        9480    3.2     8.0     40    18.2    16.8    108 
 Shell Creek              9580   14.0    16.4     85    18.9    18.2    104 
 Timber Creek             7950     .0      .0       *   15.2    11.8    129 
                                                -----                  -----
                Basin Index (%)                   97                    118 
 

SHOSHONE RIVER

 Blackwater               9780   38.9    24.9    156    46.7    25.4    184 
 Evening Star             9200   34.7    25.1    138    49.6    32.7    152 
 Marquette                8760   13.6      -M       *   23.8      -M       *
 Sylvan Road              7120     .0      .0       *   32.4    19.9    163 
 Younts Peak              8350    3.2    13.3     24    33.5    19.2    174 
                                                -----                  -----
                Basin Index (%)                  121                    167 
 

POWDER RIVER

 Bear Trap Meadow         8200     .0      .0       *   15.1    12.2    124 
 Cloud Peak Reservoir     9860   16.9    16.1    105    26.6    19.1    139 
 Grave Springs            8550    4.1     5.9     69    13.8    14.8     93 
 Hansen Sawmill           8360    6.6      .0       *   18.7    12.5    150 
 Middle Powder            7760    4.2     8.3     51    15.2    15.9     96 
 Powder River Pass        9480    3.2     8.0     40    18.2    16.8    108 
 Soldier Park             8720    7.6      -M       *   20.8      -M       *
                                                -----                  -----
                Basin Index (%)                   91                    118 
 

TONGUE RIVER

 Big Goose                7990    8.1     8.2     99    20.3    16.7    122 
 Bone Springs Div         9350   18.1    15.6    116    22.5    20.4    110 
 Burgess Junction         7880    6.7    10.2     66    16.3    16.6     98 
 Dome Lake                8880   13.4     9.2    146    22.7    18.6    122 
 Little Goose             8870   10.9      -M       *   24.4      -M       *
 Sucker Creek             8880    9.7    10.8     90    19.2    19.8     97 
 Tie Creek                6870     .1      .0       *   20.2    16.9    120 
                                                -----                  -----
                Basin Index (%)                  104                    111 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .0       *   12.5    14.5     86 
                                                -----                  -----
                Basin Index (%)                     *                    86 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .0       *   13.2    16.3     81 
 North Rapid Creek        6130     .0      .0       *   11.3    14.2     80 
                                                -----                  -----
                Basin Index (%)                     *                    80 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   20.5    21.1     97    30.4    28.4    107 
 Blackhall Mtn            9820   28.5      -M       *   42.0      -M       *
 Columbine                9160     .0     7.5      0    32.4    30.3    107 
 Divide Peak              8880     .0     9.6      0    26.6    26.1    102 
 Joe Wright              10120   13.5    22.6     60    33.9    32.3    105 
 Laprele Creek            8375     .3      .0       *   16.0    16.5     97 
 Med Bow                 10500   35.7      -M       *   41.3      -M       *
 North French Creek      10130   21.7    31.8     68    34.3    33.2    103 
 Never Summer            10280   21.1    22.0     96    23.2      -M       *
 Old Battle              10000   35.3    34.5    102    43.6    41.6    105 
 Rawah                    9020     .1     1.2      8    20.8    18.8    111 
 Sage Creek Basin         7850     -M      .0       *   18.3    17.2    106 
 Sand Lake               10050   30.2    29.9    101    32.2    31.4    103 
 South Brush Creek        8440     .0     1.0      0*   17.0    19.7     86 
 Tower                   10500   37.8    49.5     76    52.0    47.3    110 
 Webber Springs           9250   11.9    15.6     76    37.5    31.8    118 
 Willow Creek Pass        9540   12.4    11.0    113    21.0    17.1    123 
 Zirkel                   9340   11.4    15.6     73    47.4    33.3    142 
                                                -----                  -----
                Basin Index (%)                   79                    109 
 

SWEETWATER

 Deer Park                9700   29.8    13.0    229    43.5    25.6    170 
 Larsen Creek             9000     .3     4.7      6    26.2      -M       *
 South Pass               9040   26.5     9.7    273    33.9    22.2    153 
                                                -----                  -----
                Basin Index (%)                  207                    162 
 

LOWER N. PLATTE

 Casper Mtn.              7900     .8     8.3     10    20.0    20.0    100 
 Laprele Creek            8375     .3      .0       *   16.0    16.5     97 
 Reno Hill                8400    1.2     7.2     17    20.2    21.0     96 
 Windy Peak               7900     .0      .0       *   15.4    14.3    108 
                                                -----                  -----
                Basin Index (%)                   15                    100 
 

LARAMIE RIVER

 Brooklyn Lake           10240   13.3    19.2     69    27.0    26.7    101 
 Cinnabar Park            9574    6.3    14.8     43    27.0    29.3     92 
 Crow Creek               8330     .0      .0       *   12.5    15.0     83 
 Deadman Hill            10220   15.0    18.2     82    25.3    22.5    112 
 Rawah                    9020     .1     1.2      8    20.8    18.8    111 
 Roach                    9700    8.6    13.5     64    25.8    24.1    107 
                                                -----                  -----
                Basin Index (%)                   65                    101 
 

S. PLATTE

 Black Mountain           8920     -M      -M       *   16.8      -M       *
 Crow Creek               8330     .0      .0       *   12.5    15.0     83 
 Deadman Hill            10220   15.0    18.2     82    25.3    22.5    112 
                                                -----                  -----
                Basin Index (%)                   82*                   101 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .0       *   19.7    18.4    107 
 Divide Peak              8880     .0     9.6      0    26.6    26.1    102 
 Elk River                8700     .1     2.2      5    23.2    24.3     95 
 Little Snake River       8915   12.0    17.3     69    43.8    35.0    125 
 Old Battle              10000   35.3    34.5    102    43.6    41.6    105 
 Sage Creek Basin         7850     -M      .0       *   18.3    17.2    106 
 Sandstone RS             8150     .0      .0       *   19.6    22.3     88 
 Whiskey Park             8950   15.4    24.2     64    35.4    33.6    105 
                                                -----                  -----
                Basin Index (%)                   72                    105 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   12.2     7.0    174    25.8    16.6    155 
 Blind Bull Sum           8650     -M    21.8       *   39.2    22.9    171 
 East Rim Divide          7930     .0     3.3      0    23.1    13.9    166 
 Elkhart Park G.S.        9400   12.3     8.0    154    26.9    16.5    163 
 Gros Ventre Summit       8750     -M     8.2       *     -M    15.8       *
 Gunsight Pass            9820   19.9    12.0    166    28.7    17.5    164 
 Kendall R.S.             7740     .0      .0       *   31.3    16.5    190 
 Loomis Park              8240   13.9     5.4    257    35.2    20.3    173 
 New Fork Lake            8340     .0      .7      0*   21.2    13.3    159 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060     .0     3.9      0    29.3    16.6    177 
 Spring Creek Divide      9000   38.2    22.3    171    44.9    27.8    162 
 Triple Peak              8500   24.2    12.0    202    44.8    29.9    150 
                                                -----                  -----
                Basin Index (%)                  162                    165 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869     .1      -M       *   19.1      -M       *
 Buck Pasture             9632    5.3      -M       *   27.7      -M       *
 EF Blacks Fork GS        9360     -M      -M       *   23.1      -M       *
 Hams Fork                7840     .0      .0       *   24.0    14.2    169 
 Hewinta                  9500     .0      .0       *   21.2    17.5    121 
 Hickerson Park           9122     .1      .0       *   15.0    13.2    114 
 Hole-in-Rock             9168     .0      .0       *   15.8    12.8    123 
 Indian Creek             9425   33.8    20.9    162    45.1    26.7    169 
 Kelley R.S.              8180    7.3     5.8    126    34.1    21.5    159 
 Spirit Lk               10235    3.6      -M       *   21.0      -M       *
 Steel Creek Park        10158   15.7    16.1     98    25.5    20.7    123 
                                                -----                  -----
                Basin Index (%)                  133*                   143 
 

UPPER BEAR RIVER

 Bear River RS            8777     .0      -M       *   21.5      -M       *
 Bug Lake                 7987   20.1     9.4    214    37.7    23.2    162 
 Burts Miller Ranch       8000     .0      -M       *   11.9      -M       *
 Chalk Creek #1           9171   23.5    18.7    126    41.2    30.5    135 
 Hayden Fork              9130     .1     2.1      5    32.5    25.5    127 
 Kelley R.S.              8180    7.3     5.8    126    34.1    21.5    159 
 Lily Lake                9133     .0      .7      0*   23.1    21.1    109 
 Monte Cristo             8932   27.2    18.4    148    44.8    31.3    143 
 Salt River Summit        7760    3.6     1.0    360*   31.9    19.6    163 
                                                -----                  -----
                Basin Index (%)                  146                    142 

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


 -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.