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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 6:38p, 5/25/18
Temperature 71.5°F
Wind 3.0 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 MONDAY: MAY 2 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    5.3     8.9     60    21.2    22.9     93 
 Black Bear               8170   30.0    37.4     80    37.1    41.8     89 
 Blind Bull Sum           8650   25.0    23.0    109    17.7    21.4     83 
 Cottonwood Creek         7670   17.0    15.0    113    29.0    27.6    105 
 East Rim Divide          7930     .0     8.2      0    12.5    13.0     96 
 Grand Targhee            9260   41.9    45.1     93    34.5    34.8     99 
 Granite Creek            6770    3.7     8.1     46    18.8    21.4     88 
 Grassy Lake              7265   19.8    28.7     69    36.9    39.4     94 
 Gros Ventre Summit       8750    9.2    11.5     80    12.0    14.7     82 
 Gunsight Pass            9820   14.8    12.3    120    16.3    16.1    101 
 Lewis Lake Divide        7850   20.1    29.9     67    33.2    38.6     86 
 Phillips Bench           8200   18.4    25.1     73    27.8    30.7     91 
 Salt River Summit        7760    5.3     7.8     68    17.3    18.4     94 
 Snake River Station      6920    2.7     6.8     40    23.4    24.8     94 
 Spring Creek Divide      9000   25.4    24.3    105    25.4    26.3     97 
 Thumb Divide             7980    2.9    11.9     24    15.9    21.0     76 
 Togwotee Pass            9580   22.9    24.8     92    27.0    27.4     99 
 Two Ocean Plateau        9240   26.1    29.8     88    26.1    30.2     86 
 Willow Creek             8380   22.1    22.6     98    36.5    37.7     97 
 Younts Peak              8350    3.8    15.6     24    14.6    17.7     82 
                                                -----                  -----
                Basin Index (%)                   80                     92 
 

MADISON-GALLATIN

 Black Bear               8170   30.0    37.4     80    37.1    41.8     89 
 Canyon                   7870    5.4    10.0     54    14.2    18.1     78 
 Madison Plateau          7750   16.6    21.2     78    24.4    29.0     84 
 West Yellowstone         6700     .0     1.2      0    14.7    16.0     92 
 Whiskey Creek            6800    8.0    14.2     56    17.9    22.4     80 
                                                -----                  -----
                Basin Index (%)                   71                     85 
 

YELLOWSTONE

 Beartooth Lake           9360   18.4    22.7     81    19.5    22.0     89 
 Burnt Mtn                5880     .0      .0       *   13.8    16.0     86 
 Canyon                   7870    5.4    10.0     54    14.2    18.1     78 
 Cole Creek               7850   12.1    16.6     73    15.3    16.5     93 
 Evening Star             9200   24.9    24.8    100    30.8    30.5    101 
 Fisher Creek             9100   27.7    32.6     85    27.3    35.2     78 
 Northeast Entrance       7350     .0     2.4      0    12.2    13.8     88 
 Parker Peak              9400   19.8    21.2     93    22.8    20.1    113 
 Sylvan Lake              8420   12.7    19.5     65    25.2    25.2    100 
 Thumb Divide             7980    2.9    11.9     24    15.9    21.0     76 
 Two Ocean Plateau        9240   26.1    29.8     88    26.1    30.2     86 
 White Mill               8700   20.9    23.8     88    22.7    26.4     86 
 Wolverine                7650     .0     1.9      0    13.3    13.8     96 
                                                -----                  -----
                Basin Index (%)                   79                     90 
 

WIND RIVER

 Burroughs Creek          8750    6.9      -M       *   14.9      -M       *
 Castle Creek             8400     .0      -M       *    8.9      -M       *
 Cold Springs             9630    7.4     1.2    617    12.8    12.5    102 
 Deer Park                9700   19.5    15.8    123    22.8    23.5     97 
 Hobbs Park              10100   20.8    16.0    130    21.5    16.8    128 
 Kirwin                   9550   12.8    10.5    122    16.2    13.9    117 
 Little Warm              9370    8.1     8.6     94    12.7    15.4     82 
 Owl Creek                8975    3.1      .8    388     8.8     8.0    110 
 South Pass               9040   17.0    14.7    116    17.7    20.4     87 
 St. Lawrence Alt         8620    5.9     2.1    281    13.6    11.6    117 
 Togwotee Pass            9580   22.9    24.8     92    27.0    27.4     99 
 Townsend Creek           8700   12.9     7.3    177    18.2    15.0    121 
                                                -----                  -----
                Basin Index (%)                  128                    104 
 

BIGHORN BASIN

 Bald Mtn.                9380   17.2    20.5     84    14.9    19.8     75 
 Bear Trap Meadow         8200    3.6      .7    514     9.7    10.7     91 
 Bone Springs Div         9350   14.6    16.5     88    13.9    18.3     76 
 Grave Springs            8550    9.3     9.5     98    10.1    13.0     78 
 Kirwin                   9550   12.8    10.5    122    16.2    13.9    117 
 Marquette                8760    8.5      -M       *   14.1      -M       *
 Middle Powder            7760   13.2    11.5    115    12.0    14.2     85 
 Owl Creek                8975    3.1      .8    388     8.8     8.0    110 
 Powder River Pass        9480    8.1     9.2     88    11.4    15.2     75 
 Shell Creek              9580   14.2    15.9     89    13.0    16.4     79 
 Timber Creek             7950    5.9     3.0    197    14.2    10.1    141 
                                                -----                  -----
                Basin Index (%)                  104                     89 
 

SHOSHONE RIVER

 Blackwater               9780   24.2    25.5     95    26.9    23.6    114 
 Evening Star             9200   24.9    24.8    100    30.8    30.5    101 
 Marquette                8760    8.5      -M       *   14.1      -M       *
 Sylvan Road              7120     .0     5.2      0    16.3    18.6     88 
 Younts Peak              8350    3.8    15.6     24    14.6    17.7     82 
                                                -----                  -----
                Basin Index (%)                   74                     98 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.6      .7    514     9.7    10.7     91 
 Cloud Peak Reservoir     9860   14.0    16.4     85    17.5    16.8    104 
 Grave Springs            8550    9.3     9.5     98    10.1    13.0     78 
 Hansen Sawmill           8360    4.6     2.1    219    10.8    11.0     98 
 Middle Powder            7760   13.2    11.5    115    12.0    14.2     85 
 Powder River Pass        9480    8.1     9.2     88    11.4    15.2     75 
 Soldier Park             8720    1.7      -M       *   10.8      -M       *
                                                -----                  -----
                Basin Index (%)                  107                     88 
 

TONGUE RIVER

 Big Goose                7990   10.1     9.2    110    13.8    14.2     97 
 Bone Springs Div         9350   14.6    16.5     88    13.9    18.3     76 
 Burgess Junction         7880   11.6    12.0     97    13.3    14.9     89 
 Dome Lake                8880   11.1    11.4     97    14.8    16.6     89 
 Little Goose             8870   12.0      -M       *   16.3      -M       *
 Sucker Creek             8880   11.4    12.0     95    15.4    17.5     88 
 Tie Creek                6870     .4     2.6     15    12.4    14.6     85 
                                                -----                  -----
                Basin Index (%)                   93                     87 
 

BELLE FOURCHE

 Cole Canyon              5910     .0      .4      0*   11.3    12.1     93 
                                                -----                  -----
                Basin Index (%)                    0*                    93 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0      .3      0*   12.1    14.5     83 
 North Rapid Creek        6130     .0      .7      0     9.6    12.4     77 
                                                -----                  -----
                Basin Index (%)                    0                     81 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   27.6    22.3    124    29.2    26.3    111 
 Blackhall Mtn            9820   36.1      -M       *   36.1      -M       *
 Columbine                9160   21.0    17.8    118    29.2    28.7    102 
 Divide Peak              8880   21.2    18.0    118    30.3    24.4    124 
 Joe Wright              10120     -M    23.1       *     -M    30.0       *
 Laprele Creek            8375    9.4     5.8    162    15.6    15.1    103 
 Med Bow                 10500   38.9      -M       *   37.9      -M       *
 North French Creek      10130   32.9    32.8    100    33.2    30.8    108 
 Never Summer            10280   23.3    21.8    107    20.6      -M       *
 Old Battle              10000   37.8    34.7    109    36.0    39.3     92 
 Rawah                    9020   13.1     5.6    234    22.0    17.3    127 
 Sage Creek Basin         7850   12.3     1.1   1118*   16.1    16.2     99 
 Sand Lake               10050   34.1    31.4    109    33.2    29.2    114 
 South Brush Creek        8440    9.6     8.8    109    18.9    17.9    106 
 Tower                   10500   46.0    50.2     92    44.5    44.9     99 
 Webber Springs           9250   24.4    21.5    113    31.3    30.1    104 
 Willow Creek Pass        9540   18.4    14.3    129    18.9    15.8    120 
 Zirkel                   9340   26.3    20.9    126    35.3    31.1    114 
                                                -----                  -----
                Basin Index (%)                  116                    107 
 

SWEETWATER

 Deer Park                9700   19.5    15.8    123    22.8    23.5     97 
 Larsen Creek             9000    5.9     8.9     66    16.0      -M       *
 South Pass               9040   17.0    14.7    116    17.7    20.4     87 
                                                -----                  -----
                Basin Index (%)                  108                     92 
 

LOWER N. PLATTE

 Casper Mtn.              7900   20.6    13.0    158    20.3    18.1    112 
 Laprele Creek            8375    9.4     5.8    162    15.6    15.1    103 
 Reno Hill                8400   19.2    12.4    155    24.1    19.0    127 
 Windy Peak               7900   10.2     3.7    276    15.7    13.0    121 
                                                -----                  -----
                Basin Index (%)                  170                    116 
 

LARAMIE RIVER

 Brooklyn Lake           10240   26.4    23.3    113    28.7    24.8    116 
 Cinnabar Park            9574   23.0    19.2    120    28.4    27.0    105 
 Crow Creek               8330    8.1      .0       *   20.0    13.5    148 
 Deadman Hill            10220   24.0    19.1    126    24.4    20.8    117 
 Rawah                    9020   13.1     5.6    234    22.0    17.3    127 
 Roach                    9700   22.8    17.1    133    27.3    22.4    122 
                                                -----                  -----
                Basin Index (%)                  139                    120 
 

S. PLATTE

 Black Mountain           8920     -M      -M       *   21.7      -M       *
 Crow Creek               8330    8.1      .0       *   20.0    13.5    148 
 Deadman Hill            10220   24.0    19.1    126    24.4    20.8    117 
                                                -----                  -----
                Basin Index (%)                  168*                   129 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    4.6      .0       *   19.5    17.2    113 
 Divide Peak              8880   21.2    18.0    118    30.3    24.4    124 
 Elk River                8700   14.0    12.9    109    22.2    22.8     97 
 Little Snake River       8915   25.5    22.1    115    38.1    32.9    116 
 Old Battle              10000   37.8    34.7    109    36.0    39.3     92 
 Sage Creek Basin         7850   12.3     1.1   1118*   16.1    16.2     99 
 Sandstone RS             8150    7.0     5.6    125    15.9    20.8     76 
 Whiskey Park             8950   29.8    26.6    112    34.3    31.6    109 
                                                -----                  -----
                Basin Index (%)                  126                    104 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   11.7    10.2    115    14.5    15.2     95 
 Blind Bull Sum           8650   25.0    23.0    109    17.7    21.4     83 
 East Rim Divide          7930     .0     8.2      0    12.5    13.0     96 
 Elkhart Park G.S.        9400    9.3    11.1     84    13.5    15.1     89 
 Gros Ventre Summit       8750    9.2    11.5     80    12.0    14.7     82 
 Gunsight Pass            9820   14.8    12.3    120    16.3    16.1    101 
 Kendall R.S.             7740     -M     3.8       *   13.0    15.6     83 
 Loomis Park              8240    7.6    10.8     70    17.8    19.0     94 
 New Fork Lake            8340    1.6     6.3     25    12.1    12.2     99 
 Pocket Creek             9360    9.3      -M       *   11.9      -M       *
 Snider Basin             8060    4.5     9.1     49    15.0    15.7     96 
 Spring Creek Divide      9000   25.4    24.3    105    25.4    26.3     97 
 Triple Peak              8500   19.0    17.1    111    28.9    28.0    103 
                                                -----                  -----
                Basin Index (%)                   89                     94 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    8.0      -M       *   14.8      -M       *
 Buck Pasture             9700   12.2      -M       *   20.3      -M       *
 EF Blacks Fork GS        9360    8.1      -M       *   14.3      -M       *
 Hams Fork                7840    3.1     2.5    124    12.1    13.2     92 
 Hewinta                  9519    9.3     4.6    202    16.7    16.3    102 
 Hickerson Park           9145   10.5     3.9    269    16.1    12.1    133 
 Hole-in-Rock             9150    5.6     2.2    255    15.6    11.6    134 
 Indian Creek             9425   21.1    22.8     93    20.2    25.1     80 
 Kelley R.S.              8180    9.7    11.2     87    17.2    20.2     85 
 Spirit Lk               10235   19.6      -M       *   22.7      -M       *
 Steel Creek Park        10200   20.1    17.2    117    22.9    19.2    119 
                                                -----                  -----
                Basin Index (%)                  123                    103 
 

UPPER BEAR RIVER

 Bear River RS            8777     .7      -M       *   14.4      -M       *
 Bug Lake                 7950   12.8    14.7     87    21.1    21.8     97 
 Burts Miller Ranch       8000     .0      -M       *    7.2      -M       *
 Chalk Creek #1           8993   17.7    24.0     74    25.3    28.6     88 
 Hayden Fork              9212    7.3     9.1     80    22.8    23.9     95 
 Kelley R.S.              8180    9.7    11.2     87    17.2    20.2     85 
 Lily Lake                9156   10.4    10.0    104    16.7    19.6     85 
 Monte Cristo             8960   25.2    26.2     96    31.2    29.3    106 
 Salt River Summit        7760    5.3     7.8     68    17.3    18.4     94 
                                                -----                  -----
                Basin Index (%)                   86                     94 

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


 -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.