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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 SATURDAY: APRIL 30 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    6.4     9.7     66    21.2    22.6     94 
 Black Bear               8170   30.3    37.4     81    37.2    41.6     89 
 Blind Bull Sum           8650   25.2    23.4    108    17.5    21.2     83 
 Cottonwood Creek         7670   17.5    15.7    111    29.0    27.3    106 
 East Rim Divide          7930     .0     8.3      0    12.5    12.8     98 
 Grand Targhee            9260   42.0    44.4     95    34.5    34.4    100 
 Granite Creek            6770    5.1     8.5     60    18.8    21.3     88 
 Grassy Lake              7265   20.8    29.4     71    36.9    39.1     94 
 Gros Ventre Summit       8750    9.7    11.7     83    12.0    14.5     83 
 Gunsight Pass            9820   13.9    12.8    109    16.3    16.0    102 
 Lewis Lake Divide        7850   20.7    30.3     68    33.3    38.4     87 
 Phillips Bench           8200   18.9    25.6     74    27.8    30.5     91 
 Salt River Summit        7760    6.2     8.0     78    17.2    18.3     94 
 Snake River Station      6920    4.5     7.9     57    23.5    24.6     96 
 Spring Creek Divide      9000   25.4    24.3    105    25.3    26.1     97 
 Thumb Divide             7980    4.3    12.9     33    15.9    20.8     76 
 Togwotee Pass            9580   22.2    24.7     90    26.8    27.1     99 
 Two Ocean Plateau        9240   26.3    29.7     89    26.1    29.9     87 
 Willow Creek             8380   22.4    23.5     95    36.4    37.4     97 
 Younts Peak              8350    5.1    15.4     33    14.5    17.5     83 
                                                -----                  -----
                Basin Index (%)                   81                     93 
 

MADISON-GALLATIN

 Black Bear               8170   30.3    37.4     81    37.2    41.6     89 
 Canyon                   7870    6.0    10.8     56    14.1    17.9     79 
 Madison Plateau          7750   17.4    21.6     81    24.5    28.8     85 
 West Yellowstone         6700     .1     2.5      4    14.7    15.9     92 
 Whiskey Creek            6800    8.6    14.9     58    17.9    22.2     81 
                                                -----                  -----
                Basin Index (%)                   72                     86 
 

YELLOWSTONE

 Beartooth Lake           9360   18.5    22.9     81    19.5    21.8     89 
 Burnt Mtn                5880     .1      .0       *   13.6    15.5     88 
 Canyon                   7870    6.0    10.8     56    14.1    17.9     79 
 Cole Creek               7850   11.8    16.4     72      -M    16.2       *
 Evening Star             9200   24.8    24.9    100    30.7    30.2    102 
 Fisher Creek             9100   27.6    32.8     84    27.2    35.0     78 
 Northeast Entrance       7350     .0     3.5      0    12.2    13.7     89 
 Parker Peak              9400   20.0    21.4     93    22.8    19.9    115 
 Sylvan Lake              8420   13.2    20.1     66    25.2    24.9    101 
 Thumb Divide             7980    4.3    12.9     33    15.9    20.8     76 
 Two Ocean Plateau        9240   26.3    29.7     89    26.1    29.9     87 
 White Mill               8700   20.8    23.8     87    22.6    26.1     87 
 Wolverine                7650     .0     3.1      0    13.0    13.7     95 
                                                -----                  -----
                Basin Index (%)                   78                     90 
 

WIND RIVER

 Burroughs Creek          8750    6.7      -M       *   14.6      -M       *
 Castle Creek             8400     .4      -M       *    8.9      -M       *
 Cold Springs             9630    7.0     1.4    500    12.4    12.4    100 
 Deer Park                9700   18.9    16.1    117    22.2    23.2     96 
 Hobbs Park              10100   20.0    16.0    125    20.7    16.5    125 
 Kirwin                   9550   12.8    10.4    123    16.1    13.6    118 
 Little Warm              9370    7.8     8.8     89    12.7    15.3     83 
 Owl Creek                8975    2.9     1.2    242     8.5     7.8    109 
 South Pass               9040   16.3    15.0    109    16.7    20.2     83 
 St. Lawrence Alt         8620    5.2     3.0    173    12.9    11.4    113 
 Togwotee Pass            9580   22.2    24.7     90    26.8    27.1     99 
 Townsend Creek           8700   12.2     7.8    156    17.4    14.8    118 
                                                -----                  -----
                Basin Index (%)                  120                    103 
 

BIGHORN BASIN

 Bald Mtn.                9380   17.1    20.5     83    14.9    19.5     76 
 Bear Trap Meadow         8200    3.7     1.1    336     9.6    10.4     92 
 Bone Springs Div         9350   14.7    16.6     89    14.0    18.0     78 
 Grave Springs            8550    9.1     9.4     97     9.9    12.6     79 
 Kirwin                   9550   12.8    10.4    123    16.1    13.6    118 
 Marquette                8760    8.4      -M       *   14.0      -M       *
 Middle Powder            7760   13.1    11.8    111    11.9    14.0     85 
 Owl Creek                8975    2.9     1.2    242     8.5     7.8    109 
 Powder River Pass        9480    8.1     9.6     84    11.3    14.9     76 
 Shell Creek              9580   14.2    16.0     89    12.9    16.1     80 
 Timber Creek             7950    5.6     3.2    175    14.0     9.8    143 
                                                -----                  -----
                Basin Index (%)                  102                     90 
 

SHOSHONE RIVER

 Blackwater               9780   24.1    25.2     96    26.9    23.3    115 
 Evening Star             9200   24.8    24.9    100    30.7    30.2    102 
 Marquette                8760    8.4      -M       *   14.0      -M       *
 Sylvan Road              7120     .0     6.3      0    16.3    18.5     88 
 Younts Peak              8350    5.1    15.4     33    14.5    17.5     83 
                                                -----                  -----
                Basin Index (%)                   75                     99 
 

POWDER RIVER

 Bear Trap Meadow         8200    3.7     1.1    336     9.6    10.4     92 
 Cloud Peak Reservoir     9860   14.0    16.5     85    17.4    16.4    106 
 Grave Springs            8550    9.1     9.4     97     9.9    12.6     79 
 Hansen Sawmill           8360    4.6     2.9    159    10.7    10.7    100 
 Middle Powder            7760   13.1    11.8    111    11.9    14.0     85 
 Powder River Pass        9480    8.1     9.6     84    11.3    14.9     76 
 Soldier Park             8720    1.7      -M       *   10.8      -M       *
                                                -----                  -----
                Basin Index (%)                  103                     90 
 

TONGUE RIVER

 Big Goose                7990   10.2     9.2    111    13.6    13.8     99 
 Bone Springs Div         9350   14.7    16.6     89    14.0    18.0     78 
 Burgess Junction         7880   11.6    12.1     96    13.3    14.6     91 
 Dome Lake                8880   11.1    11.5     97    14.7    16.2     91 
 Little Goose             8870   11.9      -M       *   16.2      -M       *
 Sucker Creek             8880   11.5    12.3     93    15.5    17.1     91 
 Tie Creek                6870     .6     2.7     22    12.3    14.1     87 
                                                -----                  -----
                Basin Index (%)                   93                     89 
 

BELLE FOURCHE

 Cole Canyon              5910     .8      .3    267*   11.3    11.5     98 
                                                -----                  -----
                Basin Index (%)                  267*                    98 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .3     1.3     23    12.1    14.1     86 
 North Rapid Creek        6130     .0     1.3      0     9.6    12.0     80 
                                                -----                  -----
                Basin Index (%)                   12                     83 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   27.5    22.3    123    29.0    26.0    112 
 Blackhall Mtn            9820   35.8      -M       *   35.9      -M       *
 Columbine                9160   20.9    18.6    112    29.4    28.4    104 
 Divide Peak              8880   20.6    18.0    114    30.1    24.1    125 
 Joe Wright              10120     -M    23.4       *     -M    29.6       *
 Laprele Creek            8375    8.5     6.4    133    14.5    14.9     97 
 Med Bow                 10500   38.8      -M       *   37.6      -M       *
 North French Creek      10130   32.6    32.9     99    33.0    30.5    108 
 Never Summer            10280   23.2    21.7    107    20.7      -M       *
 Old Battle              10000   37.5    34.7    108    35.1    39.0     90 
 Rawah                    9020   12.5     6.5    192    22.1    17.1    129 
 Sage Creek Basin         7850   11.7     1.1   1064*   16.0    16.1     99 
 Sand Lake               10050   33.6    31.3    107    32.6    28.9    113 
 South Brush Creek        8440    9.6     9.6    100    18.8    17.7    106 
 Tower                   10500   46.1    49.9     92    44.0    44.5     99 
 Webber Springs           9250   24.0    21.9    110    31.0    29.8    104 
 Willow Creek Pass        9540   18.2    14.1    129    18.8    15.6    121 
 Zirkel                   9340   26.3    21.2    124    35.2    30.8    114 
                                                -----                  -----
                Basin Index (%)                  114                    107 
 

SWEETWATER

 Deer Park                9700   18.9    16.1    117    22.2    23.2     96 
 Larsen Creek             9000    6.4     9.3     69    16.0      -M       *
 South Pass               9040   16.3    15.0    109    16.7    20.2     83 
                                                -----                  -----
                Basin Index (%)                  103                     90 
 

LOWER N. PLATTE

 Casper Mtn.              7900   20.0    13.7    146    19.7    17.8    111 
 Laprele Creek            8375    8.5     6.4    133    14.5    14.9     97 
 Reno Hill                8400   18.5    12.8    145    23.4    18.7    125 
 Windy Peak               7900    9.0     4.4    205    14.5    12.9    112 
                                                -----                  -----
                Basin Index (%)                  150                    112 
 

LARAMIE RIVER

 Brooklyn Lake           10240   26.1    23.3    112    28.1    24.5    115 
 Cinnabar Park            9574   22.5    19.7    114    27.8    26.8    104 
 Crow Creek               8330    7.9      .0       *   19.5    13.3    147 
 Deadman Hill            10220   23.5    18.9    124    23.9    20.5    117 
 Rawah                    9020   12.5     6.5    192    22.1    17.1    129 
 Roach                    9700   22.1    17.2    128    26.7    22.2    120 
                                                -----                  -----
                Basin Index (%)                  134                    119 
 

S. PLATTE

 Black Mountain           8920     -M      -M       *   21.1      -M       *
 Crow Creek               8330    7.9      .0       *   19.5    13.3    147 
 Deadman Hill            10220   23.5    18.9    124    23.9    20.5    117 
                                                -----                  -----
                Basin Index (%)                  166*                   128 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    5.1      .0       *   19.5    17.0    115 
 Divide Peak              8880   20.6    18.0    114    30.1    24.1    125 
 Elk River                8700   13.6    13.6    100    22.2    22.6     98 
 Little Snake River       8915   25.4    22.5    113    38.2    32.5    118 
 Old Battle              10000   37.5    34.7    108    35.1    39.0     90 
 Sage Creek Basin         7850   11.7     1.1   1064*   16.0    16.1     99 
 Sandstone RS             8150    7.7     6.3    122    15.8    20.6     77 
 Whiskey Park             8950   29.7    26.3    113    34.2    31.3    109 
                                                -----                  -----
                Basin Index (%)                  124                    104 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   11.8    10.9    108    14.7    15.1     97 
 Blind Bull Sum           8650   25.2    23.4    108    17.5    21.2     83 
 East Rim Divide          7930     .0     8.3      0    12.5    12.8     98 
 Elkhart Park G.S.        9400    9.1    11.5     79    13.5    14.9     91 
 Gros Ventre Summit       8750    9.7    11.7     83    12.0    14.5     83 
 Gunsight Pass            9820   13.9    12.8    109    16.3    16.0    102 
 Kendall R.S.             7740     -M     4.8       *   13.1    15.4     85 
 Loomis Park              8240    8.1    11.2     72    17.9    18.8     95 
 New Fork Lake            8340    2.6     6.6     39    12.0    12.0    100 
 Pocket Creek             9360    9.5      -M       *   12.0      -M       *
 Snider Basin             8060    5.6     9.5     59    15.0    15.5     97 
 Spring Creek Divide      9000   25.4    24.3    105    25.3    26.1     97 
 Triple Peak              8500   19.1    17.9    107    28.8    27.8    104 
                                                -----                  -----
                Basin Index (%)                   88                     95 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    8.1      -M       *   14.8      -M       *
 Buck Pasture             9700   12.2      -M       *   20.2      -M       *
 EF Blacks Fork GS        9360    8.2      -M       *   14.1      -M       *
 Hams Fork                7840    3.5     3.3    106    12.1    13.0     93 
 Hewinta                  9519    8.9     5.0    178    16.5    16.0    103 
 Hickerson Park           9145    9.9     4.5    220    15.5    11.9    130 
 Hole-in-Rock             9150    4.9     2.9    169    15.1    11.4    132 
 Indian Creek             9425   20.9    23.3     90    20.2    24.9     81 
 Kelley R.S.              8180    9.5    11.7     81    17.0    20.1     85 
 Spirit Lk               10235   19.0      -M       *   22.3      -M       *
 Steel Creek Park        10200   19.9    17.0    117    22.7    18.9    120 
                                                -----                  -----
                Basin Index (%)                  114                    102 
 

UPPER BEAR RIVER

 Bear River RS            8777    1.2      -M       *   14.4      -M       *
 Bug Lake                 7950   13.0    15.4     84    21.0    21.6     97 
 Burts Miller Ranch       8000     .1      -M       *    7.2      -M       *
 Chalk Creek #1           8993   17.9    24.4     73    25.3    28.2     90 
 Hayden Fork              9212    7.6     9.5     80    22.9    23.6     97 
 Kelley R.S.              8180    9.5    11.7     81    17.0    20.1     85 
 Lily Lake                9156   10.4     9.9    105    16.7    19.4     86 
 Monte Cristo             8960   24.9    26.9     93    31.1    29.1    107 
 Salt River Summit        7760    6.2     8.0     78    17.2    18.3     94 
                                                -----                  -----
                Basin Index (%)                   85                     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.