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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 11:28p, 5/22/18
Temperature 48.3°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 FRIDAY: MARCH 18 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   14.7    14.6    101    17.9    18.8     95 
 Black Bear               8170   29.2    32.2     91    31.0    34.2     91 
 Blind Bull Sum           8650   23.0    20.3    113    14.7    17.5     84 
 Cottonwood Creek         7670     -M    19.5       *     -M    21.7       *
 East Rim Divide          7930   10.3     9.5    108    10.1    10.5     96 
 Grand Targhee            9260   34.7    32.8    106    26.5    26.8     99 
 Granite Creek            6770   13.7    15.0     91    16.1    18.0     89 
 Grassy Lake              7265   27.4    29.1     94    31.7    32.3     98 
 Gros Ventre Summit       8750    9.8    11.4     86     9.1    11.3     81 
 Gunsight Pass            9820   12.2    11.9    103    12.7    12.0    106 
 Lewis Lake Divide        7850   27.1    27.5     99    29.4    31.8     92 
 Phillips Bench           8200   20.3    22.2     91    23.5    25.1     94 
 Salt River Summit        7760   11.8    11.9     99    13.5    14.8     91 
 Snake River Station      6920   15.8    15.2    104    20.9    20.2    103 
 Spring Creek Divide      9000   23.0    20.7    111    21.2    21.2    100 
 Thumb Divide             7980   12.3    13.9     88    13.4    16.3     82 
 Togwotee Pass            9580   18.9    20.4     93    21.7    21.5    101 
 Two Ocean Plateau        9240   23.1    23.8     97    21.8    24.1     90 
 Willow Creek             8380   25.2    25.3    100    28.8    29.6     97 
 Younts Peak              8350   12.2    13.2     92    11.2    14.0     80 
                                                -----                  -----
                Basin Index (%)                   98                     94 
 

MADISON-GALLATIN

 Black Bear               8170   29.2    32.2     91    31.0    34.2     91 
 Canyon                   7870    9.9    11.7     85    12.2    14.4     85 
 Madison Plateau          7750   19.6    20.0     98    20.5    23.4     88 
 West Yellowstone         6700    9.7     9.9     98    12.3    12.6     98 
 Whiskey Creek            6800   12.1    13.9     87    14.6    18.0     81 
                                                -----                  -----
                Basin Index (%)                   92                     88 
 

YELLOWSTONE

 Beartooth Lake           9360   15.3    19.0     81    15.7    17.5     90 
 Burnt Mtn                5880     .3     4.5      7     7.5    10.6     71 
 Canyon                   7870    9.9    11.7     85    12.2    14.4     85 
 Cole Creek               7850    5.2    11.8     44     7.0    10.5     67 
 Evening Star             9200   22.6    21.9    103    25.1    24.2    104 
 Fisher Creek             9100   26.1    28.1     93    23.3    28.2     83 
 Northeast Entrance       7350    7.4     8.9     83    10.6    10.9     97 
 Parker Peak              9400   17.4    17.5     99    18.3    15.5    118 
 Sylvan Lake              8420   15.6    17.9     87    20.3    19.7    103 
 Thumb Divide             7980   12.3    13.9     88    13.4    16.3     82 
 Two Ocean Plateau        9240   23.1    23.8     97    21.8    24.1     90 
 White Mill               8700   20.6    19.7    105    19.5    21.0     93 
 Wolverine                7650    9.8     8.8    111    10.9    10.8    101 
                                                -----                  -----
                Basin Index (%)                   89                     92 
 

WIND RIVER

 Burroughs Creek          8750    9.6      -M       *   11.4      -M       *
 Castle Creek             8400    3.9      -M       *    5.3      -M       *
 Cold Springs             9630    6.3     6.2    102     6.5     8.4     77 
 Deer Park                9700   10.9    12.8     85    11.3    16.9     67 
 Hobbs Park              10100    9.6    11.5     83     8.8    10.9     81 
 Kirwin                   9550    7.8     8.3     94     9.4     9.8     96 
 Little Warm              9370    7.7     9.1     85     9.4    11.0     85 
 Owl Creek                8975    3.4     4.6     74     3.5     4.9     71 
 South Pass               9040    9.3    13.4     69     7.4    15.1     49 
 St. Lawrence Alt         8620    3.1     6.0     52     5.2     7.4     70 
 Togwotee Pass            9580   18.9    20.4     93    21.7    21.5    101 
 Townsend Creek           8700    5.7     8.0     71     6.6     9.9     67 
                                                -----                  -----
                Basin Index (%)                   82                     78 
 

BIGHORN BASIN

 Bald Mtn.                9380   11.5    16.4     70     9.4    14.6     64 
 Bear Trap Meadow         8200    5.1     4.9    104     4.7     6.9     68 
 Bone Springs Div         9350   10.1    13.9     73     8.2    13.2     62 
 Grave Springs            8550    4.6     8.0     58      -M     8.8       *
 Kirwin                   9550    7.8     8.3     94     9.4     9.8     96 
 Marquette                8760    3.2      -M       *    7.1      -M       *
 Middle Powder            7760    6.4     9.5     67      -M     9.8       *
 Owl Creek                8975    3.4     4.6     74     3.5     4.9     71 
 Powder River Pass        9480    6.8     9.0     76     6.4    10.6     60 
 Shell Creek              9580    9.0    12.7     71     8.0    11.7     68 
 Timber Creek             7950    2.9     4.2     69     7.3     6.0    122 
                                                -----                  -----
                Basin Index (%)                   74                     73 
 

SHOSHONE RIVER

 Blackwater               9780   18.1    20.5     88    20.4    17.9    114 
 Evening Star             9200   22.6    21.9    103    25.1    24.2    104 
 Marquette                8760    3.2      -M       *    7.1      -M       *
 Sylvan Road              7120    7.8    10.3     76    13.8    15.0     92 
 Younts Peak              8350   12.2    13.2     92    11.2    14.0     80 
                                                -----                  -----
                Basin Index (%)                   92                     99 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.1     4.9    104     4.7     6.9     68 
 Cloud Peak Reservoir     9860    7.4    12.6     59     7.7    11.0     70 
 Grave Springs            8550    4.6     8.0     58      -M     8.8       *
 Hansen Sawmill           8360    3.7     5.5     67     4.5     7.0     64 
 Middle Powder            7760    6.4     9.5     67      -M     9.8       *
 Powder River Pass        9480    6.8     9.0     76     6.4    10.6     60 
 Soldier Park             8720    1.7      -M       *    4.3      -M       *
                                                -----                  -----
                Basin Index (%)                   69                     66 
 

TONGUE RIVER

 Big Goose                7990    3.8     7.6     50     4.3     8.9     48 
 Bone Springs Div         9350   10.1    13.9     73     8.2    13.2     62 
 Burgess Junction         7880    5.5     9.4     59     6.0    10.2     59 
 Dome Lake                8880    5.6    10.0     56     5.7    11.2     51 
 Little Goose             8870    4.5      -M       *    5.9      -M       *
 Sucker Creek             8880    6.1    10.7     57     6.3    12.0     52 
 Tie Creek                6870     .2     4.9      4     4.8     9.6     50 
                                                -----                  -----
                Basin Index (%)                   55                     54 
 

BELLE FOURCHE

 Cole Canyon              5910    2.0     5.5     36     6.9     7.8     88 
                                                -----                  -----
                Basin Index (%)                   36                     88 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    3.6     7.2     50     8.3    10.4     80 
 North Rapid Creek        6130    4.4     6.4     69     6.6     8.5     78 
                                                -----                  -----
                Basin Index (%)                   59                     79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   20.7    18.0    115    20.6    19.4    106 
 Blackhall Mtn            9820   26.4      -M       *   25.8      -M       *
 Columbine                9160   22.8    21.8    105    23.0    22.6    102 
 Divide Peak              8880   16.8    17.4     97    19.4    18.8    103 
 Joe Wright              10120   14.1    18.9     75    21.7    22.5     96 
 Laprele Creek            8375    7.5     9.0     83     8.4    10.6     79 
 Med Bow                 10500   30.0      -M       *   26.4      -M       *
 North French Creek      10130   22.5    24.6     91    21.5    23.4     92 
 Never Summer            10280   16.5    17.6     94    14.2      -M       *
 Old Battle              10000   25.4    26.2     97    23.9    31.0     77 
 Rawah                    9020   11.5     9.2    125    14.7    11.8    125 
 Sage Creek Basin         7850   13.2    11.6    114    10.8    12.9     84 
 Sand Lake               10050   22.1    24.2     91    20.9    21.3     98 
 South Brush Creek        8440   11.0    11.1     99    10.8    13.1     82 
 Tower                   10500   33.9    39.5     86    32.6    35.3     92 
 Webber Springs           9250   19.5    20.9     93    21.7    23.5     92 
 Willow Creek Pass        9540   13.1    10.8    121    13.5    11.6    116 
 Zirkel                   9340   26.1    25.8    101    27.6    25.1    110 
                                                -----                  -----
                Basin Index (%)                   97                     96 
 

SWEETWATER

 Deer Park                9700   10.9    12.8     85    11.3    16.9     67 
 Larsen Creek             9000    7.1    11.0     65    10.0      -M       *
 South Pass               9040    9.3    13.4     69     7.4    15.1     49 
                                                -----                  -----
                Basin Index (%)                   73                     58 
 

LOWER N. PLATTE

 Casper Mtn.              7900    8.7    12.0     72    10.1    12.5     81 
 Laprele Creek            8375    7.5     9.0     83     8.4    10.6     79 
 Reno Hill                8400   10.8    11.8     92    13.0    12.7    102 
 Windy Peak               7900    6.5     6.9     94     8.2     8.9     92 
                                                -----                  -----
                Basin Index (%)                   84                     89 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.8    17.5    119    19.8    18.1    109 
 Cinnabar Park            9574   18.0    17.8    101    19.8    21.1     94 
 Crow Creek               8330    7.4     7.0    106    11.4     8.7    131 
 Deadman Hill            10220   16.3    13.7    119    15.4    14.7    105 
 Rawah                    9020   11.5     9.2    125    14.7    11.8    125 
 Roach                    9700   14.6    13.8    106    16.4    16.6     99 
                                                -----                  -----
                Basin Index (%)                  112                    107 
 

S. PLATTE

 Black Mountain           8920   10.6      -M       *   13.4      -M       *
 Crow Creek               8330    7.4     7.0    106    11.4     8.7    131 
 Deadman Hill            10220   16.3    13.7    119    15.4    14.7    105 
                                                -----                  -----
                Basin Index (%)                  114                    115 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440   12.2    11.2    109    13.4    13.4    100 
 Divide Peak              8880   16.8    17.4     97    19.4    18.8    103 
 Elk River                8700   16.4    17.3     95    16.8    17.7     95 
 Little Snake River       8915   21.0    20.8    101    27.2    26.2    104 
 Old Battle              10000   25.4    26.2     97    23.9    31.0     77 
 Sage Creek Basin         7850   13.2    11.6    114    10.8    12.9     84 
 Sandstone RS             8150   10.5    11.8     89    10.2    16.5     62 
 Whiskey Park             8950   24.2    24.1    100    24.3    24.7     98 
                                                -----                  -----
                Basin Index (%)                  100                     91 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    9.1    11.4     80     9.5    11.6     82 
 Blind Bull Sum           8650   23.0    20.3    113    14.7    17.5     84 
 East Rim Divide          7930   10.3     9.5    108    10.1    10.5     96 
 Elkhart Park G.S.        9400    7.9    10.5     75     9.9    11.7     85 
 Gros Ventre Summit       8750    9.8    11.4     86     9.1    11.3     81 
 Gunsight Pass            9820   12.2    11.9    103    12.7    12.0    106 
 Kendall R.S.             7740    9.4    11.1     85    10.8    12.8     84 
 Loomis Park              8240   13.3    13.2    101    15.2    15.4     99 
 New Fork Lake            8340    8.9     9.2     97    10.2     9.6    106 
 Pocket Creek             9360    6.5      -M       *    7.9      -M       *
 Snider Basin             8060   11.7    10.9    107    11.3    12.7     89 
 Spring Creek Divide      9000   23.0    20.7    111    21.2    21.2    100 
 Triple Peak              8500   23.0    19.2    120    24.0    22.5    107 
                                                -----                  -----
                Basin Index (%)                  101                     94 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870   10.1      -M       *   10.2      -M       *
 Buck Pasture             9700   11.5      -M       *   14.3      -M       *
 EF Blacks Fork GS        9360    8.1      -M       *    8.2      -M       *
 Hams Fork                7840     -M    10.2       *     -M    10.0       *
 Hewinta                  9519    9.6     9.6    100    11.3    12.2     93 
 Hickerson Park           9145    8.4     6.6    127     9.3     8.7    107 
 Hole-in-Rock             9150    8.3     6.5    128     9.6     8.2    117 
 Indian Creek             9425   19.4    21.0     92    15.0    19.8     76 
 Kelley R.S.              8180   12.1    13.2     92    13.4    16.0     84 
 Spirit Lk               10235   10.7      -M       *   13.0      -M       *
 Steel Creek Park        10200   13.5    13.3    102    15.6    14.1    111 
                                                -----                  -----
                Basin Index (%)                  102                     94 
 

UPPER BEAR RIVER

 Bear River RS            8777    7.9      -M       *   10.5      -M       *
 Bug Lake                 7950   16.8    16.5    102    16.8    17.2     98 
 Burts Miller Ranch       8000    4.8      -M       *    5.1      -M       *
 Chalk Creek #1           8993   17.4    20.8     84    19.2    21.9     88 
 Hayden Fork              9212   12.2    14.2     86    17.1    18.3     93 
 Kelley R.S.              8180   12.1    13.2     92    13.4    16.0     84 
 Lily Lake                9156   11.6    11.4    102    11.9    14.8     80 
 Monte Cristo             8960   24.7    24.1    102    23.4    22.8    103 
 Salt River Summit        7760   11.8    11.9     99    13.5    14.8     91 
                                                -----                  -----
                Basin Index (%)                   95                     92 

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


 -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.