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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 12:53p, 8/15/18
Temperature 74.2°F
Wind 4.0 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: APRIL 28 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   21.1    10.2    207    41.9    22.4    187 
 Black Bear               8170   51.9    37.1    140    59.7    41.2    145 
 Blind Bull Sum           8650     -M    23.9       *   38.7    20.9    185 
 Cottonwood Creek         7670   29.8    16.4    182    43.3    26.9    161 
 East Rim Divide          7930   11.1     8.6    129    22.4    12.6    178 
 Grand Targhee            9260     -M    43.8       *     -M    33.9       *
 Granite Creek            6770   22.4     8.8    255    38.0    20.9    182 
 Grassy Lake              7265   39.6    29.9    132    61.1    38.7    158 
 Gros Ventre Summit       8750   21.6    12.0    180    26.1    14.3    183 
 Gunsight Pass            9820     -M    13.2       *   27.8    15.7    177 
 Lewis Lake Divide        7850   48.4    30.5    159    59.3    38.0    156 
 Phillips Bench           8200   41.7    25.6    163    50.4    30.2    167 
 Salt River Summit        7760   17.6     8.2    215      -M    18.1       *
 Snake River Station      6920   14.4     8.9    162    39.0    24.3    160 
 Spring Creek Divide      9000   44.1    24.1    183    43.6    25.8    169 
 Thumb Divide             7980   20.4    13.7    149    30.4    20.6    148 
 Togwotee Pass            9580   36.8    24.7    149    42.5    26.8    159 
 Two Ocean Plateau        9240     -M    29.4       *     -M    29.6       *
 Willow Creek             8380   29.6    24.5    121    56.9    36.9    154 
 Younts Peak              8350   24.5    15.2    161    33.0    17.3    191 
                                                -----                  -----
                Basin Index (%)                  159                    165 
 

MADISON-GALLATIN

 Black Bear               8170   51.9    37.1    140    59.7    41.2    145 
 Canyon                   7870   18.8    11.3    166    28.6    17.7    162 
 Madison Plateau          7750   29.8    22.1    135    39.9    28.4    140 
 West Yellowstone         6700     .8     3.7     22    26.1    15.6    167 
 Whiskey Creek            6800   12.8    15.2     84    29.6    22.0    135 
                                                -----                  -----
                Basin Index (%)                  128                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   35.8    23.2    154    30.6    21.6    142 
 Burnt Mtn                5880     .0      .0       *   17.2    15.2    113 
 Canyon                   7870   18.8    11.3    166    28.6    17.7    162 
 Cole Creek               7850   15.1    16.3     93    12.3    15.8     78 
 Evening Star             9200   41.1    24.8    166    48.3    29.9    162 
 Fisher Creek             9100   47.3    33.1    143    51.5    34.6    149 
 Northeast Entrance       7350    3.5     4.4     80    22.7    13.5    168 
 Parker Peak              9400   42.3    21.7    195    39.3    19.6    201 
 Sylvan Lake              8420   27.0    20.3    133    41.8    24.6    170 
 Thumb Divide             7980   20.4    13.7    149    30.4    20.6    148 
 Two Ocean Plateau        9240     -M    29.4       *     -M    29.6       *
 White Mill               8700   40.5    23.8    170    39.2    25.8    152 
 Wolverine                7650    3.3     4.2     79    23.5    13.5    174 
                                                -----                  -----
                Basin Index (%)                  150                    153 
 

WIND RIVER

 Burroughs Creek          8750   20.4      -M       *   28.6      -M       *
 Castle Creek             8400    7.9      -M       *   17.3      -M       *
 Cold Springs             9630   15.2     2.0    760    21.0    12.0    175 
 Deer Park                9700   35.5    16.3    218    41.8    23.0    182 
 Hobbs Park              10100   32.9    15.8    208    31.8    16.3    195 
 Kirwin                   9550   25.1    10.3    244    27.7    13.4    207 
 Little Warm              9370   19.2     9.1    211    26.5    14.8    179 
 Owl Creek                8975    8.4     1.7    494    14.6     7.6    192 
 South Pass               9040   32.6    15.1    216    31.4    20.0    157 
 St. Lawrence Alt         8620    7.9     3.8    208    19.3    11.2    172 
 Togwotee Pass            9580   36.8    24.7    149    42.5    26.8    159 
 Townsend Creek           8700   18.1     8.2    221    25.5    14.6    175 
                                                -----                  -----
                Basin Index (%)                  217                    177 
 

BIGHORN BASIN

 Bald Mtn.                9380   23.1    20.5    113    20.1    19.2    105 
 Bear Trap Meadow         8200    6.8     1.5    453    14.0    10.2    137 
 Bone Springs Div         9350   23.1    16.5    140    20.6    17.7    116 
 Grave Springs            8550   10.9     9.2    118    12.7    12.4    102 
 Kirwin                   9550   25.1    10.3    244    27.7    13.4    207 
 Marquette                8760   18.6      -M       *   22.2      -M       *
 Middle Powder            7760   12.7    12.1    105    13.2    13.8     96 
 Owl Creek                8975    8.4     1.7    494    14.6     7.6    192 
 Powder River Pass        9480   11.5     9.8    117    17.2    14.6    118 
 Shell Creek              9580   19.9    16.0    124    17.4    15.8    110 
 Timber Creek             7950    7.3     3.5    209    14.1     9.5    148 
                                                -----                  -----
                Basin Index (%)                  147                    128 
 

SHOSHONE RIVER

 Blackwater               9780   41.6    24.9    167    45.6    22.9    199 
 Evening Star             9200   41.1    24.8    166    48.3    29.9    162 
 Marquette                8760   18.6      -M       *   22.2      -M       *
 Sylvan Road              7120     .0     7.1      0    32.5    18.2    179 
 Younts Peak              8350   24.5    15.2    161    33.0    17.3    191 
                                                -----                  -----
                Basin Index (%)                  149                    181 
 

POWDER RIVER

 Bear Trap Meadow         8200    6.8     1.5    453    14.0    10.2    137 
 Cloud Peak Reservoir     9860   20.8    16.5    126    24.7    16.1    153 
 Grave Springs            8550   10.9     9.2    118    12.7    12.4    102 
 Hansen Sawmill           8360   15.0     3.6    417    19.2    10.5    183 
 Middle Powder            7760   12.7    12.1    105    13.2    13.8     96 
 Powder River Pass        9480   11.5     9.8    117    17.2    14.6    118 
 Soldier Park             8720   17.5      -M       *   19.4      -M       *
                                                -----                  -----
                Basin Index (%)                  147                    130 
 

TONGUE RIVER

 Big Goose                7990   14.1     9.1    155    18.2    13.6    134 
 Bone Springs Div         9350   23.1    16.5    140    20.6    17.7    116 
 Burgess Junction         7880   12.7    12.2    104    14.8    14.4    103 
 Dome Lake                8880   18.5    11.7    158    20.5    16.0    128 
 Little Goose             8870   17.8      -M       *   22.6      -M       *
 Sucker Creek             8880   15.3    12.5    122    17.1    16.9    101 
 Tie Creek                6870    3.3     2.8    118    18.2    13.8    132 
                                                -----                  -----
                Basin Index (%)                  134                    118 
 

BELLE FOURCHE

 Cole Canyon              5910    1.5      .3    500*   11.2    11.4     98 
                                                -----                  -----
                Basin Index (%)                  500*                    98 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .1     2.3      4    10.8    13.9     78 
 North Rapid Creek        6130     .0     2.3      0     9.6    11.9     81 
                                                -----                  -----
                Basin Index (%)                    2                     79 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   25.8    22.3    116    28.9    25.8    112 
 Blackhall Mtn            9820   36.7      -M       *   41.4      -M       *
 Columbine                9160   12.3    19.5     63    30.7    28.1    109 
 Divide Peak              8880   11.5    18.0     64    25.1    23.9    105 
 Joe Wright              10120   18.5    23.5     79    32.3    29.3    110 
 Laprele Creek            8375    6.3     6.9     91    14.2    14.7     97 
 Med Bow                 10500   38.7      -M       *   39.4      -M       *
 North French Creek      10130   26.9    33.0     82    31.9    30.2    106 
 Never Summer            10280   24.7    21.5    115    22.2      -M       *
 Old Battle              10000   39.5    34.6    114    41.8    38.6    108 
 Rawah                    9020    5.8     7.4     78    20.0    17.0    118 
 Sage Creek Basin         7850     -M     1.4       *   17.8    15.9    112 
 Sand Lake               10050   32.1    31.2    103    30.7    28.5    108 
 South Brush Creek        8440     .3     9.9      3    14.7    17.5     84 
 Tower                   10500   44.0    49.8     88    48.6    44.1    110 
 Webber Springs           9250   22.8    22.0    104    36.3    29.5    123 
 Willow Creek Pass        9540   18.9    13.8    137    20.2    15.4    131 
 Zirkel                   9340   24.4    21.6    113    45.9    30.5    150 
                                                -----                  -----
                Basin Index (%)                   94                    113 
 

SWEETWATER

 Deer Park                9700   35.5    16.3    218    41.8    23.0    182 
 Larsen Creek             9000   13.4     9.5    141    25.7      -M       *
 South Pass               9040   32.6    15.1    216    31.4    20.0    157 
                                                -----                  -----
                Basin Index (%)                  199                    170 
 

LOWER N. PLATTE

 Casper Mtn.              7900   12.2    14.1     87    17.5    17.6     99 
 Laprele Creek            8375    6.3     6.9     91    14.2    14.7     97 
 Reno Hill                8400   12.9    13.4     96    17.6    18.4     96 
 Windy Peak               7900    3.8     5.1     75    13.2    12.7    104 
                                                -----                  -----
                Basin Index (%)                   89                     99 
 

LARAMIE RIVER

 Brooklyn Lake           10240   20.5    23.1     89    25.1    24.2    104 
 Cinnabar Park            9574   13.5    20.0     68    25.2    26.6     95 
 Crow Creek               8330     .2      .0       *   11.7    13.1     89 
 Deadman Hill            10220   21.2    18.6    114    23.5    20.2    116 
 Rawah                    9020    5.8     7.4     78    20.0    17.0    118 
 Roach                    9700   15.6    17.1     91    23.9    21.9    109 
                                                -----                  -----
                Basin Index (%)                   89                    105 
 

S. PLATTE

 Black Mountain           8920    7.9      -M       *   15.3      -M       *
 Crow Creek               8330     .2      .0       *   11.7    13.1     89 
 Deadman Hill            10220   21.2    18.6    114    23.5    20.2    116 
                                                -----                  -----
                Basin Index (%)                  115*                   106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0      .6      0*   19.3    16.9    114 
 Divide Peak              8880   11.5    18.0     64    25.1    23.9    105 
 Elk River                8700    5.8    14.1     41    23.0    22.3    103 
 Little Snake River       8915   23.3    22.9    102    42.7    32.1    133 
 Old Battle              10000   39.5    34.6    114    41.8    38.6    108 
 Sage Creek Basin         7850     -M     1.4       *   17.8    15.9    112 
 Sandstone RS             8150     .0     7.2      0    18.2    20.4     89 
 Whiskey Park             8950   24.4    25.9     94    34.5    30.9    112 
                                                -----                  -----
                Basin Index (%)                   85                    111 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   23.1    11.6    199    25.5    14.9    171 
 Blind Bull Sum           8650     -M    23.9       *   38.7    20.9    185 
 East Rim Divide          7930   11.1     8.6    129    22.4    12.6    178 
 Elkhart Park G.S.        9400   20.9    11.7    179    26.2    14.7    178 
 Gros Ventre Summit       8750   21.6    12.0    180    26.1    14.3    183 
 Gunsight Pass            9820     -M    13.2       *   27.8    15.7    177 
 Kendall R.S.             7740   15.5     5.6    277    30.6    15.2    201 
 Loomis Park              8240   24.7    11.4    217    34.2    18.6    184 
 New Fork Lake            8340   13.0     6.9    188    19.2    11.8    163 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   16.1     9.9    163    28.8    15.3    188 
 Spring Creek Divide      9000   44.1    24.1    183    43.6    25.8    169 
 Triple Peak              8500   36.7    18.5    198    44.2    27.4    161 
                                                -----                  -----
                Basin Index (%)                  189                    177 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    5.1      -M       *   18.3      -M       *
 Buck Pasture             9632   16.5      -M       *   26.8      -M       *
 EF Blacks Fork GS        9360   12.4      -M       *   20.6      -M       *
 Hams Fork                7840    9.8     4.1    239    23.4    12.8    183 
 Hewinta                  9500    6.9     5.7    121    20.2    15.8    128 
 Hickerson Park           9122    4.0     4.9     82    14.2    11.8    120 
 Hole-in-Rock             9168    4.7     3.8    124    15.0    11.2    134 
 Indian Creek             9425   43.4    23.7    183    44.2    24.6    180 
 Kelley R.S.              8180   24.3    11.8    206    33.3    19.8    168 
 Spirit Lk               10235   15.2      -M       *   20.2      -M       *
 Steel Creek Park        10158   21.7    16.8    129    24.3    18.7    130 
                                                -----                  -----
                Basin Index (%)                  162                    152 
 

UPPER BEAR RIVER

 Bear River RS            8777    1.7      -M       *   21.1      -M       *
 Bug Lake                 7987   32.6    15.9    205    36.6    21.3    172 
 Burts Miller Ranch       8000     .1      -M       *   11.6      -M       *
 Chalk Creek #1           9171   33.9    24.6    138    40.4    27.9    145 
 Hayden Fork              9130   15.1     9.9    153    33.3    23.3    143 
 Kelley R.S.              8180   24.3    11.8    206    33.3    19.8    168 
 Lily Lake                9133   12.5     9.8    128    22.6    19.2    118 
 Monte Cristo             8932   38.0    27.2    140    43.7    28.7    152 
 Salt River Summit        7760   17.6     8.2    215      -M    18.1       *
                                                -----                  -----
                Basin Index (%)                  162                    150 

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


 -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.