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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 10:18a, 8/18/18
Temperature 63.3°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 MONDAY: APRIL 17 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   22.1    12.5    177    40.1    21.5    187 
 Black Bear               8170   47.6    36.8    129    55.6    39.3    141 
 Blind Bull Sum           8650   44.0    23.9    184      -M    20.0       *
 Cottonwood Creek         7670   27.0    19.3    140    39.2    25.3    155 
 East Rim Divide          7930   13.2     9.7    136    21.3    12.1    176 
 Grand Targhee            9260   48.2    41.5    116    43.2    32.3    134 
 Granite Creek            6770   23.5    11.7    201    36.4    20.1    181 
 Grassy Lake              7265   37.1    31.6    117    56.2    36.9    152 
 Gros Ventre Summit       8750   20.2    13.1    154    24.9    13.5    184 
 Gunsight Pass            9820   23.7    13.4    177    25.7    14.6    176 
 Lewis Lake Divide        7850   45.7    30.2    151    56.6    36.4    155 
 Phillips Bench           8200   38.2    25.9    147    47.4    28.8    165 
 Salt River Summit        7760   18.7    10.6    176    29.8    17.1    174 
 Snake River Station      6920   15.9    12.1    131    36.3    23.2    156 
 Spring Creek Divide      9000   41.6    23.4    178    41.2    24.4    169 
 Thumb Divide             7980   21.0    14.4    146    28.4    19.3    147 
 Togwotee Pass            9580   33.7    23.3    145    39.4    25.2    156 
 Two Ocean Plateau        9240     -M    27.6       *     -M    28.1       *
 Willow Creek             8380   27.6    26.7    103    51.1    34.7    147 
 Younts Peak              8350   25.1    14.9    168    31.7    16.4    193 
                                                -----                  -----
                Basin Index (%)                  145                    160 
 

MADISON-GALLATIN

 Black Bear               8170   47.6    36.8    129    55.6    39.3    141 
 Canyon                   7870   17.8    12.4    144    26.3    16.8    157 
 Madison Plateau          7750   28.0    22.7    123    37.4    27.1    138 
 West Yellowstone         6700    3.9     8.1     48    23.9    14.7    163 
 Whiskey Creek            6800   13.1    14.9     88    27.8    20.9    133 
                                                -----                  -----
                Basin Index (%)                  116                    144 
 

YELLOWSTONE

 Beartooth Lake           9360   33.4    22.8    146    28.7    20.4    141 
 Burnt Mtn                5880     .1      .0       *   15.0    13.7    109 
 Canyon                   7870   17.8    12.4    144    26.3    16.8    157 
 Cole Creek               7850   12.0    15.9     75     9.5    14.2     67 
 Evening Star             9200   38.9    25.0    156    45.7    28.3    161 
 Fisher Creek             9100   44.3    32.1    138    48.6    32.9    148 
 Northeast Entrance       7350    4.9     7.6     64    20.9    12.7    165 
 Parker Peak              9400   37.1    20.7    179    35.3    18.4    192 
 Sylvan Lake              8420   24.3    20.2    120    38.1    23.2    164 
 Thumb Divide             7980   21.0    14.4    146    28.4    19.3    147 
 Two Ocean Plateau        9240     -M    27.6       *     -M    28.1       *
 White Mill               8700   37.4    23.6    158    37.0    24.6    150 
 Wolverine                7650    3.4     8.1     42    21.2    12.6    168 
                                                -----                  -----
                Basin Index (%)                  135                    150 
 

WIND RIVER

 Burroughs Creek          8750   21.5      -M       *   28.0      -M       *
 Castle Creek             8400    9.1      -M       *   15.7      -M       *
 Cold Springs             9630   16.3     5.4    302    20.4    10.6    192 
 Deer Park                9700   32.7    16.0    204    38.5    21.0    183 
 Hobbs Park              10100   29.9    14.8    202    29.1    14.4    202 
 Kirwin                   9550   22.4    10.0    224    25.9    12.2    212 
 Little Warm              9370   18.8    10.2    184    25.4    13.6    187 
 Owl Creek                8975    9.4     4.7    200    13.4     6.6    203 
 South Pass               9040   31.6    15.7    201    29.2    18.2    160 
 St. Lawrence Alt         8620    8.8     6.0    147    17.5     9.6    182 
 Togwotee Pass            9580   33.7    23.3    145    39.4    25.2    156 
 Townsend Creek           8700   17.6     9.8    180    23.8    12.9    184 
                                                -----                  -----
                Basin Index (%)                  191                    182 
 

BIGHORN BASIN

 Bald Mtn.                9380   20.8    19.5    107    18.1    17.9    101 
 Bear Trap Meadow         8200    4.3     4.0    108     9.7     9.2    105 
 Bone Springs Div         9350   20.6    16.4    126    18.8    16.4    115 
 Grave Springs            8550    7.0     9.6     73     8.7    11.3     77 
 Kirwin                   9550   22.4    10.0    224    25.9    12.2    212 
 Marquette                8760   14.2      -M       *   18.2      -M       *
 Middle Powder            7760    8.5    12.5     68     8.5    12.5     68 
 Owl Creek                8975    9.4     4.7    200    13.4     6.6    203 
 Powder River Pass        9480    9.2    10.1     91    14.4    13.4    107 
 Shell Creek              9580   18.6    15.3    122    16.0    14.5    110 
 Timber Creek             7950    7.2     5.1    141    11.9     8.1    147 
                                                -----                  -----
                Basin Index (%)                  119                    119 
 

SHOSHONE RIVER

 Blackwater               9780   38.7    23.7    163    43.1    21.5    200 
 Evening Star             9200   38.9    25.0    156    45.7    28.3    161 
 Marquette                8760   14.2      -M       *   18.2      -M       *
 Sylvan Road              7120    2.1    10.2     21    31.0    17.2    180 
 Younts Peak              8350   25.1    14.9    168    31.7    16.4    193 
                                                -----                  -----
                Basin Index (%)                  142                    182 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.3     4.0    108     9.7     9.2    105 
 Cloud Peak Reservoir     9860   17.0    15.5    110    20.3    14.4    141 
 Grave Springs            8550    7.0     9.6     73     8.7    11.3     77 
 Hansen Sawmill           8360   11.3     5.4    209    15.6     9.3    168 
 Middle Powder            7760    8.5    12.5     68     8.5    12.5     68 
 Powder River Pass        9480    9.2    10.1     91    14.4    13.4    107 
 Soldier Park             8720   14.9      -M       *   15.7      -M       *
                                                -----                  -----
                Basin Index (%)                  100                    110 
 

TONGUE RIVER

 Big Goose                7990   12.0     9.6    125    15.3    12.2    125 
 Bone Springs Div         9350   20.6    16.4    126    18.8    16.4    115 
 Burgess Junction         7880   11.1    12.2     91    12.9    13.1     98 
 Dome Lake                8880   16.7    11.9    140    17.7    14.5    122 
 Little Goose             8870   14.6      -M       *   18.6      -M       *
 Sucker Creek             8880   13.5    12.7    106    15.1    15.4     98 
 Tie Creek                6870    1.2     4.5     27    14.4    12.4    116 
                                                -----                  -----
                Basin Index (%)                  112                    112 
 

BELLE FOURCHE

 Cole Canyon              5910     .0     2.6      0     7.8    10.1     77 
                                                -----                  -----
                Basin Index (%)                    0                     77 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     4.6      0     9.7    12.5     78 
 North Rapid Creek        6130     .0     4.8      0     8.1    10.5     77 
                                                -----                  -----
                Basin Index (%)                    0                     77 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.5    21.5    114    26.4    23.9    110 
 Blackhall Mtn            9820   35.0      -M       *   38.2      -M       *
 Columbine                9160   13.0    21.2     61    27.6    26.6    104 
 Divide Peak              8880   12.8    19.6     65    23.3    22.4    104 
 Joe Wright              10120   16.3    22.1     74    28.7    27.2    106 
 Laprele Creek            8375    7.3     8.8     83    12.7    13.3     95 
 Med Bow                 10500   35.1      -M       *   35.7      -M       *
 North French Creek      10130   24.0    32.0     75    27.9    28.0    100 
 Never Summer            10280   21.9    20.6    106    19.6      -M       *
 Old Battle              10000   36.4    32.3    113    38.9    36.4    107 
 Rawah                    9020    5.2     9.2     57    17.4    15.3    114 
 Sage Creek Basin         7850     -M     7.6       *   16.9    15.0    113 
 Sand Lake               10050   30.4    30.4    100    28.2    26.2    108 
 South Brush Creek        8440     -M    10.3       *   12.9    16.1     80 
 Tower                   10500   37.8    47.5     80    44.2    41.4    107 
 Webber Springs           9250   25.2    22.8    111    33.8    27.9    121 
 Willow Creek Pass        9540   18.1    12.7    143    18.6    14.1    132 
 Zirkel                   9340   27.2    23.2    117    42.4    29.5    144 
                                                -----                  -----
                Basin Index (%)                   93                    110 
 

SWEETWATER

 Deer Park                9700   32.7    16.0    204    38.5    21.0    183 
 Larsen Creek             9000   13.4    10.6    126    23.5      -M       *
 South Pass               9040   31.6    15.7    201    29.2    18.2    160 
                                                -----                  -----
                Basin Index (%)                  184                    173 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.4    14.4     72    13.6    16.1     84 
 Laprele Creek            8375    7.3     8.8     83    12.7    13.3     95 
 Reno Hill                8400   12.1    14.1     86    15.3    16.6     92 
 Windy Peak               7900    5.5     7.1     77    11.9    11.3    105 
                                                -----                  -----
                Basin Index (%)                   80                     93 
 

LARAMIE RIVER

 Brooklyn Lake           10240   21.1    22.1     95    23.5    22.3    105 
 Cinnabar Park            9574   14.0    20.7     68    22.6    25.0     90 
 Crow Creek               8330     .0     2.3      0     9.2    11.7     79 
 Deadman Hill            10220   20.7    16.5    125    20.8    18.4    113 
 Rawah                    9020    5.2     9.2     57    17.4    15.3    114 
 Roach                    9700   15.2    16.5     92    21.6    20.2    107 
                                                -----                  -----
                Basin Index (%)                   87                    102 
 

S. PLATTE

 Black Mountain           8920    8.8      -M       *   13.3      -M       *
 Crow Creek               8330     .0     2.3      0     9.2    11.7     79 
 Deadman Hill            10220   20.7    16.5    125    20.8    18.4    113 
                                                -----                  -----
                Basin Index (%)                  110                    100 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     .0     5.8      0    17.0    15.7    108 
 Divide Peak              8880   12.8    19.6     65    23.3    22.4    104 
 Elk River                8700    8.4    16.5     51    20.5    20.9     98 
 Little Snake River       8915   23.1    25.3     91    39.1    30.9    127 
 Old Battle              10000   36.4    32.3    113    38.9    36.4    107 
 Sage Creek Basin         7850     -M     7.6       *   16.9    15.0    113 
 Sandstone RS             8150    1.3    11.1     12    16.2    19.1     85 
 Whiskey Park             8950   22.7    26.5     86    30.5    29.1    105 
                                                -----                  -----
                Basin Index (%)                   76                    107 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.7    12.8    162    23.5    13.8    170 
 Blind Bull Sum           8650   44.0    23.9    184      -M    20.0       *
 East Rim Divide          7930   13.2     9.7    136    21.3    12.1    176 
 Elkhart Park G.S.        9400   19.7    12.0    164    24.8    13.8    180 
 Gros Ventre Summit       8750   20.2    13.1    154    24.9    13.5    184 
 Gunsight Pass            9820   23.7    13.4    177    25.7    14.6    176 
 Kendall R.S.             7740   17.3     9.3    186    29.4    14.6    201 
 Loomis Park              8240   25.4    13.3    191    32.7    17.7    185 
 New Fork Lake            8340   13.6     9.3    146    18.4    11.1    166 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   16.9    11.3    150    27.9    14.6    191 
 Spring Creek Divide      9000   41.6    23.4    178    41.2    24.4    169 
 Triple Peak              8500   35.5    19.3    184    41.7    26.0    160 
                                                -----                  -----
                Basin Index (%)                  171                    177 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    6.6      -M       *   16.5      -M       *
 Buck Pasture             9632   16.1      -M       *   24.2      -M       *
 EF Blacks Fork GS        9360   12.5      -M       *   18.0      -M       *
 Hams Fork                7840   11.4     7.8    146    22.0    11.8    186 
 Hewinta                  9500    7.4     9.1     81    18.0    14.6    123 
 Hickerson Park           9122    6.9     6.1    113    13.5    10.8    125 
 Hole-in-Rock             9168    6.4     6.4    100    14.0    10.3    136 
 Indian Creek             9425   40.5    23.5    172    41.8    23.2    180 
 Kelley R.S.              8180   24.5    13.4    183    31.2    18.6    168 
 Spirit Lk               10235   15.6      -M       *   19.1      -M       *
 Steel Creek Park        10158   19.2    16.1    119    21.7    17.4    125 
                                                -----                  -----
                Basin Index (%)                  141                    152 
 

UPPER BEAR RIVER

 Bear River RS            8777    4.7      -M       *   19.1      -M       *
 Bug Lake                 7987   32.2    18.4    175    34.8    20.0    174 
 Burts Miller Ranch       8000     .0      -M       *   10.6      -M       *
 Chalk Creek #1           9171   32.7    24.9    131    37.1    26.3    141 
 Hayden Fork              9130   15.4    13.0    118    30.4    22.0    138 
 Kelley R.S.              8180   24.5    13.4    183    31.2    18.6    168 
 Lily Lake                9133   11.8    11.7    101    20.4    17.9    114 
 Monte Cristo             8932   36.2    27.6    131    40.6    26.9    151 
 Salt River Summit        7760   18.7    10.6    176    29.8    17.1    174 
                                                -----                  -----
                Basin Index (%)                  143                    151 

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


 -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.