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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 FRIDAY: FEBRUARY 9 , 2018
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7060   13.5    11.4    118    15.0    14.8    101 
 Black Bear               8170   29.0    25.2    115    27.6    26.2    105 
 Blind Bull Sum           8650   23.7    15.0    158    14.3    13.6    105 
 Cottonwood Creek         7670   15.2    13.7    111    17.3    16.7    104 
 East Rim Divide          7930    8.4     7.0    120     8.3     8.1    102 
 Grand Targhee            9260   34.9    24.8    141    22.5    21.8    103 
 Granite Creek            6770   12.4    11.5    108    15.1    14.3    106 
 Grassy Lake              7265   21.9    21.9    100    25.0    25.3     99 
 Gros Ventre Summit       8750    9.7     8.7    111     9.4     8.6    109 
 Gunsight Pass            9820   11.0     8.7    126    11.1     9.5    117 
 Lewis Lake Divide        7850   26.3    21.5    122    27.5    24.5    112 
 Phillips Bench           8200   16.8    16.7    101    17.6    19.3     91 
 Salt River Summit        7640    6.8     8.4     81     8.7    11.3     77 
 Snake River Station      6920   13.7    12.0    114    17.9    16.3    110 
 Spring Creek Divide      9000   18.2    15.6    117    17.5    16.3    107 
 Thumb Divide             7980   12.9     9.9    130    13.4    12.7    106 
 Togwotee Pass            9580   22.0    15.6    141    22.4    16.7    134 
 Two Ocean Plateau        9240   27.8    18.8    148    20.1    18.3    110 
 Willow Creek             8080   22.0    18.1    122    24.5    22.7    108 
 Younts Peak              8350     -M    10.2       *     -M    11.0       *
                                                -----                  -----
                Basin Index (%)                  122                    106 
 

MADISON-GALLATIN

 Black Bear               8170   29.0    25.2    115    27.6    26.2    105 
 Canyon                   7870   12.0     8.7    138    13.9    11.3    123 
 Madison Plateau          7750   17.8    14.9    119    18.3    18.2    101 
 West Yellowstone         6700    9.0     7.2    125    11.7    10.2    115 
 Whiskey Creek            6800   10.8     9.9    109    12.8    14.0     91 
                                                -----                  -----
                Basin Index (%)                  119                    106 
 

YELLOWSTONE

 Beartooth Lake           9360   30.1    14.7    205      -M    13.5       *
 Burnt Mtn                5880    4.2     2.8    150     9.8     8.3    118 
 Canyon                   7870   12.0     8.7    138    13.9    11.3    123 
 Cole Creek               7850   10.0     8.8    114     6.3     8.0     79 
 Evening Star             9200   31.2    16.7    187    30.8    19.0    162 
 Fisher Creek             9100   39.4    21.8    181    32.6    21.9    149 
 Northeast Entrance       7350   10.4     6.8    153    14.0     8.7    161 
 Parker Peak              9400   24.5    13.6    180    21.1    12.0    176 
 Sylvan Lake              8420   17.3    13.5    128    19.3    15.6    124 
 Thumb Divide             7980   12.9     9.9    130    13.4    12.7    106 
 Two Ocean Plateau        9240   27.8    18.8    148    20.1    18.3    110 
 White Mill               8700   32.0    15.4    208    23.1    16.3    142 
 Wolverine                7650     -M     7.3       *     -M     8.6       *
                                                -----                  -----
                Basin Index (%)                  166                    134 
 

WIND RIVER

 Burroughs Creek          8750   11.8      -M       *   13.7      -M       *
 Castle Creek             8400    6.3      -M       *    7.7      -M       *
 Cold Springs             9630    6.8     4.8    142     7.2     6.5    111 
 Deer Park                9700    7.8     9.5     82    10.0    13.1     76 
 Hobbs Park              10100   11.6     8.1    143     9.8     8.2    120 
 Kirwin                   9550   14.5     6.1    238    13.0     7.6    171 
 Little Warm              9370   11.6     6.7    173    11.9     8.6    138 
 Owl Creek                8975    3.1     3.2     97     4.8     3.7    130 
 South Pass               9040    7.8     9.8     80      -M    11.5       *
 St. Lawrence Alt         8620    2.5     4.3     58     6.1     5.6    109 
 Togwotee Pass            9580   22.0    15.6    141    22.4    16.7    134 
 Townsend Creek           8700    5.2     5.6     93     6.4     7.5     85 
                                                -----                  -----
                Basin Index (%)                  126                    118 
 

BIGHORN BASIN

 Bald Mtn.                9380   15.4    11.5    134    10.5    11.2     94 
 Bear Trap Meadow         8200    6.7     3.6    186     7.4     5.3    140 
 Bone Springs Div         9350   13.9    10.1    138    10.4    10.1    103 
 Grave Springs            8550    4.7     5.2     90     3.7     6.8     54 
 Kirwin                   9550   14.5     6.1    238    13.0     7.6    171 
 Marquette                8760    4.1      -M       *    7.6      -M       *
 Middle Powder            7760    6.2     6.7     93      -M     7.7       *
 Owl Creek                8975    3.1     3.2     97     4.8     3.7    130 
 Powder River Pass        9480   12.8     6.9    186    11.6     8.2    141 
 Shell Creek              9580     -M     9.6       *   12.3     9.3    132 
 Timber Creek             7950    2.5     3.1     81      -M     4.7       *
                                                -----                  -----
                Basin Index (%)                  141                    118 
 

SHOSHONE RIVER

 Blackwater               9780   25.7    15.1    170    23.5    13.9    169 
 Evening Star             9200   31.2    16.7    187    30.8    19.0    162 
 Marquette                8760    4.1      -M       *    7.6      -M       *
 Sylvan Road              7120   11.3     8.1    140    16.2    12.4    131 
 Younts Peak              8350     -M    10.2       *     -M    11.0       *
                                                -----                  -----
                Basin Index (%)                  171                    156 
 

POWDER RIVER

 Bear Trap Meadow         8200    6.7     3.6    186     7.4     5.3    140 
 Cloud Peak Reservoir     9860   11.5     8.9    129    10.2     8.3    123 
 Grave Springs            8550    4.7     5.2     90     3.7     6.8     54 
 Hansen Sawmill           8360    5.6     4.1    137     6.9     5.3    130 
 Middle Powder            7760    6.2     6.7     93      -M     7.7       *
 Powder River Pass        9480   12.8     6.9    186    11.6     8.2    141 
 Soldier Park             8720    4.4      -M       *    6.7      -M       *
                                                -----                  -----
                Basin Index (%)                  134                    117 
 

TONGUE RIVER

 Big Goose                7990    5.1     5.2     98     5.4     6.8     79 
 Bone Springs Div         9350   13.9    10.1    138    10.4    10.1    103 
 Burgess Junction         7880    6.5     7.1     92     5.3     7.8     68 
 Dome Lake                8880    9.9     7.3    136     8.0     8.7     92 
 Little Goose             8870    6.2      -M       *    8.2      -M       *
 Sucker Creek             8880    7.1     7.5     95      -M     9.1       *
 Tie Creek                6870    2.7     3.6     75     5.5     7.4     74 
                                                -----                  -----
                Basin Index (%)                  111                     85 
 

BELLE FOURCHE

 Cole Canyon              5910    4.9     3.8    129     6.5     6.1    107 
                                                -----                  -----
                Basin Index (%)                  129                    107 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    6.2     5.3    117     8.6     8.1    106 
 North Rapid Creek        6130    5.6     4.8    117     5.9     6.6     89 
                                                -----                  -----
                Basin Index (%)                  117                     99 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   13.4    14.0     96    13.4    15.1     89 
 Blackhall Mtn            9820   17.8      -M       *   17.8      -M       *
 Columbine                9160   14.1    15.8     89    16.4    17.3     95 
 Divide Peak              8880    9.0    13.4     67    12.4    14.5     86 
 Joe Wright              10120   10.8    13.4     81    19.1    16.8    114 
 Laprele Creek            8375    4.6     5.8     79     6.0     7.9     76 
 Med Bow                 10500   28.9      -M       *   24.4      -M       *
 North French Creek      10130   19.0    17.1    111    19.1    17.7    108 
 Never Summer            10280   12.0    13.2     91     9.8      -M       *
 Old Battle              10000   16.8    20.6     82    16.5    23.7     70 
 Rawah                    9020    6.9     6.8    101    10.3     9.5    108 
 Sage Creek Basin         7850    6.3     9.0     70     7.4    10.4     71 
 Sand Lake               10050   18.1    17.4    104    15.0    15.9     94 
 South Brush Creek        8440    6.6     7.6     87     8.1    10.0     81 
 Tower                   10500   21.9    29.9     73    22.3    26.9     83 
 Webber Springs           9250   12.2    15.2     80    14.5    17.9     81 
 Willow Creek Pass        9540    8.7     8.1    107     9.5     8.7    109 
 Zirkel                   9340   16.5    19.5     85    21.3    20.2    105 
                                                -----                  -----
                Basin Index (%)                   87                     91 
 

SWEETWATER

 Deer Park                9700    7.8     9.5     82    10.0    13.1     76 
 Larsen Creek             9000    7.3     7.9     92     8.0      -M       *
 South Pass               9040    7.8     9.8     80      -M    11.5       *
                                                -----                  -----
                Basin Index (%)                   84                     76*
 

LOWER N. PLATTE

 Casper Mtn.              7900    5.4     8.1     67      -M     9.5       *
 Laprele Creek            8375    4.6     5.8     79     6.0     7.9     76 
 Reno Hill                8400    6.9     8.2     84     7.9     9.4     84 
 Windy Peak               7900    4.3     4.4     98     5.8     6.6     88 
                                                -----                  -----
                Basin Index (%)                   80                     82 
 

LARAMIE RIVER

 Brooklyn Lake           10240   17.5    12.6    139    18.1    13.6    133 
 Cinnabar Park            9574     -M    13.9       *     -M    16.9       *
 Crow Creek               8330    2.1     5.8     36     7.6     6.7    113 
 Deadman Hill            10220   13.2    10.7    123    12.8    10.8    119 
 Rawah                    9020    6.9     6.8    101    10.3     9.5    108 
 Roach                    9700    9.6    10.6     91    12.3    12.5     98 
                                                -----                  -----
                Basin Index (%)                  106                    115 
 

S. PLATTE

 Black Mountain           8920    6.1      -M       *    8.7      -M       *
 Crow Creek               8330    2.1     5.8     36     7.6     6.7    113 
 Deadman Hill            10220   13.2    10.7    123    12.8    10.8    119 
                                                -----                  -----
                Basin Index (%)                   93                    117 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.4     7.6     45     6.7    10.2     66 
 Divide Peak              8880    9.0    13.4     67    12.4    14.5     86 
 Elk River                8700    9.3    12.4     75    10.6    13.5     79 
 Little Snake River       8915   13.9    16.8     83    19.0    21.9     87 
 Old Battle              10000   16.8    20.6     82    16.5    23.7     70 
 Sage Creek Basin         7850    6.3     9.0     70     7.4    10.4     71 
 Sandstone RS             8150    5.6     8.8     64     5.6    12.7     44 
 Whiskey Park             8950   14.7    17.2     85    17.3    18.9     92 
                                                -----                  -----
                Basin Index (%)                   75                     76 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    8.8     8.6    102     8.8     8.8    100 
 Blind Bull Sum           8650   23.7    15.0    158    14.3    13.6    105 
 East Rim Divide          7930    8.4     7.0    120     8.3     8.1    102 
 Elkhart Park G.S.        9400    8.7     7.9    110     8.1     8.9     91 
 Gros Ventre Summit       8750    9.7     8.7    111     9.4     8.6    109 
 Gunsight Pass            9820   11.0     8.7    126    11.1     9.5    117 
 Kendall R.S.             7740   10.2     8.2    124    10.8     9.8    110 
 Loomis Park              8240   11.5    10.1    114    12.4    11.9    104 
 New Fork Lake            8340    8.3     7.0    119     7.6     7.5    101 
 Pocket Creek             9360    6.4      -M       *    6.1      -M       *
 Snider Basin             8060    9.0     8.3    108    10.8     9.8    110 
 Spring Creek Divide      9000   18.2    15.6    117    17.5    16.3    107 
 Triple Peak              8500   20.2    14.2    142    22.0    16.9    130 
                                                -----                  -----
                Basin Index (%)                  124                    109 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    5.0      -M       *    6.1      -M       *
 Buck Pasture             9632    7.6      -M       *    8.3      -M       *
 EF Blacks Fork GS        9360    5.4      -M       *     -M      -M       *
 Hams Fork                7840    5.8     7.7     75     6.2     7.7     81 
 Hewinta                  9500    4.7     6.3     75     7.2     9.1     79 
 Hickerson Park           9122    4.5     4.2    107     4.2     6.5     65 
 Hole-in-Rock             9168    4.0     4.3     93     4.6     6.0     77 
 Indian Creek             9425   14.1    15.4     92    10.4    14.9     70 
 Kelley R.S.              8180    8.6     9.5     91     9.6    12.2     79 
 Spirit Lk               10235    5.0      -M       *    5.9      -M       *
 Steel Creek Park        10158    8.3     9.4     88     9.0    10.5     86 
                                                -----                  -----
                Basin Index (%)                   88                     77 
 

UPPER BEAR RIVER

 Bear River RS            8777    5.8      -M       *    7.1      -M       *
 Bug Lake                 7987   10.0    12.1     83    10.6    13.1     81 
 Burts Miller Ranch       8000    3.8      -M       *    4.5      -M       *
 Chalk Creek #1           9171    9.5    14.3     66    10.3    16.6     62 
 Hayden Fork              9130    8.1     9.3     87    10.2    13.9     73 
 Kelley R.S.              8180    8.6     9.5     91     9.6    12.2     79 
 Lily Lake                9133    7.1     7.8     91     7.4    11.3     65 
 Monte Cristo             8932   12.6    17.0     74    12.8    17.3     74 
 Salt River Summit        7640    6.8     8.4     81     8.7    11.3     77 
                                                -----                  -----
                Basin Index (%)                   80                     73 

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


 -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.