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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 10:38a, 5/21/18
Temperature 64.6°F
Wind 1.0 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 SUNDAY: FEBRUARY 4 , 2018
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7060   12.6    10.9    116    14.1    14.3     99 
 Black Bear               8170   27.6    23.5    117    26.5    25.4    104 
 Blind Bull Sum           8650   21.9    14.3    153    13.4    13.2    102 
 Cottonwood Creek         7670   14.1    13.4    105    16.2    16.3     99 
 East Rim Divide          7930    7.8     6.9    113     7.8     7.9     99 
 Grand Targhee            9260   32.8    24.0    137    20.7    21.1     98 
 Granite Creek            6770   11.4    10.9    105    14.0    13.9    101 
 Grassy Lake              7265   20.3    20.9     97    23.9    24.5     98 
 Gros Ventre Summit       8750    9.8     8.6    114     9.2     8.4    110 
 Gunsight Pass            9820   10.2     8.4    121    10.4     9.1    114 
 Lewis Lake Divide        7850   24.0    20.3    118    26.2    23.6    111 
 Phillips Bench           8200   15.3    16.0     96    16.5    18.7     88 
 Salt River Summit        7640    6.5     8.1     80     8.4    10.9     77 
 Snake River Station      6920   12.5    11.3    111    16.9    15.8    107 
 Spring Creek Divide      9000   17.0    14.9    114    16.4    15.8    104 
 Thumb Divide             7980   12.4     9.6    129    13.1    12.4    106 
 Togwotee Pass            9580   20.5    15.2    135    21.0    16.2    130 
 Two Ocean Plateau        9240   26.2    18.2    144    19.3    17.7    109 
 Willow Creek             8080   20.3    17.7    115    23.0    22.2    104 
 Younts Peak              8350     -M     9.9       *     -M    10.7       *
                                                -----                  -----
                Basin Index (%)                  118                    103 
 

MADISON-GALLATIN

 Black Bear               8170   27.6    23.5    117    26.5    25.4    104 
 Canyon                   7870   11.4     8.4    136    13.2    11.0    120 
 Madison Plateau          7750   17.0    14.2    120    17.8    17.7    101 
 West Yellowstone         6700    8.7     7.1    123    11.4     9.9    115 
 Whiskey Creek            6800   10.3     9.7    106    12.1    13.5     90 
                                                -----                  -----
                Basin Index (%)                  119                    105 
 

YELLOWSTONE

 Beartooth Lake           9360   26.2    14.2    185    23.9    13.2    181 
 Burnt Mtn                5880    3.6     2.5    144     9.2     8.1    114 
 Canyon                   7870   11.4     8.4    136    13.2    11.0    120 
 Cole Creek               7850    9.4     8.6    109     6.0     7.8     77 
 Evening Star             9200   27.0    16.6    163    28.7    18.4    156 
 Fisher Creek             9100   35.3    21.1    167    30.0    21.3    141 
 Northeast Entrance       7350    8.2     6.6    124    11.8     8.5    139 
 Parker Peak              9400   22.7    13.3    171    19.7    11.6    170 
 Sylvan Lake              8420   16.1    13.3    121    18.1    15.2    119 
 Thumb Divide             7980   12.4     9.6    129    13.1    12.4    106 
 Two Ocean Plateau        9240   26.2    18.2    144    19.3    17.7    109 
 White Mill               8700   27.3    15.0    182    19.8    15.8    125 
 Wolverine                7650   12.7     7.2    176    14.7     8.4    175 
                                                -----                  -----
                Basin Index (%)                  154                    134 
 

WIND RIVER

 Burroughs Creek          8750   10.3      -M       *   12.2      -M       *
 Castle Creek             8400    5.8      -M       *    7.2      -M       *
 Cold Springs             9630    6.4     4.7    136     6.7     6.3    106 
 Deer Park                9700    7.5     9.5     79     9.5    12.6     75 
 Hobbs Park              10100   11.2     8.0    140     9.5     8.0    119 
 Kirwin                   9550   13.2     6.0    220    11.8     7.4    159 
 Little Warm              9370   11.0     6.5    169    11.1     8.4    132 
 Owl Creek                8975    2.9     3.1     94     4.6     3.6    128 
 South Pass               9040    7.5     9.5     79     5.3    11.2     47 
 St. Lawrence Alt         8620    2.6     4.2     62     6.1     5.4    113 
 Togwotee Pass            9580   20.5    15.2    135    21.0    16.2    130 
 Townsend Creek           8700    5.0     5.4     93     6.3     7.2     88 
                                                -----                  -----
                Basin Index (%)                  122                    106 
 

BIGHORN BASIN

 Bald Mtn.                9380   13.4    11.0    122     8.8    10.9     81 
 Bear Trap Meadow         8200    5.7     3.5    163     6.5     5.2    125 
 Bone Springs Div         9350   11.8     9.9    119     8.9     9.8     91 
 Grave Springs            8550    4.4     5.0     88     3.7     6.6     56 
 Kirwin                   9550   13.2     6.0    220    11.8     7.4    159 
 Marquette                8760    3.9      -M       *    7.5      -M       *
 Middle Powder            7760    5.7     6.4     89      -M     7.6       *
 Owl Creek                8975    2.9     3.1     94     4.6     3.6    128 
 Powder River Pass        9480     -M     6.7       *     -M     8.0       *
 Shell Creek              9580   14.0     9.2    152    10.1     9.1    111 
 Timber Creek             7950    2.4     3.0     80      -M     4.6       *
                                                -----                  -----
                Basin Index (%)                  129                    103 
 

SHOSHONE RIVER

 Blackwater               9780   23.7    14.9    159    21.6    13.5    160 
 Evening Star             9200   27.0    16.6    163    28.7    18.4    156 
 Marquette                8760    3.9      -M       *    7.5      -M       *
 Sylvan Road              7120   10.0     7.9    127    14.4    12.1    119 
 Younts Peak              8350     -M     9.9       *     -M    10.7       *
                                                -----                  -----
                Basin Index (%)                  154                    147 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.7     3.5    163     6.5     5.2    125 
 Cloud Peak Reservoir     9860   10.0     8.5    118     8.9     8.0    111 
 Grave Springs            8550    4.4     5.0     88     3.7     6.6     56 
 Hansen Sawmill           8360    4.7     4.0    118     6.1     5.2    117 
 Middle Powder            7760    5.7     6.4     89      -M     7.6       *
 Powder River Pass        9480     -M     6.7       *     -M     8.0       *
 Soldier Park             8720    3.1      -M       *    6.0      -M       *
                                                -----                  -----
                Basin Index (%)                  111                    101 
 

TONGUE RIVER

 Big Goose                7990    4.3     5.0     86     4.8     6.7     72 
 Bone Springs Div         9350   11.8     9.9    119     8.9     9.8     91 
 Burgess Junction         7880    5.4     6.8     79     4.4     7.6     58 
 Dome Lake                8880    8.1     7.0    116     6.8     8.6     79 
 Little Goose             8870    5.4      -M       *    7.3      -M       *
 Sucker Creek             8880    6.1     7.2     85      -M     8.9       *
 Tie Creek                6870    2.1     3.4     62      -M     7.2       *
                                                -----                  -----
                Basin Index (%)                   96                     76 
 

BELLE FOURCHE

 Cole Canyon              5910    4.1     3.3    124     5.6     5.8     97 
                                                -----                  -----
                Basin Index (%)                  124                     97 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    4.9     4.9    100     7.0     7.9     89 
 North Rapid Creek        6130    4.8     4.4    109     4.9     6.4     77 
                                                -----                  -----
                Basin Index (%)                  104                     83 
 

UPPER N. PLATTE

 Arapaho Ridge           10960     -M    13.5       *     -M    14.5       *
 Blackhall Mtn            9820   16.7      -M       *   16.9      -M       *
 Columbine                9160   12.9    15.0     86    15.3    16.8     91 
 Divide Peak              8880    8.7    12.7     69    12.1    14.0     86 
 Joe Wright              10120   10.3    13.2     78    18.4    16.4    112 
 Laprele Creek            8375    4.3     5.5     78     5.8     7.7     75 
 Med Bow                 10500   27.4      -M       *   23.2      -M       *
 North French Creek      10130   18.1    16.3    111    18.4    17.3    106 
 Never Summer            10280   11.4    12.9     88     9.6      -M       *
 Old Battle              10000   15.8    19.6     81    15.5    22.9     68 
 Rawah                    9020    6.8     6.4    106    10.1     9.2    110 
 Sage Creek Basin         7850    6.0     8.7     69     7.3    10.0     73 
 Sand Lake               10050   17.3    16.8    103    14.1    15.4     92 
 South Brush Creek        8440    6.6     7.5     88     8.0     9.7     82 
 Tower                   10500   20.0    28.2     71    20.7    26.1     79 
 Webber Springs           9250   11.5    14.4     80    13.7    17.4     79 
 Willow Creek Pass        9540    8.3     7.9    105     9.2     8.4    110 
 Zirkel                   9340   14.6    19.0     77    19.3    19.6     98 
                                                -----                  -----
                Basin Index (%)                   85                     89 
 

SWEETWATER

 Deer Park                9700    7.5     9.5     79     9.5    12.6     75 
 Larsen Creek             9000    5.6     7.5     75     7.6      -M       *
 South Pass               9040    7.5     9.5     79     5.3    11.2     47 
                                                -----                  -----
                Basin Index (%)                   78                     62 
 

LOWER N. PLATTE

 Casper Mtn.              7900    5.2     7.7     68      -M     9.2       *
 Laprele Creek            8375    4.3     5.5     78     5.8     7.7     75 
 Reno Hill                8400    6.6     7.8     85     7.6     9.2     83 
 Windy Peak               7900    4.1     4.3     95     5.6     6.5     86 
                                                -----                  -----
                Basin Index (%)                   80                     81 
 

LARAMIE RIVER

 Brooklyn Lake           10240   16.1    12.1    133    16.7    13.2    127 
 Cinnabar Park            9574     -M    13.5       *     -M    16.5       *
 Crow Creek               8330    1.9     5.7     33     7.5     6.5    115 
 Deadman Hill            10220   12.6    10.4    121    12.3    10.5    117 
 Rawah                    9020    6.8     6.4    106    10.1     9.2    110 
 Roach                    9700    9.1    10.2     89    11.7    12.1     97 
                                                -----                  -----
                Basin Index (%)                  104                    113 
 

S. PLATTE

 Black Mountain           8920    6.0      -M       *    8.6      -M       *
 Crow Creek               8330    1.9     5.7     33     7.5     6.5    115 
 Deadman Hill            10220   12.6    10.4    121    12.3    10.5    117 
                                                -----                  -----
                Basin Index (%)                   90                    116 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.3     7.2     46     6.6     9.9     67 
 Divide Peak              8880    8.7    12.7     69    12.1    14.0     86 
 Elk River                8700    8.7    11.7     74    10.0    13.1     76 
 Little Snake River       8915   12.7    16.0     79    17.9    21.3     84 
 Old Battle              10000   15.8    19.6     81    15.5    22.9     68 
 Sage Creek Basin         7850    6.0     8.7     69     7.3    10.0     73 
 Sandstone RS             8150    5.2     8.3     63     5.5    12.3     45 
 Whiskey Park             8950   13.7    16.6     83    16.4    18.3     90 
                                                -----                  -----
                Basin Index (%)                   74                     75 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    8.5     8.5    100     8.6     8.5    101 
 Blind Bull Sum           8650   21.9    14.3    153    13.4    13.2    102 
 East Rim Divide          7930    7.8     6.9    113     7.8     7.9     99 
 Elkhart Park G.S.        9400    8.0     7.7    104     7.7     8.7     89 
 Gros Ventre Summit       8750    9.8     8.6    114     9.2     8.4    110 
 Gunsight Pass            9820   10.2     8.4    121    10.4     9.1    114 
 Kendall R.S.             7740    9.5     7.8    122    10.2     9.5    107 
 Loomis Park              8240   10.8     9.8    110    11.6    11.6    100 
 New Fork Lake            8340    7.8     6.8    115     6.9     7.2     96 
 Pocket Creek             9360    6.3      -M       *    5.9      -M       *
 Snider Basin             8060    8.1     7.8    104     9.7     9.5    102 
 Spring Creek Divide      9000   17.0    14.9    114    16.4    15.8    104 
 Triple Peak              8500   18.2    13.5    135    20.1    16.5    122 
                                                -----                  -----
                Basin Index (%)                  120                    105 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    4.7      -M       *    5.9      -M       *
 Buck Pasture             9632     -M      -M       *     -M      -M       *
 EF Blacks Fork GS        9360    5.3      -M       *    4.3      -M       *
 Hams Fork                7840    5.5     7.4     74     5.9     7.4     80 
 Hewinta                  9500    5.1     6.0     85     7.4     8.9     83 
 Hickerson Park           9122    4.5     3.9    115     4.1     6.3     65 
 Hole-in-Rock             9168    3.9     4.1     95     4.5     5.9     76 
 Indian Creek             9425   13.3    14.8     90    10.0    14.4     69 
 Kelley R.S.              8180    8.1     9.2     88     9.2    11.8     78 
 Spirit Lk               10235    5.0      -M       *    5.9      -M       *
 Steel Creek Park        10158    8.0     8.9     90     8.7    10.2     85 
                                                -----                  -----
                Basin Index (%)                   89                     77 
 

UPPER BEAR RIVER

 Bear River RS            8777    5.5      -M       *    6.9      -M       *
 Bug Lake                 7987    9.5    11.4     83    10.3    12.7     81 
 Burts Miller Ranch       8000    3.8      -M       *    4.6      -M       *
 Chalk Creek #1           9171    9.1    13.4     68     9.9    16.0     62 
 Hayden Fork              9130    7.6     8.8     86     9.7    13.5     72 
 Kelley R.S.              8180    8.1     9.2     88     9.2    11.8     78 
 Lily Lake                9133    6.8     7.5     91     7.2    11.0     65 
 Monte Cristo             8932   12.2    16.1     76    12.5    16.7     75 
 Salt River Summit        7640    6.5     8.1     80     8.4    10.9     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.