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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 11:13p, 5/22/18
Temperature 48.5°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: DECEMBER 12 , 2016
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030    5.8     5.1    114    13.2     7.6    174 
 Black Bear               8170    9.4    12.3     76    19.3    13.3    145 
 Blind Bull Sum           8650    8.7     6.6    132    10.4     7.1    146 
 Cottonwood Creek         7670    6.5     5.9    110    13.5     8.4    161 
 East Rim Divide          7930    3.3     2.6    127     6.7     4.1    163 
 Grand Targhee            9260   19.0    11.4    167    18.5    10.9    170 
 Granite Creek            6770    4.8     3.9    123    11.2     6.8    165 
 Grassy Lake              7265    8.2     8.6     95    19.9    12.3    162 
 Gros Ventre Summit       8750    3.6     4.5     80     8.0     4.8    167 
 Gunsight Pass            9820    3.7     4.1     90     8.2     4.8    171 
 Lewis Lake Divide        7850    6.5     9.2     71    18.0    12.5    144 
 Phillips Bench           8200    5.9     7.5     79    15.3     9.4    163 
 Salt River Summit        7760    2.9     3.0     97     8.5     5.5    155 
 Snake River Station      6920    5.7     4.3    133    14.3     8.2    174 
 Spring Creek Divide      9000    8.0     6.6    121    13.5     8.1    167 
 Thumb Divide             7980    3.1     4.0     78     9.4     6.6    142 
 Togwotee Pass            9580    8.4     8.4    100    12.1     8.9    136 
 Two Ocean Plateau        9240   12.2    10.2    120    14.5     9.8    148 
 Willow Creek             8380    7.4     7.5     99    18.0    11.7    154 
 Younts Peak              8350    3.5     5.1     69     8.3     6.0    138 
                                                -----                  -----
                Basin Index (%)                  104                    156 
 

MADISON-GALLATIN

 Black Bear               8170    9.4    12.3     76    19.3    13.3    145 
 Canyon                   7870    3.1     3.5     89     9.2     5.8    159 
 Madison Plateau          7750    4.5     7.1     63    14.7     9.1    162 
 West Yellowstone         6700     -M     2.8       *     -M     5.0       *
 Whiskey Creek            6800    2.3     4.2     55     9.9     7.4    134 
                                                -----                  -----
                Basin Index (%)                   71                    149 
 

YELLOWSTONE

 Beartooth Lake           9360    7.3     7.4     99     5.7     6.8     84 
 Burnt Mtn                5880    2.4     1.5    160     6.0     5.8    103 
 Canyon                   7870    3.1     3.5     89     9.2     5.8    159 
 Cole Creek               7850    4.0     5.3     75     4.0     5.5     73 
 Evening Star             9200    8.8     8.4    105    15.2    10.1    150 
 Fisher Creek             9100    8.9    10.5     85    14.6    11.3    129 
 Northeast Entrance       7350    2.3     2.4     96     7.7     4.8    160 
 Parker Peak              9400    8.6     7.2    119    11.6     6.7    173 
 Sylvan Lake              8420    5.9     6.5     91    15.9     8.7    183 
 Thumb Divide             7980    3.1     4.0     78     9.4     6.6    142 
 Two Ocean Plateau        9240   12.2    10.2    120    14.5     9.8    148 
 White Mill               8700    6.7     7.1     94    10.6     8.6    123 
 Wolverine                7650    3.7     3.1    119     7.7     4.9    157 
                                                -----                  -----
                Basin Index (%)                  100                    138 
 

WIND RIVER

 Burroughs Creek          8750    4.3      -M       *    6.7      -M       *
 Castle Creek             8400    2.0      -M       *    4.3      -M       *
 Cold Springs             9630    2.2     2.6     85     4.7     4.2    112 
 Deer Park                9700    4.7     4.8     98     8.3     6.7    124 
 Hobbs Park              10100    4.7     5.5     85     6.3     5.2    121 
 Kirwin                   9550    3.6     3.9     92     6.2     4.6    135 
 Little Warm              9370    1.9     3.5     54     6.3     5.0    126 
 Owl Creek                8975    1.4     2.0     70     2.9     2.5    116 
 South Pass               9040    4.5     4.9     92     5.5     6.6     83 
 St. Lawrence Alt         8620    1.2     2.5     48     4.4     3.7    119 
 Togwotee Pass            9580    8.4     8.4    100    12.1     8.9    136 
 Townsend Creek           8700    1.9     3.0     63     5.1     5.0    102 
                                                -----                  -----
                Basin Index (%)                   84                    118 
 

BIGHORN BASIN

 Bald Mtn.                9380    7.9     6.5    122     6.8     6.0    113 
 Bear Trap Meadow         8200     .9     1.8     50     2.9     3.6     81 
 Bone Springs Div         9350    5.0     5.8     86     6.1     5.6    109 
 Grave Springs            8550    1.7     2.3     74     3.3     4.1     80 
 Kirwin                   9550    3.6     3.9     92     6.2     4.6    135 
 Marquette                8760    3.0      -M       *    5.2      -M       *
 Middle Powder            7760    2.4     3.4     71     3.2     4.9     65 
 Owl Creek                8975    1.4     2.0     70     2.9     2.5    116 
 Powder River Pass        9480     -M     3.5       *    4.0     4.7     85 
 Shell Creek              9580    6.2     5.4    115     5.6     5.2    108 
 Timber Creek             7950    2.0     2.0    100     3.4     3.4    100 
                                                -----                  -----
                Basin Index (%)                   94                    100 
 

SHOSHONE RIVER

 Blackwater               9780   10.8     7.9    137    14.0     7.9    177 
 Evening Star             9200    8.8     8.4    105    15.2    10.1    150 
 Marquette                8760    3.0      -M       *    5.2      -M       *
 Sylvan Road              7120    3.5     3.7     95    12.6     7.1    177 
 Younts Peak              8350    3.5     5.1     69     8.3     6.0    138 
                                                -----                  -----
                Basin Index (%)                  106                    161 
 

POWDER RIVER

 Bear Trap Meadow         8200     .9     1.8     50     2.9     3.6     81 
 Cloud Peak Reservoir     9860    2.6     4.5     58     5.0     5.2     96 
 Grave Springs            8550    1.7     2.3     74     3.3     4.1     80 
 Hansen Sawmill           8360    1.6     2.0     80     3.2     3.4     94 
 Middle Powder            7760    2.4     3.4     71     3.2     4.9     65 
 Powder River Pass        9480     -M     3.5       *    4.0     4.7     85 
 Soldier Park             8720    1.5      -M       *    3.8      -M       *
                                                -----                  -----
                Basin Index (%)                   66                     83 
 

TONGUE RIVER

 Big Goose                7990    2.4     2.9     83     3.7     4.4     84 
 Bone Springs Div         9350    5.0     5.8     86     6.1     5.6    109 
 Burgess Junction         7880    2.5     3.5     71     4.4     4.7     94 
 Dome Lake                8880    2.2     4.2     52     5.0     5.5     91 
 Little Goose             8870    2.6      -M       *    4.6      -M       *
 Sucker Creek             8880    3.3     3.9     85     4.2     5.3     79 
 Tie Creek                6870    2.1     1.1    191     4.9     4.6    107 
                                                -----                  -----
                Basin Index (%)                   82                     94 
 

BELLE FOURCHE

 Cole Canyon              5910    1.6     1.1    145     2.9     3.9     74 
                                                -----                  -----
                Basin Index (%)                  145                     74 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    2.5     2.0    125     3.8     4.8     79 
 North Rapid Creek        6130    2.2     2.1    105     2.4     4.1     59 
                                                -----                  -----
                Basin Index (%)                  115                     70 
 

UPPER N. PLATTE

 Arapaho Ridge           10960    7.1     6.9    103     9.1     8.5    107 
 Blackhall Mtn            9820    7.8      -M       *   10.2      -M       *
 Columbine                9160    7.0     5.8    121     9.2     8.6    107 
 Divide Peak              8880    4.2     5.7     74     6.7     7.8     86 
 Joe Wright              10120    5.1     7.2     71     9.4     9.4    100 
 Laprele Creek            8375    2.1     2.8     75     2.6     4.7     55 
 Med Bow                 10500   10.6      -M       *   11.6      -M       *
 North French Creek      10130    6.2     8.6     72     8.2     9.0     91 
 Never Summer            10280    5.5     6.2     89     6.6      -M       *
 Old Battle              10000    6.7     9.2     73     7.9    12.2     65 
 Rawah                    9020    3.6     3.2    112     6.0     5.8    103 
 Sage Creek Basin         7850    3.0     3.6     83     4.5     5.4     83 
 Sand Lake               10050    7.4     8.6     86     7.4     8.6     86 
 South Brush Creek        8440    2.3     3.3     70     3.9     5.5     71 
 Tower                   10500    9.8    14.0     70    12.1    14.0     86 
 Webber Springs           9250    4.5     6.8     66     8.5     9.2     92 
 Willow Creek Pass        9540    4.4     4.0    110     5.5     5.2    106 
 Zirkel                   9340    7.1     6.4    111    10.9    10.2    107 
                                                -----                  -----
                Basin Index (%)                   84                     90 
 

SWEETWATER

 Deer Park                9700    4.7     4.8     98     8.3     6.7    124 
 Larsen Creek             9000    3.3     3.4     97     7.6      -M       *
 South Pass               9040    4.5     4.9     92     5.5     6.6     83 
                                                -----                  -----
                Basin Index (%)                   95                    104 
 

LOWER N. PLATTE

 Casper Mtn.              7900    2.7     4.2     64     3.6     6.1     59 
 Laprele Creek            8375    2.1     2.8     75     2.6     4.7     55 
 Reno Hill                8400    3.4     4.5     76     3.6     5.7     63 
 Windy Peak               7900    1.9     2.2     86     2.6     4.1     63 
                                                -----                  -----
                Basin Index (%)                   74                     60 
 

LARAMIE RIVER

 Brooklyn Lake           10240    4.5     5.7     79     5.2     7.0     74 
 Cinnabar Park            9574    4.3     6.8     63     7.0     8.5     82 
 Crow Creek               8330    1.8     3.4     53     3.2     4.3     74 
 Deadman Hill            10220    5.5     5.2    106     6.1     6.1    100 
 Rawah                    9020    3.6     3.2    112     6.0     5.8    103 
 Roach                    9700     -M     4.7       *     -M     6.8       *
                                                -----                  -----
                Basin Index (%)                   81                     87 
 

S. PLATTE

 Black Mountain           8920    2.9      -M       *    4.6      -M       *
 Crow Creek               8330    1.8     3.4     53     3.2     4.3     74 
 Deadman Hill            10220    5.5     5.2    106     6.1     6.1    100 
                                                -----                  -----
                Basin Index (%)                   85                     89 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    3.0     2.4    125      -M     5.4       *
 Divide Peak              8880    4.2     5.7     74     6.7     7.8     86 
 Elk River                8700    4.7     4.3    109     6.4     6.8     94 
 Little Snake River       8915    6.1     4.9    124    10.8    11.0     98 
 Old Battle              10000    6.7     9.2     73     7.9    12.2     65 
 Sage Creek Basin         7850    3.0     3.6     83     4.5     5.4     83 
 Sandstone RS             8150    3.3     3.1    106     3.5     6.4     55 
 Whiskey Park             8950    6.2     6.8     91     9.5     8.9    107 
                                                -----                  -----
                Basin Index (%)                   93                     84 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080    5.2     4.3    121     8.1     4.9    165 
 Blind Bull Sum           8650    8.7     6.6    132    10.4     7.1    146 
 East Rim Divide          7930    3.3     2.6    127     6.7     4.1    163 
 Elkhart Park G.S.        9400    3.3     4.0     82     8.5     4.9    173 
 Gros Ventre Summit       8750    3.6     4.5     80     8.0     4.8    167 
 Gunsight Pass            9820    3.7     4.1     90     8.2     4.8    171 
 Kendall R.S.             7740    4.6     3.3    139     8.8     4.8    183 
 Loomis Park              8240    4.8     4.1    117    10.0     6.0    167 
 New Fork Lake            8340    3.9     3.0    130     4.8     4.0    120 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060    3.5     3.4    103     8.8     4.8    183 
 Spring Creek Divide      9000    8.0     6.6    121    13.5     8.1    167 
 Triple Peak              8500    9.2     5.9    156    14.2     8.4    169 
                                                -----                  -----
                Basin Index (%)                  118                    165 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8870    3.3      -M       *    4.8      -M       *
 Buck Pasture             9700    4.7      -M       *    7.2      -M       *
 EF Blacks Fork GS        9360    3.1      -M       *    5.2      -M       *
 Hams Fork                7840    3.1     3.0    103     7.0     4.0    175 
 Hewinta                  9519    3.1     2.4    129     5.3     5.3    100 
 Hickerson Park           9145    3.0     1.9    158     3.5     4.2     83 
 Hole-in-Rock             9150    1.8     2.1     86     3.8     4.0     95 
 Indian Creek             9425    7.5     7.1    106    11.2     7.3    153 
 Kelley R.S.              8180    5.0     4.0    125    10.6     6.2    171 
 Spirit Lk               10235    3.7      -M       *    6.1      -M       *
 Steel Creek Park        10200    4.9     5.0     98     6.8     6.0    113 
                                                -----                  -----
                Basin Index (%)                  111                    130 
 

UPPER BEAR RIVER

 Bear River RS            8777    3.1      -M       *    5.0      -M       *
 Bug Lake                 7950    6.4     4.6    139     8.4     6.9    122 
 Burts Miller Ranch       8000    1.7      -M       *    2.8      -M       *
 Chalk Creek #1           8993    7.1     7.5     95     9.3     9.1    102 
 Hayden Fork              9212    5.3     3.7    143     8.8     7.4    119 
 Kelley R.S.              8180    5.0     4.0    125    10.6     6.2    171 
 Lily Lake                9156    3.3     3.8     87     5.7     6.4     89 
 Monte Cristo             8960    6.4     7.2     89    10.1     8.9    113 
 Salt River Summit        7760    2.9     3.0     97     8.5     5.5    155 
                                                -----                  -----
                Basin Index (%)                  108                    122 

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


 -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.