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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 10:18p, 8/20/18
Temperature 56.3°F
Wind 8.0 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: MARCH 20 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030     -M    14.7       *   37.4    19.0    197 
 Black Bear               8170   43.8    32.5    135    49.3    34.5    143 
 Blind Bull Sum           8650   40.8    20.5    199      -M    17.6       *
 Cottonwood Creek         7670   25.6    19.9    129    34.5    21.9    158 
 East Rim Divide          7930   18.0     9.6    188    19.9    10.6    188 
 Grand Targhee            9260   40.9    33.0    124    37.3    27.1    138 
 Granite Creek            6770   29.1    15.0    194    34.4    18.2    189 
 Grassy Lake              7265   36.7    29.4    125    50.6    32.7    155 
 Gros Ventre Summit       8750   17.4    11.6    150    22.0    11.5    191 
 Gunsight Pass            9820   19.8    12.1    164    22.3    12.1    184 
 Lewis Lake Divide        7850   39.4    27.7    142    51.2    32.1    160 
 Phillips Bench           8200     -M    22.4       *   44.1    25.3    174 
 Salt River Summit        7760   19.8    12.0    165    26.8    15.0    179 
 Snake River Station      6920   19.6    15.2    129    33.4    20.4    164 
 Spring Creek Divide      9000   36.7    21.1    174    37.1    21.5    173 
 Thumb Divide             7980   21.7    14.1    154    26.1    16.5    158 
 Togwotee Pass            9580   30.7    20.6    149    35.3    21.8    162 
 Two Ocean Plateau        9240     -M    24.0       *     -M    24.4       *
 Willow Creek             8380   30.0    25.4    118    45.5    29.9    152 
 Younts Peak              8350   27.6    13.4    206    29.3    14.1    208 
                                                -----                  -----
                Basin Index (%)                  149                    166 
 

MADISON-GALLATIN

 Black Bear               8170   43.8    32.5    135    49.3    34.5    143 
 Canyon                   7870   16.8    11.8    142    23.9    14.6    164 
 Madison Plateau          7750   25.9    20.1    129    33.3    23.7    141 
 West Yellowstone         6700   10.7     9.9    108    21.6    12.8    169 
 Whiskey Creek            6800   14.2    14.2    100    24.3    18.2    134 
                                                -----                  -----
                Basin Index (%)                  126                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   30.1    19.3    156    25.5    17.7    144 
 Burnt Mtn                5880    2.6     4.6     57    12.0    10.9    110 
 Canyon                   7870   16.8    11.8    142    23.9    14.6    164 
 Cole Creek               7850    9.3    12.0     78     6.6    10.7     62 
 Evening Star             9200   36.0    22.2    162    41.6    24.4    170 
 Fisher Creek             9100   40.5    28.2    144    43.4    28.5    152 
 Northeast Entrance       7350   10.6     9.0    118    18.8    11.0    171 
 Parker Peak              9400   31.1    17.6    177      -M    15.7       *
 Sylvan Lake              8420   22.2    18.2    122    34.6    20.0    173 
 Thumb Divide             7980   21.7    14.1    154    26.1    16.5    158 
 Two Ocean Plateau        9240     -M    24.0       *     -M    24.4       *
 White Mill               8700   32.1    19.9    161    32.9    21.2    155 
 Wolverine                7650   11.9     8.9    134    19.9    11.0    181 
                                                -----                  -----
                Basin Index (%)                  143                    153 
 

WIND RIVER

 Burroughs Creek          8750   24.0      -M       *   25.4      -M       *
 Castle Creek             8400   11.3      -M       *   14.3      -M       *
 Cold Springs             9630   11.8     6.3    187    14.9     8.6    173 
 Deer Park                9700   27.1    13.3    204    32.2    17.2    187 
 Hobbs Park              10100   21.8    11.8    185    20.4    11.1    184 
 Kirwin                   9550   18.6     8.4    221    21.1    10.0    211 
 Little Warm              9370   15.7     9.2    171    21.3    11.2    190 
 Owl Creek                8975    6.5     4.6    141     8.7     5.0    174 
 South Pass               9040   25.0    13.8    181    23.8    15.4    155 
 St. Lawrence Alt         8620    6.1     6.1    100    12.0     7.5    160 
 Togwotee Pass            9580   30.7    20.6    149    35.3    21.8    162 
 Townsend Creek           8700   12.1     8.2    148    16.0    10.1    158 
                                                -----                  -----
                Basin Index (%)                  171                    174 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.8    16.5    102    14.6    14.9     98 
 Bear Trap Meadow         8200    4.5     5.1     88     6.2     7.1     87 
 Bone Springs Div         9350   15.4    14.1    109    14.7    13.4    110 
 Grave Springs            8550    5.9     8.1     73     6.1     9.0     68 
 Kirwin                   9550   18.6     8.4    221    21.1    10.0    211 
 Marquette                8760    7.1      -M       *   11.7      -M       *
 Middle Powder            7760     -M     9.8       *    6.2    10.0     62 
 Owl Creek                8975    6.5     4.6    141     8.7     5.0    174 
 Powder River Pass        9480    6.6     9.2     72    10.4    10.8     96 
 Shell Creek              9580   14.4    12.8    112    11.7    11.9     98 
 Timber Creek             7950    4.6     4.2    110     6.9     6.1    113 
                                                -----                  -----
                Basin Index (%)                  112                    109 
 

SHOSHONE RIVER

 Blackwater               9780   35.2    20.8    169    39.0    18.1    215 
 Evening Star             9200   36.0    22.2    162    41.6    24.4    170 
 Marquette                8760    7.1      -M       *   11.7      -M       *
 Sylvan Road              7120   13.3    10.4    128    28.9    15.1    191 
 Younts Peak              8350   27.6    13.4    206    29.3    14.1    208 
                                                -----                  -----
                Basin Index (%)                  168                    194 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.5     5.1     88     6.2     7.1     87 
 Cloud Peak Reservoir     9860   11.7    12.9     91    13.0    11.2    116 
 Grave Springs            8550    5.9     8.1     73     6.1     9.0     68 
 Hansen Sawmill           8360    7.1     5.7    125     9.3     7.1    131 
 Middle Powder            7760     -M     9.8       *    6.2    10.0     62 
 Powder River Pass        9480    6.6     9.2     72    10.4    10.8     96 
 Soldier Park             8720   10.8      -M       *    9.1      -M       *
                                                -----                  -----
                Basin Index (%)                   87                     93 
 

TONGUE RIVER

 Big Goose                7990    8.0     7.8    103     9.3     9.2    101 
 Bone Springs Div         9350   15.4    14.1    109    14.7    13.4    110 
 Burgess Junction         7880    7.9     9.5     83     9.1    10.5     87 
 Dome Lake                8880   12.2    10.2    120    12.0    11.5    104 
 Little Goose             8870    8.7      -M       *   11.6      -M       *
 Sucker Creek             8880    9.6    10.9     88     9.8    12.2     80 
 Tie Creek                6870    2.7     5.0     54     9.7     9.8     99 
                                                -----                  -----
                Basin Index (%)                   97                     97 
 

BELLE FOURCHE

 Cole Canyon              5910     -M     5.5       *    6.4     7.9     81 
                                                -----                  -----
                Basin Index (%)                     *                    81 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    2.4     7.2     33     7.7    10.5     73 
 North Rapid Creek        6130     -M     6.5       *    6.4     8.6     74 
                                                -----                  -----
                Basin Index (%)                   33                     74 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   23.4    18.0    130    23.5    19.7    119 
 Blackhall Mtn            9820   34.6      -M       *   35.5      -M       *
 Columbine                9160   22.4    22.0    102    26.0    22.9    114 
 Divide Peak              8880   17.0    17.6     97    20.9    19.1    109 
 Joe Wright              10120   17.0    19.1     89    25.7    22.9    112 
 Laprele Creek            8375   10.3     9.1    113    10.5    10.8     97 
 Med Bow                 10500   37.3      -M       *   32.4      -M       *
 North French Creek      10130   23.3    25.2     92    25.2    23.7    106 
 Never Summer            10280   20.9    17.8    117    17.2      -M       *
 Old Battle              10000   35.3    26.3    134    36.4    31.4    116 
 Rawah                    9020   10.2     9.4    109    15.1    12.2    124 
 Sage Creek Basin         7850   10.8    11.5     94    15.2    12.9    118 
 Sand Lake               10050   28.2    24.6    115    25.5    21.7    118 
 South Brush Creek        8440    7.9    11.1     71    11.7    13.3     88 
 Tower                   10500   39.1    40.0     98    41.7    35.8    116 
 Webber Springs           9250   26.4    21.0    126    31.5    23.9    132 
 Willow Creek Pass        9540   16.3    10.9    150    17.1    11.7    146 
 Zirkel                   9340   37.7    25.7    147    40.2    25.5    158 
                                                -----                  -----
                Basin Index (%)                  112                    119 
 

SWEETWATER

 Deer Park                9700   27.1    13.3    204    32.2    17.2    187 
 Larsen Creek             9000   16.8    11.2    150    21.0      -M       *
 South Pass               9040   25.0    13.8    181    23.8    15.4    155 
                                                -----                  -----
                Basin Index (%)                  180                    172 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.1    12.2     83    10.3    12.8     80 
 Laprele Creek            8375   10.3     9.1    113    10.5    10.8     97 
 Reno Hill                8400   10.7    11.9     90    11.8    13.0     91 
 Windy Peak               7900    8.8     7.1    124    10.1     9.1    111 
                                                -----                  -----
                Basin Index (%)                   99                     93 
 

LARAMIE RIVER

 Brooklyn Lake           10240   24.3    17.7    137    21.7    18.5    117 
 Cinnabar Park            9574   17.3    18.0     96    20.8    21.4     97 
 Crow Creek               8330    3.5     6.9     51     8.2     8.9     92 
 Deadman Hill            10220   19.6    13.9    141    18.2    15.0    121 
 Rawah                    9020   10.2     9.4    109    15.1    12.2    124 
 Roach                    9700   15.1    14.0    108    18.4    16.9    109 
                                                -----                  -----
                Basin Index (%)                  113                    110 
 

S. PLATTE

 Black Mountain           8920    9.2      -M       *   10.5      -M       *
 Crow Creek               8330    3.5     6.9     51     8.2     8.9     92 
 Deadman Hill            10220   19.6    13.9    141    18.2    15.0    121 
                                                -----                  -----
                Basin Index (%)                  111                    110 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440    6.6    11.4     58    15.7    13.6    115 
 Divide Peak              8880   17.0    17.6     97    20.9    19.1    109 
 Elk River                8700   16.2    17.4     93    19.1    18.0    106 
 Little Snake River       8915   28.1    21.1    133    36.8    26.5    139 
 Old Battle              10000   35.3    26.3    134    36.4    31.4    116 
 Sage Creek Basin         7850   10.8    11.5     94    15.2    12.9    118 
 Sandstone RS             8150   10.9    12.2     89    15.2    16.7     91 
 Whiskey Park             8950   25.7    24.3    106    28.3    25.0    113 
                                                -----                  -----
                Basin Index (%)                  106                    115 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   19.7    11.7    168    21.6    11.8    183 
 Blind Bull Sum           8650   40.8    20.5    199      -M    17.6       *
 East Rim Divide          7930   18.0     9.6    188    19.9    10.6    188 
 Elkhart Park G.S.        9400   17.7    10.7    165    22.1    11.8    187 
 Gros Ventre Summit       8750   17.4    11.6    150    22.0    11.5    191 
 Gunsight Pass            9820   19.8    12.1    164    22.3    12.1    184 
 Kendall R.S.             7740   21.8    11.3    193    27.6    13.0    212 
 Loomis Park              8240   26.1    13.3    196    30.6    15.6    196 
 New Fork Lake            8340   15.8     9.3    170    16.7     9.7    172 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.4    11.0    167    25.5    12.8    199 
 Spring Creek Divide      9000   36.7    21.1    174    37.1    21.5    173 
 Triple Peak              8500   34.8    19.5    178    37.7    22.7    166 
                                                -----                  -----
                Basin Index (%)                  177                    185 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    8.8      -M       *   13.6      -M       *
 Buck Pasture             9632   16.8      -M       *   20.7      -M       *
 EF Blacks Fork GS        9360   14.0      -M       *   14.2      -M       *
 Hams Fork                7840   14.6    10.3    142    18.6    10.2    182 
 Hewinta                  9500    7.5     9.9     76    14.3    12.3    116 
 Hickerson Park           9122    6.5     6.6     98     8.4     8.9     94 
 Hole-in-Rock             9168    5.0     6.6     76     9.1     8.3    110 
 Indian Creek             9425   37.0    21.3    174      -M    20.2       *
 Kelley R.S.              8180   24.6    13.4    184    28.4    16.2    175 
 Spirit Lk               10235   12.6      -M       *   14.7      -M       *
 Steel Creek Park        10158   15.3    13.4    114    17.1    14.3    120 
                                                -----                  -----
                Basin Index (%)                  136                    137 
 

UPPER BEAR RIVER

 Bear River RS            8777    9.0      -M       *   15.4      -M       *
 Bug Lake                 7987   29.5    16.7    177    30.0    17.4    172 
 Burts Miller Ranch       8000    4.2      -M       *    8.5      -M       *
 Chalk Creek #1           9171   30.6    21.2    144    32.0    22.2    144 
 Hayden Fork              9130   18.7    14.3    131    26.7    18.6    144 
 Kelley R.S.              8180   24.6    13.4    184    28.4    16.2    175 
 Lily Lake                9133   11.5    11.4    101    17.0    15.0    113 
 Monte Cristo             8932   32.6    24.4    134    32.4    23.1    140 
 Salt River Summit        7760   19.8    12.0    165    26.8    15.0    179 
                                                -----                  -----
                Basin Index (%)                  148                    152 

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


 -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.