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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 4:17p, 8/20/18
Temperature 70.4°F
Wind 9.0 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: APRIL 2 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   23.4    14.9    157    38.6    20.3    190 
 Black Bear               8170   44.7    36.6    122    52.0    36.8    141 
 Blind Bull Sum           8650   42.2    22.6    187      -M    18.9       *
 Cottonwood Creek         7670   26.2    21.3    123    36.5    23.8    153 
 East Rim Divide          7930   16.4    10.0    164    20.7    11.4    182 
 Grand Targhee            9260   43.3    36.9    117    38.9    29.9    130 
 Granite Creek            6770   26.5    14.8    179    35.4    19.2    184 
 Grassy Lake              7265   35.4    31.6    112    52.6    34.8    151 
 Gros Ventre Summit       8750   19.4    13.0    149    23.5    12.5    188 
 Gunsight Pass            9820   21.7    13.4    162    23.7    13.3    178 
 Lewis Lake Divide        7850   44.3    29.5    150    54.2    34.3    158 
 Phillips Bench           8200   36.5    24.4    150    45.3    27.3    166 
 Salt River Summit        7760   19.4    12.9    150    28.2    16.1    175 
 Snake River Station      6920   17.9    15.3    117    34.5    21.7    159 
 Spring Creek Divide      9000   39.7    22.5    176    39.4    23.1    171 
 Thumb Divide             7980   22.1    14.8    149    27.1    17.9    151 
 Togwotee Pass            9580   32.2    21.7    148    37.0    23.4    158 
 Two Ocean Plateau        9240     -M    25.6       *     -M    26.3       *
 Willow Creek             8380   28.2    28.0    101    47.3    32.4    146 
 Younts Peak              8350   25.2    14.2    177    30.6    15.2    201 
                                                -----                  -----
                Basin Index (%)                  142                    161 
 

MADISON-GALLATIN

 Black Bear               8170   44.7    36.6    122    52.0    36.8    141 
 Canyon                   7870   17.0    12.4    137    24.9    15.7    159 
 Madison Plateau          7750   26.2    21.4    122    35.0    25.4    138 
 West Yellowstone         6700    7.4    10.2     73    22.4    13.6    165 
 Whiskey Creek            6800   13.3    15.0     89    26.0    19.4    134 
                                                -----                  -----
                Basin Index (%)                  114                    145 
 

YELLOWSTONE

 Beartooth Lake           9360   31.6    21.1    150    27.0    19.0    142 
 Burnt Mtn                5880     .8     4.4     18    14.4    12.3    117 
 Canyon                   7870   17.0    12.4    137    24.9    15.7    159 
 Cole Creek               7850   11.3    13.7     82     8.2    12.1     68 
 Evening Star             9200   37.6    23.9    157    43.8    26.3    167 
 Fisher Creek             9100   42.6    30.4    140    46.0    30.5    151 
 Northeast Entrance       7350    8.7     9.5     92    20.0    11.8    169 
 Parker Peak              9400   33.2    18.9    176    33.2    17.0    195 
 Sylvan Lake              8420   23.0    19.2    120    36.0    21.5    167 
 Thumb Divide             7980   22.1    14.8    149    27.1    17.9    151 
 Two Ocean Plateau        9240     -M    25.6       *     -M    26.3       *
 White Mill               8700   35.0    21.7    161    35.3    22.8    155 
 Wolverine                7650    7.2     9.2     78    20.5    11.8    174 
                                                -----                  -----
                Basin Index (%)                  136                    154 
 

WIND RIVER

 Burroughs Creek          8750   22.9      -M       *   27.0      -M       *
 Castle Creek             8400   10.4      -M       *   14.7      -M       *
 Cold Springs             9630   16.9     7.1    238    19.3     9.6    201 
 Deer Park                9700   32.5    14.8    220    37.5    18.8    199 
 Hobbs Park              10100   29.1    13.5    216    27.3    12.7    215 
 Kirwin                   9550   22.2     9.5    234    24.5    11.1    221 
 Little Warm              9370   18.1    10.2    177    23.8    12.3    193 
 Owl Creek                8975    9.2     5.6    164    11.6     5.7    204 
 South Pass               9040   31.1    14.9    209    28.3    16.7    169 
 St. Lawrence Alt         8620     -M     6.8       *   16.8     8.6    195 
 Togwotee Pass            9580   32.2    21.7    148    37.0    23.4    158 
 Townsend Creek           8700   18.4     9.1    202    22.5    11.4    197 
                                                -----                  -----
                Basin Index (%)                  197                    191 
 

BIGHORN BASIN

 Bald Mtn.                9380   18.8    18.8    100    16.2    16.4     99 
 Bear Trap Meadow         8200    4.6     5.1     90     7.7     8.1     95 
 Bone Springs Div         9350   19.0    16.1    118    17.3    14.9    116 
 Grave Springs            8550    6.7     9.0     74     7.4    10.1     73 
 Kirwin                   9550   22.2     9.5    234    24.5    11.1    221 
 Marquette                8760   12.2      -M       *   16.4      -M       *
 Middle Powder            7760    7.0    11.5     61     7.0    11.2     62 
 Owl Creek                8975    9.2     5.6    164    11.6     5.7    204 
 Powder River Pass        9480    8.1    10.0     81    12.0    12.0    100 
 Shell Creek              9580   16.5    14.7    112    13.6    13.2    103 
 Timber Creek             7950    7.2     4.8    150    10.5     7.1    148 
                                                -----                  -----
                Basin Index (%)                  114                    116 
 

SHOSHONE RIVER

 Blackwater               9780   36.9    22.2    166    41.2    19.8    208 
 Evening Star             9200   37.6    23.9    157    43.8    26.3    167 
 Marquette                8760   12.2      -M       *   16.4      -M       *
 Sylvan Road              7120    8.3    11.1     75    29.9    16.1    186 
 Younts Peak              8350   25.2    14.2    177    30.6    15.2    201 
                                                -----                  -----
                Basin Index (%)                  151                    188 
 

POWDER RIVER

 Bear Trap Meadow         8200    4.6     5.1     90     7.7     8.1     95 
 Cloud Peak Reservoir     9860   15.3    14.2    108    17.0    12.7    134 
 Grave Springs            8550    6.7     9.0     74     7.4    10.1     73 
 Hansen Sawmill           8360     -M     6.3       *   13.2     8.2    161 
 Middle Powder            7760    7.0    11.5     61     7.0    11.2     62 
 Powder River Pass        9480    8.1    10.0     81    12.0    12.0    100 
 Soldier Park             8720   14.6      -M       *   13.4      -M       *
                                                -----                  -----
                Basin Index (%)                   84                    103 
 

TONGUE RIVER

 Big Goose                7990   11.3     9.1    124    13.2    10.8    122 
 Bone Springs Div         9350   19.0    16.1    118    17.3    14.9    116 
 Burgess Junction         7880   10.2    11.4     89    11.4    11.8     97 
 Dome Lake                8880   15.7    11.6    135    15.7    13.0    121 
 Little Goose             8870   12.8      -M       *   16.0      -M       *
 Sucker Creek             8880   12.7    11.5    110    12.8    13.8     93 
 Tie Creek                6870    4.4     5.5     80    13.5    11.0    123 
                                                -----                  -----
                Basin Index (%)                  112                    111 
 

BELLE FOURCHE

 Cole Canyon              5910     .0     5.8      0     6.9     8.9     78 
                                                -----                  -----
                Basin Index (%)                    0                     78 
 

CHEYENNE RIVER BASIN

 Blind Park               6890     .0     7.2      0     8.3    11.3     73 
 North Rapid Creek        6130     .0     6.8      0     6.9     9.3     74 
                                                -----                  -----
                Basin Index (%)                    0                     74 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   24.2    20.0    121    25.0    21.5    116 
 Blackhall Mtn            9820   35.2      -M       *   36.4      -M       *
 Columbine                9160   19.0    23.0     83    26.6    24.6    108 
 Divide Peak              8880   15.3    19.6     78    21.8    20.7    105 
 Joe Wright              10120   17.4    20.4     85    27.1    24.8    109 
 Laprele Creek            8375   10.7     9.5    113    12.0    11.9    101 
 Med Bow                 10500   37.0      -M       *   33.9      -M       *
 North French Creek      10130   23.4    28.2     83    26.4    25.8    102 
 Never Summer            10280   21.0    19.8    106    18.2      -M       *
 Old Battle              10000   35.5    30.0    118    37.3    33.9    110 
 Rawah                    9020    9.0    10.4     87    16.2    13.7    118 
 Sage Creek Basin         7850    6.8    12.6     54    15.9    14.0    114 
 Sand Lake               10050   29.8    27.8    107    26.7    23.8    112 
 South Brush Creek        8440    4.7    12.2     39    12.1    14.7     82 
 Tower                   10500   39.1    44.4     88    42.5    38.3    111 
 Webber Springs           9250   25.5    23.0    111    32.5    25.8    126 
 Willow Creek Pass        9540   17.0    11.8    144    17.8    12.9    138 
 Zirkel                   9340   32.8    26.4    124    41.0    27.5    149 
                                                -----                  -----
                Basin Index (%)                   98                    114 
 

SWEETWATER

 Deer Park                9700   32.5    14.8    220    37.5    18.8    199 
 Larsen Creek             9000   17.3    12.1    143    23.0      -M       *
 South Pass               9040   31.1    14.9    209    28.3    16.7    169 
                                                -----                  -----
                Basin Index (%)                  194                    185 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.7    13.6     79    12.1    14.1     86 
 Laprele Creek            8375   10.7     9.5    113    12.0    11.9    101 
 Reno Hill                8400   12.1    13.4     90    13.5    14.6     92 
 Windy Peak               7900    8.4     7.8    108    11.2    10.1    111 
                                                -----                  -----
                Basin Index (%)                   95                     96 
 

LARAMIE RIVER

 Brooklyn Lake           10240   22.6    20.3    111    22.5    20.3    111 
 Cinnabar Park            9574   17.4    20.2     86    21.7    23.2     94 
 Crow Creek               8330     .2     6.9      3     9.0    10.3     87 
 Deadman Hill            10220   20.1    15.7    128    19.5    16.5    118 
 Rawah                    9020    9.0    10.4     87    16.2    13.7    118 
 Roach                    9700   16.2    15.8    103    20.2    18.4    110 
                                                -----                  -----
                Basin Index (%)                   96                    107 
 

S. PLATTE

 Black Mountain           8920   10.7      -M       *   12.3      -M       *
 Crow Creek               8330     .2     6.9      3     9.0    10.3     87 
 Deadman Hill            10220   20.1    15.7    128    19.5    16.5    118 
                                                -----                  -----
                Basin Index (%)                   90                    106 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440     -M    10.5       *   16.3    14.6    112 
 Divide Peak              8880   15.3    19.6     78    21.8    20.7    105 
 Elk River                8700   12.5    18.7     67    19.7    19.4    102 
 Little Snake River       8915   26.4    23.5    112    37.8    28.8    131 
 Old Battle              10000   35.5    30.0    118    37.3    33.9    110 
 Sage Creek Basin         7850    6.8    12.6     54    15.9    14.0    114 
 Sandstone RS             8150    7.2    13.0     55    15.9    17.8     89 
 Whiskey Park             8950   25.1    26.1     96    29.1    27.0    108 
                                                -----                  -----
                Basin Index (%)                   90                    110 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   20.9    12.4    169    22.9    12.7    180 
 Blind Bull Sum           8650   42.2    22.6    187      -M    18.9       *
 East Rim Divide          7930   16.4    10.0    164    20.7    11.4    182 
 Elkhart Park G.S.        9400   18.7    12.1    155    23.7    12.8    185 
 Gros Ventre Summit       8750   19.4    13.0    149    23.5    12.5    188 
 Gunsight Pass            9820   21.7    13.4    162    23.7    13.3    178 
 Kendall R.S.             7740   20.2    11.4    177    28.5    13.8    207 
 Loomis Park              8240   26.3    14.2    185    31.7    16.8    189 
 New Fork Lake            8340   15.3    10.4    147    17.4    10.4    167 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   18.6    12.3    151    27.0    13.8    196 
 Spring Creek Divide      9000   39.7    22.5    176    39.4    23.1    171 
 Triple Peak              8500     -M    21.8       *     -M    24.5       *
                                                -----                  -----
                Basin Index (%)                  168                    184 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869    9.2      -M       *   15.8      -M       *
 Buck Pasture             9632   17.6      -M       *   23.3      -M       *
 EF Blacks Fork GS        9360   15.3      -M       *   17.1      -M       *
 Hams Fork                7840   14.1    10.9    129    21.2    11.0    193 
 Hewinta                  9500    9.0    10.9     83    17.1    13.5    127 
 Hickerson Park           9122    9.8     7.6    129    13.0     9.8    133 
 Hole-in-Rock             9168    7.9     6.9    114    13.6     9.2    148 
 Indian Creek             9425   39.6    24.1    164      -M    21.8       *
 Kelley R.S.              8180   25.1    15.0    167    29.9    17.5    171 
 Spirit Lk               10235   16.5      -M       *   18.7      -M       *
 Steel Creek Park        10158   18.8    15.4    122    20.7    15.8    131 
                                                -----                  -----
                Basin Index (%)                  137                    150 
 

UPPER BEAR RIVER

 Bear River RS            8777    9.4      -M       *   18.4      -M       *
 Bug Lake                 7987   31.8    18.2    175    33.6    18.8    179 
 Burts Miller Ranch       8000    3.4      -M       *   10.0      -M       *
 Chalk Creek #1           9171   33.4    23.6    142    35.8    24.3    147 
 Hayden Fork              9130   19.6    15.2    129    29.5    20.3    145 
 Kelley R.S.              8180   25.1    15.0    167    29.9    17.5    171 
 Lily Lake                9133   13.9    12.2    114    19.8    16.5    120 
 Monte Cristo             8932   35.4    26.6    133    38.4    25.1    153 
 Salt River Summit        7760   19.4    12.9    150    28.2    16.1    175 
                                                -----                  -----
                Basin Index (%)                  144                    155 

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


 -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.