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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 4:58a, 5/23/18
Temperature 44.5°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 THURSDAY: MARCH 9 , 2017
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %  
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING
 

SNAKE RIVER  

 Base Camp                7030   26.4    13.8    191      -M    18.1       *
 Black Bear               8170   41.3    31.2    132    46.3    32.8    141 
 Blind Bull Sum           8650   39.1    19.1    205      -M    16.8       *
 Cottonwood Creek         7670   26.6    18.3    145    33.5    20.6    163 
 East Rim Divide          7930   18.3     9.3    197    19.5    10.1    193 
 Grand Targhee            9260   38.8    31.5    123      -M    25.4       *
 Granite Creek            6770   29.1    14.5    201      -M    17.4       *
 Grassy Lake              7265   35.0    27.3    128    48.3    31.0    156 
 Gros Ventre Summit       8750   17.8    10.7    166    21.3    10.8    197 
 Gunsight Pass            9820   18.9    11.5    164    21.6    11.5    188 
 Lewis Lake Divide        7850   35.9    26.1    138      -M    30.5       *
 Phillips Bench           8200   33.4    20.9    160    39.4    24.0    164 
 Salt River Summit        7760   20.2    11.0    184    25.4    14.1    180 
 Snake River Station      6920   21.7    15.0    145      -M    19.5       *
 Spring Creek Divide      9000   35.6    19.5    183      -M    20.3       *
 Thumb Divide             7980   21.2    13.0    163      -M    15.6       *
 Togwotee Pass            9580   29.3    19.3    152    33.3    20.5    162 
 Two Ocean Plateau        9240     -M    22.7       *     -M    23.1       *
 Willow Creek             8380   29.5    24.0    123    43.9    28.1    156 
 Younts Peak              8350   25.0    12.2    205    27.0    13.3    203 
                                                -----                  -----
                Basin Index (%)                  156                    166 
 

MADISON-GALLATIN

 Black Bear               8170   41.3    31.2    132    46.3    32.8    141 
 Canyon                   7870   16.2    11.4    142    22.4    13.9    161 
 Madison Plateau          7750   24.6    19.0    129    32.1    22.6    142 
 West Yellowstone         6700   12.4     9.5    131    20.6    12.3    167 
 Whiskey Creek            6800   15.0    13.0    115    23.6    17.2    137 
                                                -----                  -----
                Basin Index (%)                  130                    147 
 

YELLOWSTONE

 Beartooth Lake           9360   27.3    18.1    151    22.7    16.7    136 
 Burnt Mtn                5880    5.4     4.4    123    11.5    10.0    115 
 Canyon                   7870   16.2    11.4    142    22.4    13.9    161 
 Cole Creek               7850    9.0    11.0     82     6.5     9.8     66 
 Evening Star             9200   32.6    20.6    158      -M    23.2       *
 Fisher Creek             9100   36.2    26.7    136    39.7    26.9    148 
 Northeast Entrance       7350   11.4     8.6    133    16.9    10.4    162 
 Parker Peak              9400   28.6    16.5    173    23.5    14.8    159 
 Sylvan Lake              8420   21.8    16.8    130    33.0    18.9    175 
 Thumb Divide             7980   21.2    13.0    163      -M    15.6       *
 Two Ocean Plateau        9240     -M    22.7       *     -M    23.1       *
 White Mill               8700     -M    19.0       *   29.6    20.1    147 
 Wolverine                7650   13.1     9.0    146    18.5    10.4    178 
                                                -----                  -----
                Basin Index (%)                  143                    148 
 

WIND RIVER

 Burroughs Creek          8750   21.4      -M       *   23.5      -M       *
 Castle Creek             8400   11.8      -M       *   14.0      -M       *
 Cold Springs             9630   12.3     5.8    212    14.6     7.9    185 
 Deer Park                9700   28.3    11.8    240    30.6    16.1    190 
 Hobbs Park              10100   22.2    10.8    206    20.2    10.2    198 
 Kirwin                   9550   17.3     7.6    228    19.8     9.3    213 
 Little Warm              9370   14.9     8.6    173    20.4    10.4    196 
 Owl Creek                8975    7.0     4.3    163     8.7     4.5    193 
 South Pass               9040   26.2    12.4    211    23.4    14.4    162 
 St. Lawrence Alt         8620    7.2     5.8    124    12.0     6.9    174 
 Togwotee Pass            9580   29.3    19.3    152    33.3    20.5    162 
 Townsend Creek           8700   12.6     7.3    173    15.7     9.2    171 
                                                -----                  -----
                Basin Index (%)                  189                    182 
 

BIGHORN BASIN

 Bald Mtn.                9380   16.2    15.9    102    14.0    13.8    101 
 Bear Trap Meadow         8200    5.0     4.6    109     6.0     6.5     92 
 Bone Springs Div         9350   14.5    13.2    110    13.9    12.4    112 
 Grave Springs            8550    5.8     7.3     79     6.2     8.2     76 
 Kirwin                   9550   17.3     7.6    228    19.8     9.3    213 
 Marquette                8760    7.7      -M       *   11.8      -M       *
 Middle Powder            7760    6.6     8.7     76     6.1     9.2     66 
 Owl Creek                8975    7.0     4.3    163     8.7     4.5    193 
 Powder River Pass        9480    6.8     8.3     82     9.8    10.1     97 
 Shell Creek              9580   13.6    12.2    111    10.7    11.1     96 
 Timber Creek             7950    5.4     4.0    135     6.9     5.5    125 
                                                -----                  -----
                Basin Index (%)                  114                    113 
 

SHOSHONE RIVER

 Blackwater               9780   32.6    18.8    173    34.8    17.0    205 
 Evening Star             9200   32.6    20.6    158      -M    23.2       *
 Marquette                8760    7.7      -M       *   11.8      -M       *
 Sylvan Road              7120   15.2    10.0    152    26.8    14.6    184 
 Younts Peak              8350   25.0    12.2    205    27.0    13.3    203 
                                                -----                  -----
                Basin Index (%)                  171                    197 
 

POWDER RIVER

 Bear Trap Meadow         8200    5.0     4.6    109     6.0     6.5     92 
 Cloud Peak Reservoir     9860   10.9    11.5     95    12.2    10.2    120 
 Grave Springs            8550    5.8     7.3     79     6.2     8.2     76 
 Hansen Sawmill           8360    7.1     5.1    139     9.0     6.5    138 
 Middle Powder            7760    6.6     8.7     76     6.1     9.2     66 
 Powder River Pass        9480    6.8     8.3     82     9.8    10.1     97 
 Soldier Park             8720   10.8      -M       *    8.7      -M       *
                                                -----                  -----
                Basin Index (%)                   93                     97 
 

TONGUE RIVER

 Big Goose                7990    8.0     6.7    119     8.9     8.3    107 
 Bone Springs Div         9350   14.5    13.2    110    13.9    12.4    112 
 Burgess Junction         7880    8.0     9.1     88     8.7     9.6     91 
 Dome Lake                8880   11.6     9.3    125    11.4    10.5    109 
 Little Goose             8870    8.6      -M       *   11.1      -M       *
 Sucker Creek             8880    9.5     9.9     96     9.3    11.2     83 
 Tie Creek                6870    5.4     4.7    115     9.5     8.9    107 
                                                -----                  -----
                Basin Index (%)                  108                    101 
 

BELLE FOURCHE

 Cole Canyon              5910    3.2     5.0     64     5.8     7.3     79 
                                                -----                  -----
                Basin Index (%)                   64                     79 
 

CHEYENNE RIVER BASIN

 Blind Park               6890    3.9     6.7     58     7.0     9.9     71 
 North Rapid Creek        6130    4.6     6.2     74     5.9     8.0     74 
                                                -----                  -----
                Basin Index (%)                   66                     72 
 

UPPER N. PLATTE

 Arapaho Ridge           10960   23.3    17.5    133    23.4    18.5    126 
 Blackhall Mtn            9820   34.3      -M       *   32.7      -M       *
 Columbine                9160   23.7    20.9    113    25.7    21.4    120 
 Divide Peak              8880   18.6    16.8    111    20.7    17.8    116 
 Joe Wright              10120   17.8    18.2     98    25.6    21.2    121 
 Laprele Creek            8375   11.0     8.3    133    10.2     9.9    103 
 Med Bow                 10500   35.2      -M       *   30.8      -M       *
 North French Creek      10130   23.1    22.5    103    24.0    22.2    108 
 Never Summer            10280   21.1    16.8    126    17.1      -M       *
 Old Battle              10000   34.8    25.3    138    35.5    29.4    121 
 Rawah                    9020   12.1     9.2    132    14.9    11.4    131 
 Sage Creek Basin         7850   15.5    11.3    137    15.2    12.3    124 
 Sand Lake               10050   27.1    22.3    122    24.9    20.1    124 
 South Brush Creek        8440   10.6    11.1     95    11.0    12.4     89 
 Tower                   10500   39.0    37.9    103    41.3    33.6    123 
 Webber Springs           9250   28.0    20.0    140    31.3    22.3    140 
 Willow Creek Pass        9540   16.2    10.2    159    17.1    10.9    157 
 Zirkel                   9340   39.2    25.0    157    38.9    24.1    161 
                                                -----                  -----
                Basin Index (%)                  123                    125 
 

SWEETWATER

 Deer Park                9700   28.3    11.8    240    30.6    16.1    190 
 Larsen Creek             9000   19.2    10.2    188    21.0      -M       *
 South Pass               9040   26.2    12.4    211    23.4    14.4    162 
                                                -----                  -----
                Basin Index (%)                  214                    177 
 

LOWER N. PLATTE

 Casper Mtn.              7900   10.8    11.3     96    10.1    11.8     86 
 Laprele Creek            8375   11.0     8.3    133    10.2     9.9    103 
 Reno Hill                8400   10.8    11.1     97    11.3    11.9     95 
 Windy Peak               7900    9.6     6.4    150     9.9     8.4    118 
                                                -----                  -----
                Basin Index (%)                  114                     99 
 

LARAMIE RIVER

 Brooklyn Lake           10240   23.0    16.5    139    20.6    17.2    120 
 Cinnabar Park            9574   17.8    17.7    101    20.2    20.6     98 
 Crow Creek               8330    4.6     7.0     66     7.6     8.4     90 
 Deadman Hill            10220   19.0    12.8    148    18.1    13.7    132 
 Rawah                    9020   12.1     9.2    132    14.9    11.4    131 
 Roach                    9700   15.3    13.2    116    18.2    15.7    116 
                                                -----                  -----
                Basin Index (%)                  120                    114 
 

S. PLATTE

 Black Mountain           8920    9.3      -M       *   10.5      -M       *
 Crow Creek               8330    4.6     7.0     66     7.6     8.4     90 
 Deadman Hill            10220   19.0    12.8    148    18.1    13.7    132 
                                                -----                  -----
                Basin Index (%)                  119                    116 
 

LITTLE SNAKE RIVER

 Battle Mountain          7440   10.9    10.4    105    15.2    12.8    119 
 Divide Peak              8880   18.6    16.8    111    20.7    17.8    116 
 Elk River                8700   20.1    16.7    120    19.0    16.9    112 
 Little Snake River       8915   31.0    20.2    153    34.6    25.7    135 
 Old Battle              10000   34.8    25.3    138    35.5    29.4    121 
 Sage Creek Basin         7850   15.5    11.3    137    15.2    12.3    124 
 Sandstone RS             8150   12.3    11.8    104    15.1    15.8     96 
 Whiskey Park             8950   26.3    23.0    114    27.7    23.6    117 
                                                -----                  -----
                Basin Index (%)                  125                    119 
 

UPPER GREEN RIVER

 Big Sandy Opening        9080   19.8    10.6    187    21.0    11.1    189 
 Blind Bull Sum           8650   39.1    19.1    205      -M    16.8       *
 East Rim Divide          7930   18.3     9.3    197    19.5    10.1    193 
 Elkhart Park G.S.        9400   17.1    10.0    171      -M    11.1       *
 Gros Ventre Summit       8750   17.8    10.7    166    21.3    10.8    197 
 Gunsight Pass            9820   18.9    11.5    164    21.6    11.5    188 
 Kendall R.S.             7740   22.3    10.4    214      -M    12.4       *
 Loomis Park              8240   26.0    12.5    208      -M    14.8       *
 New Fork Lake            8340   15.7     8.9    176    15.7     9.2    171 
 Pocket Creek             9360     -M      -M       *     -M      -M       *
 Snider Basin             8060   20.0    10.5    190    25.1    12.1    207 
 Spring Creek Divide      9000   35.6    19.5    183      -M    20.3       *
 Triple Peak              8500   34.5    18.3    189    36.6    21.4    171 
                                                -----                  -----
                Basin Index (%)                  188                    187 
 

LOWER GREEN RIVER

 Blacks Fork Jct          8869   10.7      -M       *   13.6      -M       *
 Buck Pasture             9632   18.6      -M       *   20.6      -M       *
 EF Blacks Fork GS        9360   15.5      -M       *     -M      -M       *
 Hams Fork                7840   17.4     9.9    176    18.2     9.6    190 
 Hewinta                  9500   12.6     8.6    147    14.2    11.4    125 
 Hickerson Park           9122    8.4     6.3    133     8.4     8.0    105 
 Hole-in-Rock             9168    6.8     6.0    113     9.1     7.5    121 
 Indian Creek             9425   36.4    20.0    182      -M    18.8       *
 Kelley R.S.              8180   23.5    12.6    187    27.4    15.3    179 
 Spirit Lk               10235   13.6      -M       *   14.7      -M       *
 Steel Creek Park        10158   15.3    12.4    123    17.1    13.1    131 
                                                -----                  -----
                Basin Index (%)                  159                    145 
 

UPPER BEAR RIVER

 Bear River RS            8777   13.3      -M       *   15.4      -M       *
 Bug Lake                 7987   30.4    15.9    191    28.6    16.2    177 
 Burts Miller Ranch       8000    8.0      -M       *    8.3      -M       *
 Chalk Creek #1           9171   31.7    19.6    162    32.0    20.6    155 
 Hayden Fork              9130   23.2    13.0    178      -M    17.2       *
 Kelley R.S.              8180   23.5    12.6    187    27.4    15.3    179 
 Lily Lake                9133   14.3    10.9    131    17.0    14.0    121 
 Monte Cristo             8932   33.4    22.7    147      -M    21.5       *
 Salt River Summit        7760   20.2    11.0    184    25.4    14.1    180 
                                                -----                  -----
                Basin Index (%)                  167                    163 

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


 -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.