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Basic maintenance and field observation of our monitoring network has resumed to a limited degree. However, due to the COVID-19 pandemic and increased safety protocols the quality of continuous data reporting may still be impacted at some stations.

Stream flow monitoring station

Chehalis River @ Centralia

This station is also a water quality monitoring station

Station details

ID23A120
typeTelemetry  satelite dish   
Latitude46° 42' 47.16"
Longitude-122° 58' 39.36"
Stream class
River mile66.0
Staff leadBrad Hopkins
brad.hopkins@ecy.wa.gov
CountyLewis
Ecoregion
Period of recordFeb 2016 - Present
Water Resource Inventory Area (WRIA)
13 active stations   show historical 
  id station name type* coop
23A120 Chehalis River @ Centralia T
23A190 Chehalis abv Pe Ell T
23B070 Newaukum NR Chehalis T
23B120 SF Newaukum River @ Jorgensen ... T y
23B190 South Fork Newaukum River @ No... T y
23B200 South Fork Newaukum River @ Mi... T y
23C070 North Fork Newaukum River @ Fo... SA y
23E060 Black R. @ Hwy 12 T
23H060 Salzer Creek @ Airport Rd T
23I070 Bunker Creek @ Ceres Hill Rd T
23J070 Stearns Creek @ Twin Oaks Rd T
23K060 South Fork Chehalis @ Hwy 6 T
23L070 Dillenbaugh Creek at Riverside... T y
*  T–telemetry   SA–stand alone   MSH–manual stage height

Station 23A120—Water Temp.

Period of Record: 2016 — 2020

Seven-day graph

Water-year graph

Mean data table


Note: To print table on one page, change page setup to landscape orientation. Adjustment of page margins and/or text size may also be required.

         Washington State Dept. of Ecology                                                            HYDAY V139  Output 01/24/2021

         Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
         Variable 450.30          Water Temperature in Degrees Celsius, Sonde Temp                             Year         2020/21
                                  Figures are for period starting 00:00                                        Table Type     Level

         Day       Oct      Nov      Dec      Jan      Feb      Mar      Apr      May      Jun      Jul      Aug      Sep     Day

           1       15.9!     9.4!     6.9!     7.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      1
           2      [   ]X     9.1!     6.0!     8.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      2
           3       16.5!     8.7!     5.2!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      3
           4       16.6!     8.9!     5.2!     8.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      4
           5       16.7!    10.4!     5.5!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      5
           6       16.8!    10.3!     5.5!     7.8!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      6
           7       17.0!     8.8!     6.4!     8.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
           8       16.9!     7.4!     7.2!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
           9       16.8!     6.3!     7.8!     7.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
          10       16.5!     5.6!     7.9!     6.7!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
          11       15.9!     6.1!     7.0!     7.5!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
          12       13.6!     6.6!     6.1!     8.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
          13       12.8!     6.9!     5.6!     9.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
          14       12.4!     7.7!     5.7!     8.1!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
          15       12.0!     7.7!     6.3!     8.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
          16       11.6!     8.5!     6.8!     8.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
          17       11.7!     8.9!     7.4!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
          18       12.2!     9.3!     7.6!     8.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
          19       12.9!     8.7!     7.7!     7.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
          20       12.9!     8.3!     8.3!     6.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
          21       12.4!     8.3!     8.8!     6.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
          22       11.7!     7.6!     8.5!     6.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
          23       10.6!   [   ]X     7.4!     6.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
          24        9.5!     7.7!     6.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
          25        8.4!     7.7!     5.6!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
          26        8.0!     7.7!     6.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
          27        7.5!     8.0!     7.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
          28        7.3!     7.8!     7.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
          29        7.6!     7.7!     6.5!   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
          30        8.3!     7.3!     5.9!   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
          31        9.1!              6.8!   [   ]             [   ]             [   ]             [   ]    [   ]              31

          Mean     12.6!     8.0!     6.7!     7.7!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
        Median     12.4!     7.8!     6.8!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
Max.Daily Mean     17.0!    10.4!     8.8!     9.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
Min.Daily Mean      7.3!     5.6!     5.2!     6.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
      Inst.Max     17.8!    11.0!     9.0!     9.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
      Inst.Min      7.0!     5.5!     5.0!     5.8!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
  Missing Days        1        1        0        8       28       31       30       31       30       31       31       30

                Summaries               ------------------ Notes -------------------
                ---------               All recorded data is continuous and reliable
                                        except where the following tags are used...
 Annual Mean        8.8!                ! ...  Data not yet checked
 Ann. Median        8.0!                X ...  Data rejected
Missing Days        252                 [    ] Data Not Recorded

                Maximum     Minimum
 Daily Mean        17.0!        5.2!
    Instant        17.8!        5.0!







View downloadable table

Station 23A120—Verified historical data

water-year 2020 graph crosstab / table 15-minute data table technical notes
water-year 2019 graph crosstab / table 15-minute data table technical notes
water-year 2018 graph crosstab / table 15-minute data table technical notes
water-year 2017 graph crosstab / table 15-minute data table technical notes
water-year 2016 graph crosstab / table 15-minute data table technical notes

Water Temp. Monitoring Standard Operating Procedures

    Station 23A120—Diss. Oxygen

    Period of Record: 2016 — 2020

    Seven-day graph

    Water-year graph

    Mean data table


    Note: To print table on one page, change page setup to landscape orientation. Adjustment of page margins and/or text size may also be required.

             Washington State Dept. of Ecology                                                            HYDAY V139  Output 01/24/2021
    
             Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
             Variable 864.00          Dissolved Oxygen in mg/L                                                     Year         2020/21
                                      Figures are for period starting 00:00                                        Table Type     Level
    
             Day       Oct      Nov      Dec      Jan      Feb      Mar      Apr      May      Jun      Jul      Aug      Sep     Day
    
               1       8.20!   10.35!   11.71!   11.41!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      1
               2       8.03!   10.50!   12.01!   11.27!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      2
               3       7.92!   [   ]X   12.23!   10.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      3
               4      [   ]X   10.58!   [   ]X   10.66!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      4
               5       7.89!   10.41!   12.13!   10.73!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      5
               6       7.91!   10.12!   12.14!   10.86!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      6
               7       7.71!   10.49!   11.97!   10.75!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
               8      [   ]X   11.00!   11.63!   10.77!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
               9       7.53!   11.49!   11.35!   11.08!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
              10       7.72!   11.84!   11.30!   11.32!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
              11       7.93!   11.65!   11.51!   11.20!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
              12       8.97!   11.48!   11.85!   11.14!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
              13       9.44!   11.28!   12.05!   10.71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
              14       9.64!   [   ]X   12.07!   10.72!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
              15       9.84!   [   ]X   11.97!   10.51!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
              16      10.01!   [   ]X   11.79!   10.57!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
              17       9.87!   [   ]X   [   ]X   10.82!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
              18      [   ]X   [   ]X   [   ]X   10.81!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
              19       9.56!   [   ]X   [   ]X   11.22!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
              20       9.56!   [   ]X   [   ]X   11.55!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
              21       9.63!   [   ]X   [   ]X   11.65!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
              22       9.79!   [   ]X   [   ]X   11.40!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
              23      10.03!   [   ]X   [   ]X   11.44!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
              24      10.40!   11.28!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
              25      10.78!   11.28!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
              26      11.09!   11.43!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
              27      [   ]X   11.39!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
              28      [   ]X   [   ]X   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
              29      11.45!   11.46!   [   ]X   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
              30      [   ]X   11.50!   [   ]X   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
              31      10.68!            11.70!   [   ]             [   ]             [   ]             [   ]    [   ]              31
    
              Mean     9.26!   11.09!   11.84!   11.03!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
            Median     9.56!   11.28!   11.91!   10.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
    Max.Daily Mean    11.45!   11.84!   12.23!   11.65!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
    Min.Daily Mean     7.53!   10.12!   11.30!   10.51!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
          Inst.Max    11.72!   11.99!   12.28!   11.74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
          Inst.Min     6.94!    9.89!   11.16!   10.42!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
      Missing Days        6       12       15        8       28       31       30       31       30       31       31       30
    
                    Summaries               ------------------ Notes -------------------
                    ---------               All recorded data is continuous and reliable
                                            except where the following tags are used...
     Annual Mean      10.66!                ! ...  Data not yet checked
     Ann. Median      10.99!                X ...  Data rejected
    Missing Days        283                 [    ] Data Not Recorded
    
                    Maximum     Minimum
     Daily Mean       12.23!       7.53!
        Instant       12.28!       6.94!
    
    
    
    
    
    
    

    View downloadable table

    Station 23A120—Verified historical data

    water-year 2020 graph crosstab / table 15-minute data table technical notes
    water-year 2019 graph crosstab / table 15-minute data table technical notes
    water-year 2018 graph crosstab / table 15-minute data table technical notes
    water-year 2017 graph crosstab / table 15-minute data table technical notes
    water-year 2016 graph crosstab / table 15-minute data table technical notes

    Diss. Oxygen Monitoring Standard Operating Procedures

      Station 23A120—pH

      Period of Record: 2016 — 2020

      Seven-day graph

      Water-year graph

      Mean data table


      Note: To print table on one page, change page setup to landscape orientation. Adjustment of page margins and/or text size may also be required.

               Washington State Dept. of Ecology                                                            HYDAY V139  Output 01/24/2021
      
               Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
               Variable 860.00          pH                                                                           Year         2020/21
                                        Figures are for period starting 00:00                                        Table Type     Level
      
               Day       Oct      Nov      Dec      Jan      Feb      Mar      Apr      May      Jun      Jul      Aug      Sep     Day
      
                 1       7.22!    7.38!    7.24!    7.07!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      1
                 2       7.20!    7.38!    7.20!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      2
                 3       7.20!    7.35!    7.22!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      3
                 4       7.19!    7.39!    7.23!    6.63!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      4
                 5       7.20!    7.47!    7.23!    6.71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      5
                 6       7.24!    7.28!    7.24!    6.80!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      6
                 7      [   ]X    7.25!    7.24!    6.86!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
                 8      [   ]X    7.29!    7.23!    6.82!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
                 9       7.21!    7.35!    7.24!    6.89!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
                10       7.26!    7.37!    7.25!    6.92!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
                11       7.33!    7.39!    7.25!    6.95!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
                12       7.32!    7.36!    7.27!    6.90!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
                13       7.25!    7.34!    7.27!    6.78!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
                14       7.29!    7.10!    7.29!   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
                15       7.30!    7.08!    7.29!    6.67!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
                16       7.32!    7.05!    7.29!    6.76!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
                17       7.32!    7.11!    7.18!    6.83!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
                18       7.36!    7.10!    6.97!    6.88!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
                19       7.36!    7.05!    6.89!    6.92!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
                20       7.38!    7.04!   [   ]X    6.96!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
                21       7.36!    7.04!   [   ]X    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
                22       7.35!    7.06!   [   ]X    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
                23       7.35!   [   ]X   [   ]X    7.02!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
                24       7.37!    7.20!    6.64!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
                25       7.39!    7.19!    6.80!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
                26       7.42!    7.18!    6.91!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
                27       7.38!    7.19!    6.89!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
                28       7.34!    7.20!    6.81!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
                29       7.37!    7.21!    6.69!   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
                30       7.39!    7.22!   [   ]X   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
                31       7.37!             7.10!   [   ]             [   ]             [   ]             [   ]    [   ]              31
      
                Mean     7.31!    7.23!    7.11!    6.88!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
              Median     7.33!    7.21!    7.23!    6.89!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
      Max.Daily Mean     7.42!    7.47!    7.29!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
      Min.Daily Mean     7.19!    7.04!    6.64!    6.63!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
            Inst.Max     7.46!    7.52!    7.36!    7.16!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
            Inst.Min     7.14!    6.95!    6.52!    6.51!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
        Missing Days        2        1        5       10       28       31       30       31       30       31       31       30
      
                      Summaries               ------------------ Notes -------------------
                      ---------               All recorded data is continuous and reliable
                                              except where the following tags are used...
       Annual Mean       7.15!                ! ...  Data not yet checked
       Ann. Median       7.22!                X ...  Data rejected
      Missing Days        260                 [    ] Data Not Recorded
      
                      Maximum     Minimum
       Daily Mean        7.47!       6.63!
          Instant        7.52!       6.51!
      
      
      
      
      
      
      

      View downloadable table

      Station 23A120—Verified historical data

      water-year 2020 graph crosstab / table 15-minute data table technical notes
      water-year 2019 graph crosstab / table 15-minute data table technical notes
      water-year 2018 graph crosstab / table 15-minute data table technical notes
      water-year 2017 graph crosstab / table 15-minute data table technical notes
      water-year 2016 graph crosstab / table 15-minute data table technical notes

      pH Monitoring Standard Operating Procedures

        Station 23A120—Conductivity

        Period of Record: 2016 — 2020

        Seven-day graph

        Water-year graph

        Mean data table


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                 Washington State Dept. of Ecology                                                            HYDAY V139  Output 01/24/2021
        
                 Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
                 Variable 821.00          Conductivity in MicroSiemens/Cm                                              Year         2020/21
                                          Figures are for period starting 00:00                                        Table Type     Level
        
                 Day       Oct      Nov      Dec      Jan      Feb      Mar      Apr      May      Jun      Jul      Aug      Sep     Day
        
                   1         86!   [   ]X      69!      57!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      1
                   2         88!   [   ]X      69!      59!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      2
                   3         90!      83!   [   ]X      47!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      3
                   4         91!   [   ]X   [   ]X      48!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      4
                   5         92!      77!   [   ]X      50!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      5
                   6         94!      65!      75!      51!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      6
                   7         96!      77!      74!      53!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
                   8         96!   [   ]X      75!      56!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
                   9         97!   [   ]X   [   ]X      58!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
                  10         97!      83!      75!      61!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
                  11         96!      84!      76!      63!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
                  12         81!   [   ]X      76!      54!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
                  13         72!   [   ]X      77!      43!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
                  14      [   ]X   [   ]X   [   ]X      47!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
                  15         70!      96!   [   ]X      52!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
                  16         72!   [   ]X   [   ]X   [   ]X   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
                  17         74!      75!   [   ]X      60!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
                  18         75!   [   ]X     118!      63!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
                  19         76!   [   ]X     135!      67!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
                  20         76!   [   ]X     151!      69!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
                  21         76!      77!     171!      71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
                  22         77!      78!     181!      72!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
                  23      [   ]X   [   ]X     188!      74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
                  24         78!      64!     196!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
                  25         79!      65!     202!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
                  26         78!      63!     210!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
                  27      [   ]X      65!     218!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
                  28      [   ]X      67!     225!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
                  29         80!      68!     229!   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
                  30         81!      70!   [   ]X   [   ]             [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
                  31         82!               60!   [   ]             [   ]             [   ]             [   ]    [   ]              31
        
                  Mean       83!      74!     134!      58!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
                Median       81!      75!     126!      58!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
        Max.Daily Mean       97!      96!     229!      74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
        Min.Daily Mean       70!      63!      60!      43!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
              Inst.Max      102!     106!     231!      75!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
              Inst.Min       69!      63!      56!      42!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]    [   ]
          Missing Days        4       13        9        9       28       31       30       31       30       31       31       30
        
                        Summaries               ------------------ Notes -------------------
                        ---------               All recorded data is continuous and reliable
                                                except where the following tags are used...
         Annual Mean         88!                ! ...  Data not yet checked
         Ann. Median         76!                X ...  Data rejected
        Missing Days        277                 [    ] Data Not Recorded
        
                        Maximum     Minimum
         Daily Mean         229!         43!
            Instant         231!         42!
        
        
        
        
        
        
        

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        Station 23A120—Verified historical data

        water-year 2020 graph crosstab / table 15-minute data table technical notes
        water-year 2019 graph crosstab / table 15-minute data table technical notes
        water-year 2018 graph crosstab / table 15-minute data table technical notes
        water-year 2017 graph crosstab / table 15-minute data table technical notes
        water-year 2016 graph crosstab / table 15-minute data table technical notes

        Conductivity Monitoring Standard Operating Procedures