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Field maintenance of the monitoring network has been postponed due to the COVID-19 pandemic, therefore data quality may be impacted. Maintenance will resume once directed by state government authority.

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)
12 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
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 — 2019

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 04/07/2020

         Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
         Variable 450.30          Water Temperature in Degrees Celsius, Sonde Temp                             Year         2019/20
                                  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       13.7!     4.9!     1.9!     7.8!     9.3!     6.4!     7.5!   [   ]    [   ]    [   ]    [   ]    [   ]      1
           2       12.8!     4.8!     1.5!     8.1!     7.7!     6.1!     7.7!   [   ]    [   ]    [   ]    [   ]    [   ]      2
           3       12.3!     5.1!     2.0!     7.7!     6.6!     6.7!     7.3!   [   ]    [   ]    [   ]    [   ]    [   ]      3
           4       11.9!     5.6!     3.1!     7.8!     5.9!     8.0!     7.0!   [   ]    [   ]    [   ]    [   ]    [   ]      4
           5       11.9!     6.2!     4.2!     7.2!     5.8!     8.1!     7.9!   [   ]    [   ]    [   ]    [   ]    [   ]      5
           6       12.2!     6.6!     5.3!     7.2!     7.4!     7.4!     8.9!   [   ]    [   ]    [   ]    [   ]    [   ]      6
           7       12.5!     6.7!     6.3!     8.3!     8.5!     7.1!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
           8       12.7!     6.6!     7.1!     8.3!     8.1!     6.8!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
           9       12.3!     6.7!     7.5!     7.2!     7.3!     6.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
          10       12.0!     6.9!     7.6!     6.7!     6.9!     6.1!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
          11       11.1!     7.5!     7.4!     7.0!     6.5!     6.7!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
          12       10.3!     8.1!     7.0!     7.0!     6.9!     7.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
          13       10.0!     8.7!     7.1!     6.3!     7.2!     7.1!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
          14        9.7!     9.2!     7.1!     5.9!     6.6!     6.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
          15      [   ]X     9.4!     6.8!     5.0!     6.9!     5.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
          16       10.1!     9.5!     6.5!     5.1!     6.6!     5.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
          17       10.4!     9.7!     5.8!     5.3!     6.5!     6.2!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
          18       10.4!     9.5!     5.3!     5.4!     6.3!     6.5!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
          19       10.0!     9.5!     5.2!     6.6!     5.8!     6.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
          20        9.7!     9.0!     7.6!     7.4!     5.3!     7.6!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
          21        9.9!     7.8!     8.9!     7.3!     5.3!     8.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
          22       10.7!     6.8!     8.2!     7.1!     5.6!     8.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
          23       11.3!     6.1!     7.8!     7.8!     6.2!     9.3!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
          24       10.6!     5.6!     7.0!     8.5!     6.9!     9.4!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
          25       10.2!     5.5!     6.4!     8.6!     6.6!     8.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
          26        9.8!     5.5!     6.3!     8.6!     6.7!     8.0!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
          27        9.2!     5.3!     6.0!   [   ]X     7.3!     7.8!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
          28        8.4!     4.7!     6.1!     8.0!     7.4!     7.9!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
          29        7.3!     3.9!     6.7!     8.4!     6.9!     8.7!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
          30        6.3!     2.8!     7.2!     8.1!              8.8!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
          31        5.4!              7.5!     8.4!              7.9!            [   ]             [   ]    [   ]              31

          Mean     10.5!     6.8!     6.1!     7.3!     6.8!     7.4!     7.7!   [   ]    [   ]    [   ]    [   ]    [   ]
        Median     10.4!     6.7!     6.7!     7.4!     6.7!     7.3!     7.6!   [   ]    [   ]    [   ]    [   ]    [   ]
Max.Daily Mean     13.7!     9.7!     8.9!     8.6!     9.3!     9.4!     8.9!   [   ]    [   ]    [   ]    [   ]    [   ]
Min.Daily Mean      5.4!     2.8!     1.5!     5.0!     5.3!     5.2!     7.0!   [   ]    [   ]    [   ]    [   ]    [   ]
      Inst.Max     14.4!     9.8!     9.0!     9.2!     9.5!     9.7!     9.4!   [   ]    [   ]    [   ]    [   ]    [   ]
      Inst.Min      5.0!     2.3!     1.3!     4.8!     5.1!     4.8!     6.7!   [   ]    [   ]    [   ]    [   ]    [   ]
  Missing Days        1        0        0        1        0        0       24       31       30       31       31       30

                Summaries               ------------------ Notes -------------------
                ---------               All recorded data is continuous and reliable
                                        except where the following tags are used...
 Annual Mean        7.5!                ! ...  Data not yet checked
 Ann. Median        7.2!                X ...  Data rejected
Missing Days        179                 [    ] Data Not Recorded

                Maximum     Minimum
 Daily Mean        13.7!        1.5!
    Instant        14.4!        1.3!







View downloadable table

Station 23A120—Verified historical data

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 — 2019

    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 04/07/2020
    
             Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
             Variable 864.00          Dissolved Oxygen in mg/L                                                     Year         2019/20
                                      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      [   ]X   12.28!   13.31!   11.15!   10.95!   11.81!   11.58!   [   ]    [   ]    [   ]    [   ]    [   ]      1
               2       8.77!   12.44!   13.75!   11.24!   11.46!   12.03!   11.56!   [   ]    [   ]    [   ]    [   ]    [   ]      2
               3       9.18!   12.43!   13.69!   [   ]X   11.63!   11.82!   11.67!   [   ]    [   ]    [   ]    [   ]    [   ]      3
               4       9.27!   12.16!   13.38!   11.38!   11.83!   11.39!   11.73!   [   ]    [   ]    [   ]    [   ]    [   ]      4
               5       9.00!   [   ]X   12.91!   11.70!   11.98!   11.28!   11.38!   [   ]    [   ]    [   ]    [   ]    [   ]      5
               6       9.31!   11.63!   [   ]X   11.75!   11.61!   11.41!   11.00!   [   ]    [   ]    [   ]    [   ]    [   ]      6
               7       9.31!   [   ]X   [   ]X   11.06!   11.25!   11.49!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
               8       9.31!   [   ]X   11.43!   10.76!   11.31!   11.63!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
               9       9.24!   11.47!   11.31!   10.90!   11.62!   11.88!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
              10       9.33!   [   ]X   11.25!   11.15!   11.68!   12.07!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
              11       9.55!   11.43!   [   ]X   11.47!   11.76!   11.90!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
              12       9.89!   11.11!   11.44!   11.53!   11.68!   11.62!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
              13      10.13!   10.75!   11.51!   11.63!   11.45!   11.58!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
              14      10.28!   [   ]X   11.38!   11.64!   11.61!   11.69!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
              15      [   ]X   10.48!   [   ]X   11.89!   11.58!   12.09!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
              16      10.37!   10.48!   11.85!   11.85!   11.72!   12.22!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
              17      10.21!   10.40!   12.14!   11.87!   11.86!   12.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
              18      10.06!   [   ]X   12.25!   12.04!   11.93!   11.79!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
              19      10.34!   [   ]X   12.23!   11.83!   12.03!   11.67!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
              20      10.53!   10.57!   11.08!   11.52!   12.15!   11.50!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
              21      10.64!   [   ]X   10.05!   11.44!   12.14!   11.33!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
              22      10.46!   11.39!   10.10!   11.62!   12.00!   11.06!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
              23      10.39!   11.74!   10.04!   11.56!   11.77!   10.96!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
              24      10.63!   12.19!   [   ]X   11.32!   11.67!   10.80!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
              25      10.71!   12.31!   10.92!   11.16!   11.86!   11.14!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
              26      10.65!   12.14!   [   ]X   11.00!   11.85!   11.45!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
              27      10.76!   [   ]X   11.36!   [   ]    11.56!   11.53!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
              28      10.99!   12.09!   11.52!   11.27!   11.49!   11.36!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
              29      11.34!   12.42!   11.39!   11.13!   11.51!   11.18!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
              30      11.69!   12.87!   [   ]X   11.17!            11.16!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
              31      12.08!            11.17!   11.11!            11.41!            [   ]             [   ]    [   ]              31
    
              Mean    10.15!   11.66!   11.73!   11.42!   11.69!   11.56!   11.49!   [   ]    [   ]    [   ]    [   ]    [   ]
            Median    10.28!   11.74!   11.43!   11.44!   11.68!   11.53!   11.57!   [   ]    [   ]    [   ]    [   ]    [   ]
    Max.Daily Mean    12.08!   12.87!   13.75!   12.04!   12.15!   12.22!   11.73!   [   ]    [   ]    [   ]    [   ]    [   ]
    Min.Daily Mean     8.77!   10.40!   10.04!   10.76!   10.95!   10.80!   11.00!   [   ]    [   ]    [   ]    [   ]    [   ]
          Inst.Max    12.30!   13.08!   13.94!   12.11!   12.24!   12.41!   11.90!   [   ]    [   ]    [   ]    [   ]    [   ]
          Inst.Min     8.28!    9.95!    9.87!   10.71!   10.81!   10.55!   10.72!   [   ]    [   ]    [   ]    [   ]    [   ]
      Missing Days        2        9        7        2        0        0       24       31       30       31       31       30
    
                    Summaries               ------------------ Notes -------------------
                    ---------               All recorded data is continuous and reliable
                                            except where the following tags are used...
     Annual Mean      11.35!                ! ...  Data not yet checked
     Ann. Median      11.47!                X ...  Data rejected
    Missing Days        197                 [    ] Data Not Recorded
    
                    Maximum     Minimum
     Daily Mean       13.75!       8.77!
        Instant       13.94!       8.28!
    
    
    
    
    
    
    

    View downloadable table

    Station 23A120—Verified historical data

    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 — 2019

      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 04/07/2020
      
               Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
               Variable 860.00          pH                                                                           Year         2019/20
                                        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       7.46!    7.16!    7.22!   [   ]X    6.91!    6.99!    7.08!   [   ]    [   ]    [   ]    [   ]    [   ]      1
                 2       7.47!    7.15!    7.22!   [   ]X    6.92!    6.95!    7.09!   [   ]    [   ]    [   ]    [   ]    [   ]      2
                 3       7.49!    7.14!    7.23!   [   ]X    6.85!    6.96!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]      3
                 4       7.47!    7.14!    7.23!   [   ]X    6.80!    6.98!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]      4
                 5       7.46!    7.13!    7.21!   [   ]X    6.83!    6.99!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]      5
                 6       7.47!    7.12!    7.19!   [   ]X    6.90!    6.98!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]      6
                 7       7.48!    7.09!    7.20!   [   ]X    6.83!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
                 8       7.48!    7.11!    7.19!   [   ]X    6.84!    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
                 9       7.46!    7.11!    7.20!   [   ]X    6.83!    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
                10       7.49!    7.11!    7.19!   [   ]X    6.80!    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
                11       7.51!    7.12!    7.20!   [   ]X    6.79!    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
                12       7.50!    7.12!    7.19!   [   ]X    6.79!    7.00!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
                13       7.49!    7.13!    7.07!   [   ]X    6.80!    6.99!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
                14       7.48!    7.12!    7.01!   [   ]X    6.82!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
                15      [   ]     7.13!    7.05!   [   ]X    6.85!    7.03!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
                16       7.16!    7.15!    7.13!   [   ]X    6.90!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
                17       7.16!    7.16!    7.19!   [   ]X    6.90!    7.00!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
                18       7.17!    7.17!    7.21!   [   ]X    6.88!    7.00!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
                19       7.11!    7.17!    7.23!   [   ]X    6.88!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
                20       6.94!    7.21!   [   ]X   [   ]X    6.87!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
                21       7.01!    7.19!   [   ]X   [   ]X    6.86!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
                22       7.06!    7.18!   [   ]X   [   ]X    6.86!    7.02!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
                23       7.08!    7.20!   [   ]X   [   ]X    6.88!    7.03!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
                24       7.08!    7.20!   [   ]X   [   ]X    6.93!    7.06!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
                25       7.09!    7.20!   [   ]X   [   ]X    6.90!    7.11!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
                26       7.10!    7.22!   [   ]X   [   ]X    6.89!    7.11!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
                27       7.13!    7.23!   [   ]X   [   ]X    6.90!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
                28       7.13!    7.22!   [   ]X    6.89!    6.90!    7.12!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
                29       7.14!    7.24!   [   ]X    6.86!    6.93!    7.15!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
                30       7.16!    7.24!   [   ]X    6.83!             7.13!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
                31       7.16!            [   ]X    6.84!             7.05!            [   ]             [   ]    [   ]              31
      
                Mean     7.28!    7.16!    7.18!    6.86!    6.86!    7.03!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]
              Median     7.16!    7.15!    7.20!    6.85!    6.87!    7.01!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]
      Max.Daily Mean     7.51!    7.24!    7.23!    6.89!    6.93!    7.15!    7.10!   [   ]    [   ]    [   ]    [   ]    [   ]
      Min.Daily Mean     6.94!    7.09!    7.01!    6.83!    6.79!    6.95!    7.08!   [   ]    [   ]    [   ]    [   ]    [   ]
            Inst.Max     7.52!    7.28!    7.26!    6.92!    6.97!    7.21!    7.12!   [   ]    [   ]    [   ]    [   ]    [   ]
            Inst.Min     6.91!    6.98!    6.95!    6.81!    6.77!    6.94!    7.01!   [   ]    [   ]    [   ]    [   ]    [   ]
        Missing Days        1        0       12       27        0        0       24       31       30       31       31       30
      
                      Summaries               ------------------ Notes -------------------
                      ---------               All recorded data is continuous and reliable
                                              except where the following tags are used...
       Annual Mean       7.09!                ! ...  Data not yet checked
       Ann. Median       7.10!                X ...  Data rejected
      Missing Days        217                 [    ] Data Not Recorded
      
                      Maximum     Minimum
       Daily Mean        7.51!       6.79!
          Instant        7.52!       6.77!
      
      
      
      
      
      
      

      View downloadable table

      Station 23A120—Verified historical data

      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 — 2019

        Seven-day graph

        Water-year graph

        Mean data table


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                 Washington State Dept. of Ecology                                                            HYDAY V139  Output 04/07/2020
        
                 Site     23A120          Chehalis River @ Centralia                                                   Site       23A120.AT
                 Variable 821.00          Conductivity in MicroSiemens/Cm                                              Year         2019/20
                                          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         91!      82!      84!      70!      51!      66!      55!   [   ]    [   ]    [   ]    [   ]    [   ]      1
                   2         90!      83!      85!      57!      50!      66!      57!   [   ]    [   ]    [   ]    [   ]    [   ]      2
                   3         90!   [   ]X      85!      59!      55!      67!      59!   [   ]    [   ]    [   ]    [   ]    [   ]      3
                   4         91!      85!      84!      57!      59!      67!      61!   [   ]    [   ]    [   ]    [   ]    [   ]      4
                   5         92!   [   ]X      84!      57!      60!      67!      64!   [   ]    [   ]    [   ]    [   ]    [   ]      5
                   6         93!      86!   [   ]X      55!      53!      67!      66!   [   ]    [   ]    [   ]    [   ]    [   ]      6
                   7         94!   [   ]X      85!      44!      46!      66!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      7
                   8         93!      87!      86!      48!      47!      66!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      8
                   9         93!   [   ]X   [   ]X      51!      51!      67!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]      9
                  10         92!   [   ]X      82!      54!      55!      68!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     10
                  11         91!   [   ]X      83!      51!      58!      68!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     11
                  12         90!      89!      79!      50!      61!      70!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     12
                  13         89!      89!      68!      53!      63!      71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     13
                  14         88!   [   ]X      63!      56!      65!      72!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     14
                  15      [   ]X   [   ]X      64!      60!      65!      70!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     15
                  16         90!   [   ]X   [   ]X   [   ]X      61!      71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     16
                  17         90!      90!      68!      64!      59!      72!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     17
                  18         91!   [   ]X   [   ]X      67!      61!      73!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     18
                  19         77!   [   ]X      71!      67!      64!      74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     19
                  20         66!      85!      55!      68!      66!      74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     20
                  21         68!      79!      47!      71!      67!      75!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     21
                  22         70!   [   ]X      51!      68!      69!      76!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     22
                  23         67!      80!      54!      58!      71!      77!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     23
                  24         68!   [   ]X      58!      49!      68!      77!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     24
                  25         70!      82!      62!      52!      69!      74!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     25
                  26         73!   [   ]X   [   ]X      54!      71!      71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     26
                  27         76!      81!      71!   [   ]X      72!      70!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     27
                  28         77!   [   ]X      75!      51!      72!      71!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     28
                  29         79!   [   ]X      79!      51!      71!      70!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     29
                  30         81!      83!      81!      52!               57!   [   ]    [   ]    [   ]    [   ]    [   ]    [   ]     30
                  31         83!               83!      54!               54!            [   ]             [   ]    [   ]              31
        
                  Mean       83!      84!      73!      57!      61!      70!      60!   [   ]    [   ]    [   ]    [   ]    [   ]
                Median       89!      84!      77!      55!      61!      70!      60!   [   ]    [   ]    [   ]    [   ]    [   ]
        Max.Daily Mean       94!      90!      86!      71!      72!      77!      66!   [   ]    [   ]    [   ]    [   ]    [   ]
        Min.Daily Mean       66!      79!      47!      44!      46!      54!      55!   [   ]    [   ]    [   ]    [   ]    [   ]
              Inst.Max       94!      91!      86!      84!      72!      78!      67!   [   ]    [   ]    [   ]    [   ]    [   ]
              Inst.Min       64!      77!      45!      43!      45!      53!      55!   [   ]    [   ]    [   ]    [   ]    [   ]
          Missing Days        1       16        5        2        0        0       24       31       30       31       31       30
        
                        Summaries               ------------------ Notes -------------------
                        ---------               All recorded data is continuous and reliable
                                                except where the following tags are used...
         Annual Mean         70!                ! ...  Data not yet checked
         Ann. Median         69!                X ...  Data rejected
        Missing Days        201                 [    ] Data Not Recorded
        
                        Maximum     Minimum
         Daily Mean          94!         44!
            Instant          94!         43!
        
        
        
        
        
        
        

        View downloadable table

        Station 23A120—Verified historical data

        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