COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-07-05 08:43 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-07-05 00:001286.51    2026-07-05 17:001287.13
2026-07-04 00:001286.25    2026-07-05 23:001287.25
2026-07-03 00:001285.87    2026-07-06 05:001287.38
2026-07-02 00:001285.6    2026-07-06 11:001287.5
2026-07-01 00:001285.76    2026-07-06 17:001287.63
2026-06-30 00:001285.92    2026-07-06 23:001287.75
2026-06-29 00:001285.92    2026-07-07 05:001287.88
2026-06-28 00:001285.37    2026-07-07 11:001288
2026-06-27 00:001285    2026-07-07 17:001288.13
2026-06-26 00:001285.19    2026-07-07 23:001288.25
2026-06-25 00:001285.39    2026-07-08 05:001288.37
      2026-07-08 11:001288.5
      2026-07-08 17:001288.62
      2026-07-08 23:001288.75
      2026-07-09 05:001288.87
      2026-07-09 11:001289
      2026-07-09 17:001289.02
      2026-07-09 23:001289.03
      2026-07-10 05:001289.05
      2026-07-10 11:001289.07
      2026-07-10 17:001289.09
      2026-07-10 23:001289.1
      2026-07-11 05:001289.12
      2026-07-11 11:001289.14
      2026-07-11 17:001289.16
      2026-07-11 23:001289.17
      2026-07-12 05:001289.19
      2026-07-12 11:001289.21
      2026-07-12 17:001289.23
      2026-07-12 23:001289.24
      2026-07-13 05:001289.26
      2026-07-13 11:001289.28
      2026-07-13 17:001289.3
      2026-07-13 23:001289.31
      2026-07-14 05:001289.33
      2026-07-14 11:001289.35
      2026-07-14 17:001289.36
      2026-07-14 23:001289.38
      2026-07-15 05:001289.4