COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-08-01 08:44 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-08-02 00:001284.44    2026-08-02 05:001284.14
2026-08-01 00:001285.01    2026-08-02 11:001284.03
2026-07-31 00:001285.45    2026-08-02 17:001283.92
2026-07-30 00:001285.69    2026-08-02 23:001283.81
2026-07-29 00:001285.89    2026-08-03 05:001283.71
2026-07-28 00:001286.37    2026-08-03 11:001283.6
2026-07-27 00:001286.63    2026-08-03 17:001283.49
2026-07-26 00:001286.83    2026-08-03 23:001283.39
2026-07-25 00:001287.5    2026-08-04 05:001283.28
2026-07-24 00:001287.9    2026-08-04 11:001283.17
2026-07-23 00:001288.07    2026-08-04 17:001283.07
      2026-08-04 23:001282.96
      2026-08-05 05:001282.86
      2026-08-05 11:001282.75
      2026-08-05 17:001282.65
      2026-08-05 23:001282.54
      2026-08-06 05:001282.43
      2026-08-06 11:001282.33
      2026-08-06 17:001282.22
      2026-08-06 23:001282.11
      2026-08-07 05:001282.01
      2026-08-07 11:001281.9
      2026-08-07 17:001281.79
      2026-08-07 23:001281.69
      2026-08-08 05:001281.6
      2026-08-08 11:001281.52
      2026-08-08 17:001281.45
      2026-08-08 23:001281.37
      2026-08-09 05:001281.3
      2026-08-09 11:001281.22
      2026-08-09 17:001281.15
      2026-08-09 23:001281.08
      2026-08-10 05:001281
      2026-08-10 11:001280.93
      2026-08-10 17:001280.85
      2026-08-10 23:001280.78
      2026-08-11 05:001280.71