COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-10-26 09:50 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-10-26 00:001288.03    2026-10-26 23:001288.43
2026-10-25 00:001287.76    2026-10-27 05:001288.48
2026-10-24 00:001287.52    2026-10-27 11:001288.52
2026-10-23 00:001287.37    2026-10-27 17:001288.56
2026-10-22 00:001287.27    2026-10-27 23:001288.61
2026-10-21 00:001287.2    2026-10-28 05:001288.65
2026-10-20 00:001287.04    2026-10-28 11:001288.69
2026-10-19 00:001286.9    2026-10-28 17:001288.72
2026-10-18 00:001286.82    2026-10-28 23:001288.76
2026-10-17 00:001286.48    2026-10-29 05:001288.79
2026-10-16 00:001285.99    2026-10-29 11:001288.82
      2026-10-29 17:001288.85
      2026-10-29 23:001288.87
      2026-10-30 05:001288.84
      2026-10-30 11:001288.74
      2026-10-30 17:001288.62
      2026-10-30 23:001288.48
      2026-10-31 05:001288.33
      2026-10-31 11:001288.16
      2026-10-31 17:001287.97
      2026-11-01 00:001287.77
      2026-11-01 05:001287.55
      2026-11-01 11:001287.32
      2026-11-01 17:001287.09
      2026-11-01 23:001286.86
      2026-11-02 05:001286.63
      2026-11-02 11:001286.4
      2026-11-02 17:001286.17
      2026-11-02 23:001285.95
      2026-11-03 05:001285.72
      2026-11-03 11:001285.49
      2026-11-03 17:001285.26
      2026-11-03 23:001285.03
      2026-11-04 05:001284.8
      2026-11-04 11:001284.56
      2026-11-04 17:001284.33
      2026-11-04 23:001284.09
      2026-11-05 05:001283.86