COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-10-28 08:27 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-10-29 00:001288.69    2026-10-29 11:001289.01
2026-10-28 00:001288.64    2026-10-29 17:001289.06
2026-10-27 00:001288.29    2026-10-29 23:001289.1
2026-10-26 00:001288.03    2026-10-30 05:001289.08
2026-10-25 00:001287.76    2026-10-30 11:001288.99
2026-10-24 00:001287.52    2026-10-30 17:001288.88
2026-10-23 00:001287.37    2026-10-30 23:001288.75
2026-10-22 00:001287.27    2026-10-31 05:001288.6
2026-10-21 00:001287.2    2026-10-31 11:001288.44
2026-10-20 00:001287.04    2026-10-31 17:001288.25
2026-10-19 00:001286.9    2026-11-01 00:001288.05
      2026-11-01 05:001287.83
      2026-11-01 11:001287.61
      2026-11-01 17:001287.38
      2026-11-01 23:001287.15
      2026-11-02 05:001286.92
      2026-11-02 11:001286.7
      2026-11-02 17:001286.47
      2026-11-02 23:001286.25
      2026-11-03 05:001286.02
      2026-11-03 11:001285.8
      2026-11-03 17:001285.57
      2026-11-03 23:001285.34
      2026-11-04 05:001285.12
      2026-11-04 11:001284.89
      2026-11-04 17:001284.66
      2026-11-04 23:001284.42
      2026-11-05 05:001284.2
      2026-11-05 11:001283.97
      2026-11-05 17:001283.75
      2026-11-05 23:001283.54
      2026-11-06 05:001283.33
      2026-11-06 11:001283.13
      2026-11-06 17:001282.93
      2026-11-06 23:001282.74
      2026-11-07 05:001282.55