COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-04-26 15:09 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-04-26 00:001253.57    2026-04-26 23:001253.52
2026-04-25 00:001253.44    2026-04-27 05:001253.44
2026-04-24 00:001253.3    2026-04-27 11:001253.35
2026-04-23 00:001253.13    2026-04-27 17:001253.26
2026-04-22 00:001252.85    2026-04-27 23:001253.17
2026-04-21 00:001252.96    2026-04-28 05:001253.09
2026-04-20 00:001253.68    2026-04-28 11:001253
2026-04-19 00:001253.49    2026-04-28 17:001253
2026-04-18 00:001253.58    2026-04-28 23:001253
2026-04-17 00:001253.46    2026-04-29 05:001253
2026-04-16 00:001253.26    2026-04-29 11:001253
      2026-04-29 17:001253
      2026-04-29 23:001253
      2026-04-30 05:001253
      2026-04-30 11:001253
      2026-04-30 17:001253
      2026-04-30 23:001253
      2026-05-01 05:001253
      2026-05-01 11:001253
      2026-05-01 17:001253
      2026-05-01 23:001253
      2026-05-02 05:001253
      2026-05-02 11:001253
      2026-05-02 17:001253
      2026-05-02 23:001253
      2026-05-03 05:001253
      2026-05-03 11:001253
      2026-05-03 17:001253
      2026-05-03 23:001253
      2026-05-04 05:001253
      2026-05-04 11:001253
      2026-05-04 17:001253
      2026-05-04 23:001253
      2026-05-05 05:001253
      2026-05-05 11:001253
      2026-05-05 17:001253
      2026-05-05 23:001253
      2026-05-06 05:001253