COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-23 08:58 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-23 00:001285.1    2026-06-23 17:001285.17
2026-06-22 00:001284.66    2026-06-23 23:001285.13
2026-06-21 00:001283.69    2026-06-24 05:001285.1
2026-06-20 00:001282.98    2026-06-24 11:001285.07
2026-06-19 00:001282.95    2026-06-24 17:001285.06
2026-06-18 00:001282.21    2026-06-24 23:001285.05
2026-06-17 00:001281.32    2026-06-25 05:001285.04
2026-06-16 00:001281.16    2026-06-25 11:001285.04
2026-06-15 00:001281.43    2026-06-25 17:001285.04
2026-06-14 00:001281.55    2026-06-25 23:001285.05
2026-06-13 00:001281.58    2026-06-26 05:001285.05
      2026-06-26 11:001285.04
      2026-06-26 17:001285.04
      2026-06-26 23:001285.02
      2026-06-27 05:001285.01
      2026-06-27 11:001284.99
      2026-06-27 17:001284.98
      2026-06-27 23:001284.98
      2026-06-28 05:001284.97
      2026-06-28 11:001284.96
      2026-06-28 17:001285.03
      2026-06-28 23:001285.1
      2026-06-29 05:001285.17
      2026-06-29 11:001285.24
      2026-06-29 17:001285.31
      2026-06-29 23:001285.38
      2026-06-30 05:001285.45
      2026-06-30 11:001285.51
      2026-06-30 17:001285.58
      2026-06-30 23:001285.65
      2026-07-01 05:001285.72
      2026-07-01 11:001285.79
      2026-07-01 17:001285.86
      2026-07-01 23:001285.93
      2026-07-02 05:001286
      2026-07-02 11:001286.07
      2026-07-02 17:001286.13
      2026-07-02 23:001286.2
      2026-07-03 05:001286.27