COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-29 10:39 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-29 00:001285.92    2026-06-29 17:001286
2026-06-28 00:001285.37    2026-06-29 23:001286
2026-06-27 00:001285    2026-06-30 05:001286
2026-06-26 00:001285.19    2026-06-30 11:001286
2026-06-25 00:001285.39    2026-06-30 17:001286
2026-06-24 00:001285.23    2026-06-30 23:001286
2026-06-23 00:001285.1    2026-07-01 05:001286
2026-06-22 00:001284.66    2026-07-01 11:001286
2026-06-21 00:001283.69    2026-07-01 17:001286
2026-06-20 00:001282.98    2026-07-01 23:001286
2026-06-19 00:001282.95    2026-07-02 05:001286.06
      2026-07-02 11:001286.13
      2026-07-02 17:001286.19
      2026-07-02 23:001286.25
      2026-07-03 05:001286.31
      2026-07-03 11:001286.38
      2026-07-03 17:001286.44
      2026-07-03 23:001286.5
      2026-07-04 05:001286.56
      2026-07-04 11:001286.63
      2026-07-04 17:001286.69
      2026-07-04 23:001286.75
      2026-07-05 05:001286.81
      2026-07-05 11:001286.88
      2026-07-05 17:001286.94
      2026-07-05 23:001287
      2026-07-06 05:001287.09
      2026-07-06 11:001287.2
      2026-07-06 17:001287.29
      2026-07-06 23:001287.38
      2026-07-07 05:001287.46
      2026-07-07 11:001287.54
      2026-07-07 17:001287.61
      2026-07-07 23:001287.68
      2026-07-08 05:001287.74
      2026-07-08 11:001287.8
      2026-07-08 17:001287.85
      2026-07-08 23:001287.9
      2026-07-09 05:001287.95