COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-08-07 09:45 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-08-08 00:001283.34    2026-08-08 11:001283.09
2026-08-07 00:001283.62    2026-08-08 17:001283.02
2026-08-06 00:001283.81    2026-08-08 23:001282.95
2026-08-05 00:001284.03    2026-08-09 05:001282.88
2026-08-04 00:001284.21    2026-08-09 11:001282.81
2026-08-03 00:001284.36    2026-08-09 17:001282.75
2026-08-02 00:001284.44    2026-08-09 23:001282.69
2026-08-01 00:001285.01    2026-08-10 05:001282.62
2026-07-31 00:001285.45    2026-08-10 11:001282.56
2026-07-30 00:001285.69    2026-08-10 17:001282.49
2026-07-29 00:001285.89    2026-08-10 23:001282.42
      2026-08-11 05:001282.35
      2026-08-11 11:001282.28
      2026-08-11 17:001282.21
      2026-08-11 23:001282.13
      2026-08-12 05:001282.06
      2026-08-12 11:001281.98
      2026-08-12 17:001281.91
      2026-08-12 23:001281.84
      2026-08-13 05:001281.76
      2026-08-13 11:001281.69
      2026-08-13 17:001281.61
      2026-08-13 23:001281.54
      2026-08-14 05:001281.46
      2026-08-14 11:001281.39
      2026-08-14 17:001281.31
      2026-08-14 23:001281.23
      2026-08-15 05:001281.15
      2026-08-15 11:001281.07
      2026-08-15 17:001280.99
      2026-08-15 23:001280.91
      2026-08-16 05:001280.83
      2026-08-16 11:001280.75
      2026-08-16 17:001280.67
      2026-08-16 23:001280.59
      2026-08-17 05:001280.52