COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-08-31 10:29 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-09-01 00:001277.43    2026-09-01 11:001277.06
2026-08-31 00:001277.5    2026-09-01 17:001277.18
2026-08-30 00:001277.4    2026-09-01 23:001277.31
2026-08-29 00:001277.27    2026-09-02 05:001277.43
2026-08-28 00:001277.34    2026-09-02 11:001277.56
2026-08-27 00:001277.72    2026-09-02 17:001277.68
2026-08-26 00:001278.3    2026-09-02 23:001277.81
2026-08-25 00:001278.7    2026-09-03 05:001277.93
2026-08-24 00:001278.99    2026-09-03 11:001278.04
2026-08-23 00:001278.98    2026-09-03 17:001278.15
2026-08-22 00:001279.08    2026-09-03 23:001278.26
      2026-09-04 05:001278.37
      2026-09-04 11:001278.48
      2026-09-04 17:001278.6
      2026-09-04 23:001278.71
      2026-09-05 05:001278.83
      2026-09-05 11:001278.95
      2026-09-05 17:001279.06
      2026-09-05 23:001279.16
      2026-09-06 05:001279.26
      2026-09-06 11:001279.36
      2026-09-06 17:001279.46
      2026-09-06 23:001279.56
      2026-09-07 05:001279.66
      2026-09-07 11:001279.76
      2026-09-07 17:001279.85
      2026-09-07 23:001279.95
      2026-09-08 05:001280.04
      2026-09-08 11:001280.13
      2026-09-08 17:001280.22
      2026-09-08 23:001280.31
      2026-09-09 05:001280.4
      2026-09-09 11:001280.49
      2026-09-09 17:001280.59
      2026-09-09 23:001280.68
      2026-09-10 05:001280.78