COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-11-04 08:00 PST
Date/Time (PST)Pool Height    Date/Time (PST)Pool Height
2026-11-04 00:001289.12    2026-11-04 10:001289.02
2026-11-03 00:001288.93    2026-11-04 16:001288.88
2026-11-02 00:001288.55    2026-11-04 22:001288.75
2026-11-01 00:001288.4    2026-11-05 04:001288.61
2026-10-30 23:001288.55    2026-11-05 10:001288.47
2026-10-29 23:001288.65    2026-11-05 16:001288.33
2026-10-28 23:001288.69    2026-11-05 22:001288.19
2026-10-27 23:001288.64    2026-11-06 04:001288.04
2026-10-26 23:001288.29    2026-11-06 10:001287.9
2026-10-25 23:001288.03    2026-11-06 16:001287.75
2026-10-24 23:001287.76    2026-11-06 22:001287.6
      2026-11-07 04:001287.45
      2026-11-07 10:001287.3
      2026-11-07 16:001287.16
      2026-11-07 22:001287.01
      2026-11-08 04:001286.86
      2026-11-08 10:001286.72
      2026-11-08 16:001286.58
      2026-11-08 22:001286.44
      2026-11-09 04:001286.31
      2026-11-09 10:001286.17
      2026-11-09 16:001286.04
      2026-11-09 22:001285.91
      2026-11-10 04:001285.79
      2026-11-10 10:001285.66
      2026-11-10 16:001285.54
      2026-11-10 22:001285.42
      2026-11-11 04:001285.31
      2026-11-11 10:001285.19
      2026-11-11 16:001285.08
      2026-11-11 22:001284.96
      2026-11-12 04:001284.85
      2026-11-12 10:001284.73
      2026-11-12 16:001284.61
      2026-11-12 22:001284.5
      2026-11-13 04:001284.39
      2026-11-13 10:001284.27
      2026-11-13 16:001284.16
      2026-11-13 22:001284.05
      2026-11-14 04:001283.94