COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-17 08:49 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-17 00:001281.32    2026-06-17 17:001282.16
2026-06-16 00:001281.16    2026-06-17 23:001282.28
2026-06-15 00:001281.43    2026-06-18 05:001282.39
2026-06-14 00:001281.55    2026-06-18 11:001282.51
2026-06-13 00:001281.58    2026-06-18 17:001282.62
2026-06-12 00:001281.06    2026-06-18 23:001282.73
2026-06-11 00:001280.08    2026-06-19 05:001282.83
2026-06-10 00:001278.74    2026-06-19 11:001282.93
2026-06-09 00:001277.83    2026-06-19 17:001283.03
2026-06-08 00:001277.18    2026-06-19 23:001283.13
2026-06-07 00:001276.41    2026-06-20 05:001283.23
      2026-06-20 11:001283.34
      2026-06-20 17:001283.45
      2026-06-20 23:001283.58
      2026-06-21 05:001283.7
      2026-06-21 11:001283.82
      2026-06-21 17:001283.87
      2026-06-21 23:001283.92
      2026-06-22 05:001283.97
      2026-06-22 11:001284.03
      2026-06-22 17:001284.08
      2026-06-22 23:001284.13
      2026-06-23 05:001284.18
      2026-06-23 11:001284.23
      2026-06-23 17:001284.28
      2026-06-23 23:001284.33
      2026-06-24 05:001284.38
      2026-06-24 11:001284.43
      2026-06-24 17:001284.48
      2026-06-24 23:001284.53
      2026-06-25 05:001284.58
      2026-06-25 11:001284.63
      2026-06-25 17:001284.68
      2026-06-25 23:001284.73
      2026-06-26 05:001284.79
      2026-06-26 11:001284.84
      2026-06-26 17:001284.89
      2026-06-26 23:001284.94
      2026-06-27 05:001284.99