COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-09-13 08:53 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-09-13 00:001279.96    2026-09-13 11:001280.42
2026-09-12 00:001279.49    2026-09-13 17:001280.51
2026-09-11 00:001279.14    2026-09-13 23:001280.6
2026-09-10 00:001278.77    2026-09-14 05:001280.71
2026-09-09 00:001278.44    2026-09-14 11:001280.84
2026-09-08 00:001278.19    2026-09-14 17:001280.96
2026-09-07 00:001277.76    2026-09-14 23:001281.08
2026-09-06 00:001277.43    2026-09-15 05:001281.2
2026-09-05 00:001277.17    2026-09-15 11:001281.31
2026-09-04 00:001276.76    2026-09-15 17:001281.43
2026-09-03 00:001276.64    2026-09-15 23:001281.54
      2026-09-16 05:001281.66
      2026-09-16 11:001281.77
      2026-09-16 17:001281.88
      2026-09-16 23:001281.99
      2026-09-17 05:001282.09
      2026-09-17 11:001282.2
      2026-09-17 17:001282.31
      2026-09-17 23:001282.42
      2026-09-18 05:001282.52
      2026-09-18 11:001282.63
      2026-09-18 17:001282.74
      2026-09-18 23:001282.85
      2026-09-19 05:001282.93
      2026-09-19 11:001282.99
      2026-09-19 17:001283.05
      2026-09-19 23:001283.1
      2026-09-20 05:001283.14
      2026-09-20 11:001283.19
      2026-09-20 17:001283.24
      2026-09-20 23:001283.28
      2026-09-21 05:001283.35
      2026-09-21 11:001283.44
      2026-09-21 17:001283.53
      2026-09-21 23:001283.62
      2026-09-22 05:001283.71
      2026-09-22 11:001283.82
      2026-09-22 17:001283.93
      2026-09-22 23:001284.05
      2026-09-23 05:001284.17