COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-10-18 09:46 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-10-19 00:001286.9    2026-10-19 05:001287.09
2026-10-18 00:001286.82    2026-10-19 11:001287.11
2026-10-17 00:001286.48    2026-10-19 17:001287.13
2026-10-16 00:001285.99    2026-10-19 23:001287.15
2026-10-15 00:001285.62    2026-10-20 05:001287.17
2026-10-14 00:001285.31    2026-10-20 11:001287.19
2026-10-13 00:001285.21    2026-10-20 17:001287.21
2026-10-12 00:001285.3    2026-10-20 23:001287.22
2026-10-11 00:001285.52    2026-10-21 05:001287.24
2026-10-10 00:001285.69    2026-10-21 11:001287.26
      2026-10-21 17:001287.28
      2026-10-21 23:001287.3
      2026-10-22 05:001287.32
      2026-10-22 11:001287.34
      2026-10-22 17:001287.36
      2026-10-22 23:001287.38
      2026-10-23 05:001287.4
      2026-10-23 11:001287.42
      2026-10-23 17:001287.44
      2026-10-23 23:001287.46
      2026-10-24 05:001287.48
      2026-10-24 11:001287.5
      2026-10-24 17:001287.51
      2026-10-24 23:001287.53
      2026-10-25 05:001287.55
      2026-10-25 11:001287.57
      2026-10-25 17:001287.59
      2026-10-25 23:001287.61
      2026-10-26 05:001287.63
      2026-10-26 11:001287.65
      2026-10-26 17:001287.67
      2026-10-26 23:001287.69
      2026-10-27 05:001287.71
      2026-10-27 11:001287.73
      2026-10-27 17:001287.75
      2026-10-27 23:001287.77
      2026-10-28 05:001287.79