COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-10-17 09:13 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-10-18 00:001286.82    2026-10-18 05:001286.93
2026-10-17 00:001286.48    2026-10-18 11:001286.94
2026-10-16 00:001285.99    2026-10-18 17:001286.95
2026-10-15 00:001285.62    2026-10-18 23:001286.95
2026-10-14 00:001285.31    2026-10-19 05:001286.98
2026-10-13 00:001285.21    2026-10-19 11:001287
2026-10-12 00:001285.3    2026-10-19 17:001287.02
2026-10-11 00:001285.52    2026-10-19 23:001287.04
2026-10-10 00:001285.69    2026-10-20 05:001287.06
2026-10-08 00:001286.14    2026-10-20 11:001287.09
      2026-10-20 17:001287.11
      2026-10-20 23:001287.13
      2026-10-21 05:001287.15
      2026-10-21 11:001287.17
      2026-10-21 17:001287.19
      2026-10-21 23:001287.22
      2026-10-22 05:001287.24
      2026-10-22 11:001287.26
      2026-10-22 17:001287.28
      2026-10-22 23:001287.3
      2026-10-23 05:001287.32
      2026-10-23 11:001287.35
      2026-10-23 17:001287.37
      2026-10-23 23:001287.39
      2026-10-24 05:001287.41
      2026-10-24 11:001287.43
      2026-10-24 17:001287.45
      2026-10-24 23:001287.48
      2026-10-25 05:001287.5
      2026-10-25 11:001287.52
      2026-10-25 17:001287.54
      2026-10-25 23:001287.56
      2026-10-26 05:001287.58
      2026-10-26 11:001287.61
      2026-10-26 17:001287.63
      2026-10-26 23:001287.65
      2026-10-27 05:001287.67