COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-07-08 09:19 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-07-08 00:001288.3    2026-07-08 17:001288.85
2026-07-07 00:001287.59    2026-07-08 23:001288.87
2026-07-06 00:001286.88    2026-07-09 05:001288.89
2026-07-05 00:001286.51    2026-07-09 11:001288.91
2026-07-04 00:001286.25    2026-07-09 17:001288.93
2026-07-03 00:001285.87    2026-07-09 23:001288.96
2026-07-02 00:001285.6    2026-07-10 05:001288.98
2026-07-01 00:001285.76    2026-07-10 11:001289
2026-06-30 00:001285.92    2026-07-10 17:001289.06
2026-06-29 00:001285.92    2026-07-10 23:001289.11
2026-06-28 00:001285.37    2026-07-11 05:001289.17
      2026-07-11 11:001289.23
      2026-07-11 17:001289.29
      2026-07-11 23:001289.34
      2026-07-12 05:001289.4
      2026-07-12 11:001289.45
      2026-07-12 17:001289.49
      2026-07-12 23:001289.52
      2026-07-13 05:001289.55
      2026-07-13 11:001289.58
      2026-07-13 17:001289.59
      2026-07-13 23:001289.59
      2026-07-14 05:001289.59
      2026-07-14 11:001289.58
      2026-07-14 17:001289.56
      2026-07-14 23:001289.54
      2026-07-15 05:001289.52
      2026-07-15 11:001289.49
      2026-07-15 17:001289.46
      2026-07-15 23:001289.42
      2026-07-16 05:001289.38
      2026-07-16 11:001289.34
      2026-07-16 17:001289.3
      2026-07-16 23:001289.25
      2026-07-17 05:001289.19
      2026-07-17 11:001289.14
      2026-07-17 17:001289.08
      2026-07-17 23:001289.01
      2026-07-18 05:001288.95