COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-07-11 09:05 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-07-11 00:001289.21    2026-07-11 17:001289.3
2026-07-10 00:001289.11    2026-07-11 23:001289.35
2026-07-09 00:001288.84    2026-07-12 05:001289.4
2026-07-08 00:001288.3    2026-07-12 11:001289.41
2026-07-07 00:001287.59    2026-07-12 17:001289.39
2026-07-06 00:001286.88    2026-07-12 23:001289.36
2026-07-05 00:001286.51    2026-07-13 05:001289.33
2026-07-04 00:001286.25    2026-07-13 11:001289.31
2026-07-03 00:001285.87    2026-07-13 17:001289.29
2026-07-02 00:001285.6    2026-07-13 23:001289.28
2026-07-01 00:001285.76    2026-07-14 05:001289.27
      2026-07-14 11:001289.25
      2026-07-14 17:001289.23
      2026-07-14 23:001289.21
      2026-07-15 05:001289.17
      2026-07-15 11:001289.14
      2026-07-15 17:001289.09
      2026-07-15 23:001289.05
      2026-07-16 05:001289
      2026-07-16 11:001288.95
      2026-07-16 17:001288.9
      2026-07-16 23:001288.85
      2026-07-17 05:001288.79
      2026-07-17 11:001288.74
      2026-07-17 17:001288.68
      2026-07-17 23:001288.63
      2026-07-18 05:001288.57
      2026-07-18 11:001288.52
      2026-07-18 17:001288.46
      2026-07-18 23:001288.4
      2026-07-19 05:001288.34
      2026-07-19 11:001288.27
      2026-07-19 17:001288.21
      2026-07-19 23:001288.14
      2026-07-20 05:001288.07
      2026-07-20 11:001288
      2026-07-20 17:001287.92
      2026-07-20 23:001287.85
      2026-07-21 05:001287.77