COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-01 15:32 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-02 00:001274.57    2026-06-02 11:001275.31
2026-06-01 00:001273.64    2026-06-02 17:001275.49
2026-05-31 00:001271.93    2026-06-02 23:001275.66
2026-05-30 00:001270.22    2026-06-03 05:001275.83
2026-05-29 00:001269.38    2026-06-03 11:001276
2026-05-28 00:001268.89    2026-06-03 17:001276.17
2026-05-27 00:001268.13    2026-06-03 23:001276.33
2026-05-26 00:001267.39    2026-06-04 05:001276.49
2026-05-25 00:001266.66    2026-06-04 11:001276.65
2026-05-24 00:001265.46    2026-06-04 17:001276.81
2026-05-23 00:001264.92    2026-06-04 23:001276.97
      2026-06-05 05:001277.13
      2026-06-05 11:001277.29
      2026-06-05 17:001277.44
      2026-06-05 23:001277.6
      2026-06-06 05:001277.77
      2026-06-06 11:001277.95
      2026-06-06 17:001278.16
      2026-06-06 23:001278.41
      2026-06-07 05:001278.66
      2026-06-07 11:001278.91
      2026-06-07 17:001279.13
      2026-06-07 23:001279.32
      2026-06-08 05:001279.51
      2026-06-08 11:001279.7
      2026-06-08 17:001279.89
      2026-06-08 23:001280.08
      2026-06-09 05:001280.26
      2026-06-09 11:001280.43
      2026-06-09 17:001280.6
      2026-06-09 23:001280.77
      2026-06-10 05:001280.93
      2026-06-10 11:001281.08
      2026-06-10 17:001281.23
      2026-06-10 23:001281.36
      2026-06-11 05:001281.49