COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-03-27 08:40 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-03-27 00:001251.61    2026-03-27 23:001251.65
2026-03-26 00:001251.53    2026-03-28 05:001251.66
2026-03-25 00:001251.74    2026-03-28 11:001251.68
2026-03-24 00:001251.73    2026-03-28 17:001251.69
2026-03-23 00:001251.93    2026-03-28 23:001251.71
2026-03-22 00:001251.82    2026-03-29 05:001251.72
2026-03-21 00:001251.96    2026-03-29 11:001251.74
2026-03-20 00:001252.4    2026-03-29 17:001251.75
2026-03-19 00:001252.69    2026-03-29 23:001251.77
2026-03-18 00:001252.73    2026-03-30 05:001251.78
2026-03-17 00:001252.78    2026-03-30 11:001251.8
      2026-03-30 17:001251.81
      2026-03-30 23:001251.83
      2026-03-31 05:001251.84
      2026-03-31 11:001251.86
      2026-03-31 17:001251.87
      2026-03-31 23:001251.89
      2026-04-01 05:001251.9
      2026-04-01 11:001251.92
      2026-04-01 17:001251.93
      2026-04-01 23:001251.95
      2026-04-02 05:001251.97
      2026-04-02 11:001251.98
      2026-04-02 17:001252
      2026-04-02 23:001252.01
      2026-04-03 05:001252.03
      2026-04-03 11:001252.04
      2026-04-03 17:001252.06
      2026-04-03 23:001252.07
      2026-04-04 05:001252.09
      2026-04-04 11:001252.1
      2026-04-04 17:001252.12
      2026-04-04 23:001252.13
      2026-04-05 05:001252.15
      2026-04-05 11:001252.16
      2026-04-05 17:001252.18
      2026-04-05 23:001252.19
      2026-04-06 05:001252.21