COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-07 09:43 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-08 00:001277.18    2026-06-08 11:001276.98
2026-06-07 00:001276.41    2026-06-08 17:001276.97
2026-06-06 00:001275.95    2026-06-08 23:001276.94
2026-06-05 00:001275.47    2026-06-09 05:001276.92
2026-06-04 00:001275.22    2026-06-09 11:001276.88
2026-06-03 00:001274.97    2026-06-09 17:001276.85
2026-06-02 00:001274.57    2026-06-09 23:001276.81
2026-06-01 00:001273.64    2026-06-10 05:001276.77
2026-05-31 00:001271.93    2026-06-10 11:001276.73
2026-05-30 00:001270.22    2026-06-10 17:001276.69
2026-05-29 00:001269.38    2026-06-10 23:001276.65
      2026-06-11 05:001276.62
      2026-06-11 11:001276.58
      2026-06-11 17:001276.54
      2026-06-11 23:001276.5
      2026-06-12 05:001276.45
      2026-06-12 11:001276.41
      2026-06-12 17:001276.35
      2026-06-12 23:001276.29
      2026-06-13 05:001276.23
      2026-06-13 11:001276.16
      2026-06-13 17:001276.15
      2026-06-13 23:001276.21
      2026-06-14 05:001276.27
      2026-06-14 11:001276.33
      2026-06-14 17:001276.39
      2026-06-14 23:001276.46
      2026-06-15 05:001276.53
      2026-06-15 11:001276.61
      2026-06-15 17:001276.74
      2026-06-15 23:001276.89
      2026-06-16 05:001277.05
      2026-06-16 11:001277.22
      2026-06-16 17:001277.39
      2026-06-16 23:001277.56
      2026-06-17 05:001277.72