COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-06-16 14:43 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-06-16 00:001281.16    2026-06-16 17:001281.52
2026-06-15 00:001281.43    2026-06-16 23:001281.58
2026-06-14 00:001281.55    2026-06-17 05:001281.66
2026-06-13 00:001281.58    2026-06-17 11:001281.73
2026-06-12 00:001281.06    2026-06-17 17:001281.81
2026-06-11 00:001280.08    2026-06-17 23:001281.88
2026-06-10 00:001278.74    2026-06-18 05:001281.95
2026-06-09 00:001277.83    2026-06-18 11:001282.01
2026-06-08 00:001277.18    2026-06-18 17:001282.07
2026-06-07 00:001276.41    2026-06-18 23:001282.12
2026-06-06 00:001275.95    2026-06-19 05:001282.17
      2026-06-19 11:001282.21
      2026-06-19 17:001282.26
      2026-06-19 23:001282.31
      2026-06-20 05:001282.35
      2026-06-20 11:001282.41
      2026-06-20 17:001282.47
      2026-06-20 23:001282.54
      2026-06-21 05:001282.61
      2026-06-21 11:001282.68
      2026-06-21 17:001282.76
      2026-06-21 23:001282.84
      2026-06-22 05:001282.92
      2026-06-22 11:001282.99
      2026-06-22 17:001283.07
      2026-06-22 23:001283.15
      2026-06-23 05:001283.22
      2026-06-23 11:001283.3
      2026-06-23 17:001283.38
      2026-06-23 23:001283.46
      2026-06-24 05:001283.53
      2026-06-24 11:001283.61
      2026-06-24 17:001283.69
      2026-06-24 23:001283.76
      2026-06-25 05:001283.84
      2026-06-25 11:001283.92
      2026-06-25 17:001284
      2026-06-25 23:001284.07
      2026-06-26 05:001284.15