COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-11-12 08:57 PST
Date/Time (PST)Pool Height    Date/Time (PST)Pool Height
2026-11-13 00:001285.55    2026-11-13 10:001285.15
2026-11-12 00:001286.11    2026-11-13 16:001285.02
2026-11-11 00:001286.51    2026-11-13 22:001284.89
2026-11-10 00:001287.15    2026-11-14 04:001284.76
2026-11-09 00:001287.51    2026-11-14 10:001284.63
2026-11-08 00:001287.71    2026-11-14 16:001284.49
2026-11-07 00:001287.92    2026-11-14 22:001284.36
2026-11-06 00:001288.29    2026-11-15 04:001284.21
2026-11-05 00:001288.83    2026-11-15 10:001284.07
2026-11-04 00:001289.12    2026-11-15 16:001283.92
2026-11-03 00:001288.93    2026-11-15 22:001283.77
      2026-11-16 04:001283.62
      2026-11-16 10:001283.46
      2026-11-16 16:001283.31
      2026-11-16 22:001283.15
      2026-11-17 04:001283
      2026-11-17 10:001282.85
      2026-11-17 16:001282.7
      2026-11-17 22:001282.56
      2026-11-18 04:001282.42
      2026-11-18 10:001282.28
      2026-11-18 16:001282.14
      2026-11-18 22:001282
      2026-11-19 04:001281.86
      2026-11-19 10:001281.72
      2026-11-19 16:001281.58
      2026-11-19 22:001281.44
      2026-11-20 04:001281.3
      2026-11-20 10:001281.15
      2026-11-20 16:001281.01
      2026-11-20 22:001280.87
      2026-11-21 04:001280.72
      2026-11-21 10:001280.58
      2026-11-21 16:001280.43
      2026-11-21 22:001280.29
      2026-11-22 04:001280.14