COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-04-27 16:07 PDT
Date/Time (PDT)Inflow    Date/Time (PDT)Inflow
2026-04-27 00:00137600    2026-04-27 23:00135900.83
2026-04-26 00:00134200    2026-04-28 05:00135091.72
2026-04-25 00:00140700    2026-04-28 11:00133731.12
2026-04-24 00:00133100    2026-04-28 17:00131957.58
2026-04-23 00:00128700    2026-04-28 23:00131242.87
2026-04-22 00:00124200    2026-04-29 05:00130889.88
2026-04-21 00:00124900    2026-04-29 11:00130541.24
2026-04-20 00:00125100    2026-04-29 17:00130224.98
2026-04-19 00:00121000    2026-04-29 23:00129956.41
2026-04-18 00:00122900    2026-04-30 05:00129697.24
2026-04-17 00:00117900    2026-04-30 11:00129449.86
      2026-04-30 17:00129292.83
      2026-04-30 23:00129287.52
      2026-05-01 05:00129355.96
      2026-05-01 11:00129487.93
      2026-05-01 17:00129740.91
      2026-05-01 23:00130107.56
      2026-05-02 05:00130499.01
      2026-05-02 11:00130878.62
      2026-05-02 17:00131291.58
      2026-05-02 23:00131740.02
      2026-05-03 05:00132170.27
      2026-05-03 11:00132573.62
      2026-05-03 17:00132986.5
      2026-05-03 23:00133390.09
      2026-05-04 05:00133736.43
      2026-05-04 11:00134049
      2026-05-04 17:00134395.72
      2026-05-04 23:00134777.98
      2026-05-05 05:00135161.42
      2026-05-05 11:00135592.36
      2026-05-05 17:00136170.84
      2026-05-05 23:00136912.26
      2026-05-06 05:00137763.85
      2026-05-06 11:00138708.13
      2026-05-06 17:00139728.85
      2026-05-06 23:00140751.63
      2026-05-07 05:00141693.95