COLUMBIA--GRAND COULEE DAM (GCDW1)

Observed    Forecast/Trend Issued: 2026-09-26 10:20 PDT
Date/Time (PDT)Inflow    Date/Time (PDT)Inflow
2026-09-27 00:0074600    2026-09-27 05:0075228.65
2026-09-26 00:0062200    2026-09-27 11:0076064.87
2026-09-25 00:0075400    2026-09-27 17:0076242.7
2026-09-24 00:0077100    2026-09-27 23:0076140.8
2026-09-23 00:0070000    2026-09-28 05:0076067.75
2026-09-22 00:0070500    2026-09-28 11:0076005.09
2026-09-21 00:0066100    2026-09-28 17:0075887.11
2026-09-20 00:0060300    2026-09-28 23:0075666.52
2026-09-19 00:0070500    2026-09-29 05:0075064.44
2026-09-18 00:0063800    2026-09-29 11:0073457.05
2026-09-17 00:0062800    2026-09-29 17:0071051.91
      2026-09-29 23:0069102.98
      2026-09-30 05:0067952.31
      2026-09-30 11:0066688.16
      2026-09-30 17:0065008.9
      2026-09-30 23:0063632.02
      2026-10-01 05:0062966.42
      2026-10-01 11:0062816.71
      2026-10-01 17:0062927
      2026-10-01 23:0063069.3
      2026-10-02 05:0063104.05
      2026-10-02 11:0063026.3
      2026-10-02 17:0062853.58
      2026-10-02 23:0062590.58
      2026-10-03 05:0062203.07
      2026-10-03 11:0061603.18
      2026-10-03 17:0060841.17
      2026-10-03 23:0060165.43
      2026-10-04 05:0059724.92
      2026-10-04 11:0059466.65
      2026-10-04 17:0059306.94
      2026-10-04 23:0059200.5
      2026-10-05 05:0059128.36
      2026-10-05 11:0059120.33
      2026-10-05 17:0059219.4
      2026-10-05 23:0059341.08
      2026-10-06 05:0059444.77