COLUMBIA--BLO ROCK ISLAND DAM (RISW1)

Observed    Forecast/Trend Issued: 2026-05-11 10:45 PDT
Date/Time (PDT)Pool Height    Date/Time (PDT)Pool Height
2026-05-11 00:00611.89    2026-05-11 17:00611.49
2026-05-10 00:00612.57    2026-05-11 23:00611.49
2026-05-09 00:00612.13    2026-05-12 05:00611.49
2026-05-08 00:00611.77    2026-05-12 11:00611.49
2026-05-07 00:00612.11    2026-05-12 17:00611.49
2026-05-06 00:00612.51    2026-05-12 23:00611.49
2026-05-05 00:00612.3    2026-05-13 05:00611.49
2026-05-04 00:00612.2    2026-05-13 11:00611.49
2026-05-03 00:00612.25    2026-05-13 17:00611.49
2026-05-02 00:00612.27    2026-05-13 23:00611.49
2026-05-01 00:00612.18    2026-05-14 05:00611.49
      2026-05-14 11:00611.49
      2026-05-14 17:00611.49
      2026-05-14 23:00611.49
      2026-05-15 05:00611.49
      2026-05-15 11:00611.49
      2026-05-15 17:00611.49
      2026-05-15 23:00611.49
      2026-05-16 05:00611.49
      2026-05-16 11:00611.49
      2026-05-16 17:00611.49
      2026-05-16 23:00611.49
      2026-05-17 05:00611.49
      2026-05-17 11:00611.49
      2026-05-17 17:00611.49
      2026-05-17 23:00611.49
      2026-05-18 05:00611.49
      2026-05-18 11:00611.49
      2026-05-18 17:00611.49
      2026-05-18 23:00611.49
      2026-05-19 05:00611.49
      2026-05-19 11:00611.49
      2026-05-19 17:00611.49
      2026-05-19 23:00611.49
      2026-05-20 05:00611.49
      2026-05-20 11:00611.49
      2026-05-20 17:00611.49
      2026-05-20 23:00611.49
      2026-05-21 05:00611.49