Washington

Knappa, Knappa Slough

Weekly Monthly
Minus Tides
  • Current Height

  • Daily Tides

  • High tide Oct 25 @ 1:48 AM
    7.39 ft
  • Low tide Oct 25 @ 8:02 AM
    1.22 ft
  • High tide Oct 25 @ 1:34 PM
    8.87 ft
  • Low tide Oct 25 @ 8:51 PM
    -0.73 ft

  • Astronomical Events

  • Sunrise
  • Sunset
  • Moonrise
    5:30 PM
  • Moonset
    7:20 AM
  • Moon Phase
    Full Moon (100%)

  • Station Info

  • Position:
    L 46°11.2' N     λ 123°35.3' W
  • Station ID:
    9439069
  • Station Type:
    Subordinate
  • Offsets:
  • Datum:
    MLLW (Mean Lower-Low Water)
  • Time Zone:
    -8
  • About: Knappa, Knappa Slough is a subordinate tide station in Columbia River, Washington (46°11.2' N, 123°35.3' W). On October 25 the tide peaks at 7.39 ft at 1:48 AM and falls to 1.22 ft at 8:02 AM. Predictions are derived from NOAA data; times are shown in local station time.
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