Washington

Knappa, Knappa Slough

Weekly Monthly
Minus Tides
  • Current Height

  • Daily Tides

  • High tide Dec 27 @ 4:34 AM
    8.31 ft
  • Low tide Dec 27 @ 10:36 AM
    2.41 ft
  • High tide Dec 27 @ 3:49 PM
    9.14 ft
  • Low tide Dec 27 @ 11:15 PM
    -0.55 ft

  • Astronomical Events

  • Sunrise
  • Sunset
  • Moonrise
    9:19 PM
  • Moonset
    10:41 AM
  • Moon Phase
    Waning Gibbous (82%)

  • 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 December 27 the tide peaks at 8.31 ft at 4:34 AM and falls to 2.41 ft at 10:36 AM. Predictions are derived from NOAA data; times are shown in local station time.
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