Washington

Knappa, Knappa Slough

Weekly Monthly
Minus Tides
  • Current Height

  • Daily Tides

  • Low tide Jul 19 @ 12:40 AM
    1.06 ft
  • High tide Jul 19 @ 6:00 AM
    7.09 ft
  • Low tide Jul 19 @ 12:49 PM
    0.04 ft
  • High tide Jul 19 @ 6:48 PM
    7.91 ft

  • Astronomical Events

  • Sunrise
  • Sunset
  • Moonrise
    12:05 PM
  • Moonset
    11:36 PM
  • Moon Phase
    First Quarter (33%)

  • 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 July 19 the tide peaks at 7.09 ft at 6:00 AM and falls to 1.06 ft at 12:40 AM. Predictions are derived from NOAA data; times are shown in local station time.
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