🧭 Colregs Demarcation Line Official Source · Verified Oct 05, 2026 COLREGS demarcation for Alsea Bay: a line drawn from the seaward shoreline on the north of the Alsea Bay entrance 165° true across the channel entrance (33 CFR 80.1335). 94% Confidence ✓ Confirm 💬 Comment
🧭 Charting Authority And Availability Official Source · Verified Oct 05, 2026 NOAA Electronic Navigational Chart (ENC) coverage available; NOAA paper chart 18561 (Approaches to Yaquina/Depoe Bay) canceled 02-Jul-2024. 92% Confidence ✓ Confirm 💬 Comment
🧭 Tide Station For Operational Timing Official Source · Verified Oct 05, 2026 NOAA tide station WALDPORT (station ID 9434939) provides official tide predictions and benchmark data for Alsea Bay/Waldport. 92% Confidence ✓ Confirm 💬 Comment
🧭 Entrance Character And Depths Official Source · Verified Oct 05, 2026 Alsea Bay entrance has a shifting sand bar; Coast Pilot reports bar depths ~4–6 ft and the channel is changeable; boats rarely cross the bar. 90% Confidence ✓ Confirm 💬 Comment
🧭 Channel Marking And Local Aids Official Source · Verified Oct 05, 2026 Coast Pilot: the Alsea River channel is marked by seasonal private buoys; aids may be seasonal and changeable. 89% Confidence ✓ Confirm 💬 Comment
🧭 Operator Entrance Cautions And Launch Guidance Operator Source · Verified Oct 05, 2026 Port of Alsea: 'No maintained channel or jetties; dangerous at mouth on ebb tides; avoid boat launch on negative tides.' 88% Confidence ✓ Confirm 💬 Comment