Jetties at the Mouth of the Columbia River
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- Опубликовано: 12 сен 2024
- An aerial video shot from a helicopter of the Mouth of the Columbia Rivers jetty system. The U.S. Army Corps of Engineers, Portland District, builds and maintains this system, which provides safe passage for vessels entering the Pacific Ocean or returning.
Construction took place from 1885 - 1939, and is one of the largest jetty systems along the U.S. West Coast. The system consists of three rubble-mound jetties totaling NINE point SEVEN MILES! Been built on massive tidal shoals and designed to minimize navigation channel maintenance and provide safe transit between the Pacific Ocean and the Columbia River.
That is a LONG jetty!
I hear that both Jettys equal 9 miles!
Do they need to dredge that big of a river?
I thought the Humboldt Bay jetty was big...this is it's own zip code.
Yes they have to dredge the bar every year. This is one of the most dangerous bars in the world.
5:16
so this area is being sacrificed as the relocated area for the wave energy to disperse ??
How far between jetties ? Are their massive sand bars going out an coming in ? Nice video, thanks
I’ve done some early solo spring paddling off the end of the North jetty and the sandbars extend out quite far. It was incredibly anxious kayaking with waves coming from two directions combined with current running around the intensified pinch point at the jetties distal end. Even after giving the North jetty termination point a wide berth I was amazed to see the sandy sea bed in the deeper troughs. I can understand why the crabbers capsize when they cut in too close. I rolled a few times too but kayaks are a little easier to right. I believe it’s about 2 miles between outer jetties. I’m not sure what depth the sandbars are at in the shipping lanes but there is obviously dredging going on (and I think I know where it put after😝).
Hi @zanelile8192! At the widest point (west) it’s about three miles wide!! Impressive, huh? You can read more about these jetties here: www.nwp.usace.army.mil/Locations/Oregon-Coast/Mouth-of-the-Columbia/
Important jetty
We agree!!
1:50 ??? Tell me how they managed to get that huge structure out there and why google maps shows them as huge cut megalithic stones.
I don't think the army corps of engineers could do it today.
They did not film the South jetty. Only the ones on the Washington side.