Jacob H.
be considerably more than if you had two. But if you had two, then it'd cost twice as
much to build one. Then you run into costs of building those against the reduction in the
amount of dredging that you would expect. The model could give some idea how much
reduction in dredging. As far as I know, the model has been constructed and the
navigation channel is being maintained by dredging.
Are there any other coastal projects like that that you have been involved with--navigation
channels or harbors of refuge that have had similar problems?
A:
Yes, there are several small ones. Grays Harbor on the Pacific Coast is a much smaller
harbor with similar problems. A model was constructed and tests indicated that jetties and
some bank protection within the harbor were required.
Head of Passes, Mississippi River
There was a navigation problem on the Mississippi River at the Head of Passes. That's
where part of the flow leaves the Mississippi River navigation channel and goes down
another pass--I've forgotten its name. The problem concerned what type of control
structure was required to prevent excessive flows from leaving the main Mississippi River
to cause greatly increased maintenance dredging of the navigation channel. Tests made
on the large Mississippi River model at WES indicated that a flow control structure was
necessary at the Head of Passes, similar to the one constructed farther upstream.
The Atchafalaya?
A:
Atchafalaya, right. There were problems on other navigation channels, but not as large
or important, cost wise, as on the Columbia River.
Humboldt Bay Jetties
Did you get involved with the Humboldt Bay jetties?
A:
Humboldt Bay jetties?
Yes, in California.
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