USACE Performs Project Condition Surveys for Alaskan Harbors

The U.S. Army Corps of Engineers’ Buffalo District Survey Team conducted project condition surveys (PCS) for the Alaska District in Southeast Alaska from June 5, 2017 through June 16, 2017, covering the Aurora and Harris harbors in Juneau, and the North Harbor in Petersburg. 

The Buffalo District Survey Team has provided similar survey services assistance to several other Districts over the last 4 years, including Jacksonville, Galveston, St. Louis, Norfolk, Huntington and Louisville.

The Alaska District had a temporary need of experienced surveyors who could conduct “project condition surveys”.

A PCS is a periodic assessment of Federal navigation channels and projects, which is used for channel clearance assessment. These condition surveys are primarily used to determine if project conditions (e.g. shoaling) have changed enough to warrant maintenance dredging. Shoaling is the sand, silt, soil and other materials that builds up on the bottom of a body of water over time.

“The PCS is very important because it allows our stakeholders to determine the current condition and clearance of the navigation channels,” said Roman Figler, Chief of the Buffalo District Survey Team.

“Knowing how much available clearance there is and the draft a boat has can prevent it from running aground or being damaged.”

Each year, 2.3 billion tons of cargo (foreign and domestic) moves through U.S. ports and waterways, at a value of $2 trillion. Fifty-nine high-use harbor projects account for 90 percent of the cargo moving on the harbors and channels, carrying more than 10 million tons per year.

The survey team uses a multi-beam sonar system, which provides a full-bottom, three-dimensional mapping of the harbor. To capture the project conditions, 256 sonar beams are directed downward to the harbor floor and once the data is collected and analyzed, it is converted to a map using computer-aided drafting software.

The team is still in the process of analyzing the data, Figler said.

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3rd International Congress Hydraulic Engineering Structures and Dredging

Russia’s leading maritime industry Media Group PortNews (www.portnews.ru) holds a traditional annual Congress “Hydraulic Engineering Structures and Dredging” in Moscow. 

The two-day Congress includes the 7th International Forum of Dredging Companies and the 3rd Technical Conference “Modern Solutions for Hydraulic Engineering”.

Infrastructure development is among the real sources of Russia’s economy growth. Construction of port facilities and new hydraulic engineering structures on the country’s inland waterways constitute an essential part of all infrastructure projects. It is important to take into account the best international practices to implement these projects effectively.

The program of the Congress will be devoted to the latest technologies for dredging and hydraulic engineering works. Speakers and delegates will refer to real projects to discuss specifics features of dredging works, as well as dedicated fleet and equipment involved.

To learn more about event, please, contact the organizing committee: snitko@portnews.ru

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