This has been a dry year after we have had a few wet years. In fact, 2019 was very wet. A lot of dredging is needed this year. Not only is the channel a lot shallower due to the relative lack of rain, the wet years pushed sand back into the channel.
The current is so strong (8- to 10-mph) that they don't need any pipes to relocate the dredge material.
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Screenshot
Donald Mayer: Is this at Victoria Bend?
[A comment said yes. Unfortunately, I have no idea where Victoria Bend is.
Another comment indicated this is the Hurley] |
"The dredge Hurley is a 353-feet-long, 108-feet-wide dustpan dredge. Its two 1,500 horsepower motors drive pumps that can remove as much as 5,000 cubic yards of sand and sediment from the river bottom each hour using a vacuum-cleaner type head and deposit it safely outside the navigation channel via a long floating pipeline. It can dredge as deep as 75 feet if conditions require." [
USACE-historic-lows]
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U.S. Army Corps of Engineers, Headquarters posted
Memphis District Corps of Engineers recently shared this photo of the first experimental hydraulic dredge, "Dredge Alpha" to be constructed for the immediate relief from low water conditions. Background: In November 1891, representatives of steamboat transportation lines operating below St. Louis appeared before the Mississippi River Commission to plead for immediate relief from low-water. After a thorough investigation, the commission decided that dredging was the only means to provide relief quickly. It authorized construction of an experimental hydraulic dredge, later named the Alpha. This dredge proved its worth in its first test at Cape Girardeau, Missouri. In eight days it cleared an 1,800-foot bar and, where there had been only 3 to 4 feet of water, provided a 6-foot channel. Most encouraging, the channel remained clear the entire season. Pickwick Lock shared |
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MWRD via Dennis DeBruler
A view to the east showing a bucket dredge in operation on the South Branch of the Chicago River near Taylor Street in Chicago, Illinois, on March 22, 1917. |
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Mark Pleas commented on the above post
Gosho (五祥), the world's largest grab dredger, owned by Kojimagumi.
https://www.kk-kojimagumi.co.jp/english/ship/ship_dredging/ship_grab-dredger/entry-254.html
"Grab bucket capacity：200 m3 Dredging depth：-48 m"
The 200m3 bucket has a 370 ton grab, and a 106m3 bucket with a 477 ton grab can be used to remove hard soil.
[I thought this was the largest clamshell bucket I had ever seen.]
The bucket has a counterweight so power is needed only to lift the soil's weight. And it has two spuds so that it can maneuver itself. It also has an automatic flat bed dredging system. All three of these features are patented. [The towers midship and aft control the spuds.] |
Jan Danielsen
posted 25 photos with the comment:
If anyone is interested in what is going on in Pool 13 near Thomson, Illinois mile marker 531.0 ---here are pictures I took while I was on the river today. 8-3-21. (If not interested just scroll on past). The Corp of Engineers is dredging ---a pipe "sucks" it up and then the sand is "blasted" out onto shore. (Probably not the right words to use). 
I think it's about a mile long that the work is being done--or so. I found it interesting. Dale Rud: 5000ft of plastic pipe and 1800 ft of steel pipe on pontoons. We started pumping around noon today [Aug 3, 2021].
Jan Danielsen: Dale Rud Thank you for giving us the correct info. My husband was figuring a mile or so. Interesting. I took the pictures when we were about to go in to the boat dock in Thomson, Illinois.
Joseph Lorge: I work on the lower could someone tell me the name of the two core towboats.
A few days later, M/V Warioto was working a different job.
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Steve J Crile posted
Corp of Engineers boat M/V Warioto heading up-river at Muscatine |
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Brian Krause commented on Steve's post
This pic is from the wheelhouse today.
[I wonder what kind of job that equipment helps perform.] |
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Mark Sherman posted
Another job down . On to the next one . Dredge boat life. |
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USACE, cropped
Dredge Goetz working in Pool 18 on the Mississippi River
"Dredging project to cause temporary river closure near Keithsburg, Illinois"
The closure is anticipated to be for three weeks with two half-hour windows a day for recreational boaters.
[It seems to me the USACE should develop a truss so that they can suspend the pipe more than 9' below the surface under the navigation channel to avoid closing the river.] |
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Angel Binner posted
This week cover photo is credited to Adrian Loewenhagen! Thank you for this amazing picture of the USACE's Dredge Goetz tow!
Dennis DeBruler: Without seeing the base of the tower, I could not determine if this bridge tower was at Burlington, IA, or Quincy, IL. But the attachment of the cables to the deck show that this is the bridge at Burlington.
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David Gulden
posted three photos with the comment: "DREDGE CAPTAIN WILLIAM CLARK."
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David Gulden posted
DREDGE WILLIAM S MITCHELL |
In addition to keeping navigation channels open, dredging is used for certain types of mining. Here one is used for mining sand from the bottom of Lake Erie.
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Bill Kloss posted
Meet the sandsucker Charles Dick with her "birdcage" apparatus. Built at Collingwood ON by Collingwood Shipbuilding Co., Hull 71 Launched May 27, 1922258’6” LOA, 250’ LBP, 43’ beam, 20’ depth 1 deck, coal-fired boilers, triple expansion engine, 1250 IHPEnrolled at Toronto ON 244.0 x 43.2 x 18.9, 2015 GT, 651 NT Can 141678 to: National Sand & Materials Co., Toronto ON (home port Toronto ON) Entered service 1922. Boilers converted to oil firing late 1940s. Laid up at end of 1973 season and did not operate again. (The Canadian government was concerned about the degree of erosion of the Lake Erie shoreline from removing sand from the lake bottom and in 1976 discontinued the vessel’s license to take sand from the lake). Sold for scrap 1976 to Marine Salvage Ltd., Port Colborne ON and scrapped at Port Colborne. Michael Chase: Used to see the Sandsuckers in the 60's off Point Pelee on a regular basis ...
Carl Burkett: Fond memories of the CHARLES DICK. Thanks Bill Kloss
https://carlzboats.blogspot.com/2012/05/the-sandsucker-charles-dick.html |
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| Bill Kloss commented on his post |
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Bill Kloss commented on his post
Photo from Carl Burkett Carlz Boats |
Bill Kloss
posted two photos with the comment: "The sandsucker
Charles Dick entering the Cuyahoga River in these undated Chuck Drumm photos."
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Becky Haag posted via Dennis DeBruler
Unfortunately, no one was in Two Harbors when I was there, but I thought this was an interesting shot. Does anyone know what they're doing on the gravity chute side? Taconite recovery? Dredging?
[According to comments: the left side is Dock #2 and both sides are used, but primarily the conveyor side on the left. Dock #1 on the right is not used.]
William Boyd: The sheeting along the shoot [chute] side started to fail and a sinkhole developed inside. They could be dredging up the washed out material.
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WallaWallaUSACE
posted three photos with the comment:
Dredging on the Snake River
The Walla Walla District began dredging on January 5. This work is being done to maintain the federal navigation channel at the confluence of the Snake and Clearwater rivers near Lewiston, Idaho and downstream of Ice Harbor Dam. Work will conclude by March 1, before the spring fish runs.
The last time these two areas were dredged was from December 2014 to March 2015. The 220,000 cubic yards of sediment is being disposed in-water at a site near Bishop Bar.
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Legendary Machinery posted
[Some comments state that it would be used for dredging while others say it is used for unloading big ships.] |
Lucibello Heavy Equipment photography
posted two photos with the comment: "
Weeks Marine, Inc.’s newest trailing suction hopper dredge the RB Weeks which is a twin to the Magdalen. At 364’-6” this dredge is capable of holding 8550 yards of material."
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Port of Monroe posted
The King Company of Holland, MI has spent the last few weeks conducting dredging operations on the River Raisin. This ensures our channel is navigable for current and future vessel operations, like the loading of synthetic gypsum. The articulated tug/barge Undaunted/Pere Marquette 41 were in port twice in the last week to load syngyp.
Photo Credit: Samuel Hankinson
[Port of Monroe] |
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Mark Bush commented on the above post
Good crews. They keep channels open at Grand Haven, Muskegon, and elsewhere. |
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Mark Bush commented on the above post
Here’s Undaunted/PM 41 at Ferrysburg on the Grand River. |
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Dana VanOordt commented on the above post
I was watching them pack up from my camp site. |
I don't know if these are dredging rivers or coastline ports, but they are worth noting.
Actually, it appears this one is working on the Panama Canal.
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Screenshot @ 0:02
The World’s largest Grabber Dredger with 200 cubic meter bucket. Credit to Teo Chee Hean |
Aug 2023:
USACE, Rock Island District posted four photos with the comment: "This week, Rock Island District dredging crews were working below the lock at
Locks and Dam 15 in Rock Island, Illinois, removing sediment from the navigation channel. Dredging is an integral part of yearly channel maintenance to ensure the navigation industry can continue moving up and down the river. District crews can remove up to five barges of sediment a day and this year plans to dredge 750,000 cubic yards of material.
" Melissa Cook: Where do they put 750,000 cubic yards of sediment?
U.S. Army Corps of Engineers, Rock Island District: Melissa Cook the sediment is placed in areas based on our Dredged Material Management Program (DMMP) which evaluates and identifies preferred dredged material placement sites. You can read more about the program here:
7:01 video Starting at
2:33 it replaces a loaded barge with an empty one.
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