Mississippi Lock and Dam #6 at Trempealeau, WI

(John A. Weeks III; Satellite)

USACE
Dam consists of 893 feet long concrete structure with five roller gates and 10 tainter gates. Earth embankment 2,600 feet long. Concrete overflow spillway 1,000 feet long.

"Tainter gates in Dam 6 were the first in the St. Paul District to employ independent operating machinery instead of hoist car systems." [USACE-library]

John Weeks

1 of 6 photos posted by Mike Yuhas
USACE materiel still in place after the winter repair job at Lock 6. GW Frayser approaches with 12. March 28, 2022.

Street View

Mike Yuhas posted
Raymond Grant Eckstein, operated by Marquette Transportation, is northbound with 15 out of Lock 6 and into the sunset, Trempealeau, Wisconsin, June 23, 2021.

Mike Yuhas posted
Three shots of City of Louisville headed southbound into Lock 6, July 7, 2021, 4:52 pm!
Dennis DeBruler: I Googled the towboat. It is a twin-screw with Kort nozzles, not Z-drives. So how does it get a strong sideways propwash?

Troy Roberts, Apr 2021

Comparing the water levels at the extra lock gate, it appears the river is running high. But the gates are still in the water. Or does this dam have a small lift? I could not find the normal lift height for these locks.

wigrr

The gates out of the water is another reminder that 2019 was a wet year in much of the USA.

Cindy Barta, Oct 2019

Fort Loudoun Lock posted
Here's an example of a helper boat assisting a larger commercial tow with 12-15 barges headed downbound entering Lock & Dam #6 (Trempealeau, WI) on the Upper Miss...In some circumstances the locks on the UMR experience outdraft conditions due to strong river currents that can carry barges away from the lock wall, which necessitates the helper boat service from the "Miss P" to help keep the tow properly aligned during the approach to the lock. Safety First 🥇! 
[This was added to "To scrape or not to scrape" as another example of a towboat shoving a tow up against the lock wall to fight the outdraft.]