Tuesday, August 10, 2021

1937 Mississippi Lock and Dam #9 near Lynxfille, WI

(John A. Weeks III; HAERSatellite)

USACE
Constructed and placed in operation in July 1937. The site underwent major rehabilitation from 1989 to 2006. The dam consists of concrete structure 811 feet long with five roller gates and eight tainter gates. Earth embankment 9,800 feet long with a grouted overflow spillway 1,350 feet long.

I'm saving the satellite image because it caught the locking of a 15-barge tow.
Satellite

Jan Danielsen posted
Lock and Dam 9 Lynxville, Wisconsin.

Photo by Tamara Thomsen via WisconsinShipwrecks

Street View
Note the USACE assist towboat is at its dock.

John Weeks
The Lynxville area is noted as being a great birdwatching area. It is a major flyway for ducks, hundreds of thousands of which pass through this area twice a year. Bald Eagles are in this area all year long, since it is the southern part of the Eagles summer range, and the northern part of the Eagles winter range. Other species seen in large numbers include Tundra Swans, American White Pelicans, Turkey Vultures, and hawks. Locals suggest a boat ramp just north of Lynxville as being a great birdwatching location.

Every photo I found so far has the gates up. The previous few years have been wet. But here is a photo with the gates down.
USACE-content
The lift is 9'

USGS
[I could not find a color key for this, but I suspect it is the percentage of the year that the land is covered with water.]
 
Jan Danielsen posted
Jayhawk at lock and dam 9 Lynxville, Wisconsin. Taken as we were driving past (I wasn't the one driving). 😀 9-14-23.

0:19 video @ 0:03

HAER-grid, part 1

HAER-grid, part 2



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