Wilson Lake, Florence, Alabama.
When Wilson Lake was impounded there was a lot of old structures, canal, bridges and other structure let on the lake floor. With the advent of the new sonar technology such as Side Imaging and Down Imaging you can still find a lot of them.
I have both Humminbird Onix and Helix Mega Scan units on my boat. These amazing pieces of technology enable me to see what’s still laying on the ;lake floor to this day almost a 100 years later!
A Little History on the Lake
Wilson Dam spans the Tennessee River between Florence (north) and Muscle Shoals (south), Alabama. It stands at an elevation of 508 feet and crosses the Tennessee on a 20-foot roadway along the top of the dam. Impoundment of the Tennessee River above Wilson Dam has created Wilson Lake, with a maximum width of 1.6 miles and a main shoreline of 154 miles.
Wilson Dam was erected by the Army Corps of Engineers in 1918-25 and turned over to the Tennessee Valley Authority when that agency was established in 1933. Wilson is a concrete gravity-dam on a blue limestone rock foundation. The total length of the structure is 4,535 feet, the height 137 feet, and the maximum width at the base (Including the apron) is 160 feet. The head the water depth on the upper side of the dam is 97.6 feet. There were originally 58 spillway gates in the face of the dam, each capable of discharging 10,000 cubic feet of water per second.
As I scan the lake bottom with my Side Image and Down Image units I’m always looking for objects that are on the lake bottom. If I do manage to find something, if I can I’ll research and see if I can find out what it is and if possible try to find a photo of what the object is or was. In the two photos below I found an old submerged arched bridge crossing a small stream or creek bed. You can clearly see the creek bed in the Side Image photo.
Click on the photo thumbnails to get a larger view.
I found an old submerged mill a couple of years ago that an old time fisherman told me if I had ever looked for it. In the two photos below you can see what the mill looked like before it was torn down and all that was left was the stone work of the mill.
The following photo is an old marina boat cover slips that instead of being torn down was easier to just pull it out into the lake and sink it. The tin metal top and sides are still on the old boat cover slips. I have tried to find a photo of the original one but have not been able to do so.