Did you come up with a solution? I put down fabric last year with sand on top and it worked well but erosion has caused some problems. I’m putting down more sand as much of that beach sand I used washed away. I’m going to try concrete sand this year as it is heavier.
I have a 34 acre lake about 45’ deep.
A lake that big and deep is going to develop MUCH larger waves than the small ponds we typically discuss.
Does your water level ever drop low enough to expose your entire beach area? If so, people frequently create a large berm at the end of the beach sand area to stop the sand from having a slope to move down.
Also, your lake is so big, you might consider adding a boom (or two) at the deep end of the swimming area to take a little energy out of the waves. If it is an HOA lake, then it probably needs to also be attractive. However, if it is a private pond, then you can just chain or cable together anything you have available that floats.
An additional benefit of a boom would be a marker at the swimming areas so the small children know where the deep water starts, etc.
Waves are not just a surface water phenomenon, the entire upper water column is moving upwards as a wave crests. A shallow string of boom materials is not going to create a significant benefit. However, the bigger you go in some fashion, then perhaps you can have a cost efficient benefit.
Good luck on improving your beach!
