They normally lower the Lake level (which takes quite a while) to get it to a low level prior to the rainy season. Part of what's missing from the law suit is the understanding that this is a federal waterway and the Corps is tasked with maintaining it at a navigable level for COMMERCIAL traffic in addition to maintaining safe lake levels. The lawsuit looks to make it unnavigable for tugs and barges for an extended period in the spring early summer.
To better understand recent historic lake levels, go to the below website. Scroll down to the graph, and change the start date from 2019 to 2016. If you look at the water levels line between June and October of 2017, you will realize how limited the Corps ability to control lakes levels is once the rainy season hits. This is combined with a lack of truly good information on the original quality of the dikes. In a perfect world, dredging route number 1 across the lake from Port Mayaca lock to the Rim canal entrance at Clewiston, an additional 9' would allow the Lake to be maintained at a much safer level. You would probably see a lot more dry areas where vegetation could get a foothold and dramatically improve water quality in the lake.
https://waterdata.usgs.gov/fl/nwis/...od=&begin_date=2016-01-29&end_date=2020-01-29
Ted