Inasmuch as I can google the term or ask what it means here locally, yes I am! I know what a culvert is and it sounds like that but only because of the word “ditch”. Sometimes the obvious escapes me maybe. And I am not native to here. Earth I meanAre you being serious?
Decades ago wetlands in SoWal were drained (destroyed) in order to create a method to more efficiently and quickly pollute the Bay while building more roads and lots that could flood only when it rains.
The cover story is that there were too many mosquitoes and in order to make the area between the beach and the Bay livable was to dig a series of connecting ditches draining in to the Bay. Then all the mosquitoes would live and breed dutifully only in the ditches.Then you can easily dump poison in to the ditches, which of course drain the poison and other runoff pollution directly in to the Bay.
I always was told they were "canals" not ditches. Most of the ones originally dug do run to the bay. But they do need to stop developments from using them for storm drainage. From what I can tell they have been making new developments build retention ponds that can be managed by SWMC using several different methods including fish that eat the larvae. Alot of drainage problems in some of the places around here that use them (mosquito canals) for that run into problems because they depend on the tides in the bay to be able to drain water away properly (or in a homeowners point of view..."in a timely manner so my house doesnt flood"). And you can bet that alot of the "poisons" you find in them are from yard runoff not put there by SWMC. I can remember one flood event several years ago that completely blocked 98 near/including 393 to Publix that lasted for several hours,stranding alot of people. I chose to stop at Los Rancheros,have a margarita, and check the tide times. Sure enough about 20 minutes after low tide you could see the water rushing north to the bay.