from Belize City….
time to dig up the streets of Belize City.
Dig them up, without effecting any traffic and put in drains. . .. Or just leave dug up roads, to let the water out.
I've heard several people, usually well informed, in the last couple days expressing that our new concrete drains are too deep, and are full of stagnant water under the concrete paving.
better, as in the old days, when there were more, shallower drains, which also acted as soak aways.
There would not be Stagnant water, if they had the gradient correct, so that it runs out into the sea.
I have put a drain right along the front of our property.
BUT, unlike what I think you are describing for Belize City. . ...I have intentionally used concrete blocks, Without them being joined together with cement.
So that any water above them, in the ground can get into the drain.. .. ( Blocks lying sideways with their 6" x 6" square box hole as the drain. ) . .. .Any water in the Drain, that has not flowed out of the far end, can then soak into the ground below the drain.. . .. .Concrete is only above them, to provide physical protection.
But yes, I have noticed a number of plastic tube culverts also have some stagnant water in them after rain.. . . .They need to be perforated.