Any Architects In The House?

Note that the topography is exaggerated (X3) to clearly see the water flow. A real topography map of this area is necessary for micro analysis. Let's do macro for now.

do you see how those catchment areas (flood zones) cut across Ikorodu Road?

Can you see the basins clearly?

See the trough that cuts between Maryland and Ojota, which continues to surround Opebi?

Oh, One more thing,  Solutions after the fact of all this overbuilding will be very expensive, and may include tunneling.  Can you believe that I have seen many gutters being built down valleys and back uphill without any pipes to move the water at the bottom? Like these contractors think water will also flow uphill,  lol. Keep your eyes open and you will find many like that in Lagos. I just shake my head when I see these and hope that one day, we will overcome. About the project that I was suggesting, It is very doable for me, but it will surely be a disaster for an idea thief.

I used Indigo for those, yeah it does get fuzzy, but the longer you render it for the better it gets. I have rendered some that turned out good, the ones I posted here turned out worse than they normally do.

And Yeah I designed it in Sketchup.

Vray is a better renderer but my trial has expired now.

Sorry, I'm still looking for the answer to that question myself.

This is a nice render, doesn't say too much about its context though, but I'm sure you were just trying things out.