I have the misfortune to live at the bottom of a gradually-sloping neighborhood. There are several drainage easements ending on my street. The major 2 both combine at my yard in deep-well storm drains. One works fine. The other brings an unending supply of tree debris and general trash down.
When I chose this lot 30 years ago, I considered many things. A drainage easement wasn't one of those things I had any knowledge of. I SAW it, of course. It seemed to work fine.
I signed the construction contract and moved in on Labor Day 1986. The month after, the serious Fall rains hit and the drain got covered with loose twigs, branches and debris. I cleaned the covering grate off each time.
It got worse as years went by. After a hurricane, the entire street around my house was covered by drainwater. I got really tired of cleaning the drain top. When I called the County office back then, they told me the property owners were responsible for that. The drainage easement is exactly on the property line, so my neighbors were equally responsible. But their lawn was 2' higher than mine, so I got all the water; they didn't care. So I had to keep it clean in self defense.
One year, the drain top got cleaned mysteriously and I thanked my neighbor. They said they "knew a guy" at the County and he arranged for the cleaning as a favor but only that one time.
They moved out and another couple moved in. So the County "in" was lost. I asked the County on several occasions for help in cleaning the drain. No luck.
3 weeks ago, I asked again, using an online site. Imagine my surprise when I glanced out my front windows and saw an unfamiliar reflection of the storm grate top! The County had come by and scraped it clean and made some further digging to improve drainage!
I didn't even hear them doing it!