Drainage system in Sakura parks or in parks in general

I'm doing a university challenge and my professor requested me how the draining system will work as a result of I'm utilizing Ipês-rosas which are timber similar to Sakuras however are native from have been I dwell.

He principally mentioned that the leaves fall would hinder a standard drainage system and I would wish to element in technical drawing an answer for this. I used to be trying a bit into it and began trying the options for Japanese Sakura Parks. I've discovered that the Ueno Park has another system: the facet channels and drainage grates, assist stop particles accumulation and maintain the park clear. However whereas trying additional into it didn't discover a lot.

That's why I'm coming to ask assist for Reddit, I have to look into these options and the way they're finished in follow. Any options would assist.

However I used to be trying in one thing extra like this:

Motoara River Cherry Blossoms (Saitama)

And the way I might challenge this.

Or one thing like this:

Sakura Hiroba by Tadao Ando (Makuhari)

That the leaves move in some like synthetic pond and ends within the drainage (don't know if it's meant for this).

Something about this concern of coping with the leaves would assist. Thanks prematurely!