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Rain garden

Posts tagged with "rain garden". 2 posts on this topic from our Los Angeles civil engineering practice.

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Altadena Drainage Plan: 11-Foot Slope, ADU, and Rain Garden Design

May 13, 2026

altadena fire-rebuild

Altadena Drainage Plan: 11-Foot Slope, ADU, and Rain Garden Design

A drainage plan and hydrology report for an Altadena fire rebuild where the site slopes 11 feet from street to rear. We designed flowlines around the main house and proposed ADU, added plastic lined rain gardens on both sides, and used the hydrology report to show pre-fire impervious was greater than proposed.

Altadena Drainage Plans with Lined Rain Garden

Oct 2, 2025

altadena fire-rebuild

Altadena Drainage Plans with Lined Rain Garden

We have another longer lot Altadena Fire Rebuild Drainage Plan. This lot, the front yard doesn't slope as heavily as the previous ones we have seen, which allows more room to slightly regrade the contours.