Skip to content

← Back to the galleryWatch project film

Project story · 02 / Commercial HOA · Channel drain · Downspouts

Commercial HOA Drainage:
Channel Drain and Redirecting Downspout Water

Commercial HOA drainage: channel drain & redirected downspout water

This project addressed flooding in homes during heavy rain. We installed two separate six-inch drainage lines, each handling runoff from approximately 10,000 square feet of roof area: one carries water collected by a channel drain, and the other carries downspout water redirected away from the homes.

Commercial HOA drainage: channel drain & redirected downspout water0:49 · with sound

What this film shows

  1. 5-inch channel drain to a 6-inch mainline

    A 5-inch channel drain was installed in the pavers and connected to an underground 6-inch PVC mainline, with the slope and capacity controlled to carry the water away. This line handles runoff from approximately 10,000 square feet of roof area.

  2. Downspout Runoff Redirected

    The old downspouts let water flow back toward the homes and into them. That downspout water is now redirected farther down the property through a separate 6-inch line serving approximately 10,000 square feet of roof area.

  3. 16-inch stamped-steel catch basins

    16-inch stamped-steel catch basins collect the remaining surface water. The catch basins carry a rating of approximately 500 GPM.

  4. Stone Apron

    Stone aprons at the ends of both mainlines dissipate the energy of fast-flowing water to help prevent erosion at the outlets.

Read what happens in the film

The film opens with overhead views of a work area beside buildings, paving and lawn near the water. Green drainage-pipe sections and other materials are staged nearby. Ground-level views show crew members and pipe parts.

A worker cuts a green pipe with a powered tool. Purple-colored preparation is applied around a pipe end and fitting, then the pieces are joined by hand. The film cuts to a long metal channel-drain grate running across pavers.

At a square collection basin, the grate and a removable perforated basket are lifted, revealing the interior and a round side opening. The grate is shown back in place.

Later views show green pipe in a trench beside a building wall. A white vertical pipe meets green pipe through visible fittings. Close views return to the channel grate and crew working around the opened paving. Overhead shots show the wider work area, followed by the buildings, lawn and nearby water. The film ends on black.

The film shows selected stages of the work. It does not show the complete underground pipe route or a measured drainage result.

A useful next step

For an HOA or property manager, shared paving, walkways and several roof lines often mean a board, a manager and residents all have a stake in one drainage decision.

A practical start is either a Free Water MRI Online Assessment, using photos from management or residents that show where water collects, or a prepaid $89 Field Assessment that walks the specific area in person. Site conditions determine any proposed route and installation.

Roof runoff & channel drains ↗ Commercial properties ↗

Free online: 30–60 minutes; share four-corner and affected-area photos first. $89 in person: 1½–2 hours on site.