Murrieta, CA
Retaining Wall & Slope Drainage in Murrieta
Looking for retaining wall & slope drainage in Murrieta? Temecula Valley Drainage Pros serves Murrieta (about 5 miles north of downtown Temecula) and the surrounding Temecula area. Drainage systems for hillside lots and retaining walls — wall weep systems, back-of-wall gravel drains, and slope interceptor drains that relieve hydrostatic pressure and control runoff. Retaining wall and slope drainage in Murrieta, for walls that weep and hillsides that send water at the house.
Retaining Wall & Slope Drainage for Murrieta homeowners & businesses
Murrieta's hillside parcels trigger Development Standards at 25 percent slope and cap retaining walls at six feet, terraced six feet apart. Granitic bedrock of the northern and eastern hills weathers to decomposed granite over silty-sand colluvium at the slope base; saturated, that material loads a wall with hydrostatic pressure and slides, so drainage behind the wall, not its face, holds.
If the wall is dry but the ground behind the house stays wet, see French drain installation in Murrieta.
- Relieves hydrostatic pressure behind retaining walls
- Interceptor drains control hillside and slope runoff
- Protects walls, pads, and downslope structures
Runoff coming down a hillside toward the house, or a retaining wall that weeps, bulges, or stains? Talk it through for your Murrieta property.
About Murrieta
Murrieta is home to roughly 110,949 residents (2020), in Riverside County, established in 1991. Murrieta is a largely residential city directly north of Temecula, incorporated in 1991 after explosive suburban growth through the 1990s and 2000s. It averages roughly 15 inches of rain a year, concentrated between November and April, with occasional heavy downpours and thunderstorms.
Local landmarks include Murrieta Hot Springs, Los Alamos Hills, Santa Rosa Plateau Ecological Reserve.
Retaining Wall & Slope Drainage in nearby areas
Retaining Wall & Slope Drainage questions from Murrieta customers
- What actually fails behind a retaining wall on a Murrieta hillside?
- Usually the water, not the wall's face. The granitic hills to the north and east weather to decomposed granite over silty-sand colluvium, and when that material saturates it both loses strength and pushes hydrostatic pressure against the wall. A wall built without drainage behind it — gravel backfill, a perforated collector and weep outlets — carries loads it was never meant to and moves. The slope drainage is the structural part.
- How tall can a retaining wall be under Murrieta's hillside rules?
- The city's hillside development standards kick in at 25 percent slope and generally hold a retaining wall to six feet, with terraced walls limited to six feet each and separated by at least six feet horizontally. That is one reason slope projects here often use stepped walls instead of one tall one — and each tier needs its own drainage so water isn't simply handed down to the wall below it.
- My graded slope is bare after excavation — what keeps it from washing out this winter?
- Murrieta's hillside standards require graded slopes over three feet tall to be protected by planting, and jute mesh when planting happens between August 15 and April 15 — the window that brackets the rainy season. Bare decomposed-granite slopes erode fast once storms arrive, so the planting-and-mesh requirement and the subsurface slope drainage do two different jobs: one holds the surface, the other relieves pressure underneath.
- Is slope drainage on the plateau the same as on the tract hillsides lower down?
- Not quite. The Santa Rosa Plateau sits at roughly 1,800 to 2,700 feet in rolling hills with spring-fed creeks and large RA-5 parcels, so slope water there often has natural drainage paths and no storm drain to reach. The graded tract hillsides below are engineered cut-and-fill with defined easements. Where the water is supposed to end up differs, and that changes how a wall's drainage is designed.
Runoff coming down a hillside toward the house, or a retaining wall that weeps, bulges, or stains
Describe your Murrieta property and we will connect you with a local contractor.