Erosion is the breakdown of soil into sediment, which can travel a few inches or many miles. Erosion can be an issue for property managers because of San Diego County’s water runoff regulations. In an effort to clean up our oceans and waterways, San Diego regulators implemented standards to control storm water runoff. The
goal was to control contaminants at their point of origin. San Diego County wants to minimize the amount of sediment leaving a property and traveling into natural habitats.
Effects of Erosion
The effects of erosion include:
- Departure of nutrient rich top soil
- Burying of plant seed, which can delay growth
- Chemically treated top soil being introduced into natural habitats
According to the United States Green Building Council, Urban runoff is the number one pollution source in Southern California.
Slopes and Erosion Control
One of the biggest causes of erosion (and headaches for property and community managers) is slopes. Most slopes in San Diego are man made. And when they aren’t designed or maintained properly, erosion occurs.
Slopes cause erosion problems during during San Diego’s storm season – November through January.
Ideally, a property’s slopes and embankments have healthy plant growth with root systems to prevent erosion. But drought conditions and plant fungus have lead to the death and removal of turf and ground covers. Because of that, slope areas have become more barren and susceptible to erosion.
It doesn’t even have to be a steep slope. This photo is an area with a minimal pitch. But because it’s the lowest point at the base of a large paved area, the result is heavy erosion.
Ways to Reduce Erosion on Slopes
Horizontal fiber rolls that are placed across different segments of a slope. Wattle reduces the speed of water flow and traps sentiment.
Jute netting and straw blanket:
Netting that is spread across an embankment. Plants can grow through the open areas. The netting helps to slow water flow and trap sentiment.
Hydroseed is a mixture of water, seed, mulch and binding agent. The seed mixes can be grasses, native shrubs, wildflowers, trees or a combination of all of the above. The process speeds the growth of the vegetation, while the binding agent helps to keep everything in place in the meantime.
One to three inch rock material is heavy enough to resist water flow. The gravel also helps reduce the speed of water flow. That’s important because more water can then be absorbed by the soil it is traveling over.
If you’re a Property, Facility, Apartment or Community Manager with eroding slope areas or water runoff, contact the experts at Heaviland Landscape Management today at firstname.lastname@example.org