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Drainage for Flooded Land

When it comes to flooding, virtually everyone is at risk. Floods are the number one natural disaster in the US. Flood maps are informative tools which can help home owners to guard themselves against the devastating effects of flooding. According to information posted on the official site, in an effort to help, the County of San Diego Mapping program has Flood Plain Mapped 148.7 miles of rivers and streams.

Flood Causes and Risks

The most known causes of land flooding include:

  • Flash floods. Caused by intense rainfall during one ore more thunderstorms, they can tear out trees and destroy bridges or buildings.
  • Heavy rains. Storms over the Pacific Ocean bring heavy rains to the San Diego area throughout the entire year. Excess water and water damages done by a quick heavy rain that runs through your slope, may result in soil erosion or more serious destruction.
  • Levees. Despite constant efforts made by several organizations in the San Diego County to keep levees operating efficiently, levees decay over time, and their maintenance raises challenges that imply the risk of flooding.
  • Mudflows
  • Broken pipes
 

Consult the flood maps of San Diego County to learn more about the risk your house, property or business is exposed to, and about flood insurance options. Depending on location, an area can be categorized as:

  • High-risk area. Labeled on the flood maps with the letter A or V, high-risk areas present a 1 in 4 chance of flooding during a 30 year mortgage. For this, home and business owners living in these areas are required to buy flood insurance.
  • Moderate-to-low risk area. These areas are labeled on flood maps with the letters B, C or X. Flood risk for these is reduced but still existing. Flood insurance is not required, but is recommended.
  • Undetermined-risk area. These areas are labeled with the letter D on a flood map.
 

When Do You Need Drainage?

If your retaining wall contains a concrete slab and it needs to be higher than 3 feet, the enormous load that it needs to contain asks for well thought-out drainage. Among the most common causes of retaining wall failure, poor drainage leads to saturated soil, frost heaving and concrete cracks. To assure adequate drainage, San Diego professionals study the land specificities and then build the retaining walls using landscape fabric, backfill, and perforated pipes. Contact us for more information.

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