- Ideas & How-Tos
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Standing water in your yard isn't just an inconvenient nuisance; it can kill your grass and other plants, ruining your landscape. Standing water can also be a health hazard, harboring mosquitoes and other pests. If you have a problem with poor drainage in your yard, you can correct it easily enough with a little work and some simple tools.
Use this checklist when you go to the store and purchase your items.
Locate the basin at the lowest point in the area to be drained.
Locate the outlet in an area that will be able to handle the added water. The outlet should be at least 1 1/8" lower than the basin for every 10' of distance between the basin and the outlet. That's roughly a 1' drop for every 100' of length or a 1 percent slope. If using a corrugated pipe, it is recommended that the outlet be 2 ¼" lower than the basin for every 10".
Starting at the spot designated for the outlet, dig a 12" to 18" deep by 8" wide trench to the spot designated for the basin. The trench should have a consistent slope from beginning to end. Be careful to keep the trench bottom flat so you don't have high spots in the corrugated pipe that may hamper the flow of water.
Dig a hole for and install the basin and basin grate. The basin grate should be flush with or slightly below the surrounding grade.
Connect the corrugated pipe to the basin outlet and place the pipe in the trench.
Test the drain by running water into the basin with a hose. If the system doesn't drain, adjust the trench.
Note: Many pipe connections in landscape drainage, including those to catch basins, are not designed to be watertight. When testing the system, it will leak. Once you backfill the trench and area around the basin, the soil will seal the connections.
Secure hardware cloth to the outlet end of the pipe to keep small creatures from nesting in and clogging your drainage system.
Backfill the trench.