The word watershed is sometimes used interchangeably with drainage basin or catchment.
Surface water catch basin.
Larger watersheds contain many smaller watersheds.
Diversified drainage can create a drainage system that directs storm water and surface water runoff into catch basins also known as a storm drain or curb inlet and discharge it into the municipal storm water system or natural wetlands through.
Island county owns and maintains over 3700 culverts and over 1700 catch basins nearly all associated with county roads.
Ridges and hills that separate two watersheds are called the drainage divide.
A catch basin is a large drain usually placed in low areas of a yard to catch surface runoff water.
Additionally the county manages drainage easements across hundreds of properties.
Surface water faqreport flooding make a drainage complaint ask for help pipes culverts catch basins drainage easements surface water infrastructure info and references more resources for learning about surface water in island county.
Catch basins are commonly designed with a sump area below the outlet pipe level a reservoir for water and debris that helps prevent the pipe from clogging.
It usually consists of surface drain that leads to an enlarged box beneath that is then tied to an underground drainage system that finally leads to downspout drains or storm sewers.
The watershed consists of surface water lakes streams reservoirs and wetlands and all the underlying groundwater.