Dry Wells
Understanding Dry Wells
Dry wells, or drainage wells are stormwater control measures that collect stormwater and allow it to naturally infiltrate the surrounding groundwater. To officially be considered a dry well, the depth of the chamber must be longer than the opening is wide.
Managing Drainage Wells
Because drainage wells allow stormwater to directly enter the groundwater table, it is important to prevent chemical spills and pollutants from entering the SCM. These wells rely on gravity to allow stormwater to drain and often do not offer pretreatment. Regular maintenance includes clearing debris from the area and removing muck and sediment from the bottom.
Class V Wells
Dry wells must also be authorized by the appropriate authority. If your dry well is classified as a class V well, it is protected under the Safe Drinking Water Act (SDWA) as they may discharge to surrounding drinking waters. Class V wells require an inventory report is submitted to the local municipality or state.
Swales are designed with soil that allows water to infiltrate the ground, providing ground water recharge. Many SCMs utilize sunlight to facilitate evaporation and vegetation to facilitate denitrification
How SCMs Improve Water Quality
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