Impoundment Region 5 Cleanup Site: Environmental Glossary Glossary and Key Word List Definition: A body of water or sludge confined by a dam, dike, floodgate, or other barrier. Impoundment Pesticides Glossary Glossary and Key Word List Definition: A body of water or sludge confined by a dam, dike, floodgate, or other barrier. impoundment Federal Land Management in the Chesapeake Bay Watershed Glossary Glossary and Key Word List Definition: A body of water or sludge confined by a dam, dike, floodgate, or other barrier. Impoundment RCRA Glossary of Terms Glossary and Key Word List Definition: A body of water or sludge confined by a dam, dike, floodgate, or other barrier. Impoundment Terms of Environment Glossary and Key Word List Definition: A body of water or sludge confined by a dam, dike, floodgate, or other barrier. Impoundment Aquatic Biodiversity Glossary Glossary and Key Word List Definition: A body of water, such as a pond, confined by a dam, dike, floodgate or other barrier. Impoundment EPA EV-Built Environments-Waste Systems Taxonomy Definition 1: Facility or part of a facility which is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although it may be lined with man-made materials), which is designed to hold an accumulation of liquid wastes or wastes containing free liquids, and which is not an injection well. Examples of surface impoundments are holding, storage, settling, and aeration pits, ponds, and lagoons. [40 CFR 260.10 (CFR 2013)] Definition 2: Body of water, such as a pond, confined by a dam, dike, floodgate or other barrier. [Aquatic Biodiversity Glossary]