dissolved oxygen DO Environmental Issues Terms &Acronyms Glossary and Key Word List Definition: Oxygen that is freely available in water to sustain the lives of fish and other aquatic organisms. Dissolved Oxygen DO Sediment Total Maximum Daily Loads (TMDLs) Glossary Glossary and Key Word List Definition: The amount of oxygen that is dissolved in water. This term also refers to a measure of the amount of oxygen available for biochemical activity in a waterbody, and is an indicator of the quality of that water. Dissolved Oxygen Urban Watershed Management Research Terminology Glossary and Key Word List Dissolved Oxygen DO CADDIS Glossary Glossary and Key Word List Dissolved oxygen DO Chesapeake Bay Glossary Glossary and Key Word List Definition: The amount of oxygen that is present in the water. It is measured in units of milligrams per liter (mg/L), or the milligrams of oxygen dissolved in a liter of water. Just like humans, all of the Bay's living creatures need oxygen to survive. dissolved oxygen DO Glossary of Technical Terms: Office of Underground Storage Tanks Glossary and Key Word List Dissolved Oxygen DO Aquatic Biodiversity Glossary Glossary and Key Word List Definition: The oxygen dissolved in water or sewage. Adequately dissolved oxygen is necessary for the life of fish and other aquatic organisms and for the prevention of offensive odors. Dissolved Oxygen DO Drinking Water Technical &Legal Terms Glossary and Key Word List Definition: Measure of water quality indicating free oxygen dissolved in water. dissolved oxygen Lake Erie Lakewide Management Plan (LaMP) Glossary Glossary and Key Word List Definition: The amount of oxygen measured in the water. Dissolved Oxygen DO Abandoned Mine Lands (AML) Glossary Glossary and Key Word List Dissolved Oxygen DO Terms of Environment Glossary and Key Word List Definition: The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odors. DO levels are considered a most important indicator of a water body's ability to support desirable aquatic life. Secondary and advanced waste treatment are generally designed to ensure adequate DO in waste-receiving waters. Dissolved Oxygen DO Abbreviation and Acronym List Dissolved Oxygen DO EPA EV-Chemical Substances-Chemical Properties Taxonomy Definition 1: Molecular oxygen (oxygen gas) dissolved in water. The concentration in water is a function of atmospheric pressure, temperature, and dissolved-solids concentration of the water. The ability of water to retain oxygen decreases with increasing temperature or dissolved-solids concentration. Photosynthesis and respiration by plants commonly cause diurnal variations in dissolved-oxygen concentration in water from some streams. [USGS Water Resources Data State, 2005 Definition of Terms] Definition 2: Concentration of oxygen dissolved in water, expressed in mg/l or as percent saturation, where saturation is the maximum amount of oxygen that can theoretically be dissolved in water at a given temperature and pressure. [NOAA Coral Reef Glossary] Definition 3: The amount of oxygen that is present in the water. It is measured in units of milligrams per liter (mg/L), or the milligrams of oxygen dissolved in a liter of water. Just like humans, all of the Bay's living creatures need oxygen to survive. [Chesapeake Bay Glossary]