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Glossary of Terms

Anoxic events - can occur in areas of sea water, fresh water, or groundwater that is depleted of dissolved oxygen. A sudden influx of nutrients (phosphate/nitrate), often a byproduct of agricultural run-off or sewage discharge, can result in large but short-lived algae blooms that use up the available dissolved oxygen in water, killing estuarine and marine life.

Aquatic ecosystem – is an ecosystem in a body of water.

Ecology – is the scientific study of interactions among organisms, and the environment in which they live.

– is a complex community of organisms and its environment functioning as an ecological unit.

Environmental flow
- are the quantity and timing of surface water flows required to maintain healthy aquatic ecosystems.

Groundwater – is water that naturally occurs beneath the surface of the ground. It is normally extracted by pumping and frequently referred to as well water.

– is the branch of geology that deals with the occurrence, distribution, and effect of ground water.

Hydrology – is the scientific study of the properties, distribution, and effects of water on the earth's surface, in the soil, in underlying rocks, and in the atmosphere.

– are a set of rules or orders issued by an executive authority and used to enforce an enabling statute.

Rules – are a formal or informal set of guidelines that state what a person must and must not do.

Stormwater discharge
– is rainfall or snowmelt that does not soak into the ground and discharges into surface waters.

Surface water
– is water that is open to the atmosphere, and occurs naturally in streams, ponds, lakes, rivers and estuaries.

– is something of, relating to, or being a method for using a resource that neither depletes nor permanently damages it.  

Water course
– is any channel that a flowing body of water follows. This can include streams, rivers and estuaries.

– is an area of land that drains surface water and groundwater into a river or stream. Watersheds are nature's boundaries.

Watershed management
–  allows residents, landowners, and others having an interest in the future of a watershed to make the best decisions on managing land-based activities that impact associated water resources.  

Well field
– is an area containing one or more wells that produce usable amounts of water.

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