Non-point sources of pollution

Multiple, not easily identifiable sources of pollution (e.g. agriculture, urban areas). Also called diffuse sources.

Glossary of Terms

Any current in the offshore zone. Also refers to any current flowing away from shore.

The horizontal dimension of the beach measured normal to the shoreline and landward of the high water mark line on coasts.

Fringing Reef

A coral reef attached directly to an insular or continental shore. There may be a shallow channel or lagoon between the reef and the adjacent mainland.

Soil

A layer of weathered, unconsolidated material on top of bedrock; in geologic usage, usually defined as containing organic matter and being capable of supporting plant growth.

Active Beach

The portion of the littoral system that is frequently (daily or at least seasonally) subject to transport by wind, waves, and currents.

BOD

Biochemical (or Biological) Oxygen Demand - high figures suggest pollution or eutrophication.

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Non-point sources of pollution