Ss

Thousand Sq Mi

Thousand Sq Mi

FIG. 7.2.4 Types and sources of pollution in estuaries of the United States. Figure based on sq mi of estuaries monitored in 1990, which represent 16.7% of total U.S. estuaries. An estuary is a tidal body of water, formed where a river meets the sea. Estuaries, such as bays, have a measurable quantity of salt. (Reprinted from U.S. EPA 1992.)

Agriculture Municipal Habitat modification Resource extraction Storm sewers/runoff Industrial Silviculture Construction Land disposal Combined sewers Unknown

Thousand Sq Mi

FIG. 7.2.4 Types and sources of pollution in estuaries of the United States. Figure based on sq mi of estuaries monitored in 1990, which represent 16.7% of total U.S. estuaries. An estuary is a tidal body of water, formed where a river meets the sea. Estuaries, such as bays, have a measurable quantity of salt. (Reprinted from U.S. EPA 1992.)

Siltation

Nutrients

Metals

Pesticides

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