1997 Areas of Probable Concern

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1997 Contaminated Sediment Report to Congress—Areas of Probable Concern

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

The National Sediment Inventory data identified 96 watersheds throughout the United States as containing "Areas of Probable Concern."

These watersheds represent about 7 percent of all watersheds surveyed in the United States (96 of 1,363). This classification could result from extensive sampling throughout a watershed, or from intensive sampling at a single contaminated location or a few contaminated locations.

For more detailed information concerning individual watersheds containing "Areas of Probable Concern," please consult Volume 2: Data Summaries for Watersheds Containing Areas of Probable Concern (APCs) (EPA 823-R-97-007) of this report.