Watershed Questions

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Is my property located within a watershed?

Yes, if your property is under the land use regulations of Chatham County. When the watershed ordinance was adopted by the Commissioners, a watershed designation was assigned to all property under the County's land use control. If your property is under the land use regulations of Siler City, Pittsboro, or Cary, you will need to contact that jurisdiction to determine the watershed classification.

What is impervious surface?

The amount of area on a parcel of land that is incapable of being penetrated by water. This includes but is not limited to structures, gravel and paved areas, tennis courts, etc.

What is the "critical area"?

Critical area is the land adjacent to a water supply intake where risk associated with pollution is greater than from remaining portions of the watershed. Critical area is defined as land within one-half mile upstream and draining to a river intake or within one-half mile and draining to the normal pool elevation of water supply reservoirs.

What is the "protected area"?

Protected areas are only located within WS-IV watersheds. A protected area is defined as land within five miles and draining to the normal pool elevation of water supplies, or within ten miles upstream and draining to a river intake.