Water Quality Certification
[See "401 Certification" above]
Water Supply Critical Area
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.
Water Supply Waters
Waters protected as water supplies, classified as WS-I through WS-V, with each a different level of water supply protection.
The area of land draining into a river, river system, or other body of water.
Weep Holes
Holes used for drainage. Typically used in the walls of box culverts or retaining walls to drain groundwater from behind the walls. Also, may sometimes be used to refer to deck drains on bridges.
Wetland Delineation
A survey conducted by a qualified person to determine the extent of wetland and the types of wetland that would be impacted by a project. To be a jurisdictional wetland, a wetland must exhibit hydrophytic vegetation, hydric soils, and wetland hydrology. Wetland delineations are conducted in accordance with the U.S. Army Corps of Engineers Wetland Delineation Manual.
The term "wetlands" means those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. (33 CFR 328.3(b);).
Widen Existing
Increasing the width of the current roadway. Adding additional lanes in each direction of travel to increase the capacity of safety of an existing roadway.
Wild and Scenic Rivers Act of 1968
See Glossary of Environmental Laws
Wilderness Act of 1964
See Glossary of Environmental Laws
Wildlife Resources Commission (N.C. WRC)
See Acronym Cross Reference
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