Drainageways shall be identified on the map submitted with the application. If it is necessary for the operation to cross or fill such a drainageway, properly engineered drainage structures shall be provided to allow free-flowing drainage and minimize erosion. Where necessary, water-retarding structures shall be placed in drainageways.
4 Va. Admin. Code § 25-31-470
Statutory Authority
§§ 45.1-161.3 and 45.1-180.3 of the Code of Virginia.