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County
Perennial Streams
Fairfax County, Virginia —
Perennial streams in Fairfax County. Perennial streams are bodies of water flowing in a natural or man-made channel year-round, except during periods of drought. -
State
Oregon Channel Migration
State of Oregon —
Channel migration is the natural process by which streams move laterally over time. It is typically a gradual phenomenon that works over many years to effect... -
County
Resource Protection Areas
Fairfax County, Virginia —
The Chesapeake Bay Preservation Ordinance was adopted to protect our local streams and one of the world's most productive estuaries, the Chesapeake Bay, from...