active drainage area active

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• Acid mine drainage — Yellow boy in a stream receiving acid drainage from surface coal mining. Acid mine drainage (AMD), or acid rock drainage (ARD), refers to the outflow of acidic water from (usually abandoned) metal mines or coal mines. However, other areas where… …   Wikipedia

• San Francisco Bay Area — Bay Area redirects here. For other uses, see Bay Area (disambiguation). Not to be confused with San Francisco Bay Area Combined Statistical Area. San Francisco Bay Area Common name: San Fran …   Wikipedia

• Goose Lake Prairie State Natural Area — Infobox protected area | name = Goose Lake Prairie State Natural Area, Illinois, USA iucn category = Ib caption = Map of the U.S. state of Illinois showing the location of Goose Lake Prairie State Natural Area locator x = 205 locator y = 85… …   Wikipedia

• Mer Bleue Conservation Area — IUCN Category IV (Habitat/Species Management Area) Pond with part of boardwalk in background …   Wikipedia

• Geology of the Death Valley area — The exposed geology of the Death Valley area presents a diverse and complex story that includes at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related… …   Wikipedia

• Indigenous and Community Conserved Area — Indigenous and Community Conserved Areas (ICCA) are areas in which there are close associations between indigenous people or a local community and a specific territory or body of natural resources. When such an association is combined with… …   Wikipedia

• National Capital Area Council — Owner …   Wikipedia

• Atlanta metropolitan area — Metro Atlanta redirects here. For the transit agency, see Metropolitan Atlanta Rapid Transit Authority. Metro Atlanta Atlanta Sandy Springs Marietta, Georgia MSA   CSA   …   Wikipedia

• Geology of the Capitol Reef area — [ Waterpocket Fold is the major geographic feature in the area of the park. This view is from above Capitol Reef Scenic Drive looking back at the west face of the broken and eroded fold.] The exposed geology of the Capitol Reef area presents a… …   Wikipedia

• Geology of the Grand Canyon area — The geology of the Grand Canyon area exposes one of the most complete sequences of rock anywhere, representing a period of nearly 2 billion years of the Earth s history in that part of North America. The major sedimentary rock layers exposed in… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium