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Layer: Habitat Alterations (305(b)) (ID: 4)

Name: Habitat Alterations (305(b))

Display Field: RAD305B_ALL_Water_Name

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Degraded habitats are areas in which the conditions needed for fish and other aquatic life to feed, reproduce, find shelter, and survive have been reduced or lost. About 3,000 waters distributed throughout the US are currently identified in this impairment category. Because impairments to habitat by flow changes or specific pollutants (such as sediment) are reported separately, this habitat degradation category mainly refers to structural changes, such as loss of pools or deep channels where fish can congregate, removal of plants, logs and rocks that provide cover, or changes that make areas for spawning unsuitable. Stream straightening, channelization, lining streambeds with concrete, and replacing natural shorelines with artificial walls are other common forms of manmade habitat degradation. These types of changes can have high impacts on aquatic life but do not directly pose risks to human health. However, degraded habitats often make fishing and other forms of water-based recreation undesirable, and can impact the appearance and value of waterfront property. Waterfront property owners or users can reduce habitat degradation and maintain their recreational uses and appearance (while avoiding unnecessary maintenance costs) by not removing streamside vegetation or channelizing streams, not filling wetlands or other waters, keeping natural shorelines intact, and leaving some rocks, logs or native aquatic plants as cover for fish.

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