Free National Management Measures to Control Nonpoint Source Pollution from Hydromodification
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Book Details :
Published on: 2015-06-12
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Original language: English
The Nation’s aquatic resources are among its most valuable assets. Although environmental protection programs in the United States have improved water quality during the past 35 years, many challenges remain. Significant strides have been made in reducing the impacts of discrete pollutant sources, but some aquatic ecosystems remain impaired, due in part to complex pollution problems caused by nonpoint source (NPS) pollution. Of special concern are the problems in our streams, lakes, estuaries, aquifers, and other water bodies caused by runoff that is inadequately controlled or treated. These problems include changes in flow, increased sedimentation, higher water temperature, lower dissolved oxygen, degradation of aquatic habitat structure, loss of fish and other aquatic populations, and decreased water quality due to increased levels of nutrients, metals, hydrocarbons, bacteria, and other constituents. USEPA (1993) defines hydromodification as the “alteration of the hydrologic characteristics of coastal and non-coastal waters, which in turn could cause degradation of water resources.” Examples of hydromodification in streams include dredging, straightening, and, in some cases, complete stream relocation. Other examples include construction in or along streams, construction and operation of dams and impoundments, channelization in streams, dredging, and land reclamation activities. Hydromodification can also include activities in streams that are being done to maintain the stream’s integrity such as removing snags. Some indirect forms of hydromodification, such as erosion along streambanks or shorelines, are caused by the introduction or maintenance of structures in or adjacent to a waterbody and other activities, including many upland activities, that change the natural physical properties of the waterbody. EPA has grouped hydromodification activities into three categories: (1) channelization and channel modification, (2) dams, and (3) streambank and shoreline erosion. We would like to show you a description here but the site wont allow us. FedCenter - Natural Resources The Natural Resources Program Area includes the latest guidance examples and information resources to aid Federal facilities in managing endangered or threatened ... Nonpoint source pollution - Wikipedia Non-point source (NPS) pollution includes both water and air pollution from diffuse sources. Non-point source water pollution affects a water body from sources such ... State Water Resources Control Board - San Francisco Bay The State Water Resources Control Board web site covers California water quality and rights regulation board meetings laws funding watershed management ... Storm Water Management in California Storm Water Management in California Storm Water As A Resource The California Water Boards have been focused for more than 20 years in the area of storm Nonpoint Source Pollution - water effects environmental ... International Implications Managing nonpoint source pollution is an international challenge. Like the United States many developed countries initially directed ... Urban runoff - Wikipedia Urban runoff is surface runoff of rainwater created by urbanization. This runoff is a major source of flooding and water pollution in urban communities worldwide.
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