| They have been for decades, the result of levee construction, the channelization of rivers, dredging, erosion and development. |
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| Other threats include pollution, channelization and dam construction, which have blocked access to suitable spawning sites, causing fragmentation of populations. |
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| Historical and ongoing land use practices have contributed to excessive amounts of nutrients and bacteria in the watershed, sedimentation, channelization and habitat loss. |
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| The loss and degradation of spawning habitat due to water management practices, particularly the regulation of water levels and channelization, have contributed to declines in Bigmouth Buffalo in the Qu'Appelle River basin. |
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| Groundwater discharge may be impacted by activities such as the channelization of water courses that restrict the motion of groundwater across the groundwater and surface water interface. |
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| River regulation through the creation of dams and reservoirs, as well as channelization, can degrade and destroy dipper habitat. |
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| Section 404 of the Clean Water Act does not regulate activities such as drainage, ditching, and channelization for agricultural production. |
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| Riverine habitats have been extensively modified by damming and by channelization, the latter being the practice of straightening rivers by forcing them to flow along predetermined channels. |
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| Channelization and control optimized for mobile voice services. |
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| Channelization and control for mobile multimedia services. |
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