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SECTION 2 - HUMAN ACTIVITIES THAT ALTER STREAM CORRIDORS <br />Urbanization <br />We are drawn to stream corridors as attractive places to live and work. <br />a-- <br />0 <br />d <br />C? <br />0 <br />0 <br />^7 <br />?n <br />0 <br />m <br />z <br />C? <br />Streambank armoring <br />How Urbanization Alters Stream <br />Corridors <br />• Building in floodplain <br />• Channelization / culverts <br />• Impervious surfaces create increased <br />runoff and higher peak flows <br />• Nonpoint source pollution <br />• Fragmentation and loss of habitat <br />• Loss of floodplain through building <br />levees <br />Lessening Our Negative Impact <br />• Utilize setbacks from streams and <br />create stream buffers <br />• Rehabilitate channels that have been <br />armored or straightened <br />• Revegetate riparian areas <br />• Create wetlands and other stormwater <br />retention areas <br />• Protect stream corridor lands as open <br />space via fee purchase or conservation <br />easements <br />28 <br />Channel constriction along Boulder Creek