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Relative Suspended Sediment Load <br /> �� <br /> ,eaiama�, <br /> I.piiadhxal lanti In <br /> routlwf ereps <br /> AyriaAhaN IatW in rvr�cvps <br /> t.end ttH w��p��d <br /> o Madium tl�nrtry <br /> Increaainp � �. <br /> intenarly <br /> � � � Freeway <br /> Agticultural land in row crops .. <br /> without manapsmerrt pracOcc� <br /> �4reaa under <br /> �" — �--r— aavdoP+nertt <br /> Figure 1 - Sediment Losses Related to Land Use Practices <br /> Source: Illinois Urban Manua1. <br /> Recommendations: <br /> • Identify and address sites where streambank erosion is occurring at a level that warrants treatment <br /> with conservation practices. <br /> • Encourage the installation and adoption of conservation measures to minimize erosion and <br /> sedimentation on farmland. ' <br /> • Utilize an ordinance that regulates sites under development and prevents soil erosion and <br /> sedimentation offsite. The ordinances would provide criteria for plan development, site design <br /> requirements, and practice maintenance. Encourage the continued use of the local SWCD and NRCS � <br /> trained personnel in the development of erosion control plans. � <br /> • Use Best Management Practices (BMPs)on construction sites and developing areas as identified in ' <br /> the Illinois Urban Manua1. ' <br /> • Treat erosion occurring on land with slopes greater than 5%and adjacent to the creek or a tributary. I' <br /> These areas have a higher potential for erosion than less sloping ground, as well as the possibility to <br /> erode into the creek. <br /> • Demonstrate conservation practices on highly visible sites. These areas become examples of <br /> conservation on the land and point out how effective local efforts have been. Local, state or federal <br /> cost share dollars may be available for these installation of these practices. <br /> � Monitor areas where significant land use changes are anticipated for increased erosion and sediment <br /> rates. <br /> • Utilize filter and buffer strips on areas next to bodies of water and drainageways that do not currently <br /> have adequate buffers. <br /> � Conservation Practices Practice needs identified from 14 Estimatio�of practice" i <br /> I 160 acre sampling sites �needs for watershed <br /> i Grass Watenvay � 11975 feet or 11 acres � 60,984 feet or 56 acres � <br /> I Terraces ; 2500 feet � 6600 feet ; <br /> ; WASCOB '; 6 WASCOBs i 16 WASCOBs � <br /> '; Grade Stabilization Structure 7 stn�ctures I 31 structures � <br /> ; Mulch-till ' 319 acres i 2850 acres <br /> � No-till ! 232 acres '; 2050 acres i <br /> i Buffer siri s I 12 acres �� 200 acres <br /> 3treambank Stabilizalion on ; 770 feet � 8400 feet <br /> severe sites � <br /> OS/31/02 5 <br />