Home Who We Are Member Groups About the Watershed Fisheries Recreation Water Resources Photo Tour How You Can Help Volunteer Committees Free Trees! Knotweed Projects & Programs Watershed Assessments Fish Passage Action Plan Other Pesticide Reduction Newsletter Calendar Links Contact Us © 2008 Clackamas River Basin Council		Filter out sediments Riparian buffers act as natural sieves, straining unwanted soil particles and pollutants from reaching our waterways. When rainwater runs over bare soil or wide grassy lawns, it picks up tiny sediments and pollutants, washing them into our rivers and streams. Left untreated, stormwater runoff can wash excess fertilizers and pesticides into the river, leading to algal blooms, which are not only unsightly but also detrimental to endangered salmon populations. In addition to reducing sedimentation, the presence of a healthy riparian buffer also increases the rate of groundwater infiltration.
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