The document discusses Peoria, Illinois' stream buffer ordinance. It defines a stream buffer as a protective, forested strip of land along both sides of a stream. Benefits of stream buffers include erosion control, flood management, water quality protection, and aesthetic and recreational value. Peoria developed its ordinance due to problems like unstable slopes and floodplain encroachment. The ordinance requires a 30-50 foot vegetated buffer on each side of streams and includes the 100-year floodplain. It allows for traditional compliance with buffer zones or alternative compliance through other conservation methods. The ordinance has led to reforestation of buffer areas and enforcement through fines for violations.