Valuable information on conservation buffers is still flowing from Bear Creek in Story County, Iowa. A riparian buffer first established in 1990 on the Ron Risdal farm has been studied extensively for ten years (USDA NRCS via Wikipedia)

Multiple rows of trees and shrubs, as well as a native grass strip, combine in a riparian buffer to protect Bear Creek in Story County, Iowa. The buffer, on the Ron Risdal and Lonnie Strum farms, is a nationally designated demonstration area for riparian buffers.