In southeastern Michigan, the Huron River Trail benefits the community through spending at local businesses, higher property values along the river, and recreational enjoyment. The authors also measure benefits from biological diversity, wetland flood reduction, and aesthetic values but these are connected to the river, not just the trail.
Isley, P., C. Glupker, E. Nordman, J. Cowie, H. LaMay. 2017. The Economic Impact of the Huron River. Allendale, MI: Seidman Research Office, Grand Valley State University.