Cumulative Effects and Catchment Management
A variety of human activities can produce changes in runoff and erosion from catchments, resulting ultimately in alterations to water quality and channel conditions.  These activities include dam construction and water diversions (discussed on the page Effects of Dams and Diversions), livestock grazing, road construction, timber harvest, conversion to agriculture, and urbanization.  To sensibly approach these problems requires that the processes be understood, and management undertaken, at a catchment scale.
 

SELECTED RELEVANT PUBLICATIONS

Kondolf, G.M., H. Piégay, and N. Landon. Changes since 1830 in the riparian zone of the lower Eygues River, France. Landscape Ecology (in press)

Kondolf, G.M., H. Piégay, and N. Landon. 2002. Channel response to increased and decreased bedload supply from land-use change: Contrasts between two catchments. Geomorphology 45:35-51.

Liébault, F., P. Clément, H. Piégay, C.F. Rogers, G.M. Kondolf, and N. Landon. 2002. Contemporary channel changes in the Eygues River basin, southern French Prealps: The relationship of sub-basin variability to watershed characteristics. Geomorphology 45:53-66.

Kondolf, G.M. 2001. Planning approaches to mitigating adverse human impacts on land-inland-water ecotones. Ecohydrology and Hydrobiology 1:111-116.

Kondolf, G.M., and P. Downs. 1996. Catchment approach to channel restoration. In A. Brookes and D. Shields (eds.) River Channel Restoration (pp.129-148). John Wiley & Sons, Chichester.

Kondolf, G.M., R. Kattelmann, M. Embury, and D.C. Erman. 1996. Status of riparian habitat. Chapter 36 in Sierra Nevada Ecosystem Project: Final Report to Congress, Vol. II, Assessments and scientific basis for management options. Report No. 88, Centers for Water and Wildland Resources, University of California, Davis, p.36-1 - 36-22.

Kondolf, G.M. 1995. Planning approaches to mitigating adverse human impacts on land-inland-water ecotones. In Proceedings of the UNESCO/MAB Conference, "Fish and Land/Inland Water Ecotones", Zakopane, Poland, May 1995.

Kondolf, G.M. 1994. Cumulative watershed effects in the Sequoia National Forest: Summary of oral testimony before the House Agriculture Committee, 9 March 1994. Published in Hearing before the Subcommittee on Specialty Crops and Natural Resources on H.R. 2153, the Giant Sequoia Preservation Act of 1993. House of Representatives Serial No. 103-58, Washington, DC.

Kondolf, G.M. 1994. Livestock grazing and habitat for a threatened species: Land-use decisions under scientific uncertainty in the White Mountains of California. Environmental Management 18(4):501-509.

Kondolf, G.M. 1993. Lag in stream channel adjustment to livestock exclosure in the White Mountains of California. Restoration Ecology 1:226-230.

Charbonneau, R., and G.M. Kondolf. 1993. Land use change in California: Nonpoint source water quality impacts. Environmental Management 17:453-460.

Kondolf, G.M., and E.A. Keller. 1991. Management of urbanizing watersheds. In California Watersheds at the Urban Interface: Proceedings of the Third Biennial Watersheds Conference (75:27-40). University of California Water Resources Center, Riverside.
Walnut Creek passing through Walnut Creek and Concord, California