Urbanization and accompanying construction increase erosion rates from five to 200 times or more in the eartern United States, and sediment yields in streams by comparable amounts. Data from the United Kingdom, Japan, Canada, and Mexico suggest roughly similar ranges. Increased discharge from urban areas combined with increases in sediment concentration on the order of 2 to 50-fold are demonstrated in individual storms and in seasonal and annual variations in the U.K. Potential for erosion below dams parallels a similar potential from urbanized areas after construction. Nomograms relating area under construction, basin area, and erosion rates provide useful tools for management. Additional information is needed on sediment transport by storm rainfalls of varying frequency and magnitude, on accumulation and movement of sediment in channels and recovery of stream biota, and on channel enlargement resulting from urbanization. /Author/

  • Corporate Authors:

    International Association of Hydrological Sciences

    Institute of Hydrology, 1909 K Street, NW
    Washington, DC  United States  20006
  • Authors:
    • Wolman, M G
  • Publication Date: 1975-3

Media Info

  • Pagination: p. 117-125
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00127219
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 14 1976 12:00AM