CONTROL OF EROSION AND SEDIMENT DEPOSITION

CONTROLLING SEDIMENTATION INVOLVES 3 PROCESSES- EROSION, TRANSPORTATION, AND DEPOSITION. THESE PROCESSES ARE NATURAL IN MAINTAINING AN ECOLOGICAL EQUILIBRIUM, HOWEVER, IF ANY ONE PROCESS IS ACCELERATED THEN COSTS OF CORRECTIVE MEASURES MAY NOT ACCURATELY REFLECT THE ACTUAL DESTRUCTION WROUGHT. LAND USE FOR CONSTRUCTION PURPOSES ALTERS THE SOIL COVER IN MAY WAYS, OFTEN DETRIMENTALLY AFFECTING THE DRAINAGE, RUNOFF AND STREAM FLOW. PROTECTIVE VEGETATIVE COVER IS REMOVED, EXCAVATIONS ARE MADE AND THE REMOVED MATERIAL STOCKPILED WITHOUT COVER, SLOPES ARE MODIFIED BY MAKING STEEP CUTS AND FILLS, AND THE PHYSICAL PROPERTIES OF THE SOIL ARE CHANGED. IF TEMPORARY MEASURES ARE ENACTED SUCH AS REVISING CONSTRUCTION SCHEDULES TO CONFORM TO PRECIPITATION PATTERNS OR SEEDING AND/OR REVEGETATING AREAS, THEN SEDIMENTATION CAN BE CONTROLLED TO A CERTAIN EXTENT: IF PROTECTIVE MEASURES ARE UTILIZED ON EXPOSED SOIL SURFACE SUCH AS PLASTIC SHEETS, MULCHES, ETC., THEN EROSION, RUNOFF AND SEDIMENTS CAN BE CONTROLLED TOO. IN ADDITION RUNOFF CAN BE CONTROLLED BY INSTALLING TEMPORARY DIVERSIONS, BERMS, SLOPE DRAINS, AND FLOW BARRIERS, ETC. SEDIMENTS CAN BE COLLECTED BY USING VARIOUS SIZES OF STRUCTURES- BARRIERS AND BASINS. ENFORCEMENT OF EROSION AND SEDIMENT CONTROL PROGRAMS ULTIMATELY DEPENDS UPON THE ADMINISTRATIVE AGENCIES RESPONSIBLE FOR CARRYING THESE PROGRAMS OUT WITHIN THE FEDERAL AND STATE LEVELS OF GOVERNMENT.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1606878
• Publication Date: 1972-6

Media Info

• Features: Figures; Photos;
• Pagination: p. 68-72
• Serial:
  • Public Works
  • Volume: 103
  • Issue Number: 6
  • Publisher: Hanley Wood
  • ISSN: 0033-3840
  • Serial URL: http://www.pwmag.com

Subject/Index Terms

• TRT Terms: Costs; Drainage; Erosion control; Flow; Runoff; Sedimentation; Sediments; Soils; Streamflow; Streams; Vegetation
• Old TRIS Terms: Precipitation
• Subject Areas: Finance; Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204515
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 9 1973 12:00AM