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United States Department of Agriculture

Agricultural Research Service

Research Project: SYSTEMS AND TECHNOLOGIES FOR SUSTAINABLE SITE-SPECIFIC SOIL AND CROP MANAGEMENT

Location: Cropping Systems and Water Quality Research

Title: Terrace Layout Using a Computer Assisted System

Authors
item Golden, Melissa -
item Thompson, Allen -
item Gantzer, Clark -
item Sudduth, Kenneth
item Mayhan, Bryan -

Submitted to: International Soil and Water Conservation Conference
Publication Type: Abstract Only
Publication Acceptance Date: July 11, 2009
Publication Date: July 11, 2009
Citation: Golden, M.K., Thompson, A.L., Gantzer, C.J., Sudduth, K.A., Mayhan, B.D. 2009. Terrace Layout Using a Computer Assisted System [abstratct]. Soil and Water Conservation Annual Conference, July 11-15, 2009, Dearborn, Michigan. p. 77.

Technical Abstract: Development of a web-based terrace design tool based on the MOTERR program is presented, along with representative layouts for conventional and parallel terrace systems. Using digital elevation maps and geographic information systems (GIS), this tool utilizes personal computers to rapidly construct multiple terrace layout options for comparison and selection of the preferred field layout. Current cost-share terrace layout protocol is time limited, and does not readily lend itself to examine multiple field systems for alignment, spacing, and water removal. The new tool permits users to select field boundaries for terracing, location of the ridgeline, and location of the number of waterways and divides to facilitate specific equipment and row spacing. Graphical and text output is provided for smoothed conventional and parallel terrace systems. The user can select the preferred conventional terrace to use as the key terrace in designing the parallel system. Terrace channel slope is limited to maximum permissible non-erosive water velocity. Total terrace length is calculated to estimate final terrace construction cost. A data base system for user file retrieval for future or additional design determination/verification is provided. Reliability of the terrace layout designs is presented by comparing selected results to actual NRCS approved field terrace installations.

Last Modified: 4/16/2014
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