Urbanization's Drainage Consequence

by Paul O. Reimer, Assoc.; Project Manager; George S. Nolte and Associates, San Jose, CA; Drainage & Flood Control Background Study; San Dieog County Comprehensive Planning Organization, San Diego, CA,
Joseph B. Franzini, (F.ASCE), Professor; Hydrology and Hydraulic Consultant; Dept. of Civil Engineering, Stanford University, Stanford, CA; George S. Nolte and Associates, San Jose, CA,


Serial Information: Journal of the Urban Planning and Development Division, 1971, Vol. 97, Issue 2, Pg. 217-237


Document Type: Journal Paper

Abstract: A computer methodology (URB DRA CONS) for the preliminary costing of flood control facilities resulting from alternate land use distributions in the tributary watershed is presented including pilot application to a 15 sq mile watershed in San Diego County, CA. Channel flows for various recurrence intervals with any given pattern of land use and channel improvement are determined using a computer program patterned after the U.S. Soil Conservation Service hydrologic procedures. Results from the pilot study revealed that changes in land use and channel improvement are often about equally responsible for the increased flow from urbanization. The approximate cost of another computer program that seeks the least-cost design of channel cross section through reiteration. The application of URB DRA CONS methodology provides information on the flood protection requirement consequences of land-use alternatives.

Subject Headings: Drainage | Urban areas | Land use | Channel flow | Computer software | Floods | Watersheds | Flow control | Flow distribution | Flow patterns | California | North America | United States | San Diego

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