Flood-Plain and Channel Aggradation at Selected Bridge Sites in the Iowa and Skunk River Basins, Iowa, HR-350, 1996

(1996) Flood-Plain and Channel Aggradation at Selected Bridge Sites in the Iowa and Skunk River Basins, Iowa, HR-350, 1996. Transportation, Department of

pdf
Preview
PDF
IADOT_hr350_Fld-Plain_Chnnl_Agg_Slctd_Brdg_Sites_IA_Skunk_River_1996.pdf

File Size:2MB

Abstract

Flood-plain and channel-aggradation rates were estimated at selected bridge sites in central and eastern Iowa using four aggradation-measurement methods. Aggradation rates were quantified at 10 bridge sites on the Iowa River upstream of Coralville Lake and at two bridge sites in the central part of Skunk River Basin. Measurement periods used to estimate average aggradation rates ranged in length from 1 to 98 years and varied among methods and sites. A direct comparison cannot be made between aggradation rates calculated using each of the four measurement methods because of differences in time periods and aggradational processes that were measured by each method.

Item Type: Departmental Report
Keywords: Bridges, Equilibrium (Mechanics), Flood plains, Measurement, Rates, Aggradation
Subjects: Transportation
Transportation > Bridges and tunnels
Transportation > Roads and highways
Transportation > Research
Transportation > Environment
Transportation > Environment > Water
ID Code: 16396
Deposited By: Iowa DOT Library
Deposited On: 18 Mar 2014 20:34
Last Modified: 05 Nov 2014 15:56
URI: http://publications.iowa.gov/id/eprint/16396