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Overview of landslide problems, research, and mitigation, Cincinnati, Ohio, area

Bulletin 2059-A

By:
and

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Abstract

Landslides cause much damage to property throughout the metropolitan area of Cincinnati, Ohio. Most landslides occur in unconsolidated deposits, including colluvium, till, glacial lake clays, and man-made fill derived from colluvium and glacial deposits. Landslides in thin colluvium are widespread on steeper slopes that wall the valleys of the Ohio River and its tributaries. Abundant landslides also form in thick colluvium on flatter slopes, especially where the colluvium has been disturbed by earthwork. Unusual block glides and block-extrusion glides form where till rests on lake clay. Through the years, knowledge of the distribution and causes of landslides has increased as a result of many investigations. This knowledge became part of the basis for landslide mitigation programs adopted by the City of Cincinnati and Hamilton County, Ohio. In 1974 the Cincinnati City Council passed an excavation and fill ordinance to help reduce landslide damage in areas of new construction. In 1989 following much additional study, Cincinnati created a geotechnical office within its Department of Public Works. The office, which is staffed by a geotechnical engineer, an engineering geologist, and two technicians, carries out a mitigation program. Since 1989, members of the geotechnical staff have worked in several ways to reduce landslide damage in the city; their work includes engineering-geologic mapping of selected parts of the city, inspection of retaining walls that impact public right-of-way, review of proposed construction in hillside areas, inspecting and arranging for repair of landslide areas that affect city property, and compiling geologic and geotechnical data on landslide areas within the city. In 1990, Hamilton County also adopted an excavation and fill ordinance to help reduce the damage due to landslides in areas of new construction.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Overview of landslide problems, research, and mitigation, Cincinnati, Ohio, area
Series title:
Bulletin
Series number:
2059
Chapter:
A
Year Published:
1996
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Washington, D.C.
Contributing office(s):
Ohio Water Science Center
Description:
iii, 33 p.
Country:
United States
State:
Ohio
County:
Hamilton County
City:
Cincinnati