Ellicott City, Maryland suffered its second damaging “1,000-year” flood in two years last month.
The city is in a vulnerable location at the foot of a hill where river branches meet the Patapsco River. Another factor, a lot of impermeable concrete, exacerbated the flood.
Ellicott City has thrived in recent years with robust development. About one-third of the watershed that feeds into the historic community is now covered by roads, rooftops, sidewalks, and other hard surfaces.
Since the first major flood in 2016, the county has designed and engineered more stormwater retention facilities, but these projects will take time to implement. Across most of the U.S, impermeable surfaces make up just 1% percent of the land. In many cities, though, hardscapes account for 40% or more of the land area, leaving them vulnerable to floods.
Related Stories
| Nov 26, 2014
ASTM International develops first product category rules for asphalt roofing industry
The Asphalt Roofing Manufacturers Association (ARMA) and ASTM International have developed Product Category Rules (PCR) for asphalt roofing in North America.
| Nov 26, 2014
International Green Construction Code will include option for outcome-based approach
The outcome-based approach requires the building owner to provide the building’s utility bills for a 12-month period within three years.
| Nov 20, 2014
Pentagon is reviewing hospital construction standards
An independent review panel of military specialists met with healthcare leaders Nov. 12 to consider whether construction standards for medical centers should be strengthened to align with industry best practices.
| Nov 20, 2014
ConsensusDocs releases first standard agreement for commissioning contracting
The new standard contract provides a contractual vehicle for owners to save significant money from operation and maintenance costs regarding energy performance.
| Nov 20, 2014
Revamped zoning is transforming several New Jersey downtowns
The zoning policy shift could produce the biggest transformation of North New Jersey’s downtowns since the arrival of malls pulled shoppers away from town centers in the 1960s and 1970s.
| Nov 20, 2014
ANSI approves 2015 Wood-Frame Construction Manual standard
The American Wood Council's 2015 “Wood-Frame Construction Manual for One- and Two-Family Dwellings” (WFCM ) has been approved as an American National Standard by the American National Standards Institute (ANSI).
| Nov 17, 2014
AAMA releases new blast hazard mitigation specifications for vertical fenestration systems
This document provides a guide for manufacturers, architects/specifiers, contractors, and building owners for specifying types of systems and services to meet the requirements of blast hazard mitigation.
| Nov 17, 2014
National Roofing Contractors Assn. offers guide for LEED v4 provisions
National Roofing Contractors Association has released LEED v4: Roofing-related Provisions, a document that examines the roofing-related provisions of LEED v4.
| Nov 14, 2014
Army net-zero initiative moving past pilot stage
The U.S Army's ambitious net-zero initiative has had several successful pilot trials, and planners are prepared to expand the nine-part demonstration field to scores of other Army facilities.
| Nov 14, 2014
Former U.S. Treasury Secretary Paulson works to upgrade China’s building codes
Former U.S. Treasury Secretary Hank Paulson is today focused on making new construction in China more energy efficient by working with leaders to upgrade building codes.
