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
| Aug 28, 2013
OSHA moves to reduced exposure to crystalline silica
Under a proposal from the Occupational Safety and Health Administration, the new permissible exposure limit to crystalline silica per cubic meter of air could be changed from 250 micrograms to 50 micrograms.
| Aug 28, 2013
IPMSC chooses members of committee for global property measurement standard
The International Property Measurement Standards Coalition (IPMSC) has selected 19 real estate experts from around the world to join its Standards Setting Committee to develop a global standard for measuring property.
| Aug 20, 2013
Code amendment in Dallas would limit building exterior reflectivity
The Dallas City Council is expected to vote soon on a proposed code amendment that would limit a building’s exterior reflectivity of “visible light” to 15%.
| Aug 20, 2013
Developers of Hollywood skyscraper will dig to see if earthquake fault is on site
New York-based Millennium Partners have agreed to dig a trench on a Hollywood, Calif., property to help determine whether an earthquake fault runs under it.
| Aug 20, 2013
Chinese-made resilient flooring products achieve FloorScore Indoor Air Quality certification
Five of China's leading manufacturers of resilient flooring recently received FloorScore Indoor Air Quality certification from SCS Global Services for their luxury vinyl tile (LVT) products.
| Aug 20, 2013
Florida to get $1 million federal grant to study sinkhole vulnerability
The Florida Geological Survey and the state’s emergency department will receive a $1.08 million federal grant to study sinkhole vulnerability.
| Aug 20, 2013
L.A. City Council approves plan for new $1 billion Watts development
Los Angeles city officials have voted to revitalize a notorious Watts housing project with shops, town homes, and green spaces.
| Aug 19, 2013
Baltimore City Council committee OKs taxpayer assistance for $1.8 billion Harbor Point mixed-use project
A Baltimore City Council committee approved a plan to give millions in taxpayer assistance to the $1.8 billion Harbor Point development.
| Aug 19, 2013
Philadelphia to enforce building energy benchmarking in October
The City of Philadelphia has begun to send out compliance notices regarding its Building Energy Benchmarking Law.
| Aug 19, 2013
Eliminating Fannie Mae, Freddie Mac part of Obama’s housing proposal
President Barack Obama this month outlined a series of policies he said would continue to boost the housing market, including a long-ignored legislative proposal that would allow more Americans to refinance at current low mortgage rates.
