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
Codes and Standards | Jul 15, 2021
Three drywall code-referenced publications have been updated
Include guidance on fire resistance, sound control, application, and finishing.
Codes and Standards | Jul 14, 2021
Biden’s infrastructure proposal includes massive investment in school buildings
‘Once in a lifetime opportunity’ to upgrade HVAC and other key systems.
Codes and Standards | Jul 13, 2021
Reluctance to fund maintenance on older condos is a serious problem
Owner associations defer needed work, putting properties at risk.
Codes and Standards | Jul 12, 2021
Regulations on hydrofluorocarbons reduce roof insulation options
Canada, some U.S. states ban HFC blowing agents used in closed-cell foam.
Codes and Standards | Jul 8, 2021
New York City shuts down 322 construction sites for unsafe conditions
Action comes as inspectors visit more than 2,100 sites.
Codes and Standards | Jul 7, 2021
Bechtel, Nautilus partner on sustainable, high-performance data centers
Facilities would use 70% less power for cooling, eliminate consumption of drinking water.
Codes and Standards | Jul 7, 2021
Surfside condo collapse could spur new legislation
Natl. Institute of Standards and Technology is investigating.
Codes and Standards | Jul 7, 2021
Intl. Code Council appoints committees to lead energy code development
One-third of appointees are government regulators.
Codes and Standards | Jul 1, 2021
COVID-19 made payment delays to contractors much worse
Only one in ten companies is always getting paid in full.
Codes and Standards | Jun 30, 2021
New resource for public sector organizations to develop energy data management program
Dept. of Energy document contains more than 30 examples of successful implementations.