U.S. cities are revamping how they handle stormwater to reduce flooding and capture rainfall and recharge aquifers.
New policies reflect a change in mindset from treating stormwater as a nuisance to be quickly diverted away to capturing it as a resource. U.S. urban areas generate an estimated 59.5 million acre-feet of stormwater runoff per year on average, equal to 53 billion gallons a day. That much water is equal to 93% of the country’s total municipal and industrial water use.
In Los Angeles, the nonprofit Trust for Public Land has been removing impervious surfaces in alleys and school grounds and replacing asphalt with natural infrastructure, including trees and pervious surfaces.
In the eastern part of the country where rainfall is more plentiful, cities including New York and Pittsburgh are installing green solutions such as rain gardens and bioswales. Cities are also instituting stormwater fees, charging landowners based on the area of impervious surfaces on a property. More cities are also using permeable pavers for sidewalks and parking lots.
Recharging aquifers via more permeable surface areas not only makes more groundwater available, but it also helps prevent land subsidence that can cause buildings to slowly sink.
Related Stories
Codes and Standards | Dec 15, 2020
Despite COVID-19 population flight, don’t write off big cities yet
Lure of urban life and jobs may draw people back after pandemic subsides.
Codes and Standards | Dec 10, 2020
Test method for vertical fenestration installation procedures updated
FGIA issues first update for document created in 2005.
Codes and Standards | Dec 10, 2020
Updated EPDs for Polyiso Roof and Wall Insulation; EPD for Polyiso High-Density Cover Boards published
Cover Boards EPD is an industry first.
Codes and Standards | Dec 9, 2020
Newly formed Rainscreen Association aims to be recognized authority on rainscreen assemblies
Will address innovations in material performance and building designs.
Codes and Standards | Dec 9, 2020
Investors want building resiliency plans and risk mitigation practices
Owners should assess risk, insurance coverage, and ability to withstand disasters.
Codes and Standards | Dec 4, 2020
OSHA cites more than 200 employers for COVID-19 violations
Agency releases guidance on lessons learned from pandemic inspections.
Codes and Standards | Dec 1, 2020
Pandemic spurs nearly 16 million people to move from major cities
Most of the movement seems permanent.
Codes and Standards | Nov 30, 2020
USGBC ready to catalyze LEED Positive future
New programs, updates will spur shift to regenerative strategies.
Codes and Standards | Nov 30, 2020
Updated spec for self-adhering flashing surrounding exterior fenestration products released
FGIA document was last updated in 2013.
Codes and Standards | Nov 30, 2020
Finalized 2021 Energy Code leaves out future-proofing provision
Appeals process nixed requirement for residential electrification readiness.