An analysis of tidal levels and flood data by the news organization Reuters concludes that flooding has increased along the Eastern Seaboard over the past four decades.
During that period, the number of days a year that tidal waters reached or exceeded National Oceanic and Atmospheric Administration flood thresholds more than tripled in many places. The trend roughly tracks a global rise in sea levels, with an average rise of 8 inches in the past century, according to the 2014 National Climate Assessment.
At flood threshold, water begins pool on streets. If it rises beyond that point, it can close roads, damage property, and overwhelm drainage systems. Since 2001, water has reached flood levels an average of 20 days or more a year in Annapolis, Maryland; Wilmington, North Carolina; Washington, D.C.; Atlantic City, New Jersey; Sandy Hook, New Jersey; and Charleston, South Carolina. Before 1971, none of those locations averaged more than five days a year of flooding.
Reuters’s analysis was based on more than 25 million hourly tide-gauge readings from nearly 70 sites on the Atlantic, Gulf, and Pacific coasts and a comparison of that data to NOAA flood thresholds. Reuters then narrowed the analysis to 25 gauges with data spanning at least 50 years. The organization plans to publish a more in-depth examination of rising sea levels later this year.
(http://www.reuters.com/article/2014/07/10/us-usa-sealevel-flood-idUSKBN0FF20220140710)
Related Stories
Codes and Standards | May 1, 2020
OSHA says most employers don’t have to track worker COVID-19 infections
Agency clarifies responsibility for contractors, others.
Codes and Standards | Apr 29, 2020
New York City tightens restrictions on construction during pandemic
Dept. of Buildings has issued more than 100 violations and stop-work orders.
Codes and Standards | Apr 28, 2020
ASHRAE, WELL panels to tackle revising standards to limit spread of viruses in buildings
Will examine ways to reduce infectious threats through building designs and operations.
Codes and Standards | Apr 24, 2020
Dept. of Labor issues guidance for respiratory protection during N95 shortage
Elastomeric respirators or powered, air-purifying respirators, and expired N95s are allowable alternatives
Codes and Standards | Apr 23, 2020
Group will create ecosystem for smart building data
Seven Finnish companies aim to integrate all technical systems into a single platform.
Codes and Standards | Apr 23, 2020
COVID-19 epidemic demonstrates value of flexible hospital space
Some rooms being repurposed for ICU care.
Codes and Standards | Apr 15, 2020
Embodied carbon footprint can be reduced by using conventional materials
High-SCM concrete, and cellulose and wood fiber insulation among the greener alternatives.
Coronavirus | Apr 13, 2020
COVID-19 alert: City conducts a 'virtual building inspection' to allow Starbucks and bank to open
Bothell, Wash., issues a certificate of occupancy to developer after inspecting the property online.
Codes and Standards | Apr 13, 2020
Design competition focuses on reducing urban heat island effect
Cool Abu Dhabi aims to transform urban life in the Middle East.
Codes and Standards | Apr 13, 2020
What building science says about reducing COVID-19 transmission
Impact of temperature and relative humidity is unclear.