Meteorologists explain the weird sequence of weather and climate conditions that led to Friday’s deluge, as environmental experts warn the fallout could last for days due to sewage overflows.
such as oils, sewage, fertilizer and street litter can find their way into local lakes and shores, which can be harmful to wildlife and contaminate drinking water. Swimming and boating in these areas can be risky if humans come in contact with the polluted water.
“This can result in short term of hypoxia and fish kills with broader impacts to ecosystem health,” said Dr. Edwin Cowen, director of the DeFrees Hydraulics Laboratory at Cornell University. “The treatment process itself can lead to hazardous by products if algae is in the water,” Cowen said. “[This is] usually avoided by initial filtration, but absent that filtrating you have potential problems.”New York City has a system of 72 flood sensors attached about 10 feet from the ground to sign posts called FloodNet. These sensors record water depths and flood risks in real time, even while it's pouring out, by sending an ultrasonic pulse to the ground.
“The worst of it has been in the Gowanus neighborhood – some of it is stormwater driven and some of it is coastal flooding,” said Brett Branco, a professor of earth and environmental sciences at Brooklyn College and a lead scientist for FloodNet. “We’ve seen photos people have shared on social media from this location.”
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