Severe Weather 101: Flood Basics - NOAA National Severe Storms Laboratory
网页Flooding is an overflowing of water onto land that is normally dry. Floods can happen during heavy rains, when ocean waves come on shore, when snow melts quickly, or when dams or levees break. Damaging flooding may happen with only a few inches of water, or it may cover a house to the rooftop.
What Seasons Do Floods Occur? - Sciencing
网页2018年3月13日 · Though there is no specific flood season, most flooding occurs in the U.S. from spring to fall. Flooding is also more likely to occur in areas which have seasonal rainstorms, flood-prevalent topography like desert topsoil or a location along the coast.
Floods - Ready.gov
网页2024年6月7日 · Flooding is a temporary overflow of water onto land that is normally dry. Floods are the most common disaster in the United States. Failing to evacuate flooded areas or entering flood waters can lead to injury or death. Floods may: Result from rain, snow, coastal storms, storm surges and overflows of dams and other water systems.
Flood Safety Tips and Resources - National Weather Service
网页Flooding is a coast-to-coast threat to some part of the United States and its territories nearly every day of the year. This site is designed to teach you how to stay safe in a flood event.
Spring Outlook: Historic, widespread flooding to continue …
网页2019年3月21日 · Nearly two-thirds of the Lower 48 states face an elevated risk for flooding through May, with the potential for major or moderate flooding in 25 states, according to NOAA’s U.S. Spring Outlook issued today.
Flood Related Hazards - National Weather Service
网页Flooding is a coast-to-coast threat to the United States and its territories in all months of the year. Flooding typically occurs when prolonged rain falls over several days, when intense rain falls over a short period of time, or when an ice or debris jam causes a river or stream to overflow onto the surrounding area.
USGS Flood Information | U.S. Geological Survey
网页2019年3月4日 · USGS Flood Inundation Maps, along with Internet information regarding current stage from the USGS streamgage, provide emergency management personnel and residents with information that is critical for flood-response activities, such as evacuations and road closures, as well as for post-flood recovery efforts.
Flooding Facts, Causes, and Prevention | NRDC
网页2023年11月3日 · A growing number of coastal and inland communities are finding themselves underwater. Here’s how climate change plays a role in flooding, and what we can do about it.
2021 National Weather Service - Office of Water Prediction
网页2021年3月18日 · The 2021 National Hydrologic Assessment offers an analysis of flood risk, water supply, and ice break-up and jam flooding for spring 2021 based on late summer, fall, and winter precipitation, frost depth, soil saturation levels, snowpack, current streamflow, and projected spring weather.
The Many Effects of Flooding - National Geographic Society
网页2024年7月19日 · Floods are a force of nature, and their consequences, both positive and negative, are strongly felt by affected ecosystems. Floods can be destructive to humans and the natural environment, but they also help to drive biodiversity and are essential to the functioning of many ecosystems.
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