The U.S. Geological Survey (USGS) has released new interactive mappers and models for its online SPAtially Referenced Regression On Watershed attributes (SPARROW) tool. The new models estimate streamflow and the concurrent yields of total nitrogen, total phosphorus, and suspended sediment in both monitored and unmonitored inland stream reaches across the country as they feed into […]
Predicting the size and expected runoff volumes from hailstorms is notoriously difficult, according to researchers with the U.S. National Center for Atmospheric Research (NCAR). Because cloud systems that produce rain often have different features than those that produce hail, conventional prediction methods often fail to yield accurate forecasts. NCAR researchers investigating the challenge of hailstorm […]
To help curb the effects of urban runoff on streambank erosion, the question municipalities must confront is whether to reduce flows or toughen channel banks. The best answer, according to Rod Lammers, lead author of a new University of Georgia (Athens) research article exploring ways to optimize erosion control, is both. The challenge is getting […]
New visualization tool mixes FEMA data with video-game technology to model flood damages before they occur The U.S. Federal Emergency Management Agency (FEMA) offers a long list of tools and datasets to help U.S. residents understand their specific property’s risk of experiencing severe flooding. However, terms like 100-year flood and storm surge do little to […]
According to automotive industry analysts with Hedges & Co. (Hudson, Ohio), there were more than 275 million registered motor vehicles in the U.S. in 2018. Accommodating that number of vehicles requires an enormous network of parking lots, the vast majority of which are made of impervious pavement that rainwater cannot infiltrate. Until now, researchers have […]
Many of the modeling tools that public works agencies, disaster response organizations, and watershed managers use to predict the effects of flooding from major storms do not consider a detail that makes a major difference, according to new research: land elevation. A study published in May in the journal Nature Communications describes a new flood-modeling […]
Quebec City has deployed a real-time decision-support system that uses modeling, monitoring, and other measures to regulate flooding conditions for a 100-year storm event. Authors Diana Qing Tao and Martin Pleau of Tetra Tech and Denis Brisson and Nathalie Jolicoeur of the City of Quebec explain how the real-time control (RTC) system provides flood protection. […]
The U.S. Geological Survey (USGS) is working with the U.S. Environmental Protection Agency (EPA) to combine two popular streamflow analysis tools into a single, integrated resource. The Surface Water Toolbox (SWToolbox), which has not yet been released to the public, will allow users to compute an extensive number of metrics associated with modeling how surface […]
In the lowest and most arid parts of the Colorado River basin, moisture from the ground rises into the atmosphere before condensing rapidly to form frequent and sudden thunderstorms. These storms, which typically control the flow of runoff, provide irrigation for river-bank plants, supplement water supplies, and affect the chance that the river will flood, […]
A new study warns that extreme precipitation over land will increase in the world’s wettest and driest areas, with the hydrological cycle intensifying as a result of global warming. Released by Nature Climate Change, a monthly journal dedicated to publishing the most significant and cutting-edge research on the science of climate change including its impacts […]
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