CORVALLIS, Ore. Engineers at Oregon State University have developed a new interactive system to create networks of small wetlands in Midwest farmlands, which could help the region prevent massive spring floods and also retain water and mitigate droughts in a warming climate.
The planning tool, which is being developed and tested in a crop-dominated watershed near Indianapolis, is designed to identify the small areas best suited to wetland development, optimize their location and size, and restore a significant portion of the region's historic water storage ability by using only a small fraction of its land.
Using this approach, the researchers found they could capture the runoff from 29 percent of a watershed using only 1.5 percent of the entire area.
The findings were published in Ecological Engineering, a professional journal, and a website is now available at http://wrestore.iupui.edu/ that allows users to apply the principles to their own land.
The need for new approaches to assist farmers and agencies to work together and use science-based methods is becoming critical, experts say. Massive floods and summer droughts have become more common and intense in the Midwest because of climate change and decades of land management that drains water rapidly into rivers via tile drains.
"The lands of the Midwest, which is one of the great food producing areas of the world, now bear little resemblance to their historic form, which included millions of acres of small lakes and wetlands that have now been drained," said Meghna Babbar-Sebens, an assistant professor of civil and construction engineering at Oregon State. "Agriculture, deforestation, urbanization and residential development have all played a role.
"We have to find some way to retain and slowly release water, both to use it for crops and to prevent flooding," Babbar-Sebens said. "There's a
|Contact: Meghna Babbar-Sebens|
Oregon State University