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The Intelligent River

A unique project at South Carolina's Clemson University aims to automate the collection of data, to enable better management of natural resources.
By Mark Roberti
Dec 01, 2011—Many countries are placing growing demands on their rivers, using them to generate power, for industrial cooling and more, impacting humans and wildlife. A unique project at South Carolina's Clemson University, dubbed the Intelligent River, aims to automate the collection of data, to enable better management of this critical natural resource. The research team plans to put wireless sensors in and around the 312-mile Savannah River, from the headwaters in North Carolina to the port in Savannah, Georgia.

"It started in 2007 with a group of faculty who came together to discuss the complex issues of managing water resources," says Gene Eidson, director of Clemson's Institute of Applied Ecology. "How do you manage a river? What issues have to be addressed from an ecosystems standpoint? We needed a better strategy if we were going to stretch water resources to meet human needs and the needs of animals and plants in and around the river, and for that, we needed better data."

The Intelligent River will monitor everything, including stormwater, that could harm a river, according to Clemson University professor Gene Eidson. (Photo: Brad Nettles/Post and Courier)

Eidson and other ecologists have been using sensors to monitor rivers for years, but these require scientists to visit the sites and download the data. The data can be outdated, and when a sensor is damaged or drifts out of position, data can be lost or corrupted. "You can't manage a river using data that's weeks to months old, because the river is constantly changing," Eidson says. "We needed real-time data acquisition on a large, landscape scale. So, we're creating the world's first automated river."

To achieve such an ambitious goal, Eidson knew he'd need help. He held a symposium on campus of faculty, government officials and others interested in the health of the Savannah River, which runs through the Clemson campus. Then, he put together a team that includes hardware developers, software engineers, river ecologists, visual effects scientists, forestry and natural resource scientists, information technologists and applied economists.

The researchers developed MoteStacks, and have tested them in buoys anchored to the river bottom. (Photo: Clemson University)
Jason Hallstrom, an associate professor in the Clemson School of Computing and an IDEaS professor, directs technology development for the Intelligent River. Hallstrom had been working with wireless sensors, sometimes called motes, which form mesh networks (see Product Developments on page 29). The technology was a good fit for a project that requires deployment of many sensors across a large area in a highly efficient, low-cost network that could feed data on a real-time basis.

But commercially available motes wouldn't work in this context. Most use ZigBee, which works well in situations in which sensors are clustered closely together, but not in which they are spread far apart. So Hallstrom and his team designed wireless devices—dubbed MoteStacks—that have standard interfaces. They can accommodate many types of sensors, and researchers can plug in a variety of circuit boards, depending on whether they need to use ZigBee, Wi-Fi (good in urban areas), cellular or satellite communications to send data back to Clemson's high-performance computing system. Other team members developed middleware, a data repository and visualization software to enable users to tap into the data in real time.
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