North Carolina, USA, 24 May 2007: RTI International has developed new tools called NHDPlus that provide enhanced capabilities for hydrologic mapping, allowing researchers to identify precise locations for monitoring stations and accurately predict upstream and downstream pollution effects.
The NHDPlus is built on earlier releases of the National Hydrography Dataset (NHD), which in turn builds on an earlier generation of Reach Files created by the U.S. Environmental Protection Agency. RTI has been involved in providing support for the development of basic hydrography network products. RTI’s new services offer a suite of spatial tools offering a collection of Web services, ESRI ADF and ArcMap interfaces, Oracle, Oracle Spatial, and Oracle GeoRaster procedures for analyzing and creating hydrologic maps.
“These new features provide the means for a variety of analyses that were not possible before,” said William Cooter, Ph.D., Research Environmental Scientist at RTI who led the team that created the tools. “For instance, using these new tools, a user can determine the downstream population affected by an upstream pollutant release and the time it will take the pollutants to travel to that location.”
It is said that the new tool allows researchers to more precisely identify appropriate locations in the National Hydrography Dataset for facilities such as wastewater treatment plants and monitoring stations. The system also provides innovative Oracle Spatial services that perform upstream-downstream navigation to create watershed areas of investigation, which allows researchers to manage units such as urban areas, military bases or tribal lands.