• Concentrations of nitrogen and phosphorus were within ranges observed during previous years; however, Falls Lake at U.S. Interstate 85 had elevated levels of nitrate plus nitrite and total phosphorus relative to other sites. • Five lakes had chlorophyll a concentrations in excess of 40 micrograms per liter at least once during 2008, including Little River Reservoir, Falls Lake, Lake Benson, University Lake, and Jordan Lake.

Box plots showing the range, median, and quartile statistical values for (A) pH, (B) specific conductance, and (C) dissolved oxygen for wells and the tributary site during periodic sampling events at the Lake Wheeler Road research station, North Carolina ..

The calibrated and future scenario models have the capability to run on a daily time step and simulate streamflow and irrigation demand for thousands of small subbasins in the Cape Fear and Pee Dee River Basins. The models and underlying datasets enable future analyses for large and small areas within the basins.

Surface-water supplies are important sources of drinking water for residents in the Triangle area of North Carolina, which is located within the upper Cape Fear and Neuse River Basins. Since 1988, the U.S. Geological Survey and a consortium of local governments have tracked water-quality conditions and trends in several of the area's water-supply lakes and streams. This report summarizes data collected through this cooperative effort, known as the Triangle Area

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