Augusta is the capital of the U.S. state of Maine, county seat of Kennebec County, and center of population for Maine. The city's population was 18,560 at the 2000 census, making it the third-smallest state capital after Montpelier, Vermont and Pierre, South Dakota. According to the United States Census Bureau, the city has a total area of 58.3square miles (150.9km), of which, 55.4square miles (143.4km) of it is land and 2.9square miles (7.5km) of it (4.98%) is water. Augusta is drained by Bond's Brook, Woromontogus Stream and the Kennebec River. It is home to the University of Maine at Augusta.