 The Cumberland River flows through the center of the county from north to south, fed by the Obey River which flows through the city of Celina from its impoundment at Dale Hollow Lake, inundates much of the eastern part of the county.As of the census of 2000, there were 7,976 people, 3,379 households, and 2,331 families residing in the county.The 2005 Census Estimate placed the population at 7,992 .