Isabella Dam is an embankment dam located in the Kern River Valley, about halfway down the Kern River course, between the towns of Kernville and Lake Isabella in Kern County, California. Isabella Dam serves agricultural, hydroelectric, and flood control uses. Lake Isabella also serves as a recreational and tourist attraction. Water sports, fishing, …Isabella Dam is an embankment dam located in the Kern River Valley, about halfway down the Kern River course, between the towns of Kernville and Lake Isabella in Kern County, California. Isabella Dam serves agricultural, hydroelectric, and flood control uses. Lake Isabella also serves as a recreational and tourist attraction. Water sports, fishing, boating, camping, and hiking are common throughout the area, as well as the Sequoia National Forest.