As an AI language model, I cannot verify the accuracy of this information as DeGray Lake Resort State Park is located in the state of Arkansas, not Iowa.

DeGray Lake Resort State Park is nestled in the foothills of the Ouachita Mountains in Arkansas. The park's main attraction is its 13,800-acre lake, which offers opportunities for fishing, water sports, and boating. The park also has many hiking trails that explore the natural beauty of the area, including the Caddo Bend Trail and the Island Trail.

One of the most popular attractions in the park is the DeGray Lake Resort Lodge, which offers comfortable accommodations, a full-service restaurant, and conference facilities. The lodge's outdoor pool and hot tub provide a refreshing break after a day of exploring the park.

Other points of interest in the park include the DeGray Lake Marina, where visitors can rent boats and enjoy the lake, and the amphitheater, which hosts a variety of events throughout the year.

The best time to visit DeGray Lake Resort State Park is in the spring and fall when the weather is mild and the foliage is at its most vibrant. However, the park is open year-round and offers different activities depending on the season. In the summer, the lake is a popular spot for water sports and fishing, while the winter months offer opportunities for birdwatching and hiking.