Eldon Hazlet

Eldon Hazlet State Recreation Area encompasses 3,000 acres on the western shore of Carlyle Lake in Clinton County, Illinois, providing access to the state's largest man-made lake. The recreation area is named for Carlyle attorney Eldon Hazlet, the first president of the Kaskaskia Valley Association, who organized and promoted construction of Carlyle Lake along with Lake Shelbyville and other improvements. The site is leased by the Illinois Department of Natural Resources from the U.S. Army Corps of Engineers, which built the 26,000-acre lake on the Kaskaskia River impoundment. Located three miles north of Carlyle and two miles east of Illinois Route 127, Eldon Hazlet attracts more than 800,000 visitors annually who come to camp, boat, fish, hunt, picnic, bird watch, and hike more than nine miles of trails. The recreation area has hosted regional and national sailing regattas, including the sailing competition of the 1994 U.S. Olympic Festival games.

The habitats at Eldon Hazlet State Recreation Area support diverse wildlife populations, with the lake serving as a critical stopover for migratory birds. More than 200,000 waterfowl stop at Carlyle Lake during their migratory travels north and south each year, creating spectacular viewing opportunities from the recreation area. Species commonly observed include herons, egrets, and other wading birds; shorebirds along the lake margins; numerous songbird species; and raptors including hawks and eagles. Resident wildlife includes white-tailed deer, red foxes, raccoons, squirrels, and woodchucks. Quail and doves are present in suitable habitat, while bluebirds and other cavity-nesting songbirds utilize nesting boxes placed throughout the area. The combination of open water, shoreline, grassland, and woodland habitats creates the diversity necessary to support this remarkable wildlife assemblage.

The plant communities at Eldon Hazlet State Recreation Area encompass woodland, grassland, and shoreline vegetation adapted to the lake environment. Upland forests contain oaks, hickories, and other hardwood species characteristic of central Illinois. The wooded areas provide shade for camping and picnic facilities while supporting forest-dwelling wildlife. Grassland areas feature native grasses and wildflowers that provide habitat for ground-nesting birds and small mammals. The lake shoreline supports vegetation tolerant of fluctuating water levels, providing cover and food resources for waterfowl and shorebirds. Managed plantings enhance wildlife habitat and provide aesthetic appeal. The vegetation mosaic creates diverse foraging and nesting opportunities that contribute to the area's value for migratory and resident birds.

Eldon Hazlet State Recreation Area occupies terrain fundamentally shaped by the creation of Carlyle Lake, one of Illinois' three largest reservoir and recreational complexes. The underlying landscape was molded by glacial activity during the Pleistocene epoch, with glacial till deposits creating the gently rolling topography characteristic of the region. The Kaskaskia River drained this landscape for thousands of years, carving its valley through the glacial deposits. The U.S. Army Corps of Engineers constructed the dam that impounds the 26,000-acre lake, flooding the former river valley and transforming the local geography. The lake's 26,000 acres and extensive shoreline dwarf other water bodies in Illinois. Fluctuating lake levels create a dynamic shoreline environment that influences both vegetation communities and wildlife use patterns throughout the seasons.

Eldon Hazlet State Recreation Area experiences a humid continental climate typical of south-central Illinois. Summers bring warm to hot conditions with temperatures frequently reaching the upper 80s to low 90s Fahrenheit, accompanied by humidity that can feel oppressive. The large expanse of Carlyle Lake creates local weather effects including afternoon breezes and potential for rapid weather changes that affect boating safety. Thunderstorms are common during spring and summer, occasionally producing severe weather. Winters are cold with temperatures regularly dropping below freezing and variable snowfall. The lake may partially freeze during extended cold periods. Spring and fall bring moderate temperatures ideal for outdoor recreation and wildlife observation. The fall waterfowl migration, peaking as temperatures cool, draws birdwatchers seeking the spectacular concentrations of migratory birds.

The Kaskaskia River valley has supported human communities for thousands of years. Native American peoples utilized the river and its resources long before European contact. French exploration and settlement brought European influence to the region in the 17th and 18th centuries, with the Kaskaskia River serving as a transportation corridor. American settlement transformed the landscape during the 19th century as forests were cleared for agriculture. The Kaskaskia River's periodic flooding caused significant damage to agricultural lands and communities, prompting calls for flood control. Eldon Hazlet, a Carlyle attorney, became a leading advocate for reservoir construction. As the first president of the Kaskaskia Valley Association, he organized the effort that led to authorization of both Carlyle Lake and Lake Shelbyville, fundamentally reshaping the region's relationship with water.

The creation of Carlyle Lake established the foundation for Eldon Hazlet State Recreation Area. The U.S. Army Corps of Engineers constructed the dam and manages the 26,000-acre lake, while the Illinois Department of Natural Resources leases and manages the 3,000-acre recreation area on the western shore. The site was named to honor Eldon Hazlet, whose advocacy made the reservoir complex possible. Development of recreational facilities transformed a flood-prone river valley into a premier destination attracting more than 800,000 visitors annually. The recreation area gained national recognition when it hosted the sailing competition of the 1994 U.S. Olympic Festival games, demonstrating the quality of its facilities and the suitability of Carlyle Lake for competitive sailing. Regional and national regattas continue to be held here, organized by the Carlyle Sailing Association.

Eldon Hazlet State Recreation Area offers more than nine miles of hiking trails traversing varied terrain. The trail system provides opportunities for wildlife observation, with strategic locations offering views of the lake where waterfowl and shorebirds congregate. Carlyle Lake itself serves as the primary attraction, with three free public boat ramps providing access to 26,000 acres of open water. Fishing is excellent for a variety of species, and the lake is renowned for sailing. Recreational amenities include playground equipment, basketball and sand volleyball courts, horseshoe pits, and an amphitheater for programs and events. Birdwatching is particularly rewarding during spring and fall migrations when over 200,000 waterfowl utilize the lake. The Hazlet Cottages offer spectacular views overlooking the lake.

Eldon Hazlet State Recreation Area offers extensive camping and lodging facilities. The Illini Campground provides 328 Class A campsites with 30 and 50 amp electrical hookups, plus 36 Class C walk-in tent camping sites and two rustic rent-a-cabins. Three shower buildings and numerous privy toilets serve the campground. Twenty Hazlet Cottages overlooking the lake are available for rent, offering spectacular water views. Recreational amenities include playgrounds, sports courts, and an amphitheater. Three boat ramps provide free public access to the lake. The recreation area is located three miles north of Carlyle and two miles east of Illinois Route 127 in Clinton County. The town of Carlyle provides full services for visitors. The recreation area's proximity to St. Louis makes it accessible for weekend getaways from the metropolitan area.

Conservation at Eldon Hazlet State Recreation Area emphasizes protection of the habitats that support the remarkable concentrations of migratory waterfowl. Carlyle Lake serves as a critical stopover along the Mississippi Flyway, with over 200,000 waterfowl utilizing the lake during spring and fall migrations. Management of shoreline vegetation and adjacent habitats aims to maintain the food resources and cover these migrants require. Hunting regulations balance recreational opportunity with sustainable wildlife populations. Water quality monitoring helps maintain conditions suitable for both wildlife and human recreation. The recreation area demonstrates how flood control infrastructure can provide multiple benefits, protecting downstream communities from flooding while creating habitat and recreational opportunities. Educational programming helps visitors understand the ecological significance of the lake ecosystem and the importance of responsible recreation.