Lyman Lake

Lyman Lake State Park covers 1,180 acres in the White Mountains region of northeastern Arizona, centered around Lyman Lake, a 1,500-acre reservoir on the Little Colorado River near the town of St. Johns. At an elevation of approximately 6,000 feet, the park provides a cool-weather water recreation alternative to Arizona's scorching lower desert parks. The park is notable for its combination of lake recreation, petroglyph viewing, and proximity to the Petrified Forest and White Mountains regions, offering a diverse experience in one of Arizona's less-visited but scenically rewarding areas.

The park's high-elevation grassland and lake habitats support a mix of Great Plains and Southwestern wildlife. Pronghorn antelope graze on the surrounding plains. Mule deer visit the lake shore. The lake is stocked with largemouth bass, channel catfish, crappie, and walleye. Great blue herons and various waterfowl use the lake. Golden eagles and various hawk species hunt over the grasslands. Coyotes and jackrabbits are common. The park maintains a small herd of domestic bison visible from a viewing area. Prairie dogs inhabit colonies on the surrounding grasslands.

The park sits in a transition zone between the Colorado Plateau grasslands and the ponderosa pine forests of the White Mountains. Short to mid-grass prairie with blue grama, western wheatgrass, and galleta grass covers the open areas. Juniper and scattered ponderosa pine dot the higher elevations. Rabbitbrush, saltbush, and sagebrush grow on drier sites. Cottonwood and willow line the Little Colorado River and lake margins. The grassland represents the high-elevation prairie ecosystem of the Colorado Plateau.

Lyman Lake sits on the Colorado Plateau at the edge of the volcanic White Mountains region. The surrounding landscape includes colorful sedimentary formations related to the Chinle Formation (the same formation that preserves the Petrified Forest to the north). Ancient petroglyphs on basalt boulders in the park were carved by ancestral Puebloan peoples. The lake was created by a small dam on the Little Colorado River. The area's geology includes volcanic basalt flows from the White Mountains volcanic field overlying Triassic and Permian sedimentary rocks.

The park's 6,000-foot elevation creates a semi-arid continental climate with warm summers and cold winters. Summer temperatures reach the 80s to low 90s Fahrenheit - much cooler than lower Arizona. Winters are cold with freezing temperatures and moderate snowfall. Annual precipitation averages about 10 inches, mostly from summer monsoon storms. The elevation provides relief from Arizona's extreme summer heat, making the park a popular warm-weather escape. Wind can be strong, especially in spring.

The area has been inhabited for thousands of years by ancestral Puebloan peoples who left petroglyphs on basalt boulders now within the park. These rock art sites document cultural activity spanning centuries. The area was later home to Navajo and Apache peoples. Mormon settlers founded St. Johns and nearby communities in the 1870s and 1880s, developing agriculture and ranching in the Little Colorado River valley. The dam that created Lyman Lake was built for irrigation in the early 1900s.

Lyman Lake State Park was established in 1963 around the existing irrigation reservoir to provide recreation in northeastern Arizona. The park was developed with campground and boat launch facilities. The petroglyph sites within the park added a cultural heritage dimension to the recreation-focused park. The park has operated as one of Arizona's more remote and less-visited state parks, offering a quieter alternative to the more popular parks in the state.

The lake provides boating, waterskiing, swimming, and fishing. Unlike many Arizona lakes, there are no horsepower restrictions, making it popular for waterskiing and wakeboarding. A petroglyph trail leads to boulder sites with ancient rock art. Ranger-guided petroglyph tours are offered seasonally. The park's bison viewing area allows visitors to see a small captive herd. Hiking trails explore the grassland and lakeshore. The park serves as a base for visiting the nearby Petrified Forest National Park, Lyman Lake Archaeological District, and the Apache-Sitgreaves National Forest in the White Mountains.

The park offers approximately 70 campsites, some with electric hookups. A boat ramp and courtesy dock provide lake access. Restrooms with showers serve the campground. A small store sells basic supplies and bait. The park is located on Highway 180/191, approximately 11 miles south of St. Johns. St. Johns provides basic services. Show Low (50 miles south) offers more extensive lodging and dining. Phoenix is approximately 225 miles to the southwest. An entrance fee applies.

Water management in the Little Colorado River basin affects lake levels, which can fluctuate significantly depending on precipitation and upstream irrigation demands. The petroglyph sites require protection from vandalism and inadvertent visitor damage. The grassland ecosystem surrounding the lake faces pressures from invasive species and climate change. The park's bison exhibit provides educational opportunities about Great Plains ecology. The park participates in water quality monitoring for the lake, addressing potential impacts from agricultural runoff in the watershed.