Mile Square Regional Park

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Last Updated: December 5, 2025

Mile Square Regional Park is a popular destination located in Fountain Valley, California.


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Summary

The park covers an area of over 600 acres and offers a variety of activities for visitors to enjoy.

One of the main reasons to visit Mile Square Regional Park is for its stunning natural beauty. The park features lush greenery, lakes, and wildlife, making it an ideal spot for a picnic or a leisurely stroll.

There are also several specific points of interest within the park that are worth exploring. The park contains an 18-hole golf course, several sports fields, a nature center, and a fishing lake. Visitors can also enjoy hiking, biking, and horseback riding on the park's numerous trails.

Interesting facts about Mile Square Regional Park include its history as a former military training ground. The park was once used as a site for soldiers to practice firing anti-aircraft guns during World War II.

The best time of year to visit Mile Square Regional Park is during the spring and fall months when the weather is mild and comfortable. However, the park is open year-round, and visitors can enjoy activities such as fishing and hiking throughout the year.

Overall, Mile Square Regional Park is a must-visit destination for anyone seeking a peaceful escape to nature in the heart of California. Its natural beauty, outdoor activities, and historical significance make it a unique and interesting destination for all ages.

       

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Park & Land Designation Reference

National Park
Large protected natural areas managed by the federal government to preserve significant landscapes, ecosystems, and cultural resources; recreation is allowed but conservation is the priority.
State Park
Public natural or recreational areas managed by a state government, typically smaller than national parks and focused on regional natural features, recreation, and education.
Local Park
Community-level parks managed by cities or counties, emphasizing recreation, playgrounds, sports, and green space close to populated areas.
Wilderness Area
The highest level of land protection in the U.S.; designated areas where nature is left essentially untouched, with no roads, structures, or motorized access permitted.
National Recreation Area
Areas set aside primarily for outdoor recreation (boating, hiking, fishing), often around reservoirs, rivers, or scenic landscapes; may allow more development.
National Conservation Area (BLM)
BLM-managed areas with special ecological, cultural, or scientific value; more protection than typical BLM land but less strict than Wilderness Areas.
State Forest
State-managed forests focused on habitat, watershed, recreation, and sustainable timber harvest.
National Forest
Federally managed lands focused on multiple use—recreation, wildlife habitat, watershed protection, and resource extraction (like timber)—unlike the stricter protections of national parks.
Wilderness
A protected area set aside to conserve specific resources—such as wildlife, habitats, or scientific features—with regulations varying widely depending on the managing agency and purpose.
Bureau of Land Management (BLM) Land
Vast federal lands managed for mixed use—recreation, grazing, mining, conservation—with fewer restrictions than national parks or forests.
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