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Tri-City Regional Park

Tri-City Regional Park is a 40-acre protected area located in the City of Placentia, on the border of the City of Fullerton. Within the park is a lake and three picnic shelters that you may reserve for special events. Activities include bicycling and walking the paved trails, model sail boating, fishing, and play areas.

Tri-City Regional Park also serves as a wildlife sanctuary for migratory waterfowl and it’s a popular location for bird watching.

Tri City Regional Park

The lakes and surrounding land at Tri-City Regional Park were once part of the Tuffree Reservoir. To meet the needs of the agricultural community, the reservoir was built in 1870 and provided irrigation to local farms.

In the 1950s and 1960s, urban development increased, reducing the city’s agricultural area. The area no longer relied on the reservoir for irrigation and the cities of Brea, Fullerton, and Placentia teamed up to develop Tuffree Reservoir and surrounding land into a public park.

Tri-City Park has been operating as a regional park as part of the Orange County Parks Department since 2013. The main park entrance is on Kraemer Blvd. at Golden Ave. A secondary entrance is on the opposite side of the park at Rolling Hills Drive.

Tri-City Regional Park Details

Address: 2301 Kraemer Blvd., Placentia, CA 92870
Park Hours: Sun – Sat: 7:00 AM – 9:00 PM Spring – Summer; 7:00 AM – 6:00 PM Fall – Winter
Phone: 714-973-3180
Dogs: Permitted on leash
Tri-City Regional Park Map

Things To Do At Tri-City Regional Park


Tri-City Regional Park has an easy walking path. This paved, less than a mile path loops around the lake. It is well kept, and kid and dog friendly. Roller skates and bicycles are permitted on the trails. Skateboards and electric bikes/electric scooters are not permitted on the trails here.

Fitness Equipment

Tri-City Regional Park recently received the addition of fitness equipment, so after you take a walk or jog around the trail, stop here and fit in some additional workout activity.


There is a small playground in the park. Features include a baby bucket swing and regular swings, slides and climbing structures, with a blue recycled rubber surface. This playground is best for toddlers and lower elementary aged children. The playground is located not too far from the restrooms and there is plenty of open space to spread out for a picnic or a game of catch.

Lake for Fishing & Model Boating

Tri-City Regional Park has an 8-acre lake which is popular for waterfowl. Visitors ages 16 and over can fish for catfish and bluegill with a valid California fishing license. No license is required for those under 16. Another great lake activity is launching model radio-controlled sailboats. Swimming and wading are not permitted in the lake.

Fish Stocking Schedule


There are two restrooms at Tri-City Regional Park. They were refurbished in 2021. One restroom is located near parking lot 1 by the main entrance, and the second restroom is near the secondary entrance by parking lot 3.

Picnic Shelters

There are three covered picnic shelters that can be reserved in advance. Each picnic shelter includes picnic tables and barbecues. Barbecues are charcoal grills. The shelters can accommodate parties up to 50 people. All three shelters are located in the space between parking lot 1 and parking lot 5 near the main park entrance and are within walking distance to the restroom and the playground.

Additional picnic tables and benches are located throughout the park.

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Kaitlin Musser
Kaitlin is a former ballerina who now travels around the country in an 18-foot converted school bus. Her and her tall-one husband have welcomed 34 sweet children into their home the past eleven years. Although they wouldn’t be a forever home for all of them they were able to adopt their daughter buckets and are legal guardians of their son monkey.