The park's central lake is man-made and serves a dual function as a decorative water feature and a storm water retention basin.
The park name originates from the regional intersection of the cities of Placentia, Brea, and Fullerton.
It is one of the few urban parks in the region that allows catch-and-release fishing for various freshwater species.
The park was developed in the 1970s as part of an effort to expand regional green space following rapid local suburban growth.
Tri-City Park is a 40-acre municipal park located in Placentia, Orange County, featuring a prominent central lake that serves as the site's focal point. Managed by the Orange County Parks department, the site provides extensive paved trails suitable for walking and jogging. The grounds include multiple reservable picnic shelters equipped with barbecue facilities. Fishing is permitted in the lake, subject to state regulations and local ordinances. The park contains open turf areas used for informal recreation and organized sports activities. Extensive mature tree coverage provides significant shade throughout the north and central sections of the property. The park serves as a community hub for Placentia residents and regional visitors seeking outdoor activity. It is situated on land formerly utilized by the city for drainage and flood control purposes.
The pedestrian bridge spanning the central lake provides a clear vista of the water with the tree line in the background.
Bring a folding chair if you plan to fish, as seating directly at the water's edge is limited.
Check local weather forecasts before visiting, as there is limited interior shelter during heavy rain.
The lake is popular with local waterfowl; maintain distance to avoid aggressive bird behavior near nesting sites.
Feeding the ducks and geese, as this is discouraged by park management to maintain water quality and prevent aggressive animal behavior.
Leash laws for pets are strictly enforced; dogs must remain on a leash at all times.
