Fifty two acres of the San Diego River Park is known as the Mission Valley Preserve, and it is under the supervision of the Park & Recreation Department's Tri-Canyon Park Rangers.
With over 4,000 acres of open space, this preserve is home to many rare and endangered plant and animal species. Visitors using the 37 miles of multi-use trails have the opportunity to pass through 14 different habitat types and view a waterfall.
Black Mountain Open Space park is comprised of 2,352 acres, has trails for hiking, biking and equestrian use and has over 80 species of birds. The centerpiece of the park is the 1,554 foot summit of Black Mountain, which provides 360-degree views of the area.
San Pasqual and Clevenger Canyon Open Space Park offers great hiking and bird watching including a challenging 1,755-foot summit.
Otay Valley Regional Park (OVRP) is a multi-jurisdictional planning effort by the County of San Diego and the cities of San Diego and Chula Vista.