
The San Diego River is a river in San Diego County, California. It originates in the Cuyamaca Mountains northwest of the town of Julian, then flows to the southwest until it reaches the El Capitan Reservoir, the largest reservoir in the river's watershed at 112,800 acre feet (139,100,000 m3). Below El Capitan Dam, the river runs west through Santee and San Diego. While passing through Tierrasanta it goes through Mission Trails Regional Park, one of the largest urban parks in America. The river discharges into the Pacific Ocean near the entrance to Mission Bay, forming an estuary.
Adobe Falls is a seasonal waterfall on a tributary of the San Diego River. San Diego State University owns the land and it is currently posted with No Trespassing signs. There is no legal public access to this location. Due to high trespass traffic and destruction of the natural environment fences have been put in place and it is being regularly patrolled. Remedies are being explored for removing the graffiti in a manner that will not pollute the environment and to remove the trash that has accumulated there.

El Capitan Dam is an embankment dam on the San Diego River in southern California. The dam forms the 112,800-acre-foot (139,100,000 m3) El Capitan Reservoir and serves mainly to supply water to the city of San Diego as well as providing flood control. The dam is connected to the San Diego municipal water system via the El Capitan Pipeline, which extends approximately 30 miles (48 km) to the city. It is the second largest storage facility in San Diego's water supply system, after San Vicente Dam.

El Capitan Reservoir is a reservoir in central San Diego County, California. It is in the Cuyamaca Mountains, about 30 miles (48 km) northeast of the city of San Diego and two miles northwest of the town of Alpine.

Lake Murray is a reservoir in San Diego, California, operated by the City of San Diego's Public Utilities Department. It is located within Mission Trails Regional Park. When full, the reservoir covers 171.1 acres (69.2 ha), has a maximum water depth of 95 feet (29 m), and a shoreline of 3.2 miles (5.1 km). The asphalt-paved service road lining roughly two-thirds of the lake's perimeter is a popular recreation site for the Navajo community. It lies south of Cowles Mountain and is an important reporting point for aircraft inbound to land at Montgomery Field Airport.

Mission Bay is a human-made saltwater bay located south of the Pacific Beach community of San Diego, California created from approximately 2,000 acres of historical wetland, marsh, and saltwater bay habitat. The bay is part of the recreational Mission Bay Park, the largest man-made aquatic park in the country, consisting of 4,235 acres (17.14 km2), approximately 46% land and 54% water. The combined area makes Mission Bay Park the ninth largest municipally-owned park in the United States.

Mission Beach is a community built on a sandbar between the Pacific Ocean and Mission Bay. It is part of the city of San Diego, California.

Mission Basilica San Diego de Alcalá was the first Franciscan mission in The Californias, a province of New Spain. Located in present-day San Diego, California, it was founded on July 16, 1769, by Spanish friar Junípero Serra in an area long inhabited by the Kumeyaay people. The mission and the surrounding area were named for the Catholic Didacus of Alcalá, a Spaniard more commonly known as San Diego. The mission was the site of the first Christian burial in Alta California. The original mission burned in 1775 during an uprising by local natives San Diego is also generally regarded as the site of the region's first public execution, in 1778. Father Luis Jayme, California's first Christian martyr who was among those killed during the 1775 uprising against the mission, lies entombed beneath the chancel floor. The current church, built in the early 19th century, is the fifth to stand on this location. The mission site is a National Historic Landmark.
Mission Trails Regional Park is a 7,220-acre (29.2 km2) open space preserve within the city of San Diego, California, established in 1974. It is the sixth-largest municipally owned park in the United States, and the largest in California.

Mission Valley is a wide river valley trending east-west in San Diego, California, United States, through which the San Diego River flows to the Pacific Ocean. For planning purposes the city of San Diego divides it into two neighborhoods: Mission Valley East and Mission Valley West.

Ocean Beach is a beachfront neighborhood of San Diego, California.
The Old Mission Dam is a historic water impoundment structure in Mission Trails Regional Park in San Diego, California. It was built about 1803 to impound the San Diego River to provide water for irrigation of the fields associated with the Mission San Diego de Alcalá, the first Spanish mission in what is now California. It was the first major colonial-era irrigation project on the Pacific coast of the United States. The surviving remnant of the dam was designated a National Historic Landmark in 1963.

Point Loma Heights is a neighborhood in Point Loma, San Diego, California. It is bounded by Froude Street on the west, Point Loma Avenue and Chatsworth Boulevard on the south, Nimitz Boulevard on the east and Midway Drive and the San Diego River on the north. Neighboring communities are Ocean Beach to the west, Sunset Cliffs and Roseville-Fleetridge to the south, Loma Portal to the east, and Midway and Mission Bay Park to the north.