Río Cañas (Caguas, Puerto Rico)

Puente No. 6, in Caguas, Puerto Rico is a historic bridge which was built in 1856. It was listed on the National Register of Historic Places in 2009 and is located at Puerto Rico Highway 798, Km. 1.0 in Río Cañas barrio.It has also been known as Bridge #6, as Ponton La Concepcion, and as (La) Concepcion Bridge. It spans the Cañas River. It is a brick barrel vault bridge. It was built as part of the Río Piedras-Caguas highway program.The image at right is from Our Islands and their People by Jose de Olivares, published in 1899 after the Spanish-American War.

San Antonio is a barrio in the municipality of Caguas, Puerto Rico. Its population in 2010 was 2,224.

Jaguas is a barrio in the municipality of Gurabo, Puerto Rico. Its population in 2010 was 2,083.

Río Cañas is a barrio in the municipality of Caguas, Puerto Rico. Its population in 2010 was 9,683.

Altos de San Luis, also known as Monte Altos de San Luis (Spanish for San Luis heights), is an 886 feet (270 m) high and two-mile-long prominent mountain ridge located on the northern edge of the Caguas Valley, in barrio (district) Bairoa of Caguas, Puerto Rico. The ridge is bordered by the Loíza River to the north and the east, and it forms part of a larger system of mountain ridges that extends from the southwestern end of the Sierra de Luquillo in Gurabo to the northeastern end of the Cordillera Central in Aguas Buenas. Other mountains and hills along this system include the Altos de La Mesa and Cerro La Marquesa. These ridges are shaped by the Great Northern Puerto Rico fault zone (GNPRfz), an active fault zone which crosses the island diagonally from southeast to northwest.The forested area on the mountain ridge, known as Finca Longo, is protected by the municipality of Caguas as a critical habitat of the Puerto Rican plain pigeon (Patagioenas inornata wetmorei), locally known as the paloma sabanera, which until the 1970s was on the brink of extinction. This pigeon has been observed to nest, roost and feed on the habitat created by the secondary forest found here.

The Gurabo River (Spanish: Río Gurabo) is a river and tributary of the Loíza River in Puerto Rico. In 2018, the U.S. Army Corps of Engineers announced work would be done on the river, which runs through several municipalities including Gurabo, Juncos, and Las Piedras.In 2018, homes in Juncos were on the verge of collapse as a result of erosion and landslides caused by a change in the rivers trajectory.

The Bairoa River (Spanish: Río Bairoa) is a river of Caguas, Puerto Rico.

Bairoa is a barrio or district in the municipality of Caguas, Puerto Rico. Its population in 2020 was 17,791. There are close to 60 sectors in Bairoa.

The Cagüitas River (Spanish: Río Cagüitas) is a river of Caguas and Aguas Buenas, Puerto Rico.

Quebrada Infierno is a barrio in the municipality of Gurabo, Puerto Rico. Its population in 2010 was 773.

Carraízo Dam is a concrete gravity dam located in the municipality of Trujillo Alto, Puerto Rico within the flow of the Río Grande de Loíza. Its construction was completed in 1953. Carraízo Dam impounds Loíza Lake which serves as Puerto Rico's main water reservoir.

Loíza Lake, or Lago Loíza, is a reservoir located in the municipality of Trujillo Alto, Puerto Rico. It was formed by construction of the Carraízo Dam on the Río Grande de Loíza. It serves as the main water supply source of the San Juan metropolitan area.