Quebrada Infierno, Gurabo, Puerto Rico

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

Quebrada Negrito is a barrio in the municipality of Trujillo Alto, Puerto Rico. Its population in 2010 was 5,610. The barrio was created in 1899.

La Gloria is a barrio in the municipality of Trujillo Alto, Puerto Rico. Its population in 2010 was 4,665.

Celada is a barrio in the municipality of Gurabo, Puerto Rico. Its population in 2010 was 3,160.

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.

Masa is a barrio in the municipality of Gurabo, Puerto Rico. Its population in 2010 was 1,522.

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.

The Río Cañas (Caguas, Puerto Rico) is a river of Puerto Rico.

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

Quebrada Grande is a barrio in the municipality of Trujillo Alto, Puerto Rico. Its population in 2010 was 4,376.

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