* Cuyuni River Basin: This basin is also located in the northwest of Guyana and is known for its rich gold deposits.
* Essequibo River Basin: The Essequibo River Basin is located in the northwest of Guyana and is another important gold-producing region.
* Mazaruni River Basin: This basin is located in the centre of Guyana and is also known for its significant gold deposits.
* Potaro River Basin: The Potaro River Basin is located in the southwest of Guyana and is another important gold-producing region.