641. Rio Oco (3.47N, 8.48E) , Stream 642. Rio Ocooco (3.47N, 8.52E) , Stream 643. Rio Ocuamocos (1.1N, 10.12E) , Stream 644. Rio Olabaita (3.25N, 8.6E) , Stream 645. Rio Ole (3.25N, 8.48E) Bioko Sur, Stream 646. Rio Olende (1.93N, 9.82E) , Stream 647. Rio Omba (3.4N, 8.43E) , Stream 648. Rio Omebiche (3.35N, 8.77E) , Stream 649. Rio Ongamnsoc (1.37N, 9.98E) , Stream 650. Rio Ongongondye (1.33N, 9.57E) , Stream 651. Rio Ope (3.62N, 8.62E) , Stream 652. Rio Opi (3.62N, 8.62E) , Stream 653. Rio Osa (3.25N, 8.57E) , Stream 654. Rio Osoanengo (1.27N, 9.57E) , Stream 655. Rio Ote (3.52N, 8.83E) , Stream 656. Rio Otonde (1.93N, 9.82E) , Stream 657. Rio Otondo (1.93N, 9.82E) , Stream 658. Rio Pade (3.57N, 8.62E) , Stream 659. Rio Pela (3.7N, 8.93E) , Stream 660. Rio Poto (3.23N, 8.55E) , Stream 661. Rio Pume (1.12N, 9.42E) , Stream 662. Rio Puputu (3.57N, 8.62E) , Stream 663. Rio Quie (2.3N, 11.38E) , Stream 664. Rio Ria-Ria (3.53N, 8.87E) , Stream 665. Rio Rote (3.67N, 8.93E) , Stream 666. Rio Ruma (3.38N, 8.77E) , Stream 667. Rio Rupe (3.58N, 8.62E) , Stream 668. Rio Rute (3.25N, 8.57E) , Stream 669. Rio Sabe (3.45N, 8.63E) , Stream 670. Rio Sabo (3.4N, 8.78E) , Stream 671. Rio Sacriba (3.73N, 8.7E) , Stream 672. Rio Saguomo (2.08N, 9.85E) , Stream 673. Rio Sahu (3.6N, 8.9E) , Stream 674. Rio Sambaka (3.75N, 8.75E) , Stream 675. Rio Sampaca (3.75N, 8.75E) , Stream 676. Rio Sampaka (3.75N, 8.75E) , Stream 677. Rio San Benito (1.6N, 9.62E) , Stream 678. Rio San Nicolas (3.75N, 8.78E) , Stream 679. Rio Sapo (3.67N, 8.93E) , Stream 680. Rio Sari (3.42N, 8.43E) , Stream | 681. Rio Senye (1.18N, 10.17E) , Stream 682. Rio Setaseta (3.72N, 8.92E) , Stream 683. Rio Siesibe (3.27N, 8.72E) , Stream 684. Rio Siloco (3.38N, 8.73E) , Stream 685. Rio Sisimp (1.33N, 10.27E) , Stream 686. Rio Sobo (1.45N, 10.35E) , Stream 687. Rio Socameeba (3.25N, 8.58E) , Stream 688. Rio Sochi (3.47N, 8.73E) , Stream 689. Rio Socopete (3.75N, 8.87E) , Stream 690. Rio Socopetete (3.75N, 8.87E) , Stream 691. Rio Soo (1.15N, 10.2E) , Stream 692. Rio Sopo (3.67N, 8.93E) , Stream 693. Rio Sucoloco (3.23N, 8.7E) , Stream 694. Rio Suhu (3.6N, 8.9E) , Stream 695. Rio Sunu (3.47N, 8.55E) , Stream 696. Rio Tapechique (3.57N, 8.88E) , Stream 697. Rio Tega (1.2N, 10.17E) , Stream 698. Rio Teo (3.35N, 8.7E) , Stream 699. Rio Tiburones (3.5N, 8.58E) , Stream 700. Rio Tiburones (3.75N, 8.68E) , Stream 701. Rio Tiburones (3.23N, 8.62E) , Stream 702. Rio Timbabe (3.75N, 8.77E) , Stream 703. Rio To (3.47N, 8.57E) , Stream 704. Rio Toa (3.62N, 8.63E) , Stream 705. Rio Toaca (3.63N, 8.63E) , Stream 706. Rio Toche (1.1N, 9.88E) , Stream 707. Rio Toco (3.67N, 8.93E) , Stream 708. Rio Togecha (3.75N, 8.82E) , Stream 709. Rio Toho (3.55N, 8.87E) , Stream 710. Rio Toito (3.47N, 8.83E) , Stream 711. Rio Toko (3.67N, 8.93E) , Stream 712. Rio Tole (3.67N, 8.93E) , Stream 713. Rio Toleke (3.67N, 8.93E) , Stream 714. Rio Tomono (3.42N, 8.43E) , Stream 715. Rio Tope (3.43N, 8.45E) , Stream 716. Rio Topee (3.57N, 8.6E) , Stream 717. Rio Topepa (3.6N, 8.63E) , Stream 718. Rio Tu (3.47N, 8.57E) , Stream 719. Rio Tudela (3.25N, 8.48E) Bioko Sur, Stream 720. Rio Turu (1.3N, 10.75E) , Stream |