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Ocherainos/Ochosbanes/Ochthomanes (river) — by C. Foss — last modified Oct 27, 2017 05:20 PM

An ancient place, cited: BAtlas 86 F2 Ocherainos/Ochosbanes/Ochthomanes fl.

Ochos? (river) — by St J. Simpson — last modified Aug 16, 2021 10:24 AM

An ancient place, cited: BAtlas 98 E2 Ochos? fl.

Oescus (river) — by A.G. Poulter — last modified Mar 17, 2023 01:31 PM

The Oescus river (modern Iskar) is a river of Bulgaria and tributary of the Danube.

Oinoparas (river) — by T. Sinclair — last modified Mar 04, 2024 01:27 PM

An ancient place, cited: BAtlas 67 C4 Oinoparas fl.

Ollius (river) — by M. Pearce — last modified Nov 21, 2024 02:28 PM

The Ollius River (modern Oglio) is a tributary of the Po River in northern Italy.

Olonna (river) — by M. Pearce — last modified Feb 19, 2018 05:24 PM

The Olona river flows through the provinces of Varese, Milan and Pavia and empties into the Lambro meridionale.

Oltis (river) — by H.S. Sivan — last modified Aug 28, 2024 12:25 PM

An ancient place, cited: BAtlas 14 F4 Oltis fl.

Ona — by M. Roaf — last modified Feb 14, 2012 11:27 PM

An ancient place, cited: BAtlas 91 unlocated Ona fl.

Ophis (river) — by T. Sinclair — last modified Feb 21, 2023 08:54 AM

An ancient place, cited: BAtlas 87 F4 Ophis fl.

Or(o)bis (river) — by S. Loseby — last modified Aug 30, 2018 05:21 PM

An ancient place, cited: BAtlas 15 A3 Or(o)bis fl.

Orethus (river) — by R.J.A. Wilson — last modified Jun 12, 2024 09:24 PM

An ancient place, cited: BAtlas 47 C2 Orethus fl.

Orgus (river) — by M. Pearce — last modified Oct 27, 2017 04:24 PM

Orgus fl. (Orco river) is a river of northern Italy and a tributary of the Padus fl. (Po river).

Ornia (river) — by E.W. Haley — last modified Oct 21, 2022 08:09 PM

An ancient place, cited: BAtlas 24 E2 Ornia fl.

Orontes (river) — by T. Sinclair — last modified Oct 05, 2023 04:21 PM

The Orontes River is one of the chief rivers of the Levant.

Orotan (river) — by S.E. Kroll — last modified Aug 30, 2024 10:16 PM

An ancient place, cited: BAtlas 90 B1 Orotan fl.

Orymagdos (river) — by S. Mitchell — last modified Oct 27, 2017 05:12 PM

An ancient place, cited: BAtlas 66 B4 Orymagdos fl.

Oudon/Kophen (river) — by David Braund — last modified May 17, 2022 01:26 PM

This ancient river is identified by modern scholars with the Kuma, which empties into the Caspian Sea from the west.

Ouedra/Adron (river) — by A.S. Esmonde Cleary — last modified Feb 21, 2023 09:40 AM

Ouedra/Adron fl. flows eastward from the Pennines to the North Sea.

Oxinas/Kallichoros? (river) — by C. Foss — last modified Aug 11, 2022 08:52 AM

An ancient place, cited: BAtlas 86 B2 Oxinas/Kallichoros? fl.

Oxus (river) — by M.U. Erdosy — last modified Nov 06, 2024 04:42 PM

Oxus fl. (modern Amu Darya river) is a major river of central Asia. It flows from the Pamir Mountains to the Aral Sea.