InGeographica, Strabo wrote during classical antiquity that the river had its sources on Mount Adoreus, near the town of SangiainPhrygia, not far from the border with Galatia,[6] and flowed in a very tortuous course: first in an eastern, then toward the north, next the north-west and finally the north through Bithynia into the Euxine (Black Sea).
Pseudo-Plutarch wrote that a man named Sagaris often disdained the mysteries of the Mother of the Gods, frequently deriding her priests. She struck him with madness, and he flung himself into the river Xerobates, which from then on was called Sagaris.[7]
Part of its course formed the boundary between Phrygia and Bithynia, which in early times was bounded on the east by the river. The Bithynian part of the river was navigable and was celebrated for the abundance of fish found in it. Its principal tributaries were the Alander, the Bathys, the Thymbres and the Gallus.[8]
In the 13th century, the valley of the Sakarya was part of the border between the Eastern Roman Empire and the home of the Söğüt tribe. By 1280, Emperor Michael VIII Palaiologos had constructed a series of fortifications along the river to control the area, but a flood in 1302 changed the course of the river and made the fortifications useless.[9] The Söğüt tribe migrated across the river and later established the Ottoman Empire.
^Pseudo-Plutarch. "XII. Sagaris". De fluviis. Translated by Goodwin.
^Periplus of Pseudo-Scylax, p. 34; Apollon. 2.724; Scymnus. 234, foil.; Strab. xii. pp. 563, 567; Dionys. Perieg. 811; Ptol. 5.1.6; Steph. B. sub voce Liv. 38.18; Plin. Nat. 5.43; Amm. Marc. 22.9.
^Imber, Colin (17 January 2019). The Ottoman Empire, 1300-1650 : the structure of power (Third ed.). London. p. 6. ISBN978-1352004960. OCLC1034613389.{{cite book}}: CS1 maint: location missing publisher (link)
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Sangarius". Dictionary of Greek and Roman Geography. London: John Murray.
