The Seret (; ancient name: Pobuk) is a minor river in the tawn of Drohobych, Lviv Oblast, Ukraine. It is a left tributary of the Tysmenytsia River (Dniester basin).

The hydronym Pobuk likely originates from the Old East Slavic "побокъ" (pobok), meaning "beside," "on either side," or "to the side" (as the river ran to the side of the Old Rus settlement). The hydronym was first mentioned in written records in 1392. During the Soviet era, the hydronym Seret officially came into use.

The river originates in the forest west of Drohobych. Beyond the forest, a reservoir locally known as Franko Lake () was constructed in 1972 on the stream and its small tributaries. It flows from west to east through Drohobych, turning southeast 600 meters before its mouth. Along its course, the stream receives two left and three right tributaries. The Seret flows near Ivasyk-Telesyk Park, crosses sixteen streets and alleys, as well as the railway line to Boryslav. The city hall is located near the river. It flows into the Tysmenytsia River from the left in the southeastern part of the city, between Tysmenytska and Ranevytska streets.

The length of the stream is 8 km, its width is up to 2 m, and its depth is approximately 0.5 meters.

The river is heavily polluted and has a distinct unpleasant odor. Of all species, only microorganisms, wild ducks, and rats can tolerate its water.

References

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3. [http://www.drohobyczer-zeitung.com/2012/10/blog-post_18.html]

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