The Dospat (Bulgarian: Доспат; Greek: Δεσπάτης, Despatis) is a river in the Western Rhodope Mountains, the most important tributary of the Mesta.

Dospat (Доспат, Δεσπάτης)
Dospat River at its mouth
Dospat River system
Location
Countries	Bulgaria and Greece
Physical characteristics
Source
• location	Rhodope Mountains
• elevation	1,610 m (5,280 ft)
Mouth
• location	Mesta/Nestos
• coordinates	41°23′25″N 24°5′15″E / 41.39028°N 24.08750°E / 41.39028; 24.08750
• elevation	366 m (1,201 ft)
Length	110 km (68 mi)
Basin size	633.5 km2 (244.6 sq mi)
Basin features
Progression	Nestos→ Aegean Sea
Tributaries
• left	Sarnena
• right	Kochan, Osina

It takes its source from the 1643-metre-high Rozov vrah ("Rose Peak") in Bulgaria and flows southeast until Dospat Dam, after which it turns southwest to continue generally to the south and flow into the Mesta as a left tributary near the village Mikrokleisoura on Greek territory just south of the Greek-Bulgarian border.

The Dospat has a drainage basin of 633.5 km². Its length is 110 km,^{[citation needed]} of which 79 km is in Bulgaria^[1] and 21 km in Greece. For a small distance of 3 km it forms the Greek–Bulgarian border.

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