Gashnya

The Gashnya (Bulgarian: Гашня) is a 20 km long river in southern Bulgaria, flowing through Pazardzhik and Smolyan Provinces. It is a left tributary of the Vacha, itself a right tributary of the Maritsa.^[1] There are no settlements along its course.

Gashnya
Location
Country	Bulgaria
Physical characteristics
Source
• location	SE of Batashki Snezhnik, Rhodope Mountains
• coordinates	41°52′57″N 24°15′20.88″E
• elevation	2,018 m (6,621 ft)
Mouth
• location	Vacha
• coordinates	41°49′14.88″N 24°26′21.12″E
• elevation	689 m (2,260 ft)
Length	20 km (12 mi)
Basin size	54 km2 (21 sq mi)
Basin features
Progression	Vacha→ Maritsa→ Aegean Sea

The river springs at an altitude of 2,018 m from the southeastern slopes of the summit of Batashki Snezhnik (2,082 m) in the Batak Mountain of the western Rhodope Mountains. It flows in eastern–southeastern direction in a deep forested valley. At an altitude of 689 m the Gashnya flows into the Tsankov Kamak Reservoir, just upstream of its dam, constructed on the river Vacha.^[1]

Its drainage basin covers a territory of 54 km²,^[1] or 3.3% of the Vacha's total. The Gashnya has predominantly rain–snow feed with high water in April–May and low water in October. Part of the waters along its upper course are diverted west to be utilized for electricity generation at the Batak Hydropower Cascade (254 MW), while the rest are utilized at the Dospat–Vacha Hydropower Cascade (500.2 MW).^[1]