Vadakste
River is on the Lithuanian-Latvian border.
Native name	Vadakstis (Lithuanian) Vadakste (Latvian)
Location
Country	Latvia  Lithuania
Physical characteristics
Source
• coordinates	56°29′45″N 22°55′43″E / 56.49583°N 22.92861°E / 56.49583; 22.92861
• elevation	43 m (141 ft)
Mouth
• location	Venta River
• coordinates	56°24′43″N 22°13′3″E / 56.41194°N 22.21750°E / 56.41194; 22.21750
Length	82.2 km (51.1 mi)
Basin size	1,230 km2 (470 sq mi)
Discharge
• average	95 m3/s (3,400 cu ft/s)
Basin features
Tributaries
• left	Mežupe [lv], Agluona, Ašva [lt]
• right	Līgotne, Avīkne, Benaišu strauts, Burbuļ strauts, Alkšņupe, Ezere River [lv], Suste, Rīku strauts, Pestīle

The Vadakste (Lithuanian: Vadakstis) is a river in southern Latvia and northern Lithuania. It is a right tributary of the Venta River. The length is 82.2 km (51.1 mi), of which over 55 km (34 mi) follow the Latvia–Lithuania border. The catchment area is 1,230 km² (470 sq mi).^[1] It originates near the city Auce, Latvia. It flows first in a southwest, and then in a westerly direction. It begins to flow along the border between Latvia and Lithuania from the village of Vegeriai. It flows into Venta at 184.2 km (114.5 mi) from its mouth, in the village of Griežė, 2 km (1.2 mi) northwest of Leckava.

The main tributaries: Ašva [lt], Ezere River [lv], Agluona and Avīkne. The average river slope is 73 cm/km.^[2]

Wikimedia Commons has media related to Vadakstis.