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Lielupe
Lielupe
	Lielupe near Mežotne
	Course of the Lielupe in Latvia
Location
Country	Latvia, Lithuania
Physical characteristics
Source
• location	Bauska, Latvia
Mouth
• location	Gulf of Riga at Vakarbuļļi
• coordinates	57°00′31″N 23°55′59″E / 57.00861°N 23.93306°E
Length	119 kilometres (74 mi)
Basin size	17,600 km2 (6,800 sq mi) (In Latvia: 8,800 km2 or 3,400 sq mi)
Discharge
• average	106 m3/s (3,700 cu ft/s)

The Lielupe^[a] is a river in central Latvia. Its length is 119 km (74 mi), or 310 km (190 mi) if the Mēmele River is counted as part of it. The surface area of its drainage basin is 17,600 km² (6,800 sq mi).^[1] The average fall of the Lielupe is about 0.1 m/km (0.53 ft/mi) and its average flow is 106 m³/s (3,700 cu ft/s), although a maximum of 1,380 m³/s (49,000 cu ft/s) has been reached during floods.

Physical geography

The Lielupe begins at the confluence of the Mēmele and Mūsa rivers near Bauska. For the upper part of its course, the river flows through a dolomite valley with a few small rapids, until it reaches Mežotne, where it widens and deepens over the flat Zemgale Plain. For many years the Lielupe would frequently overflow its shallow banks and flood surrounding fields and villages, particularly during the spring thaw. Today many parts of the Lielupe's banks are contained with earthen dikes to prevent disastrous floods. Much of the Lielupe is covered in river grasses. At its lower reaches, the river flows parallel to the coastline of the Gulf of Riga; the city of Jūrmala stretches for almost 30 km (19 mi) between the river and the sea. Eventually the Lielupe flows into the Baltic Sea, while the Buļļupe branch (German: Kurische Aa) flows into the Daugava River. The modern mouth of the river appeared in 1755. Before then the Buļļupe was the Lielupe's main channel.

About 50-55% of the water discharge of the river is from melted snow. The Lielupe is navigable for a range of 100 km (60 mi), the longest continuous range among Latvian rivers. Municipalities along the river include Bauska, Mežotne, Jelgava, Kalnciems, Jūrmala and Riga.

The Lielupe also gives its name to a railway station and a neighbourhood in the city of Jūrmala.