Magnifying glass

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Magnifying glass
location Latvia
River system Magnifying glass
Confluence of Nemunėlis and Mūša near Bauska
56 ° 24 ′ 9 ″  N , 24 ° 9 ′ 22 ″  E
muzzle between Jūrmala and Riga in the Riga Bay Coordinates: 57 ° 0 ′ 31 ″  N , 23 ° 55 ′ 59 ″  E 57 ° 0 ′ 31 ″  N , 23 ° 55 ′ 59 ″  E
Mouth height m
Height difference 10.8 m
Bottom slope 0.09 ‰
length 119 km
Catchment area 17,600 km²
location: 110 km above the mouth
63 m³ / s
Drain MNQ
10.6 m³ / s
106 m³ / s
1380 m³ / s
Big cities Riga
Medium-sized cities Jūrmala , Jelgava
Small towns Bauska
The magnifying glass at Jelgava

The magnifying glass at Jelgava

River catchment area of ​​the Baltic Sea

River catchment area of ​​the Baltic Sea

The Lielupe (literally "Big River"; German Name: Courland Aa ) is a river in the historic landscape Semgallen (Latvian: Zemgale ) in Latvia .


The Lielupe arises from the union of the two in Lithuania springing rivers Nemunelis (Latvian: Mēmele ) and Mūša (lett .: Moosa ) in Bauska . From there it flows north. After Mežotne the valley widens and flows between Riga and Jūrmala into the Riga Bay and the Daugava (German: Düna ).

The river is already rich in water and 90 meters wide at Bauska. The Lielupe has over 250 tributaries. The largest are Mūsa , Mēmele , Iecava and Svēte .


In spring, the river usually overflows due to the accumulated ice. In the event of heavy rainfall, flooding also occurs in summer . In order to reduce the damage to agriculture, protective dams were built in many places. Due to the intensification of agriculture, the water has high levels of nitrogen and phosphorus.

The water depth is between 5 and 15 meters, which makes the river navigable. However, sandbanks that have formed at the estuary in recent years are a problem.


  • The Lielupe used to flow into the Daugava . It was not until 1755 that the current estuary formed during a spring flood. The connection to the Daugava, the Buļļupe ( Bulleraa ) river, still exists.

Web links

Commons : Lielupe  - collection of images, videos and audio files

Individual evidence

  1. a b c Article Lielupe in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)http: //vorlage_gse.test/1%3D070204~2a%3D~2b%3DLielupe