[4], In medieval times the Daugava was an important area of trading and navigation - part of the trade route from the Varangians to the Greeks - for transport of furs from the north and of Byzantine silver from the south. Electrotomography. Echosounding of shallow water body. Coastal north basin: It includes the small river basins within the coastal lowland on the opposite shores of the Gulf of Riga. Bedrock and moraine surface depth determination. The local nature of palaeokarst manifestations, significant differences in the physical and mechanical properties of the filling material in comparison with the surrounding host rocks, increased water saturation and filtration flows create significant anomalies in geophysical fields, which create good conditions for the use of a wide range of shallow-depth geophysical methods for their area and linear mapping. In 13th century river was called Wogen or Woga. The Ogre is a river in Latvia that is 188 kilometers long. You can help Wikipedia by expanding it. 0000001356 00000 n
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The yard is capable to accommodate PANAMAX size vessels for dry-docking and AFRAMAX size vessels for afloat repairs. Part of the groundwater flows to the sea or is withdrawn by wells, and part is drained by the surface network. Salaca river basin: It covers the north of the country, near the border with Estonia. According to the Law on Water Management Latvia is divided into four river basin districts (RBD) (EC, 2015; EEA, 2015): Internal renewable surface water resources (IRSWR) are estimated at 16 540 million m³/year (Table 2) and incoming surface water resources at 17 999 million m³/year. herbicides, pesticides, nitrate and phosphate). Their combined area is 3 800 km².
In combination with the drilling data performed by Meridian Ltd (Daugavpils), the position of the sides of the buried pre-glacial valley was clarified and the areas of deluvial “plumes” – clusters of coarse-grained material with high filtration properties along the bottom of the sides, which are the target horizons for the installation of drainage filters, were identified. At present, no small power stations are functioning, though the reservoirs still exist. 0000004039 00000 n
Download. That part of the groundwater flow which does not contribute to the total IRWR (overlap) is estimated at 4 300 million m³/year. In combination with the drilling data performed by Meridian Ltd (Daugavpils), the position of the sides of the buried pre-glacial valley was clarified and the areas of deluvial “plumes” – clusters of coarse-grained material with high filtration properties along the bottom of the sides, which are the target horizons for the installation of drainage filters, were identified. The Lielupe river rises in Lithuania, enters Latvia in the south and flows north to the Gulf of Riga through the most fertile regions of the country. The Venta river rises in Lithuania, enters Latvia in the southwest and flows north through the Kurzeme lowland to the Baltic Sea. Its length is 1,020 km (630 mi), of which 325 km (202 mi) are in Russia. The route was narrow and required great precision to raft.
The negative impact of karst processes on the safety of structures is manifested in the form of increased filtration of water from reservoirs through protective dams, subsidence of dam bodies, erosion of the foundations of drainage channels. The Daugava (Latgalian: Daugova; Russian: Западная Двина (Západnaya Dviná), meaning "Western Dvina"; Polish: Dźwina), is a large river rising in the Valdai Hills of Russia that flows through Belarus then Latvia into the Gulf of Riga of the Baltic Sea. 3 Floating docks up to 255 M LOA X 36 M BM. The cascade of the Daugava hydroelectric power plants forms continuous chain of reservoirs throughout the lower stream of the Daugava river, a substantial portion of the which is located along the buried preglacial palaeovally which depth in some places is more than 150 meters. Out of the Daugava's 1005 kilometre length, 352 kilometres are in Latvia. Recent. Main characteristics of the largest rivers of Belarus", Monument to the Liberators of Soviet Latvia and Riga, Museum of the History of Riga and Navigation, The Ethnographic Open-Air Museum of Latvia, https://en.wikipedia.org/w/index.php?title=Daugava&oldid=985325362, Short description is different from Wikidata, Articles containing Russian-language text, Articles containing Belarusian-language text, Articles containing Livonian-language text, Articles containing Estonian-language text, Articles containing Latgalian-language text, Articles with unsourced statements from February 2016, Wikipedia articles with WORLDCATID identifiers, Creative Commons Attribution-ShareAlike License, Francis W. Carter and David Turnock.
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