The Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland to the north and Estonia to the south, to Saint Petersburg in Russia to the east, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbors are located farthest in, near Saint Petersburg. As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. Proposals for a tunnel through the gulf have been made.
The Neva is a river in northwestern Russia flowing from Lake Ladoga through the western part of Leningrad Oblast to the Neva Bay of the Gulf of Finland. Despite its modest length of 74 kilometres (46 mi), it is the fourth-largest river in Europe in terms of average discharge.
The Karelian Isthmus is the approximately 45–110-kilometre-wide (30–70 mi) stretch of land, situated between the Gulf of Finland and Lake Ladoga in northwestern Russia, to the north of the River Neva. Its northwestern boundary is a line from the Bay of Vyborg to the westernmost point of Lake Ladoga, Pekonlahti. If the Karelian Isthmus is defined as the entire territory of present-day Saint Petersburg and Leningrad Oblast to the north of the Neva and also a tiny part of the Republic of Karelia, the area of the isthmus is about 15,000 km2 (5,800 sq mi).
A seiche is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, swimming pools, bays, harbors, caves and seas. The key requirement for formation of a seiche is that the body of water be at least partially bounded, allowing the formation of the standing wave.
A storm surge, storm flood, tidal surge, or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low-pressure weather systems, such as cyclones. It is measured as the rise in water level above the normal tidal level, and does not include waves.
The Selenga or Selenge is a major river in Mongolia and Buryatia, Russia. Originating from its headwater tributaries, the Ider and the Delger mörön, it flows for 992–1,024 kilometres (616–636 mi) before draining into Lake Baikal. The Selenga therefore makes up the most distant headwaters of the Yenisey-Angara river system.
The Saint John River is a 673-kilometre-long (418 mi) river that flows from Northern Maine into Canada, and runs south along the western side of New Brunswick, emptying into the Atlantic Ocean in the Bay of Fundy. Eastern Canada's longest river, its drainage basin is one of the largest on the east coast at about 55,000 square kilometres (21,000 sq mi).
Kotlin is a Russian island, located near the head of the Gulf of Finland, 32 kilometres (20 mi) west of Saint Petersburg in the Baltic Sea. Kotlin separates the Neva Bay from the rest of the gulf. The fortified city of Kronstadt is located on the island and forms part of a World Heritage Site that is Saint Petersburg and Related Groups of Monuments. The island serves as a gateway to Saint Petersburg and as such has been the site of several military engagements. The Kotlin programming language is named for the island, much as the Java programming language shares its name with an Indonesian island.
The Peter and Paul Fortress is the original citadel of St. Petersburg, Russia, founded by Peter the Great in 1703 and built to Domenico Trezzini's designs from 1706 to 1740 as a star fortress. Between the first half of the 1700s and early 1920s it served as a prison for political criminals. It has been a museum since 1924.
Vasilyevsky Island is an island in St. Petersburg, Russia, bordered by the Bolshaya Neva and Malaya Neva Rivers in the south and northeast, and by Neva Bay of the Gulf of Finland in the west. Vasilyevsky Island is separated from Dekabristov Island by the Smolenka River. Together they form the territory of Vasileostrovsky District, an administrative division of Saint Petersburg.
A levee breach or levee failure is a situation where a levee fails or is intentionally breached, causing the previously contained water to flood the land behind the levee.
The Saint Petersburg Flood Prevention Facility Complex, unofficially the Saint Petersburg Dam, is a 25 km (16 mi) long complex of dams for flood control near Saint Petersburg, Russia. The dam extends from Lomonosov northward to Kotlin Island, then turns east toward Cape Lisiy Nos near Sestroretsk.
Saint Petersburg is a city and a federal subject located in the Northwestern Federal District of Russia. It stands at the mouth of the Neva River at the east end of the Gulf of Finland.
St. Petersburg is a major trade gateway, financial and industrial center of Russia specialising in oil and gas trade, shipbuilding yards, aerospace industry, radio and electronics, software and computers; machine building, heavy machinery and transport, including tanks and other military equipment, mining, instrument manufacture, ferrous and nonferrous metallurgy, chemicals, pharmaceuticals, medical equipment, publishing and printing, food and catering, wholesale and retail, textile and apparel industries, and many other businesses.
The Neva Bay, also known as the Gulf of Kronstadt, is the easternmost part of the Gulf of Finland between Kotlin Island and the Neva River estuary where Saint Petersburg city centre is located. It has a surface area of 329 km2 (127 sq mi). The entire bay has been separated from the Gulf of Finland by the 25 km long Saint Petersburg Dam. The area of water separated by the dam is 380 km2 (150 sq mi). The entire coastline is designated part of St. Petersburg rather than of Leningrad Oblast.
The Great Port of St. Petersburg or Port of St. Petersburg is a major seaport serving the city of St. Petersburg in northwest Russia. The port's water area is 164.6 km2. The mooring line is 31 km long and the water is 25 metres (82 ft) deep at the port's deepest anchorages. Since 2011, the port has been under the authority of a state-owned enterprise, the Port Authority of the Great Port of St. Petersburg. This agency oversees commercial navigation in the seaport of St. Petersburg and beyond in the designated areas of responsibility of the Russian Federation.
Saint Petersburg, formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), is the second-largest city in Russia. It is situated on the Neva River, at the head of the Gulf of Finland on the Baltic Sea. The city had a population of roughly 5.6 million residents as of 2021. Saint Petersburg is the fourth-most populous city in Europe, the most populous city on the Baltic Sea, and the world's northernmost city of more than 1 million residents. As Russia's Imperial capital, and a historically strategic port, it is governed as a federal city.
The Navigation Pass S-1 of Saint Petersburg Dam is a storm surge barrier in the eastern part of the Finnish Gulf to the south of the island of Kotlin, Russia. It is part of a waterway from the Baltic Sea to Saint Petersburg located at eastern end of Neva Bay. The scheme of S-1 is similar to the Maeslantkering barrier in the Netherlands and consists of two submersible caissons with dimensions 125×22 metres, which are used to close the navigable channel and thus stop storm tides from proliferating into Neva Bay. The channel is 200 metres wide and 16 metres deep. The Saint Petersburg Ring Road crosses it via an underwater tunnel.
Land loss is the term typically used to refer to the conversion of coastal land to open water by natural processes and human activities. The term land loss includes coastal erosion. It is a much broader term than coastal erosion because land loss also includes land converted to open water around the edges of estuaries and interior bays and lakes and by subsidence of coastal plain wetlands. The most important causes of land loss in coastal plains are erosion, inadequate sediment supply to beaches and wetlands, subsidence, and global sea level rise. The mixture of processes responsible for most of the land loss will vary according to the specific part of a coastal plain being examined. The definition of land loss does not include the loss of coastal lands to agricultural use, urbanization, or other development.
Saint Petersburg – second-largest city in Russia. An important Russian port on the Baltic Sea, it has the status of a federal subject. Its name was changed to "Petrograd" in 1914, then to "Leningrad" in 1924, and back to Saint Petersburg in 1991.
