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68-679: Almost the whole area of the district belongs to the drainage basin of the Msta River and thus to the Baltic Sea . The rivers in the northern part of the district drain into the Shlina River and its major tributary, the Granichnaya River . The Shlina originates in Lake Shlino , located on the border between Tver and Novgorod Oblasts, and crosses the northern part of the district. The main river in

136-427: A hierarchical pattern . Other terms for a drainage basin are catchment area , catchment basin , drainage area , river basin , water basin , and impluvium . In North America, they are commonly called a watershed , though in other English-speaking places, "watershed" is used only in its original sense, that of the drainage divide line. A drainage basin's boundaries are determined by watershed delineation ,

204-577: A 2012 survey, 30% of the population of Tver Oblast adheres to the Russian Orthodox Church , 9% are unaffiliated generic Christians , and 1% are Muslims . In addition, 34% of the population declares to be " spiritual but not religious ", 20% is atheist , and 5% follows other religions or did not give an answer to the question. A branch of Karelians , known as Tver Karelians , live in the oblast. They numbered 140,567 in 1926. Due to heavy casualties suffered during World War II, they vanished as

272-437: A common task in environmental engineering and science. In a closed drainage basin, or endorheic basin , rather than flowing to the ocean, water converges toward the interior of the basin, known as a sink , which may be a permanent lake, a dry lake , or a point where surface water is lost underground . Drainage basins are similar but not identical to hydrologic units , which are drainage areas delineated so as to nest into

340-457: A consequence of glaciers (clastic rocks). Minerals of industrial importance are the seams of brown coal , which form part of the Moscow coal basin . The largest deposit is Bolshoy Nelidovskiy , which gave between 1948 and 1996 about 21 million tons. Widespread powerful peat deposits totaling 15.4 billion m³. The estimated reserves of peat are 2.051 billion tonnes, representing approximately 7% of

408-449: A drainage basin, and there are different ways to interpret that data. In the unlikely event that the gauges are many and evenly distributed over an area of uniform precipitation, using the arithmetic mean method will give good results. In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for

476-540: A drainage boundary is referred to as watershed delineation . Finding the area and extent of a drainage basin is an important step in many areas of science and engineering. Most of the water that discharges from the basin outlet originated as precipitation falling on the basin. A portion of the water that enters the groundwater system beneath the drainage basin may flow towards the outlet of another drainage basin because groundwater flow directions do not always match those of their overlying drainage network. Measurement of

544-561: A height of 100–150 m. The highest point of the area has a height of 347 m and is located on the hill Tsninsky (The top of the Valdai). The lowest point (61 m) – the extreme north-west area of the river's edge Kunya ( Russian : Кунья ) on the border with the Novgorod Oblast . Minerals discovered and developed in the Tver Oblast are mainly deposits of ancient seas, lakes and swamps , and partly

612-484: A local museum. Drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth , or flows into another body of water , such as a lake or ocean . A basin is separated from adjacent basins by a perimeter, the drainage divide , made up of a succession of elevated features, such as ridges and hills . A basin may consist of smaller basins that merge at river confluences , forming

680-564: A modern tourist infrastructure. There are also many historic towns: Torzhok , Toropets , Zubtsov , Kashin , Vyshny Volochyok , and Kalyazin . The oldest of these is Rzhev , primarily known for the Battles of Rzhev in World War II . Staritsa was the seat of the last appanage principality in Russia. Ostashkov is a major tourist center. Tver Oblast is located in the west of the middle part of

748-581: A multi-level hierarchical drainage system . Hydrologic units are defined to allow multiple inlets, outlets, or sinks. In a strict sense, all drainage basins are hydrologic units but not all hydrologic units are drainage basins. About 48.71% of the world's land drains to the Atlantic Ocean . In North America , surface water drains to the Atlantic via the Saint Lawrence River and Great Lakes basins,

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816-476: A paved road with Vyshny Volochyok . The road also provides access to the M10 highway which connects Moscow and Saint Petersburg. There are also local roads, one of which crosses into Novgorod Oblast. The district twelve objects classified as cultural and historical heritage of local significance. They include a number of historical buildings as well as several monuments to soldiers fallen in World War II . Firovo hosts

884-697: A tributary of the Volga River . Firovsky District is located on the Valdai Hills which are notable by its large lake district. The largest lakes within the district are Lake Shlino and Lake Seremo . More than 50% of the area of the district is covered by forest. The area was in the Middle Ages dependent on the Novgorod Republic , later it belonged to Derevskaya Pyatina, one of the five pyatinas into which Novgorod Lands were divided. The village of Zhabny

952-465: A very strong economy due to its machinery industry in the automobile and aeronautics sectors. The Oblast has a well-developed infrastructure consisting of railway, river, motor vehicle, air, and pipeline transportation systems. Tver Oblast has one of the highest proportions of paved roads in the country. The region's location between Russia's two major cities, Moscow and St. Petersburg, has an obvious influence on traffic flows from Northern Europe and

1020-517: Is believed to be founded in the 12th century and to be a native place of Nilus Stolobensky , the 15th century saint and the founder of the Nilov Monastery on Stolobny Island . In the course of the administrative reform carried out in 1708 by Peter the Great , the area was included into Ingermanland Governorate (known since 1710 as Saint Petersburg Governorate ). In 1727, separate Novgorod Governorate

1088-429: Is crossed by two federal highways : M10 "Russia" and M9 "Baltic". Of internal roads are significant Torzhok A111 – A112 Ostashkov and Tver- Rzhev . The length of paved roads – 16,032 km. There are three civilian airports close to Tver: Migalovo with a runway for commercial aviation, 2500m in length, airport local lines Zmeevo (now – heliport) and Orlovka Airfield (ICAO: UUTO). The development of navigation on

1156-729: Is located in Bologoye. Bologovskiy assembly includes five areas: Moscow, St. Petersburg, Pskov, Yaroslavl, and Great Luke. The narrow gauge railway of KSM-2 factory , Tver serves a factory of building materials No.2 in Tver. Population : 1,230,171 ( 2021 Census ) ; 1,353,392 ( 2010 Census ) ; 1,471,459 ( 2002 Census ) ; 1,670,117 ( 1989 Soviet census ) . Vital statistics for 2022: Total fertility rate (2022): 1.30 children per woman Life expectancy (2021): Total — 67.87 years (male — 62.81, female — 73.04) Ethnic composition (2021): According to

1224-480: Is referred to as " watershed management ". In Brazil , the National Policy of Water Resources, regulated by Act n° 9.433 of 1997, establishes the drainage basin as the territorial division of Brazilian water management. When a river basin crosses at least one political border, either a border within a nation or an international boundary, it is identified as a transboundary river . Management of such basins becomes

1292-600: Is the Dead Sea . Drainage basins have been historically important for determining territorial boundaries, particularly in regions where trade by water has been important. For example, the English crown gave the Hudson's Bay Company a monopoly on the fur trade in the entire Hudson Bay basin, an area called Rupert's Land . Bioregional political organization today includes agreements of states (e.g., international treaties and, within

1360-626: Is the city of Tver . From 1935 to 1990, it was known as Kalinin Oblast ( Russian : Калининская область ). Population: 1,353,392 ( 2010 Census ) . Tver Oblast is a region of lakes, such as Seliger and Brosno . Much of the remaining area is occupied by the Valdai Hills , where the Volga , the Western Dvina , and the Dnieper have their source. Tver Oblast is one of the tourist regions of Russia with

1428-602: Is the fundamental law of the region. The Legislative Assembly of Tver Oblast is the province's standing legislative (representative) body. The Legislative Assembly exercises its authority by passing laws, resolutions, and other legal acts and by supervising the implementation and observance of the laws and other legal acts passed by it. The highest executive body is the Oblast Administration, which includes territorial executive bodies such as district administrations, committees, and commissions that facilitate development and run

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1496-682: The African Great Lakes , the interiors of Australia and the Arabian Peninsula , and parts in Mexico and the Andes . Some of these, such as the Great Basin, are not single drainage basins but collections of separate, adjacent closed basins. In endorheic bodies of water where evaporation is the primary means of water loss, the water is typically more saline than the oceans. An extreme example of this

1564-524: The Baltic countries to central Russia. Passes through the region connecting the main "two capitals" Railway – October single-track railway with branches in Rzhev and Vyazma , Kuvshinovo and Selizharovo through Torzhok. Equally important are single-track diesel Moscow – Kashin – St. Petersburg and Moscow – Riga, and Yaroslavl – Bologoe – Great Luke and Bologoe – The bottom of the (station ), but very popular. The area

1632-495: The East European Plain . It stretches for 260 km from north to south and 450 km from west to east. The area borders Yaroslavl Oblast in the east, Vologda Oblast in the northeast, Novgorod Oblast in the northwest and north, Moscow in the southeast, Smolensk Oblast in the southwest, and Pskov Oblast in the west. The area of Tver Oblast is 84201 km , the 38th of 85 subjects . This accounts for 0.49% of

1700-584: The Eastern Seaboard of the United States, the Canadian Maritimes , and most of Newfoundland and Labrador . Nearly all of South America east of the Andes also drains to the Atlantic, as does most of Western and Central Europe and the greatest portion of western Sub-Saharan Africa , as well as Western Sahara and part of Morocco . The two major mediterranean seas of the world also flow to

1768-612: The Liberal Democratic Party – 11.01%. Thus, according to the party lists, the United Russia party received nine seats in the Legislative Assembly. In single-mandate constituencies, candidates from United Russia also won in 17 out of 20 constituencies, and communist candidates won in the other three. In general, United Russia received 26 mandates out of 40. The Communists received eight mandates, A Just Russia – four, and

1836-718: The Mississippi (3.22 million km ), and the Río de la Plata (3.17 million km ). The three rivers that drain the most water, from most to least, are the Amazon, Ganges , and Congo rivers. Endorheic basin are inland basins that do not drain to an ocean. Endorheic basins cover around 18% of the Earth's land. Some endorheic basins drain to an Endorheic lake or Inland sea . Many of these lakes are ephemeral or vary dramatically in size depending on climate and inflow. If water evaporates or infiltrates into

1904-781: The Nile River ), Southern , Central, and Eastern Europe , Turkey , and the coastal areas of Israel , Lebanon , and Syria . The Arctic Ocean drains most of Western Canada and Northern Canada east of the Continental Divide , northern Alaska and parts of North Dakota , South Dakota , Minnesota , and Montana in the United States, the north shore of the Scandinavian peninsula in Europe, central and northern Russia, and parts of Kazakhstan and Mongolia in Asia , which totals to about 17% of

1972-746: The Presidium of the Supreme Soviet of the Russian SFSR , the Kalinin Oblast was renamed Tver Oblast. On 21 April 1992, the Congress of People's Deputies of Russia approved the decision of the presidium of the parliament to rename the region, amending Art. 71 of the Constitution of the Russian SFSR of 1978, which entered into force on May 16, 1992. On 13 June 1996, Tver Oblast, alongside Leningrad Oblast and

2040-525: The Tsna (160 km). The climate is humid continental , transitional from continental Russia to the more humid north-western regions. The area lies in a zone of comfort for living and recreation in climatic conditions. Average January temperatures range from −8 °C (18 °F) in west to −13 °C (9 °F) in northeast, and July from +17 °C (63 °F) to +19 °C (66 °F) °C. The average annual rainfall ranges from 560 to 720 mm, and

2108-437: The groundwater . A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. Tver Oblast Tver Oblast ( Russian : Тверская область , romanized :  Tverskaya oblast' , IPA: [tvʲɪrˈskajə ˈobləsʲtʲ] ) is a federal subject of Russia (an oblast ). Its administrative center

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2176-584: The 18th century, Tver became an administrative center; at first, it was part of Saint Petersburg Governorate (1708–1727), and then, of Novgorod Governorate . In 1775, the Tver Viceroyalty was formed; in 1796, it was transformed into Tver Governorate . In September 1929, Tver became the administrative center of Tver District of Moscow Oblast in the Russian Soviet Federative Socialist Republic (Russian SFSR). In November 1931,

2244-758: The Andes. The Indian Ocean 's drainage basin also comprises about 13% of Earth's land. It drains the eastern coast of Africa, the coasts of the Red Sea and the Persian Gulf , the Indian subcontinent , Burma, and most parts of Australia . The five largest river basins (by area), from largest to smallest, are those of the Amazon (7 million km ), the Congo (4 million km ), the Nile (3.4 million km ),

2312-701: The Atlantic. The Caribbean Sea and Gulf of Mexico basin includes most of the U.S. interior between the Appalachian and Rocky Mountains , a small part of the Canadian provinces of Alberta and Saskatchewan , eastern Central America , the islands of the Caribbean and the Gulf, and a small part of northern South America. The Mediterranean Sea basin, with the Black Sea , includes much of North Africa , east-central Africa (through

2380-683: The Liberal Democratic Party – two. Legislative power is exercised by the Legislative Assembly of the Tver Oblast, and executive power is exercised by the Government of the Tver Oblast, headed by the Governor. Administratively , Tver Oblast is divided into two urban-type settlements under the federal government management ( Ozyorny and Solnechny ), five cities and towns of oblast significance ( Tver , Kimry , Rzhev , Torzhok , and Vyshny Volochyok ), and thirty-six districts . Tver Oblast has

2448-779: The Tver CPSU Committee (who in reality had the biggest authority), the chairman of the oblast Soviet (legislative power), and the Chairman of the oblast Executive Committee (executive power). After the abolition of Article 6 of the Constitution of the USSR in March 1990, the CPSU lost its monopoly on power. The head of the Oblast administration, and eventually the governor was appointed/elected alongside elected regional parliament . The Charter of Tver Oblast

2516-598: The US, interstate compacts ) or other political entities in a particular drainage basin to manage the body or bodies of water into which it drains. Examples of such interstate compacts are the Great Lakes Commission and the Tahoe Regional Planning Agency . In hydrology , the drainage basin is a logical unit of focus for studying the movement of water within the hydrological cycle . The process of finding

2584-622: The Volga river port "Tver" with a cargo jetty for boats "river-sea" with a draft of up to four meters. Four railways going from Moscow to the north, northwest and west cross the region: to Saint Petersburg via Tver – Bologoye (main course of the Oktyabrskaya Railway ), west across the Rzhev – Velikiye Luki (branch of Riga , Vilnius , Warsaw and Kaliningrad – Berlin . to Kimry – Sonkovo – Pestovo – St. Petersburg; to Pskov through Tver – Bologoe. The largest railway junction of Tver Oblast

2652-406: The basin, it can form tributaries that change the structure of the land. There are three different main types, which are affected by the rocks and ground underneath. Rock that is quick to erode forms dendritic patterns, and these are seen most often. The two other types of patterns that form are trellis patterns and rectangular patterns. Rain gauge data is used to measure total precipitation over

2720-513: The city of Saint Petersburg , signed a power-sharing agreement with the federal government, granting it autonomy. This agreement would be abolished on 19 February 2002. On August 23, 2023, a private jet carrying Yevgeny Prigozhin , the Wagner Group leader, crashed in the region. During the Soviet period, the high authority in the oblast was shared between three persons: The first secretary of

2788-629: The city of Tver was renamed Kalinin. On 29 January 1935, Kalinin Oblast was formed from parts of Western , Leningrad and Moscow Oblasts. Ostashkov housed a NKVD prisoner-of-war camp for some 7,000 Poles, taken prisoner during the invasion of Poland at the start of World War II , 6,300 of whom were murdered in 1940 in Kalinin as part of the Katyn massacre , and buried in Mednoye . Germany occupied part of this area from 1941 to 1943. On 17 July 1990, by decree of

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2856-541: The day-to-day matters of the province. The Oblast administration supports the activities of the Governor who is the highest official and acts as guarantor of the observance of the Oblast Charter in accordance with the Constitution of Russia . On 13 March 2011, elections to the regional legislative assembly were held. United Russia received 39.8% of the vote, the Communist Party – 24.6%, A Just Russia – 21.3%, and

2924-430: The discharge of water from a basin may be made by a stream gauge located at the basin's outlet. Depending on the conditions of the drainage basin, as rainfall occurs some of it seeps directly into the ground. This water will either remain underground, slowly making its way downhill and eventually reaching the basin, or it will permeate deeper into the soil and consolidate into groundwater aquifers. As water flows through

2992-441: The drainage area is dependent on the soil type. Certain soil types such as sandy soils are very free-draining, and rainfall on sandy soil is likely to be absorbed by the ground. However, soils containing clay can be almost impermeable and therefore rainfall on clay soils will run off and contribute to flood volumes. After prolonged rainfall even free-draining soils can become saturated , meaning that any further rainfall will reach

3060-642: The drainage basin to the mouth, and may accumulate there, disturbing the natural mineral balance. This can cause eutrophication where plant growth is accelerated by the additional material. Because drainage basins are coherent entities in a hydrological sense, it has become common to manage water resources on the basis of individual basins. In the U.S. state of Minnesota , governmental entities that perform this function are called " watershed districts ". In New Zealand, they are called catchment boards. Comparable community groups based in Ontario, Canada, are called conservation authorities . In North America, this function

3128-450: The fighting between the Rostov-Suzdal princes and the Novgorod Republic . From the 13th to 15th centuries, the area was part of the Principality of Tver , which competed with Moscow for supremacy in Russia, except for the western outskirts with Toropets , which were part of the Principality of Smolensk and Grand Duchy of Lithuania . The south-western part with Bely formed part of the Polish–Lithuanian Commonwealth until 1654. In

3196-414: The greatest amount of precipitation falls on the western slopes of the Valdai Hills. The snow cover starts in mid-November, the period with snow cover lasts 130–150 days, and snow depth is about 40–60 cm, with a maximum of 80 cm. There was a settlement on land at the confluence of the Tmaka River and Volga Rivers in the 9th and 10th centuries. A fortress was built on the site much later, during

3264-435: The ground and along rivers it can pick up nutrients , sediment , and pollutants . With the water, they are transported towards the outlet of the basin, and can affect the ecological processes along the way as well as in the receiving water body . Modern use of artificial fertilizers , containing nitrogen (as nitrates ), phosphorus , and potassium , has affected the mouths of drainage basins. The minerals are carried by

3332-422: The ground at its terminus, the area can go by several names, such playa, salt flat, dry lake , or alkali sink . The largest endorheic basins are in Central Asia , including the Caspian Sea , the Aral Sea , and numerous smaller lakes. Other endorheic regions include the Great Basin in the United States, much of the Sahara Desert , the drainage basin of the Okavango River ( Kalahari Basin ), highlands near

3400-406: The medicinal table water Kashinskaya  [ ru ] . The region is a watershed of the Caspian Sea and Baltic Sea. In the south, the Belsky district has several tributaries of the upper reaches of the river Vop , the right tributary of the Dnieper River (basin of the Black Sea). Go to the Caspian Sea basin owns 70% of the region, the Baltic Sea – 29.7% . There are more than 800 rivers in

3468-452: The oblast was divided into districts. In particular, Ostashkovsky District with the administrative center of Ostashkov was established as a part of Velikiye Luki Okrug . On August 1, 1930 the okrugs were abolished, and the districts were subordinated directly to the oblast. On March 5, 1935 Kalinin Oblast was established. It included areas which formerly belonged to Moscow, Leningrad, and Western Oblasts. In particular, Firovsky District

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3536-418: The rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons. The isohyetal method involves contours of equal precipitation are drawn over the gauges on a map. Calculating the area between these curves and adding up the volume of water is time-consuming. Isochrone maps can be used to show

3604-412: The region longer than 10 km with a total length of about 17,000 km. The main river – Volga ( 685 km within the region). Its source is in the Ostashkov area. The most important tributaries of the Volga: the Mologa (280 km), the Medveditsa (269 km), the Tvertsa (188 km). Other important rivers: the Western Dvina and its tributary the Mezha (259 km), the Msta and

3672-572: The responsibility of the countries sharing it. Nile Basin Initiative , OMVS for Senegal River , Mekong River Commission are a few examples of arrangements involving management of shared river basins. Management of shared drainage basins is also seen as a way to build lasting peaceful relationships among countries. The catchment is the most significant factor determining the amount or likelihood of flooding . Catchment factors are: topography , shape, size, soil type, and land use (paved or roofed areas). Catchment topography and shape determine

3740-461: The river rather than being absorbed by the ground. If the surface is impermeable the precipitation will create surface run-off which will lead to higher risk of flooding; if the ground is permeable, the precipitation will infiltrate the soil. Land use can contribute to the volume of water reaching the river, in a similar way to clay soils. For example, rainfall on roofs, pavements , and roads will be collected by rivers with almost no absorption into

3808-410: The southern part of the district is the Tsna , which crosses the area of the district as well. Both the Shlina and the Tsna are left tributaries of the Msta, technically of the Vyshny Volochyok Reservoir . Some areas in the east of the district belong to the Lonnitsa River , a right tributary of the Shlina. Minor areas in the southeast of the district belong to the drainage basin of the Tvertsa River ,

3876-418: The speed with which the runoff reaches a river. A long thin catchment will take longer to drain than a circular catchment. Size will help determine the amount of water reaching the river, as the larger the catchment the greater the potential for flooding. It is also determined on the basis of length and width of the drainage basin. Soil type will help determine how much water reaches the river. The runoff from

3944-693: The stock of European Russia . On an industrial scale mastered 43 peat deposits with a total area of about 300 hectares, the main exploited stocks are concentrated in five fields located in the central and southern parts of the oblast. From 1971 to 1999, has developed more than 44 million tons of peat. Distributed limestones (near the town of Bayou several centuries developed reserves of white Staritskogo stone ). Dolomitic limestones are common along rivers Vazuza, Osugi, Tsna (marble-like limestone), there are deposits of tile , brick and pottery ( refractory ) of clay and quartz sand, sapropel are numerous underground fresh water and mineral formations, and sources for

4012-440: The territory of Russia, and it is the largest territory (by area) of the Central Federal District . Tver Oblast as a whole is characterized by flat terrain with alternating lowlands and highlands due to its location in the East European Plain . In the western part of the province, occupying about one-third of its area is Valdai Hills , with elevations of 200–300 m above sea level. It is surrounded by depressions, lowlands, and has

4080-415: The time taken for rain to reach the river, while catchment size, soil type, and development determine the amount of water to reach the river. Generally, topography plays a big part in how fast runoff will reach a river. Rain that falls in steep mountainous areas will reach the primary river in the drainage basin faster than flat or lightly sloping areas (e.g., > 1% gradient). Shape will contribute to

4148-477: The time taken for runoff water within a drainage basin to reach a lake, reservoir or outlet, assuming constant and uniform effective rainfall. Drainage basins are the principal hydrologic unit considered in fluvial geomorphology . A drainage basin is the source for water and sediment that moves from higher elevation through the river system to lower elevations as they reshape the channel forms. Drainage basins are important in ecology . As water flows over

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4216-468: The world's land. Just over 13% of the land in the world drains to the Pacific Ocean . Its basin includes much of China, eastern and southeastern Russia, Japan, the Korean Peninsula , most of Indochina, Indonesia and Malaysia, the Philippines, all of the Pacific Islands , the northeast coast of Australia , and Canada and the United States west of the Continental Divide (including most of Alaska), as well as western Central America and South America west of

4284-455: Was Yesenovichsky District with the administrative center in the selo of Yesenovichi . It was a part of Tver Okrug of Moscow Oblast. In 1935, it was transferred to Kalinin Oblast. On August 22, 1958 Yesenovichsky District was abolished and split between Vyshnevolotsky, Novotorzhsky , Kamensky , and Firovsky Districts. There are enterprises of timber and food industries in the district. The glass-making factory in Velikooktyabrsky which

4352-404: Was abolished, and Rozhdestvensky District was established, with the administrative center in the selo of Rozhdestvo . It was a part of Borovichi Okrug of Leningrad Oblast . On September 20, 1931, Rozhdestvensky District was abolished and merged into Bologovsky District. The area of the district currently belongs to Firovsky District. On July 12, 1929 Tver Governorate with its uyezds

4420-423: Was abolished, and Vyshnevolotsky District was established, with the administrative center in the town of Vyshny Volochyok . It belonged to Tver Okrug of Moscow Oblast . On July 23, 1930, the okrugs were abolished, and the districts were directly subordinated to the oblast. On October 1, 1929 Western Oblast was established. The northern part of Ostashkovsky Uyezd was transferred to Northern Oblast, and

4488-412: Was established on the areas which previously belonged to Bologovsky, Ostashkovsky, and Vyshnevolotsky Districts. In February 1963, during the abortive administrative reform by Nikita Khrushchev , Firovsky District was merged into Vyshnevolotsky District, but on April 6, 1972 it was re-established. In 1990, Kalinin Oblast was renamed Tver Oblast. Another district established on July 12, 1929

4556-412: Was split off. In 1775, Tver Viceroyalty (since 1796 known as Tver Governorate ) was established, and parts of the current area of the district were transferred to Tver Viceroyalty. In the 19th century, the area was split between Valdaysky Uyezd of Novgorod Governorate and Vyshnevolotsky and Ostashkovsky Uyezds of Tver Governorate. Effective October 1, 1927 Novgorod Governorate with its uyezds

4624-413: Was the largest industrial enterprise of the district was declared bankrupt in 2010. The main agricultural specialization of the district is cattle breeding with meat and milk production. A railway connecting Bologoye and Velikiye Luki crosses the district from northeast to southwest. Firovo is the main railway station within the district. There is infrequent passenger traffic. Firovo is connected by

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