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109-831: Hungry Horse Dam is an arch dam in the Western United States , on the South Fork Flathead River in the Rocky Mountains of northwest Montana . It is located in Flathead National Forest in Flathead County , about fifteen miles (24 km) south of the west entrance to Glacier National Park , nine miles (14 km) southeast of Columbia Falls , and twenty miles (32 km) northeast of Kalispell . The Hungry Horse project, dam, and powerplant are operated by

218-626: A classical republic and then to an increasingly autocratic military dictatorship during the Empire. Ancient Rome is often grouped into classical antiquity together with ancient Greece , and their similar cultures and societies are known as the Greco-Roman world . Ancient Roman civilisation has contributed to modern language, religion, society, technology, law, politics, government, warfare, art, literature, architecture, and engineering. Rome professionalised and expanded its military and created

327-625: A 64-by-12-foot (19.5 by 3.7 m) ring gate. The surface elevation of the reservoir is 3,560 feet (1,085 m) above sea level . The dam is managed to provide beneficial flow conditions and to provide safe passage for migrating juvenile fish to reach the Columbia River Estuary and the Pacific Ocean. Construction was authorized by the Act of June 5, 1944 (58 Stat. 270, Public Law 78-329). In April 1948, Reclamation awarded

436-738: A Gallic army under the leadership of tribal chieftain Brennus , defeated the Romans at the Battle of the Allia and marched to Rome. The Gauls looted and burned the city, then laid siege to the Capitoline Hill, where some Romans had barricaded themselves, for seven months. The Gauls then agreed to give the Romans peace in exchange for 1000 pounds of gold. According to later legend, the Roman supervising

545-406: A Republic. Augustus ( r.  27 BC – AD 14 ) gathered almost all the republican powers under his official title, princeps , and diminished the political influence of the senatorial class by boosting the equestrian class . The senators lost their right to rule certain provinces, like Egypt, since the governor of that province was directly nominated by the emperor. The creation of

654-507: A banquet for its notable citizens, after which his soldiers killed all the guests. From the security of the temple of Sarapis, he then directed an indiscriminate slaughter of Alexandria's people. In 212, he issued the Edict of Caracalla , giving full Roman citizenship to all free men living in the Empire, with the exception of the dediticii , people who had become subject to Rome through surrender in war, and freed slaves. Mary Beard points to

763-503: A billion kilowatt–hours are generated annually at Hungry Horse Dam, while in an average year the release water will generate about 4.6 billion kilowatt–hours of power as it passes through the series of downstream powerplants. Power generating facilities at Hungry Horse Dam are housed in a building constructed across the river channel at the downstream toe of the dam. The original design included four 71,250-kilowatt generators—a total of 285 megawatts installed capacity. The generator capacity

872-464: A ceremony on October 1, 1952, President Harry S. Truman threw a switch to start power generation. The road across the dam opened to the public on November 2, 1953. The project contributes to hydroelectric power generation not only at Hungry Horse Dam, but by storing and releasing water for use by downriver hydroelectric dams on the Flathead , Clark Fork , Pend Oreille , and Columbia rivers. About

981-777: A combination of treaties and military strength. It eventually controlled the Italian Peninsula, assimilating the Greek culture of southern Italy ( Magna Grecia ) and the Etruscan culture, and then became the dominant power in the Mediterranean region and parts of Europe. At its height it controlled the North African coast, Egypt , Southern Europe, and most of Western Europe, the Balkans , Crimea , and much of

1090-475: A crescent, so that the curve, by lying against the current of the river, might be able to offer still more resistance to the force of the stream." The Mongols also built arch dams in modern-day Iran. Their earliest was the Kebar Dam built around 1300, which was 26 m (85 ft) high and 55 m (180 ft) long, and had a radius of 35 m (115 ft). Their second dam was built around 1350 and

1199-483: A free path to reestablish his own power. In 83 BC he made his second march on Rome and began a time of terror: thousands of nobles, knights and senators were executed. Sulla held two dictatorships and one more consulship, which began the crisis and decline of Roman Republic. In the mid-1st century BC, Roman politics were restless. Political divisions in Rome split into one of two groups, populares (who hoped for

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1308-672: A half century after these events, Carthage was left humiliated and the Republic's focus was now directed towards the Hellenistic kingdoms of Greece and revolts in Hispania . However, Carthage, having paid the war indemnity, felt that its commitments and submission to Rome had ceased, a vision not shared by the Roman Senate . The Third Punic War began when Rome declared war against Carthage in 149 BC. Carthage resisted well at

1417-516: A hundred days. These games included gladiatorial combats , horse races and a sensational mock naval battle on the flooded grounds of the Colosseum. Titus died of fever in 81 AD, and was succeeded by his brother Domitian . As emperor, Domitian showed the characteristics of a tyrant . He ruled for fifteen years, during which time he acquired a reputation for self-promotion as a living god. He constructed at least two temples in honour of Jupiter,

1526-628: A large proletariat often of impoverished farmers. The latter groups supported the Catilinarian conspiracy —a resounding failure since the consul Marcus Tullius Cicero quickly arrested and executed the main leaders. Gaius Julius Caesar reconciled the two most powerful men in Rome: Marcus Licinius Crassus , who had financed much of his earlier career, and Crassus' rival, Gnaeus Pompeius Magnus (anglicised as Pompey), to whom he married his daughter . He formed them into

1635-538: A long time to reach the north west coast, and in 60 AD he finally crossed the Menai Strait to the sacred island of Mona ( Anglesey ), the last stronghold of the druids . His soldiers attacked the island and massacred the druids: men, women and children, destroyed the shrine and the sacred groves and threw many of the sacred standing stones into the sea. While Paulinus and his troops were massacring druids in Mona,

1744-710: A military leader to defeat the Cimbri and the Teutones , who were threatening Rome. After Marius's retirement, Rome had a brief peace, during which the Italian socii ("allies" in Latin) requested Roman citizenship and voting rights. The reformist Marcus Livius Drusus supported their legal process but was assassinated, and the socii revolted against the Romans in the Social War . At one point both consuls were killed; Marius

1853-658: A new informal alliance including himself, the First Triumvirate ("three men"). Caesar's daughter died in childbirth in 54 BC, and in 53 BC, Crassus invaded Parthia and was killed in the Battle of Carrhae ; the Triumvirate disintegrated. Caesar conquered Gaul , obtained immense wealth, respect in Rome and the loyalty of battle-hardened legions. He became a threat to Pompey and was loathed by many optimates . Confident that Caesar could be stopped by legal means, Pompey's party tried to strip Caesar of his legions,

1962-519: A pair of tribunes who attempted to pass land reform legislation that would redistribute the major patrician landholdings among the plebeians. Both brothers were killed and the Senate passed reforms reversing the Gracchi brother's actions. This led to the growing divide of the plebeian groups ( populares ) and equestrian classes ( optimates ). Gaius Marius soon become a leader of the Republic, holding

2071-538: A period of turbulence. Archaeological evidence implies some degree of large-scale warfare. According to tradition and later writers such as Livy , the Roman Republic was established c.  509 BC , when the last of the seven kings of Rome, Tarquin the Proud , was deposed and a system based on annually elected magistrates and various representative assemblies was established. A constitution set

2180-580: A prelude to Caesar's trial, impoverishment, and exile. To avoid this fate, Caesar crossed the Rubicon River and invaded Rome in 49 BC. The Battle of Pharsalus was a brilliant victory for Caesar and in this and other campaigns, he destroyed all of the optimates leaders: Metellus Scipio , Cato the Younger , and Pompey's son, Gnaeus Pompeius . Pompey was murdered in Egypt in 48 BC. Caesar

2289-401: A radius of 19 m (62 ft). The curved ends of the dam met with two winged walls that were later supported by two buttresses. The dam also contained two water outlets to drive mills downstream. The Dara Dam was another arch dam built by the Romans in which the historian Procopius would write of its design: "This barrier was not built in a straight line, but was bent into the shape of

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2398-619: A revolt in Mauretania and the Bar Kokhba revolt in Judea. This was the last large-scale Jewish revolt against the Romans, and was suppressed with massive repercussions in Judea. Hundreds of thousands of Jews were killed. Hadrian renamed the province of Judea " Provincia Syria Palaestina ", after one of Judea's most hated enemies. He constructed fortifications and walls, like the celebrated Hadrian's Wall which separated Roman Britannia and

2507-458: A rich Arabian city. Severus killed his legate, who was gaining respect from the legions; and his soldiers fell victim to famine. After this disastrous campaign, he withdrew. Severus also intended to vanquish the whole of Britannia. To achieve this, he waged war against the Caledonians . After many casualties in the army due to the terrain and the barbarians' ambushes, Severus himself went to

2616-646: A sea voyage to found a new Troy after the Trojan War . They landed on the banks of the Tiber River and a woman travelling with them, Roma, torched their ships to prevent them leaving again. They named the settlement after her. The Roman poet Virgil recounted this legend in his classical epic poem the Aeneid , where the Trojan prince Aeneas is destined to found a new Troy. Literary and archaeological evidence

2725-675: A series of checks and balances , and a separation of powers . The most important magistrates were the two consuls , who together exercised executive authority such as imperium , or military command. The consuls had to work with the Senate , which was initially an advisory council of the ranking nobility, or patricians , but grew in size and power. Other magistrates of the Republic include tribunes , quaestors , aediles , praetors and censors . The magistracies were originally restricted to patricians , but were later opened to common people, or plebeians . Republican voting assemblies included

2834-697: A statue of Apollo and the temple of Divus Claudius ("the deified Claudius"), both initiated by Nero. Buildings destroyed by the Great Fire of Rome were rebuilt, and he revitalised the Capitol . Vespasian started the construction of the Flavian Amphitheater, commonly known as the Colosseum . The historians Josephus and Pliny the Elder wrote their works during Vespasian's reign. Vespasian

2943-546: A system of government called res publica , the inspiration for modern republics such as the United States and France . It achieved impressive technological and architectural feats, such as the empire-wide construction of aqueducts and roads , as well as more grandiose monuments and facilities. Archaeological evidence of settlement around Rome starts to emerge c.  1000 BC . Large-scale organisation appears only c.  800 BC , with

3052-497: A territory of some 780 square kilometres (300 square miles) with a population perhaps as high as 35,000. A palace, the Regia , was constructed c.  625 BC ; the Romans attributed the creation of their first popular organisations and the Senate to the regal period as well. Rome also started to extend its control over its Latin neighbours. While later Roman stories like the Aeneid asserted that all Latins descended from

3161-617: Is double-curved in both its horizontal and vertical planes may be called a dome dam . Arch dams with more than one contiguous arch or plane are described as multiple-arch dams . Early examples include the Roman Esparragalejo Dam with later examples such as the Daniel-Johnson Dam (1968) and Itaipu Dam (1982). However, as a result of the failure of the Gleno Dam shortly after it was constructed in 1923,

3270-502: Is 214 meters (702 ft) high and 1,314 meters (4,311 ft) long across its crest. It was completed in 1968 and put in service in 1970. Pensacola Dam was one of the last multiple arch types built in the United States. Its NRHP application states that this was because three dams of this type failed: (1) Gem Lake Dam, St. Francis Dam (California), Lake Hodges Dam (California). None of these failures were inherently caused by

3379-562: Is called the Kurit Dam . After 4 m (13 ft) was added to the dam in 1850, it became 64 m (210 ft) tall and remained the tallest dam in the world until the early 20th century. The Kurit Dam was of masonry design and built in a very narrow canyon. The canyon was so narrow that its crest length is only 44% of its height. The dam is still erect, even though part of its lower downstream face fell off. The Tibi Dam in Tibi , Spain

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3488-448: Is clear on there having been kings in Rome, attested in fragmentary 6th century BC texts. Long after the abolition of the Roman monarchy, a vestigial rex sacrorum was retained to exercise the monarch's former priestly functions. The Romans believed that their monarchy was elective, with seven legendary kings who were largely unrelated by blood. Evidence of Roman expansion is clear in the sixth century BC; by its end, Rome controlled

3597-403: Is made of concrete and placed in a V-shaped valley. The foundation or abutments for an arch dam must be very stable and proportionate to the concrete. There are two basic designs for an arch dam: constant-radius dams , which have constant radius of curvature, and variable-radius dams , which have both upstream and downstream curves that systematically decrease in radius below the crest. A dam that

3706-507: Is usually taken by historians as the beginning of Roman Empire. Officially, the government was republican, but Augustus assumed absolute powers. His reform of the government brought about a two-century period colloquially referred to by Romans as the Pax Romana . The Julio-Claudian dynasty was established by Augustus . The emperors of this dynasty were Augustus, Tiberius , Caligula , Claudius and Nero . The Julio-Claudians started

3815-689: The Historia Augusta give many accounts of his notorious extravagance. Elagabalus adopted his cousin Severus Alexander , as Caesar, but subsequently grew jealous and attempted to assassinate him. However, the Praetorian guard preferred Alexander, murdered Elagabalus, dragged his mutilated corpse through the streets of Rome, and threw it into the Tiber. Severus Alexander then succeeded him. Alexander waged war against many foes, including

3924-519: The comitia centuriata (centuriate assembly), which voted on matters of war and peace and elected men to the most important offices, and the comitia tributa (tribal assembly), which elected less important offices. In the 4th century BC, Rome had come under attack by the Gauls , who now extended their power in the Italian peninsula beyond the Po Valley and through Etruria. On 16 July 390 BC,

4033-665: The Praetorian Guard and his reforms in the military, creating a standing army with a fixed size of 28 legions, ensured his total control over the army. Compared with the Second Triumvirate's epoch, Augustus' reign as princeps was very peaceful, which led the people and the nobles of Rome to support Augustus, increasing his strength in political affairs. His generals were responsible for the field command, gaining such commanders as Marcus Vipsanius Agrippa , Nero Claudius Drusus and Germanicus much respect from

4142-700: The Roman naming conventions ) tried to align himself with the Caesarian faction. In 43 BC, along with Antony and Marcus Aemilius Lepidus , Caesar's best friend, he legally established the Second Triumvirate . Upon its formation, 130–300 senators were executed, and their property was confiscated, due to their supposed support for the Liberatores . In 42 BC, the Senate deified Caesar as Divus Iulius ; Octavian thus became Divi filius ,

4251-623: The Romans in France and it dates back to the 1st century BC. The dam was about 12 metres (39 ft) high and 18 metres (59 ft) in length. Its radius was about 14 m (46 ft), and it consisted of two masonry walls. The Romans built it to supply nearby Glanum with water. The Monte Novo Dam in Portugal was another early arch dam built by the Romans in 300 AD. It was 5.7 metres (19 ft) high and 52 m long (171 ft), with

4360-578: The U.S. Bureau of Reclamation . The entrance road leading to the dam is located in Hungry Horse . The purposes of the Hungry Horse Project authorized by law are irrigation, flood control , navigation, streamflow regulation, hydroelectric generation, and other beneficial uses such as recreation. However, no irrigation facilities were built and the project has no irrigation obligations. Hydroelectric power generation and flood control are

4469-807: The "five good emperors" Nerva , Trajan , Hadrian , Antoninus Pius and Marcus Aurelius . Trajan, Hadrian, Antoninus Pius and Marcus Aurelius were part of Italic families settled in Roman colonies outside of Italy: the families of Trajan and Hadrian had settled in Italica ( Hispania Baetica ), that of Antoninus Pius in Colonia Agusta Nemausensis ( Gallia Narbonensis ), and that of Marcus Aurelius in Colonia Claritas Iulia Ucubi (Hispania Baetica). The Nerva-Antonine dynasty came to an end with Commodus , son of Marcus Aurelius. Nerva abdicated and died in 98 AD, and

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4578-501: The $ 43.4 million dam construction contract to Morrison-Knudsen , General Construction Company, and Shea Company . The Guy F. Atkinson Company won the contract to divert the river during dam construction. Two timber companies, Wixson and Crowe and J. H. Trisdale, cleared seven thousand acres (2,800 ha) to make way for the reservoir. Construction officially began with a weekend of ceremonies in June 1948. In September 1949, workers poured

4687-588: The 143-meter double-curved Morrow Point Dam in Colorado, completed in 1968. By the late 20th century, arch dam design reached a relative uniformity in design around the world. Currently, the tallest arch dam in the world is the 305 metres (1,001 ft) Jingpin-I Dam in China , which was completed in 2013. The longest multiple arch with buttress dam in the world is the Daniel-Johnson Dam in Quebec , Canada . It

4796-663: The 2nd century BC, the Romans became the dominant people of the Mediterranean Sea . The conquest of the Hellenistic kingdoms brought the Roman and Greek cultures in closer contact and the Roman elite, once rural, became cosmopolitan. At this time Rome was a consolidated empire—in the military view—and had no major enemies. Foreign dominance led to internal strife. Senators became rich at the provinces ' expense; soldiers, who were mostly small-scale farmers, were away from home longer and could not maintain their land; and

4905-657: The 5th century AD. It encompasses the Roman Kingdom (753–509 BC), the Roman Republic (509–27 BC), and the Roman Empire (27 BC–476 AD) until the fall of the western empire. Ancient Rome began as an Italic settlement, traditionally dated to 753 BC, beside the River Tiber in the Italian Peninsula . The settlement grew into the city and polity of Rome, and came to control its neighbours through

5014-430: The Capitoline and expanding to the Forum Boarium located between the Capitoline and Aventine Hills . The Romans themselves had a founding myth , attributing their city to Romulus and Remus , offspring of Mars and a princess of the mythical city of Alba Longa . The sons, sentenced to death, were rescued by a wolf and returned to restore the Alban king and found a city. After a dispute, Romulus killed Remus and became

5123-420: The Carthaginian intercession, Messana asked Rome to expel the Carthaginians. Rome entered this war because Syracuse and Messana were too close to the newly conquered Greek cities of Southern Italy and Carthage was now able to make an offensive through Roman territory; along with this, Rome could extend its domain over Sicily . Carthage was a maritime power, and the Roman lack of ships and naval experience made

5232-427: The Eastern part of the Roman territories. However, Marius's partisans managed his installation to the military command, defying Sulla and the Senate . To consolidate his own power, Sulla conducted a surprising and illegal action: he marched to Rome with his legions, killing all those who showed support to Marius's cause. In the following year, 87 BC, Marius, who had fled at Sulla's march, returned to Rome while Sulla

5341-413: The Empire in 165–180 AD. From Nerva to Marcus Aurelius, the empire achieved an unprecedented status. The powerful influence of laws and manners had gradually cemented the union of the provinces. All the citizens enjoyed and abused the advantages of wealth. The image of a free constitution was preserved with decent reverence. The Roman senate appeared to possess the sovereign authority, and devolved on

5450-463: The Flavian period was the siege and destruction of Jerusalem in 70 AD by Titus . The destruction of the city was the culmination of the Roman campaign in Judea following the Jewish uprising of 66 AD. The Second Temple was completely demolished, after which Titus' soldiers proclaimed him imperator in honour of the victory. Jerusalem was sacked and much of the population killed or dispersed. Josephus claims that 1,100,000 people were killed during

5559-444: The Italian Alps , causing panic among Rome's Italian allies. The best way found to defeat Hannibal's purpose of causing the Italians to abandon Rome was to delay the Carthaginians with a guerrilla war of attrition, a strategy propounded by Quintus Fabius Maximus Verrucosus . Hannibal's invasion lasted over 16 years, ravaging Italy, but ultimately Carthage was defeated in the decisive Battle of Zama in October 202 BC. More than

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5668-411: The Mediterranean, Italy maintained a special status which made it domina provinciarum ("ruler of the provinces"), and – especially in relation to the first centuries of imperial stability – rectrix mundi ("governor of the world") and omnium terrarum parens ("parent of all lands"). The Flavians were the second dynasty to rule Rome. By 68 AD, the year of Nero's death, there

5777-406: The Middle East, including Anatolia , Levant , and parts of Mesopotamia and Arabia . That empire was among the largest empires in the ancient world, covering around 5 million square kilometres (1.9 million square miles) in AD 117, with an estimated 50 to 90 million inhabitants, roughly 20% of the world's population at the time. The Roman state evolved from an elective monarchy to

5886-416: The Senate, they were severely restricted in political power. The Senate squabbled perpetually, repeatedly blocked important land reforms and refused to give the equestrian class a larger say in the government. Violent gangs of the urban unemployed, controlled by rival Senators, intimidated the electorate through violence. The situation came to a head in the late 2nd century BC under the Gracchi brothers,

5995-402: The Swiss engineer and dam designer Alfred Stucky developed new calculation methods for arch dams, introducing the concept of elasticity during the construction of the Montsalvens arch dam in Switzerland, thereby improving the dam profile in the vertical direction by using a parabolic arch shape instead of a circular arch shape. Pensacola Dam , completed in the state of Oklahoma in 1940,

6104-500: The aid of Pyrrhus of Epirus in 281 BC, but this effort failed as well. The Romans secured their conquests by founding Roman colonies in strategic areas, thereby establishing stable control over the region. In the 3rd century BC Rome faced a new and formidable opponent: Carthage , the other major power in the Western Mediterranean. The First Punic War began in 264 BC, when the city of Messana asked for Carthage's help in their conflicts with Hiero II of Syracuse . After

6213-427: The architect Apollodorus of Damascus . He remodelled the Pantheon and extended the Circus Maximus . When Parthia appointed a king for Armenia without consulting Rome, Trajan declared war on Parthia and deposed the king of Armenia. In 115 he took the Northern Mesopotamian cities of Nisibis and Batnae , organised a province of Mesopotamia (116), and issued coins that claimed Armenia and Mesopotamia were under

6322-415: The arts and sciences, and bestowed honours and financial rewards upon the teachers of rhetoric and philosophy . On becoming emperor, Antoninus made few initial changes, leaving intact as far as possible the arrangements instituted by his predecessor. Antoninus expanded Roman Britannia by invading what is now southern Scotland and building the Antonine Wall . He also continued Hadrian's policy of humanising

6431-438: The authority of the Roman people. In that same year, he captured Seleucia and the Parthian capital Ctesiphon (near modern Baghdad ). After defeating a Parthian revolt and a Jewish revolt , he withdrew due to health issues, and in 117, he died of edema . Trajan's successor Hadrian withdrew all the troops stationed in Parthia, Armenia and Mesopotamia (modern-day Iraq ), abandoning Trajan's conquests. Hadrian's army crushed

6540-537: The changes to the calendar promoted by Caesar , and the month of August is named after him. Augustus brought a peaceful and thriving era to Rome, known as Pax Augusta or Pax Romana . Augustus died in 14 AD, but the empire's glory continued after his era. The Julio-Claudians continued to rule Rome after Augustus' death and remained in power until the death of Nero in 68 AD. Influenced by his wife, Livia Drusilla , Augustus appointed her son from another marriage, Tiberius , as his heir. The Senate agreed with

6649-418: The character Aeneas , a common culture is attested to archaeologically. Attested to reciprocal rights of marriage and citizenship between Latin cities—the Jus Latii —along with shared religious festivals, further indicate a shared culture. By the end of the 6th century, most of this area had become dominated by the Romans. By the end of the sixth century, Rome and many of its Italian neighbours entered

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6758-409: The city's sole founder. The area of his initial settlement on the Palatine Hill was later known as Roma Quadrata ("Square Rome"). The story dates at least to the third century BC, and the later Roman antiquarian Marcus Terentius Varro placed the city's foundation to 753 BC. Another legend, recorded by Greek historian Dionysius of Halicarnassus , says that Prince Aeneas led a group of Trojans on

6867-425: The construction of new multiple arch dams has become less popular. Contraction joints are normally placed every 20 m in the arch dam and are later filled with grout after the control cools and cures. Ancient Rome In modern historiography , ancient Rome is the Roman civilisation from the founding of the Italian city of Rome in the 8th century BC to the collapse of the Western Roman Empire in

6976-415: The dam has a clear span of 60 ft (18 m) and each buttress is 24 ft (7.3 m) wide. Arch dam designs would continue to test new limits and designs such as the double- and multiple-curve. Alfred Stucky and the U.S. Bureau of Reclamation developed a method of weight and stress distribution in the 1960s, and arch dam construction in the United States would see its last surge then with dams like

7085-785: The death of Tiberius, and, with belated support from the senators, proclaimed his uncle Claudius as the new emperor. Claudius was not as authoritarian as Tiberius and Caligula. Claudius conquered Lycia and Thrace ; his most important deed was the beginning of the conquest of Britannia . Claudius was poisoned by his wife, Agrippina the Younger in 54 AD. His heir was Nero , son of Agrippina and her former husband, since Claudius' son Britannicus had not reached manhood upon his father's death. Nero sent his general, Suetonius Paulinus , to invade modern-day Wales , where he encountered stiff resistance. The Celts there were independent, tough, resistant to tax collectors, and fought Paulinus as he battled his way across from east to west. It took him

7194-406: The destruction of republican values, but on the other hand, they boosted Rome's status as the central power in the Mediterranean region. While Caligula and Nero are usually remembered in popular culture as dysfunctional emperors, Augustus and Claudius are remembered as successful in politics and the military. This dynasty instituted imperial tradition in Rome and frustrated any attempt to reestablish

7303-433: The edict as a fundamental turning point, after which Rome was "effectively a new state masquerading under an old name". Macrinus conspired to have Caracalla assassinated by one of his soldiers during a pilgrimage to the Temple of the Moon in Carrhae, in 217 AD. Macrinus assumed power, but soon removed himself from Rome to the east and Antioch. His brief reign ended in 218, when the youngster Bassianus, high priest of

7412-401: The emperors all the executive powers of government. Gibbon declared the rule of these "Five Good Emperors" the golden era of the Empire. During this time, Rome reached its greatest territorial extent. Commodus , son of Marcus Aurelius, became emperor after his father's death. He is not counted as one of the Five Good Emperors, due to his direct kinship with the latter emperor; in addition, he

7521-462: The end of the Triumvirate, Antony was living in Ptolemaic Egypt , ruled by his lover, Cleopatra VII . Antony's affair with Cleopatra was seen as an act of treason, since she was queen of another country. Additionally, Antony adopted a lifestyle considered too extravagant and Hellenistic for a Roman statesman. Following Antony's Donations of Alexandria , which gave to Cleopatra the title of " Queen of Kings ", and to Antony's and Cleopatra's children

7630-492: The field. However, he became ill and died in 211 AD, at the age of 65. Upon the death of Severus, his sons Caracalla and Geta were made emperors. Caracalla had his brother, a youth, assassinated in his mother's arms, and may have murdered 20,000 of Geta's followers. Like his father, Caracalla was warlike. He continued Severus' policy and gained respect from the legions. Knowing that the citizens of Alexandria disliked him and were denigrating his character, Caracalla served

7739-428: The first concrete. The project eventually used 3 million cubic yards of concrete. Engineers adopted air-entrained concrete to reduce the effect of freeze-thaw cycles and to make the material more stable and workable. They also incorporated fly ash into the concrete mix. Hungry Horse was the first dam built with these innovations. The construction claimed the lives of 23 men. Construction was completed on July 18, 1953. At

7848-730: The first graves in the Esquiline Hill 's necropolis, along with a clay and timber wall on the bottom of the Palatine Hill dating to the middle of the 8th century BC. Starting from c.  650 BC , the Romans started to drain the valley between the Capitoline and Palatine Hills, where today sits the Roman Forum . By the sixth century BC, the Romans were constructing the Temple of Jupiter Optimus Maximus on

7957-521: The first of his seven consulships (an unprecedented number) in 107 BC by arguing that his former patron Quintus Caecilius Metellus Numidicus was not able to defeat and capture the Numidian king Jugurtha . Marius then started his military reform: in his recruitment to fight Jugurtha, he levied the very poor (an innovation), and many landless men entered the army. Marius was elected for five consecutive consulships from 104 to 100 BC, as Rome needed

8066-576: The first persecutor of Christians and for the Great Fire of Rome , rumoured to have been started by the emperor himself. A conspiracy against Nero in 65 AD under Calpurnius Piso failed, but in 68 AD the armies under Julius Vindex in Gaul and Servius Sulpicius Galba in modern-day Spain revolted. Deserted by the Praetorian Guards and condemned to death by the senate, Nero killed himself. As Roman provinces were being established throughout

8175-471: The first strike but could not withstand the attack of Scipio Aemilianus , who entirely destroyed the city, enslaved all the citizens and gained control of that region, which became the province of Africa . All these wars resulted in Rome's first overseas conquests (Sicily, Hispania and Africa) and the rise of Rome as a significant imperial power. After defeating the Macedonian and Seleucid Empires in

8284-474: The frontier legions to save them. The legions of three frontier provinces— Britannia , Pannonia Superior , and Syria —resented being excluded from the " donative " and replied by declaring their individual generals to be emperor. Lucius Septimius Severus Geta, the Pannonian commander, bribed the opposing forces, pardoned the Praetorian Guards and installed himself as emperor. He and his successors governed with

8393-477: The imperial dignity. Pertinax, a member of the senate who had been one of Marcus Aurelius's right-hand men, was the choice of Laetus, and he ruled vigorously and judiciously. Laetus soon became jealous and instigated Pertinax's murder by the Praetorian Guard, who then auctioned the empire to the highest bidder, Didius Julianus, for 25,000 sesterces per man. The people of Rome were appalled and appealed to

8502-433: The increased reliance on foreign slaves and the growth of latifundia reduced the availability of paid work. Income from war booty, mercantilism in the new provinces, and tax farming created new economic opportunities for the wealthy, forming a new class of merchants, called the equestrians . The lex Claudia forbade members of the Senate from engaging in commerce, so while the equestrians could theoretically join

8611-798: The laws. He died in 161 AD. Marcus Aurelius , known as the Philosopher, was the last of the Five Good Emperors . He was a stoic philosopher and wrote the Meditations . He defeated barbarian tribes in the Marcomannic Wars as well as the Parthian Empire . His co-emperor, Lucius Verus , died in 169 AD, probably from the Antonine Plague , a pandemic that killed nearly five million people through

8720-693: The legions' support. The changes on coinage and military expenditures were the root of the financial crisis that marked the Crisis of the Third Century . Severus was enthroned after invading Rome and having Didius Julianus killed. Severus attempted to revive totalitarianism and, addressing the Roman people and Senate, praised the severity and cruelty of Marius and Sulla, which worried the senators. When Parthia invaded Roman territory, Severus successfully waged war against that country. Notwithstanding this military success, Severus failed in invading Hatra ,

8829-401: The multiple arch design. The design of an arch dam is a very complex process. It starts with an initial dam layout, that is continually improved until the design objectives are achieved within the design criteria. The main loads for which an arch dam is designed are: Other miscellaneous loads that affect a dam include: ice and silt loads, and uplift pressure. Most often, the arch dam

8938-549: The path to the victory a long and difficult one for the Roman Republic . Despite this, after more than 20 years of war, Rome defeated Carthage and a peace treaty was signed. Among the reasons for the Second Punic War was the subsequent war reparations Carthage acquiesced to at the end of the First Punic War. The war began with the audacious invasion of Hispania by Hannibal , who marched through Hispania to

9047-770: The populace and the legions. Augustus intended to extend the Roman Empire to the whole known world, and in his reign, Rome conquered Cantabria , Aquitania , Raetia , Dalmatia , Illyricum and Pannonia . Under Augustus' reign, Roman literature grew steadily in what is known as the Golden Age of Latin Literature . Poets like Virgil , Horace , Ovid and Rufus developed a rich literature, and were close friends of Augustus. Along with Maecenas , he sponsored patriotic poems, such as Virgil's epic Aeneid and historiographical works like those of Livy . Augustus continued

9156-413: The primary purposes of the dam. The dam, reservoir, and surrounding area are used for recreation. At 564 feet (172 m) in height, the dam was the third largest and second highest concrete dam in the world at the time of its completion in 1953, with a volume of 3,100,000 cubic yards (2,400,000 m). The dam's spillway is the highest morning glory structure in the world. The spillway is controlled by

9265-400: The regal titles to the newly conquered Eastern territories, war between Octavian and Antony broke out . Octavian annihilated Egyptian forces in the Battle of Actium in 31 BC. Antony and Cleopatra committed suicide . Now Egypt was conquered by the Roman Empire. In 27 BC and at the age of 36, Octavian was the sole Roman leader. In that year, he took the name Augustus . That event

9374-551: The revitalised Persia and also the Germanic peoples , who invaded Gaul. His losses generated dissatisfaction among his soldiers, and some of them murdered him during his Germanic campaign in 235 AD. A disastrous scenario emerged after the death of Alexander Severus : the Roman state was plagued by civil wars, external invasions , political chaos, pandemics and economic depression . The old Roman values had fallen, and Mithraism and Christianity had begun to spread through

9483-753: The siege, of whom a majority were Jewish. 97,000 were captured and enslaved , including Simon bar Giora and John of Giscala . Many fled to areas around the Mediterranean. Vespasian was a general under Claudius and Nero and fought as a commander in the First Jewish-Roman War . Following the turmoil of the Year of the Four Emperors , in 69 AD, four emperors were enthroned in turn: Galba , Otho , Vitellius , and, lastly, Vespasian, who crushed Vitellius' forces and became emperor. He reconstructed many buildings which were uncompleted, like

9592-497: The son of the deified. In the same year, Octavian and Antony defeated both Caesar's assassins and the leaders of the Liberatores , Marcus Junius Brutus and Gaius Cassius Longinus , in the Battle of Philippi . The Second Triumvirate was marked by the proscriptions of many senators and equites : after a revolt led by Antony's brother Lucius Antonius , more than 300 senators and equites involved were executed, although Lucius

9701-505: The stronger, curved lower arches near the abutments. The dam also had a larger toe, which off-set pressure on the upstream heel of the dam, which now curved more downstream. The technology and economical benefits of the Salmon Creek Dam allowed for larger and taller dam designs. The dam was, therefore, revolutionary, and similar designs were soon adopted around the world, in particular by the U.S. Bureau of Reclamation . In 1920,

9810-515: The structural height (b/h) as: Arch dams classified with respect to their structural height are: The development of arch dams throughout history began with the Romans in the 1st century BC and after several designs and techniques were developed, relative uniformity was achieved in the 20th century. The first known arch dam, the Glanum Dam , also known as the Vallon de Baume Dam, was built by

9919-520: The succession, and granted to Tiberius the same titles and honours once granted to Augustus: the title of princeps and Pater patriae , and the Civic Crown . However, Tiberius was not an enthusiast for political affairs: after agreement with the Senate, he retired to Capri in 26 AD, and left control of the city of Rome in the hands of the praetorian prefect Sejanus (until 31 AD) and Macro (from 31 to 37 AD). Tiberius died (or

10028-429: The support of the people) and optimates (the "best", who wanted to maintain exclusive aristocratic control). Sulla overthrew all populist leaders and his constitutional reforms removed powers (such as those of the tribune of the plebs ) that had supported populist approaches. Meanwhile, social and economic stresses continued to build; Rome had become a metropolis with a super-rich aristocracy, debt-ridden aspirants, and

10137-485: The supreme deity in Roman religion . He was murdered following a plot within his own household. Following Domitian's murder, the Senate rapidly appointed Nerva as Emperor. Nerva had noble ancestry, and he had served as an advisor to Nero and the Flavians. His rule restored many of the traditional liberties of Rome's upper classes, which Domitian had over-ridden. The Nerva–Antonine dynasty from 96 AD to 192 AD included

10246-448: The temple of the Sun at Emesa, and supposedly illegitimate son of Caracalla, was declared Emperor by the disaffected soldiers of Macrinus. He adopted the name of Antoninus but history has named him after his Sun god Elagabalus , represented on Earth in the form of a large black stone. An incompetent and lascivious ruler, Elagabalus offended all but his favourites. Cassius Dio , Herodian and

10355-464: The tribes of modern-day East Anglia staged a revolt led by queen Boadicea of the Iceni . The rebels sacked and burned Camulodunum , Londinium and Verulamium (modern-day Colchester , London and St Albans respectively) before they were crushed by Paulinus . Boadicea, like Cleopatra before her, committed suicide to avoid the disgrace of being paraded in triumph in Rome. Nero is widely known as

10464-490: The tribes of modern-day Scotland. Hadrian promoted culture, especially the Greek. He forbade torture and humanised the laws. His many building projects included aqueducts, baths, libraries and theatres; additionally, he travelled nearly every province in the Empire to review military and infrastructural conditions. Following Hadrian's death in 138 AD, his successor Antoninus Pius built temples, theatres, and mausoleums, promoted

10573-575: The weighing noticed that the Gauls were using false scales. The Romans then took up arms and defeated the Gauls. Their victorious general Camillus remarked "With iron, not with gold, Rome buys her freedom." The Romans gradually subdued the other peoples on the Italian peninsula, including the Etruscans . The last threat to Roman hegemony in Italy came when Tarentum , a major Greek colony, enlisted

10682-657: Was Josephus' sponsor and Pliny dedicated his Naturalis Historia to Titus, son of Vespasian. Vespasian sent legions to defend the eastern frontier in Cappadocia , extended the occupation in Britannia (modern-day England, Wales and southern Scotland ) and reformed the tax system. He died in 79 AD. Titus became emperor in 79. He finished the Flavian Amphitheater, using war spoils from the First Jewish-Roman War, and hosted victory games that lasted for

10791-543: Was a post-medieval arch dam built between 1579 and 1594 and the first in Europe since the Romans. The dam was 42.7 metres (140 ft) high and 65 metres (213 ft) long. This arch dam rests on the mountains sides. In the early 20th century, the world's first variable-radius arch dam was built on the Salmon Creek near Juneau , Alaska . The Salmon Creek Dam's upstream face bulged upstream, which relieved pressure on

10900-476: Was appointed to command the army together with Lucius Julius Caesar and Lucius Cornelius Sulla . By the end of the Social War, Marius and Sulla were the premier military men in Rome and their partisans were in conflict, both sides jostling for power. In 88 BC, Sulla was elected for his first consulship and his first assignment was to defeat Mithridates VI of Pontus , whose intentions were to conquer

11009-506: Was campaigning in Greece. He seized power along with the consul Lucius Cornelius Cinna and killed the other consul, Gnaeus Octavius , achieving his seventh consulship. Marius and Cinna revenged their partisans by conducting a massacre. Marius died in 86 BC, due to age and poor health, just a few months after seizing power. Cinna exercised absolute power until his death in 84 BC. After returning from his Eastern campaigns, Sulla had

11118-426: Was considered the longest multiple arch dam in the United States. Designed by W. R. Holway , it has 51 arches. and a maximum height of 150 ft (46 m) above the river bed. The total length of the dam and its sections is 6,565 ft (2,001 m) while the multiple-arch section is 4,284 ft (1,306 m) long and its combination with the spillway sections measure 5,145 ft (1,568 m). Each arch in

11227-497: Was killed) in 37 AD. The male line of the Julio-Claudians was limited to Tiberius' nephew Claudius , his grandson Tiberius Gemellus and his grand-nephew Caligula . As Gemellus was still a child, Caligula was chosen to rule the empire. He was a popular leader in the first half of his reign, but became a crude and insane tyrant in his years controlling government. The Praetorian Guard murdered Caligula four years after

11336-532: Was militarily passive. Cassius Dio identifies his reign as the beginning of Roman decadence : "(Rome has transformed) from a kingdom of gold to one of iron and rust." Commodus was killed by a conspiracy involving Quintus Aemilius Laetus and his wife Marcia in late 192 AD. The following year is known as the Year of the Five Emperors , during which Helvius Pertinax , Didius Julianus , Pescennius Niger , Clodius Albinus and Septimius Severus held

11445-570: Was no chance of a return to the Roman Republic , and so a new emperor had to arise. After the turmoil in the Year of the Four Emperors , Titus Flavius Vespasianus (anglicised as Vespasian) took control of the empire and established a new dynasty. Under the Flavians, Rome continued its expansion, and the state remained secure. Under Trajan, the Roman Empire reached the peak of its territorial expansion. Rome's dominion now spanned 5.0 million square kilometres (1.9 million square miles). The most significant military campaign undertaken during

11554-554: Was now pre-eminent over Rome: in five years he held four consulships, two ordinary dictatorships, and two special dictatorships, one for perpetuity. He was murdered in 44 BC, on the Ides of March by the Liberatores . Caesar's assassination caused political and social turmoil in Rome; the city was ruled by his friend and colleague, Marcus Antonius . Soon afterward, Octavius , whom Caesar adopted through his will, arrived in Rome. Octavian (historians regard Octavius as Octavian due to

11663-557: Was spared. The Triumvirate divided the Empire among the triumvirs: Lepidus was given charge of Africa , Antony, the eastern provinces, and Octavian remained in Italia and controlled Hispania and Gaul . The Second Triumvirate expired in 38 BC but was renewed for five more years. However, the relationship between Octavian and Antony had deteriorated, and Lepidus was forced to retire in 36 BC after betraying Octavian in Sicily . By

11772-482: Was succeeded by the general Trajan . Trajan is credited with the restoration of traditional privileges and rights of commoner and senatorial classes, which later Roman historians claim to have been eroded during Domitian's autocracy. Trajan fought three Dacian wars , winning territories roughly equivalent to modern-day Romania and Moldova . He undertook an ambitious public building program in Rome, including Trajan's Forum , Trajan's Market and Trajan's Column , with

11881-405: Was uprated in the 1990s to 107,000 kilowatts each for a total capacity of 428 megawatts. Nearby and downstream, an aluminum production plant was constructed in the mid-1950s, northeast of Columbia Falls . The Hungry Horse Reservoir is fed by a number of smaller creeks and streams, including: Arch dam In general, arch dams are classified based on the ratio of the base thickness to

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