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70-524: Lake George 61°15′00″N 148°37′00″W  /  61.25000°N 148.61667°W  / 61.25000; -148.61667 , a glacial lake formed near the face of the glacier, received national recognition by the National Natural Landmark (NNL) Program. Lake George was recognized because of a unique natural phenomenon called a " jökulhlaup ", an Icelandic term for glacial lake outburst flood . The breakup of this ice dam would send

140-537: A barge commanded by Lt. W.A. Hall, who was designated prize master, and had brought 18 sailors and 15 Marines from the barracks at Sumay . Seeing a launch from Cormoran hauling a barge of supplies back shore, Hall ordered shots fired across the bow of the launch until it hove to. Meanwhile, the two officers reached Cormoran and informed Captain Adalbert Zuckschwerdt of the situation. Zuckschwerdt agreed to surrender his crew but refused to turn over

210-430: A better experience for hotel guests. Tumon Bay has since been made into a preserve. A federal Guam National Wildlife Refuge in northern Guam protects the decimated sea turtle population in addition to a small colony of Mariana fruit bats . Harvest of sea turtle eggs was a common occurrence on Guam before World War II. The green sea turtle ( Chelonia mydas ) was harvested legally on Guam before August 1978, when it

280-454: A plateau. The rugged south of the island is a result of more recent volcanic activity. Cocos Island off the southern tip of Guam is the largest of the many small islets along the coastline. Guam's highest point is Mount Lamlam at 1,334 feet (407 meters) above sea level. If its base is considered to be the nearby Challenger Deep , the deepest surveyed point in the Oceans , Mount Lamlam

350-502: A remnant of pre-European culture. It is believed that " suruhånu " or " suruhåna " are the only ones who can safely harvest plants and other natural materials from their homes or " hålomtåno " without incurring the wrath of the " Taotao mo'na ." Their society was organized along matrilineal clans. The Chamorro people raised colonnades of megalithic capped pillars called latte stones upon which they built their homes. Latte stones are stone pillars that are found only in

420-482: A resurgence of interest among the Chamorro to preserve the language and culture. Hispanic influences are manifested in the local language, music, dance, sea navigation, cuisine, fishing, games (such as batu , chonka , estuleks , and bayogu ), songs, and fashion. The island's original community are Chamorro natives, who have inhabited Guam for almost 4000 years. They had their own language related to

490-704: A site must be one of the best examples of a natural region's characteristic biotic or geologic features. Since the establishment of the NNL program, a multi-step process has been used to designate a site for NNL status. Since 1970, the following steps have constituted the process. Prospective sites for NNL designation are terrestrial and aquatic ecosystems; geological features, exposures, and landforms that record active geological processes or portions of earth history; and fossil evidence of biological evolution. Each major natural history "theme" can be further subdivided into various sub-themes. For example, sub-themes suggested in 1972 for

560-424: A violent wall of water, ice and debris down the river valley causing massive flooding and sometimes devastation to local settlers' properties. The jökulhlaup occurred annually until it ceased in 1967 due to glacial recession, thought to be associated with the massive Good Friday earthquake of 1964. Early pioneers were said to hold a yearly lottery, gambling on the exact date when the jökulhlaup would break and flood

630-513: Is 86 °F or 30 °C. The mean low is 76 °F (24.4 °C). Temperatures rarely exceed 90 °F (32.2 °C) or fall below 70 °F (21.1 °C). The relative humidity commonly exceeds 84 percent at night throughout the year, but the average monthly humidity hovers near 66 percent. The highest temperature ever recorded in Guam was 96 °F (35.6 °C) on April 18, 1971, and April 1, 1990. A record low of 69 °F (21 °C)

700-552: Is a non-voting member. They do, however, vote for party delegates in presidential primaries. In 1969, a referendum on unification with the Northern Mariana Islands was held and rejected. During the 1970s, Maryly Van Leer Peck started an engineering program, expanded University of Guam , and founded Guam Community College . In the same period, Alby Mangels , Australian adventurer and filmmaker of World Safari visited Guam during his six-year escapade on

770-644: Is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean . Guam's capital is Hagåtña , and the most populous village is Dededo . It is the westernmost point and territory of the United States, reckoned from the geographic center of the U.S. In Oceania , Guam is the largest and southernmost of the Mariana Islands and the largest island in Micronesia . As of 2022, its population

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840-482: Is generally hot and humid throughout the year with little seasonal temperature variation. Guam is known to have equable temperatures year-round. Trade winds are fairly constant throughout the year. There is often a weak westerly monsoon influence in the summer months. Guam has two distinct seasons: Wet and dry season. The dry season runs from January through May. June is the transitional period. The wet season runs from July through November. Guam's average annual rainfall

910-626: Is located on the micro Mariana Plate between the two. Guam is the closest land mass to the Mariana Trench , the deep subduction zone that runs east of the Marianas. Volcanic eruptions established the base of the island in the Eocene , roughly 56 to 33.9 million years ago. The north of Guam is a result of this base being covered with layers of coral reef , turning into limestone , and then being thrust upward by tectonic activity to create

980-468: Is the 32nd largest island of the United States . It is the southernmost and largest island in the Mariana Islands , as well as the largest in Micronesia . Guam's Point Udall is the westernmost point of the U.S. , as measured from the geographic center of the United States . The Mariana chain of which Guam is a part, was created by collision of the Pacific and Philippine Sea tectonic plates . Guam

1050-406: Is the world's tallest mountain at 37,820 feet (11,530 m). Politically, Guam is divided into 19 villages . The majority of the population lives on the coralline limestone plateaus of the north, with political and economic activity centered in the central and northern regions. The rugged geography of the south largely limits settlement to rural coastal areas. The western coast is leeward of

1120-555: The SMS Cormoran (or SMS Cormoran II ), a German armed merchant raider , was forced to seek port at Apra Harbor on the U.S. territory of Guam after running short on coal. The United States, which was neutral at the time refused to supply provisions sufficient for the Cormoran to make a German port so the ship and her crew were interned until 1917. On the morning of April 7, 1917, word reached Guam by telegraph cable that

1190-532: The Caroline Islands , victims of a resultant tsunami . This earthquake was much more powerful than the 8.2 one that occurred on August 8, 1993. After a smallpox epidemic killed 3,644 Guamanians in 1856, Carolinians and Japanese were permitted to settle in the Marianas. After almost four centuries as part of the Kingdom of Spain , the United States occupied the island following Spain's defeat in

1260-582: The Chamorro language is not classified as a Micronesian or Polynesian language. Rather, like Palauan , it possibly constitutes an independent branch of the Malayo-Polynesian language family . The Chamorro people settled Guam and the Mariana islands approximately 3,500 years ago. Portuguese explorer Ferdinand Magellan , while in the service of Spain, was the first European to visit and claim

1330-488: The Empire of Japan attacked and invaded in the 1941 Battle of Guam on December 8, at the same time as the attack on Pearl Harbor . The Japanese renamed Guam Ōmiya-jima (Great Shrine Island). The Japanese occupation of Guam lasted about 31 months. During this period, the indigenous people of Guam were subjected to beatings, forced labor, family separation, concentration camps, massacres, beheadings and rape. During

1400-642: The Guam Organic Act of 1950 established Guam as an unincorporated organized territory of the United States , provided for the structure of the island's civilian government, and granted the people U.S. citizenship. The Governor of Guam was federally appointed until 1968 when the Guam Elective Governor Act provided for the office's popular election. Since Guam is not a U.S. state, U.S. citizens residing on Guam are not allowed to vote for president and their congressional representative

1470-578: The Historic Sites Act of August 21, 1935 (49 Stat. 666, 16 U.S.C. 641); the program is governed by federal regulations. The NNL Program does not have the protection features of Section 106 of the National Historic Preservation Act of 1966. Thus, the designation of a National Natural Landmark presently constitutes only an agreement with the owner to preserve, as far as possible, the significant natural values of

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1540-822: The National Park Service , U.S. Forest Service , Bureau of Land Management , Bureau of Reclamation , Fish and Wildlife Service , Air Force , Marine Corps , Army Corps of Engineers , Navy , and others. Some NNLs has been designated on lands held by Native Americans or tribes. NNLs also have been designated on state lands that cover a variety of types and management, such as forest , park , game refuge , recreation area , and preserve. Private lands with NNLs include those owned by universities, museums , scientific societies, conservation organizations, land trusts , commercial interests, and private individuals. Approximately 52% of NNLs are administered by public agencies, more than 30% are entirely privately owned, and

1610-690: The Spanish East Indies , and part of the Viceroyalty of New Spain , based in Mexico City . The Spanish-Chamorro Wars on Guam began in 1670 over growing tensions with the Jesuit mission, with the last large-scale uprising in 1683. Intermittent warfare, plus the typhoons of 1671 and 1693, and in particular the smallpox epidemic of 1688, reduced the Chamorro population from 50,000 to 10,000, and finally to less than 5,000. Up until

1680-493: The U.S. Congress had declared war on Germany . The Naval Governor of Guam , Roy Campbell Smith , sent two officers to inform the Cormoran that a state of war existed between the two countries, that the crew were now prisoners of war , and that the ship must be surrendered. Meanwhile, the USS Supply blocked the entrance to Apra Harbor to prevent any attempt to flee. In a separate boat, the two officers were accompanied by

1750-496: The U.S. military , for which Guam is a major strategic asset. Its future political status has been a matter of significant discussion, with public opinion polls indicating a strong preference for American statehood . Guam's de facto motto is "Where America's Day Begins", which refers to the island's proximity to the International Date Line . Guam is among the 17 non-self-governing territories listed by

1820-573: The geological and ecological history of the United States. It also hopes to strengthen the public's appreciation of the country's natural heritage. As of July 2024, 605 sites have been added to the National Registry of Natural Landmarks. The registry includes nationally significant geological and ecological features in 48 states, American Samoa , Guam , Puerto Rico , and the U.S. Virgin Islands . The National Park Service administers

1890-457: The trade winds and is the location of Apra Harbor , the capital Hagåtña , and the tourist center of Tumon . The U.S. Defense Department owns about 29% of the island, under the management of Joint Region Marianas . Guam has a tropical rainforest climate on the Köppen scale (Köppen Af ). Its driest month of March almost qualifies as a tropical monsoon climate (Köppen Am ). The weather

1960-759: The 1898 Spanish–American War , as part of the Treaty of Paris of 1898 . Guam was transferred to the United States Navy control on December 23, 1898, by Executive Order 108-A from 25th President William McKinley . Guam was a station for American merchants and warships traveling to and from the Philippines , which was another American acquisition from Spain, while the Northern Mariana Islands were sold by Spain to Germany for part of its rapidly expanding German Empire . A U.S. Navy yard

2030-486: The 1990s also disrupted the island's economy. Economic recovery was further hampered by devastation from super typhoons Paka in 1997 and Pongsona in 2002, as well as the effects of the September 11 terrorist attacks and the crash of Korean Air Flight 801 on tourism. Guam is 30.17 miles (48.55 kilometers) long and 4 to 12 miles (6 to 19 kilometers) wide. It has an area of 212 square miles (549 square kilometers). It

2100-709: The American period include the Typhoon of 1900 , Karen (1962), Pamela (1976), Paka (1997), Pongsona (2002), and Mawar (2023). Since Typhoon Pamela in 1976, wooden structures have been largely replaced by concrete structures. During the 1980s, wooden utility poles began to be replaced by typhoon-resistant concrete and steel poles. After the local Government enforced stricter construction codes, many home and business owners have built their structures out of reinforced concrete with installed typhoon shutters . Guam has experienced severe effects of invasive species upon

2170-466: The Department of Agriculture, Division of Aquatic and Wildlife Resources has established several new marine preserves where fish populations are monitored by biologists. These are located at Pati Point , Piti Bomb Holes , Sasa Bay , Achang Reef Flat, and Tumon Bay . Before adopting U.S. Environmental Protection Agency standards, portions of Tumon Bay were dredged by the hotel chains to provide

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2240-660: The Knik River Valley. The flooding would often close vital transportation routes between Anchorage and the Matanuska-Susitna Valley . In 1991, Paramount Pictures used Knik Glacier to film a portion of Star Trek VI: The Undiscovered Country . Knik Glacier was the setting for a scene in which Captain Kirk and Dr McCoy are rescued from the Klingon ice planet prison Rura Penthe. It is also featured as

2310-619: The Mariana Islands. They are a recent development in Pre-Contact Chamorro society. The latte-stone was used as a foundation on which thatched huts were built. Latte stones consist of a base shaped from limestone called the haligi and with a capstone, or tåsa , made either from a large brain coral or limestone, placed on top. A possible source for these stones, the Rota Latte Stone Quarry ,

2380-582: The NNL Program and, if requested, assists NNL owners and managers with the conservation of these important sites. Land acquisition by the federal government is not a goal of this program. National Natural Landmarks are nationally significant sites owned by a variety of land stewards, and their participation in this federal program is voluntary. The legislative authority for the National Natural Landmarks Program stems from

2450-596: The Northern Mariana Islands, the only Spanish outposts in the Pacific Ocean east of the Philippines, were reprovisioning stops for the Manila galleons , a fleet that covered the Pacific trade route between Acapulco and Manila . Spanish colonization commenced on June 15, 1668, with the arrival of a mission led by Diego Luis de San Vitores , who established the first Catholic church. The islands were part of

2520-632: The Pacific Ocean, along with Wake Island in Micronesia, American Samoa and Hawaii in Polynesia, and the Philippines. On December 8, 1941, hours after the attack on Pearl Harbor , Guam was captured by the Japanese , who occupied the island for two and a half years before American forces recaptured it on July 21, 1944, which is commemorated there as Liberation Day . Since the 1960s, Guam's economy has been supported primarily by tourism and

2590-481: The Philippines or eastern Indonesia , by 900 AD. These original settlers of Guam and the Northern Mariana Islands evolved into the Chamorro people , historically known as Chamorros after first contact with the Spaniards. The ancient Chamorro society had four classes: chamorri (chiefs), matua (upper class), achaot (middle class), and mana'chang (lower class). The matua were located in

2660-593: The United Nations , and has been a member of the Pacific Community since 1983. Guam is called Guåhan by Chamorro speakers, from the word guaha , meaning 'to have'; its English gloss 'we have' references the island's providing everything needed to live. Guam, along with the Mariana Islands , were the first islands settled by humans in Remote Oceania . It was also the first and

2730-401: The backdrop for Lauren Daigle 's video on her song Rescue . The glacier is a tourist attraction, sharing its natural beauty with locals and visitors from around the world. With several tour companies operating in the area, visitors can view the glacier by air via a flightseeing company, all-terrain vehicle , jetboat , airboat charter, or on a guided packrafting tour. The Knik Glacier and

2800-604: The beginning of the Knik River are managed under the Knik River Public Use Area (KRPUA) Management Plan. The KRPUA is a legislatively designated area managed by the State of Alaska's Department of Natural Resources (DNR), Division of Mining, Land, and Water, Southcentral Regional Office. On the 27th of March 2021, a heli-skiing crash occurred in the south of the glacier, killing 5 of the 6 on board. Among

2870-556: The coastal villages, which meant they had the best access to fishing grounds. The mana'chang were located in the island's interior. Matua and mana'chang rarely communicated with each other. The matua often used achaot as intermediaries. There were also " makåhna " or " kakahna ", shamans with magical powers and "' suruhånu " or " suruhåna ", healers who used different kinds of plants and natural materials to make medicine. Belief in spirits of ancient Chamorros called " Taotao mo'na " still persists as

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2940-601: The conservation of outstanding examples of the natural history of the United States . It is the only national natural areas program that identifies and recognizes the best examples of biological and geological features in both public and private ownership. The program was established on May 18, 1962, by United States Secretary of the Interior Stewart Udall . The program aims to encourage and support voluntary preservation of sites that illustrate

3010-673: The dead was the businessman entrepreneur Petr Kellner , who at the time of his death was the wealthiest person in the Czech Republic. This article about a glacier in Alaska is a stub . You can help Misplaced Pages by expanding it . This article about a location in the Chugach Census Area, Alaska is a stub . You can help Misplaced Pages by expanding it . National Natural Landmark The National Natural Landmarks ( NNL ) Program recognizes and encourages

3080-516: The designation. It is conceivable that state or local governments of their own volition could initiate regulations or zoning that might apply to an NNL. However, as of 2005 no examples of such a situation have been identified. Some states require planners to ascertain the location of NNLs. Listed by state or territory in alphabetical order. As of July 2024, there were 605 listings. Guam Guam ( / ˈ ɡ w ɑː m / GWAHM ; Chamorro : Guåhan [ˈɡʷɑhɑn] )

3150-482: The island on March 6, 1521. Guam was fully colonized by Spain in 1668. Between the 16th and 18th centuries, Guam was an important stopover for Spanish Manila galleons . During the Spanish–American War , the United States captured Guam on June 21, 1898. Under the 1898 Treaty of Paris , Spain ceded Guam to the U.S. effective April 11, 1899. Before World War II , Guam was one of five American jurisdictions in

3220-484: The island. The estimated interracial marriage rate is over 40%. The official languages of the island are English and Chamorro . Unlike most of its neighboring languages, Chamorro is not classified as Micronesian or Polynesian . Rather, like Palauan , it possibly constitutes an independent branch of the Malayo-Polynesian language family . Filipino is also commonly spoken across the island. Other Pacific and Asian languages are spoken in Guam as well. Spanish , which

3290-439: The languages of Indonesia and southeast Asia. The Spanish later called them Chamorros. A derivative of the word, Chamorri, means "noble race". They began to grow rice on the island. Historically, the native people of Guam venerated the bones of their ancestors. They kept the skulls in their houses in small baskets, and practiced incantations before them when it was desired to attain certain objects. During Spanish rule (1668–1898)

3360-455: The late 19th century, Guam was encountered by adventurers and pirates, including Thomas Cavendish , Olivier van Noort , John Eaton , William Dampier , Woodes Rogers , John Clipperton , George Shelvocke and William "Bully" Hayes . The island became a rest stop for whalers starting in 1823. A devastating typhoon struck the island on August 10, 1848, followed by a severe earthquake on January 25, 1849, which resulted in many refugees from

3430-613: The leg of his voyage through the Pacific aboard the Klaraborg . The removal of Guam's security clearance by President John F. Kennedy in 1963 allowed for the development of a tourism industry. When the United States closed U.S. Naval Base Subic Bay and Clark Air Base bases in the Philippines after the expiration of their leases in the early 1990s, many of the forces stationed there were relocated to Guam. The 1997 Asian financial crisis , which hit Japan particularly hard, severely affected Guam's tourism industry. Military cutbacks in

3500-479: The longest of the ocean-crossing voyages of the Austronesian peoples , and is separate from the later Polynesian settlement of the rest of Remote Oceania. They were first settled around 1500 to 1400 BC, by migrants departing from the Philippines which was followed by a second migration from the Caroline Islands in the first millennium AD. A third migration wave took place from Island Southeast Asia , likely

3570-534: The marine life in reefs around the island. Soil stabilization efforts by volunteers and forestry workers (planting trees) have had little success in preserving natural habitats. Efforts have been made to protect Guam's coral reef habitats from pollution, eroded silt and overfishing, problems that have led to decreased fish populations. This has both ecological and economic value, as Guam is a significant vacation spot for scuba divers , and one study found that Guam's reefs are worth $ 127 million per year. In recent years,

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3640-510: The natural biodiversity of the island. These include the local extinction of endemic bird species after the introduction of the brown tree snake , an infestation of the coconut rhinoceros beetle destroying coconut palms, and the effect of introduced feral mammals and amphibians . Wildfires plague the forested areas of Guam every dry season despite the island's humid climate. Most fires are caused by humans with 80% resulting from arson . Poachers often start fires to attract deer to

3710-431: The nearly three years of occupation approximately 1,100 Chamorros were killed, according to later US Congressional committee testimony in 2004. Some historians estimate that war violence killed 10% of Guam's then 20,000 population. The United States returned and fought the 1944 Battle of Guam from July 21 to August 10, to recapture the island. July 21 is now a territorial holiday, Liberation Day . After World War II,

3780-492: The new growth. Invasive grass species that rely on fire as part of their natural life cycle grow in many regularly burned areas. Grasslands and "barrens" have replaced previously forested areas leading to greater soil erosion. During the rainy season, sediment is carried by the heavy rains into the Fena Lake Reservoir and Ugum River , leading to water quality problems for southern Guam. Eroded silt also destroys

3850-647: The overall theme "Lakes and ponds" included large deep lakes, large shallow lakes, lakes of complex shape, crater lakes , kettle lake and potholes, oxbow lakes , dune lakes, sphagnum-bog lakes, lakes fed by thermal streams, tundra lakes and ponds, swamps and marshy areas , sinkhole lakes, unusually productive lakes, and lakes of high productivity and high clarity. The NNL program does not require designated properties to be owned by public entities. Lands under almost all forms of ownership or administration have been designated—federal, state, local, municipal, and private. Federal lands with NNLs include those administered by

3920-485: The population was Catholic, with 54 priests and 64 nuns across 27 parishes. The culture of Guam is a reflection of traditional Chamorro customs, in combination with American, Spanish and Mexican traditions. Post-European-contact Chamorro Guamanian culture is a combination of American, Spanish, Filipino, other Micronesian Islander and Mexican traditions. Few indigenous pre-Hispanic customs remained following Spanish contact, but include plaiting and pottery. There has been

3990-482: The population. Asians , including Filipinos, Koreans, Chinese, and Japanese, accounted for 35.5% of the population. Other ethnic groups of Micronesia , including those of Chuukese , Palauan , and Pohnpeians , accounted for 13.2%. 10% of the population were multiracial , (two or more races). European Americans made up 6.8% of the population; 1% are African Americans , and 3% are Hispanic ; there are 1,740 Mexicans in Guam, and there are other Hispanic ethnicities on

4060-532: The property nor induce any encumbrances on the property. NNL status does not transfer with changes in ownership. Participation in the NNL Program involves a voluntary commitment on the part of the landowner(s) to retain the integrity of their NNL property as it was when designated. If "major" habitat or landscape destruction is planned, participation in the NNL Program by a landowner would be disingenuous and meaningless. The federal action of designation imposes no new land use restrictions that were not in effect before

4130-483: The remaining 18% are owned or administered by a mixture of public agencies and private owners. Participation in the NNL Program carries no requirements regarding public access. The NNL registry includes many sites of national significance that are open for public tours, but others are not. Since many NNLs are located on federal and state property, permission to visit is often unnecessary. Some private properties may be open to public visitation or just require permission from

4200-596: The ship. The U.S. officers informed Zuckschwerdt that the Cormoran would be treated as an enemy combatant and left to inform Governor Smith of the situation. Unbeknownst to the Americans, the Germans had secreted an explosive device in the ship's coal bunker. Minutes after the Americans left, an explosion aboard Cormoran hurled debris across the harbor and her crew began abandoning ship. The two American boats and USS Supply immediately began to recover German sailors from

4270-420: The site manager. On the other hand, some NNL private landowners desire no visitors whatsoever and might even prosecute trespassers . The reasons for this viewpoint vary: potential property damage or liability , fragile or dangerous resources, and desire for solitude or no publicity. NNL designation is an agreement between the property owner and the federal government. NNL designation does not change ownership of

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4340-538: The site or area. Administration and preservation of National Natural Landmarks is solely the owner's responsibility. Either party may terminate the agreement after they notify the other. The NNL designation is made by the Secretary of the Interior after an in-depth scientific study of a potential site. All new designations must have owner concurrence. The selection process is rigorous: to be considered for NNL status,

4410-477: The water, saving all but seven of the roughly 370 Cormoran crew. This incident, including the warning shots against the launch, accounted for the first violent action of the United States in World War I , first shots fired by the U.S. against Germany in World War I, the first German prisoners of war captured by the U.S., and the first Germans killed in action by the U.S. in World War I. During World War II ,

4480-490: Was 168,801. Chamorros are its largest ethnic group, but a minority on the multiethnic island. The territory spans 210 square miles (540 km ; 130,000 acres) and has a population density of 775 per square mile (299/km ). Indigenous Guamanians are the Chamorro , who are related to the Austronesian peoples of the Malay Archipelago , the Philippines , Taiwan , and Polynesia . But unlike most of its neighbors,

4550-495: Was 98 inches or 2,490 millimeters between 1981 and 2010. The wettest month on record at Guam Airport has been August 1997 with 38.49 inches (977.6 mm). The driest was February 2015 with 0.15 inches (3.8 mm). The wettest calendar year was 1976 with 131.70 inches (3,345.2 mm). The driest year was in 1998 with 57.88 inches (1,470.2 mm). The most rainfall in a single day occurred on October 15, 1953, when 15.48 inches or 393.2 millimeters fell. The mean high temperature

4620-452: Was discovered in 1925 on Rota . The first European to travel to Guam was Portuguese navigator Ferdinand Magellan , sailing for the King of Spain , when he sighted the island on March 6, 1521, during his fleet's circumnavigation of the globe. Despite Magellan's visit, Guam was not officially claimed by Spain until January 26, 1565, by Miguel López de Legazpi . From 1565 to 1815, Guam and

4690-546: Was established at Piti in 1899. A United States Marine Corps barracks was established at Sumay in 1901. A marine seaplane unit was stationed in Sumay from 1921 to 1930, the first in the Pacific. The Commercial Pacific Cable Company built a telegraph/telephone station in 1903 for the first trans-Pacific communications cable, followed by Pan American World Airways establishing a seaplane base at Sumay for its trans-Pacific China Clipper route. On December 10, 1914,

4760-519: Was listed as threatened under the Endangered Species Act. The hawksbill sea turtle ( Eretmochelys imbricata ) has been on the endangered list since 1970. In an effort to ensure the protection of sea turtles on Guam, routine sightings are counted during aerial surveys and nest sites are recorded and monitored for hatchlings. In the 2020 United States Census , the largest ethnic group were the native Chamorros , accounting for 32.8% of

4830-495: Was set on February 1, 2021. The lowest recorded temperature was 65 °F (18.3 °C), set on February 8, 1973. Guam lies in the path of typhoons and it is common for the island to be threatened by tropical storms and possible typhoons during the wet season. The highest risk of typhoons is from August through November, where typhoons and tropical storms are most probable in the western Pacific. They can, however, occur year-round. Typhoons that have caused major damage on Guam in

4900-530: Was the language of administration for 300 years, influenced the Chamorro language . The predominant religion of Guam is Christianity . Three-quarters of the population adheres to Catholicism , while most of the remainder belong to Protestant churches. According to the Pew Research Center , the religious demography of Guam in 2010 was as follows: In 2020, the Vatican claimed that 87.72% of

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