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Hot Springs National Park is an American
national park A national park is a natural park in use for conservation purposes, created and protected by national governments. Often it is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. Although individual ...
in central Garland County, Arkansas, adjacent to the city of
Hot Springs A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circ ...
, the county seat. Hot Springs Reservation was initially created by an act of the
United States Congress The United States Congress is the legislature of the federal government of the United States. It is Bicameralism, bicameral, composed of a lower body, the United States House of Representatives, House of Representatives, and an upper body, ...
on April 20, 1832, to be preserved for future recreation. Established before the concept of a national park existed, it was the first time that land had been set aside by the federal government to preserve its use as an area for recreation. The
hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circ ...
water has been popularly believed for centuries to possess medicinal properties, and was a subject of legend among several Native American tribes. Following federal protection in 1832, the city developed into a successful
spa town A spa town is a resort town based on a mineral spa (a developed mineral spring). Patrons visit spas to "take the waters" for their purported health benefits. Thomas Guidott set up a medical practice in the English town of Bath, Somerset, B ...
. Incorporated January 10, 1851, the city was known in the early 20th century as the home to
Major League Baseball Major League Baseball (MLB) is a professional baseball organization and the oldest major professional sports league in the world. MLB is composed of 30 total teams, divided equally between the National League (NL) and the American League (A ...
spring training, illegal gambling, speakeasies during the
Prohibition era Prohibition is the act or practice of forbidding something by law; more particularly the term refers to the banning of the manufacture, storage (whether in barrels or in bottles), transportation, sale, possession, and consumption of alcoholic be ...
, and gangsters such as
Al Capone Alphonse Gabriel Capone (; January 17, 1899 – January 25, 1947), sometimes known by the nickname "Scarface", was an American gangster and businessman who attained notoriety during the Prohibition era as the co-founder and boss of the ...
, horse racing at Oaklawn Park, the Army and Navy Hospital, and 42nd President
Bill Clinton William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 and again ...
. The area was established as a national park on March 4, 1921. Until the redesignation of Jefferson National Expansion Memorial as
Gateway Arch National Park Gateway Arch National Park is an American national park located in St. Louis, Missouri, near the starting point of the Lewis and Clark Expedition. The memorial was established to commemorate: *the Louisiana Purchase and subsequent westward mo ...
in 2018, Hot Springs was the smallest national park by area in the United States. Since Hot Springs National Park is the oldest park maintained by the National Park Service, it was the first to receive its own
US quarter The quarter, short for quarter dollar, is a United States coin worth 25 cents, one-quarter of a dollar. The coin sports the profile of George Washington on its obverse, and after 1998 its reverse design has changed frequently. It has been produ ...
in April 2010 as part of the America the Beautiful Quarters coin series. The hot springs flow from the western slope of Hot Springs Mountain, part of the Ouachita Mountain range. In the park, the hot springs have not been preserved in their unaltered state as natural surface phenomena. They have been managed to conserve the production of uncontaminated hot water for public use. The mountains within the park are also managed within this conservation philosophy to preserve the hydrological system that feeds the springs. The park includes portions of downtown Hot Springs, making it one of the most accessible national parks. There are numerous hiking trails and camping areas. Bathing in spring water is available in approved facilities at extra cost. The entire Bathhouse Row area is designated as a
National Historic Landmark A National Historic Landmark (NHL) is a building, district, object, site, or structure that is officially recognized by the United States government for its outstanding historical significance. Only some 2,500 (~3%) of over 90,000 places liste ...
District; it contains the grandest collection of bathhouses of its kind in North America, including many outstanding examples of
Gilded Age In United States history, the Gilded Age was an era extending roughly from 1877 to 1900, which was sandwiched between the Reconstruction era and the Progressive Era. It was a time of rapid economic growth, especially in the Northern and Wes ...
architecture Architecture is the art and technique of designing and building, as distinguished from the skills associated with construction. It is both the process and the product of sketching, conceiving, planning, designing, and constructing buildings ...
. The row's Fordyce Bathhouse serves as the park's visitor center; the Buckstaff and Quapaw are the only facilities in 2015 still operating as bathhouses. Other buildings of the row are being restored or are used for other purposes.


Discovery and protection

For many years, this area was visited by chiefs and tribes of numerous indigenous peoples. They called it the "Valley of the Vapors" at the time of Spanish explorer
Hernando de Soto Hernando de Soto (; ; 1500 – 21 May, 1542) was a Spanish explorer and ''conquistador'' who was involved in expeditions in Nicaragua and the Yucatan Peninsula. He played an important role in Francisco Pizarro's conquest of the Inca Empire ...
's arrival in the area in 1541. He was the first known European to see the springs. Members of many Native American tribes had been gathering in the valley for over 8,000 years to enjoy the healing properties of the thermal springs. Around the 18th century the
Caddo The Caddo people comprise the Caddo Nation of Oklahoma, a federally recognized tribe headquartered in Binger, Oklahoma. They speak the Caddo language. The Caddo Confederacy was a network of Indigenous peoples of the Southeastern Woodlands, w ...
settled in the area, followed by the
Choctaw The Choctaw (in the Choctaw language, Chahta) are a Native American people originally based in the Southeastern Woodlands, in what is now Alabama and Mississippi. Their Choctaw language is a Western Muskogean language. Today, Choctaw people are ...
,
Cherokee The Cherokee (; chr, ᎠᏂᏴᏫᏯᎢ, translit=Aniyvwiyaʔi or Anigiduwagi, or chr, ᏣᎳᎩ, links=no, translit=Tsalagi) are one of the indigenous peoples of the Southeastern Woodlands of the United States. Prior to the 18th century, th ...
, and other tribes from the Southeast across the Mississippi River. There was agreement among the tribes that they would put aside their weapons and partake of the healing waters in peace while in the valley.Hot Springs AR Info
Hot Springs AR History & Facts
The Quapaw lived in the
Arkansas River The Arkansas River is a major tributary of the Mississippi River. It generally flows to the east and southeast as it traverses the U.S. states of Colorado, Kansas, Oklahoma, and Arkansas. The river's source basin lies in the western United ...
delta area and visited the springs. In 1673 Father Marquette and Jolliet explored the area and claimed it for France. The Treaty of Paris 1763 ceded the land back to Spain; however, in 1800 control was returned to France until the
Louisiana Purchase The Louisiana Purchase (french: Vente de la Louisiane, translation=Sale of Louisiana) was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803. In return for fifteen million dollars, or ap ...
of 1803. In December 1804 William Dunbar and George Hunter made an expedition to the Ouachita Mountains and the springs at the request of President Thomas Jefferson, to study the native peoples and flora and fauna. They found one log cabin and a few rudimentary shelters used by people visiting the springs for their healing properties. In 1807 Jean Emmanual Prudhomme, of French colonial descent, became the first European-American settler of modern Hot Springs. After he regained his health following two years of bathing in the hot water and eating local foods, he returned home to his plantation on the Red River in Louisiana. Not long afterward trappers John Perciful and Isaac Cates arrived; Perciful put up more cabins for visitors. On August 24, 1818, the Quapaw Indians ceded the land around the hot springs to the United States in a treaty after having been forced to a reservation south of the site. They were removed to
Indian Territory The Indian Territory and the Indian Territories are terms that generally described an evolving land area set aside by the United States Government for the relocation of Native Americans who held aboriginal title to their land as a sovereign ...
in the 1830s. After Arkansas became a territory in 1819, the Arkansas Territorial Legislature requested in 1820 that the springs and adjoining mountains be set aside as a federal reservation. Twelve years later, in 1832, the
22nd United States Congress The 22nd United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 18 ...
formed the national reservation, granting federal protection of the thermal waters and giving Hot Springs the honor of being the first area to be designated for federal government protection. The Hot Springs Reservation was set aside for public use as a park on June 16, 1880.


National park

By act of Congress in 1921, the site's name was officially changed from the Hot Springs Reservation to Hot Springs National Park. The government acquired more land, expanding it to more than , including Hot Springs Mountain, North Mountain, West Mountain, Sugarloaf Mountain, and Whittington Lake Park. It later was expanded to . The springs are grouped about the base of the Hot Springs Mountain, with a flow of well over a half million gallons a day. The hot water is supplied to the various bathhouses, with resulting income from concession fees going to the U.S. Treasury. The park has miles of roads and trails over the mountains. The park is open throughout the year. The first bathhouses were little more than brush huts and log cabins placed over excavations cut in the rocks to receive hot water that flowed from the springs. Entrepreneurs soon developed more elaborate bathing facilities, featuring wooden troughs delivering water from hillside springs to bathhouses along the east bank of Hot Springs Creek. Some of the tufa covering the hillside was excavated to accommodate the bathhouses. The narrow street along the west side of the creek was connected to the bathhouses by narrow bridges. After direct federal supervision was exercised beginning in 1877, major improvements were made. The creek was covered with stone arches, and above it a street wide was built. All the squatters were evicted, rubbish cleaned up, and a centralized plumbing system was begun. This was completed around 1890. In 1950, central cooling towers limited the maximum temperature of the springs to a safe level, so individual bathhouses no longer needed their own cooling systems. The park operates a public campground at Gulpha Gorge, about from downtown Hot Springs.


City of Hot Springs

The city of Hot Springs (incorporated 1851) is governed under State and municipal law. In the 1870s, African Americans in town were concentrated in Happy Valley, north of Hot Springs Mountain. There were churches of various denominations, including Baptist for white and black congregations. The National Park Service exercises no control or supervision over any matters connected with the city. The city starts on the other side of Central Avenue from Bathhouse Row. Its development has extended beyond the narrow valley in which the springs are located, spreading out over the open plain to the south and east. The climate is good throughout the year. The elevation of the city is above sea level, with surrounding hills rising another 600 feet. In the first half of the 20th century, the city operated primarily as a summer resort, but hotels have now long stayed open during the winter due to many northerly patrons coming to escape the winter cold. During the peak popularity of the hot springs, until the 1950s, the many patients staying for three weeks, six weeks, or longer were a large source of business for the numerous hotels, boarding houses, doctors, and drugstores. As the daily treatments required only an hour or two, the visitors' idle time created opportunities for other businesses in the town.


Bathing customs

It was believed the waters benefited diseases of the skin and blood, nervous affections, rheumatism and kindred diseases, and the "various diseases of women". In the case of
tuberculosis Tuberculosis (TB) is an infectious disease usually caused by '' Mycobacterium tuberculosis'' (MTB) bacteria. Tuberculosis generally affects the lungs, but it can also affect other parts of the body. Most infections show no symptoms, ...
and lung diseases, and acute and inflammatory diseases, the use of the waters was considered injurious and in many cases very dangerous. The earliest bathing procedure consisted of merely reclining in natural pools of hot springs and cool creek water for long periods of time. During the 1820s crude vapor baths stood over the springs, and bathers breathed in the vapors for extended periods of time. Wooden tubs were added to some bathhouses in the 1830s. Physicians began arriving in the 1850s, although many visitors did without their services; visitors remained from one week to two months. After the Civil War a tub bath of 15 to 20 minutes was common. During the 1870s the bathing regimen became more diverse, and physicians prescribed various types of baths for patients. The period of time for tub baths became six to ten minutes and the time in the steam bath shortened to two minutes, with only one bath a day. The treatment was by drinking and bathing in the waters, producing a profuse perspiration, which was considered an active agent in fighting disease. The advice of a physician who was familiar with the use of the waters was considered necessary to avoid injury. In many cases medicine was required before using the waters, although it had been observed that the amount of drugs given was "enough to sicken a well man." The hot baths were usually taken once a day for three weeks, when a rest was necessary (often with a week at the sulphur springs near the Ouachita River). A second three weeks' course was then taken, followed again by an abstinence from bathing for several days. The usual stay at the springs was from one to three months, but many invalids stayed a year and longer. The process described in 1878 was a hot bath of for about 3 minutes (timed with a sand-glass). This was followed by another three minutes with all but the head in a steam box, or if milder treatment was prescribed, sitting atop the steam box covered with a blanket. During this the bather is also drinking hot water from their coffee-pot. After these eight to ten minutes of treatment, the bather is well rubbed down and thoroughly dried. The blanket-covered customer then would walk briskly back to their quarters to lie down for at least a half-hour to let the body recover its normal temperature. Sleeping at this stage was considered dangerous. The bathhouses began using vapor cabinets around 1884. The bather sat in the cabinet for 10–20 minutes with the lid closed tightly around the neck, with vapor from the hot water rising through the floor of the cabinet, with temperatures around . Toward the end of the 1880s Russian and
Turkish bath A hammam ( ar, حمّام, translit=ḥammām, tr, hamam) or Turkish bath is a type of steam bath or a place of public bathing associated with the Islamic world. It is a prominent feature in the culture of the Muslim world and was inherited ...
s were offered, and in the 1890s German needle baths and Scotch douches (concentrated stream of hot or cold water, often used on the back) were added. Although details of services were left to bathhouse operators, the Park's superintendent set various rules. In the 1930s a tub bath could not take more than 20 minutes and shower no more than 90 seconds. During the next decade shower time was reduced to a minute, with maximum temperatures specified for several services. After a bath of about , the patient might spend 2–5 minutes in a vapor cabinet, get 15 minutes of packs (wet, hot or cold), followed by a tepid needle shower, and light massage and alcohol rub. By 1980 one reporter described getting a 20-minute bath, two minutes in a steam bath, 15 minutes wrapped with hot packs, and resting in a cooling room for 20–30 minutes. The current modern facilities are oriented toward spa style or pool services. File:Lamar BH P6210141 Bathhouse Row.jpg, Lamar Bathhouse File:Ozark BH P6220178.jpg, Ozark Bathhouse File:Hot Springs National Park Buckstaff BH (active).JPG, Buckstaff Bathhouse File:Quapaw BH P6220180.jpg, Quapaw Bathhouse


Pay bathhouses

There have been nearly two dozen pay bathhouses operating at the same time, with about nine of those within the park's "Bathhouse Row." (Facilities have been reworked over the years, and the Quapaw operate a bath incorporating two previously separate bathhouses). Nine of the bathhouses were associated with hotels, hospitals, or sanatoria. The water is the same for all, but the prices charged for the baths have varied according to the equipment, accommodations and services offered by each facility. The charges for the services of the attendants are the same and include the necessities except towels, blankets, bathrobes, laundering, rubbing mercury, and handling of invalids. The area was popular with baseball players in the early 20th century, and was used by some teams for spring training. In 1929, prices for single baths ranged from $1 to $1.40, while a course of 21 baths was $16 to $24. Facilities were segregated until civil rights legislation in the 1960s. Baths were offered for whites at the Arlington Hotel, Fordyce, Buckstaff, the 500-room Eastman Hotel, Maurice, La Mar, Majestic Hotel, Quapaw, Hale, Imperial, Moody Hotel, Ozark, St. Joseph's Infirmary, Superior, Ozark Sanatorium, Rockafellow, and Alhambra, and for people of color at the Pythian, Woodmen of Union and National Baptist Hotel and Sanitorium. At present on Bathhouse Row only the Buckstaff and Quapaw are operating as bathhouses. The Fordyce is open as a visitor center; its staff gives tours of the facilities that have been historically renovated to their original appearance. The Ozark is housing the Museum of Contemporary Art; its space can be rented as reception hall. The Arlington Hotel, Austin Hotel and Convention Center, and The Springs Hotel & Spa also offer hot spring baths using the Park water. File:Hot Springs NP Bathhouse Row (Fordyce BH) VC.JPG, Fordyce Bathhouse File:Maurice BH P6220191.jpg, Maurice Bathhouse File:Hale and Superior Bathhouses, Hot Springs National Park.JPG, Hale and Superior Bathhouses File:Hot Springs NP (Nat Bapt Hotel n Sanitorium).JPG, National Baptist Hotel and Sanitorium (bathhouse for 'colored peoples')


Army and Navy Hospital

The former Army and Navy General Hospital was also supplied with water from the springs. It is located behind the south end of Bathhouse Row along the base of Hot Springs Mountain. It was administered by the War Department for the benefit of military members, officers of the Public Health Service, and honorably discharged veterans. The waters of the hot springs had an established reputation in benefiting. Admission to the hospital was reserved for cases "of a serious and obstinate character, which, though resisting ordinary methods of relief, were promised a rapid and permanent recovery from the use of the waters of the spring." The present facility was built in 1933 as the second Army-Navy hospital. It has been used and operated by the state for over 60 years, first as the Hot Springs Rehabilitation Center, then for a short time as the Arkansas Career Training Institute, and now as the Arkansas Career Development Center. It is listed on the
National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...
as the "Army and Navy General Hospital Historic District".


Disasters

In November 1864 during the American Civil War, a large part of "the valley" (the central portion of the city along Hot Springs Creek) was burned - presumably by Union troops. As in many other cities, fire has been a risk, especially before city services were developed. On March 5, 1878 a large fire burned for eight hours in the city, claiming nearly 150 buildings, including hotels, bath houses, and restaurants. On February 26, 1905, a fire started in the Grand Central Hotel on Chapel Street and burned 25 blocks of the southern section of Hot Springs. On September 5, 1913, a laundry worker was ironing and accidentally started a fire at 424 Church Street, which spread rapidly due to strong winds and burned nearly 60 blocks of the south part of the city. The city has also been subject to flooding because of the narrow valley. On May 14, 1923, a severe rainstorm hit the city. With mountains surrounding three sides of the city, water flooded down the slopes of the mountains, funneling to Central Avenue and reaching a depth of nine feet. A lightning strike during the storm caused a fire that destroyed several commercial businesses in downtown Hot Springs. On February 15, 1956, a severe flood filled Central Avenue with three feet of rushing water, causing significant property damage. On May 19, 1990, a series of storms dropped more than of rain into the city, causing flash floods. A wave of water six feet high washed through downtown Hot Springs, causing extensive damage. During the flood, Carpenter Dam Bridge was washed away. On February 27, 2014, fire broke out at the Majestic Hotel on Park Avenue just outside the boundaries of the national park. It took 75 firefighters over 22 hours to extinguish the blaze in the oldest section of the hotel, and in the end the building was a total loss. Just days later, the city of Hot Springs had the "red brick" portion of the building razed. It was believed that trespassers had started the blaze. The remainder of the Majestic was razed in the Fall of 2016.


Government free baths

Congress established a free bathhouse for the indigent here on December 16, 1878. The ''Ral Hole'' mudpit and pool were closed, and the first Government Free Bathhouse operated at the site. The Government free bathhouse was a concrete building fully equipped for bathing large numbers of people under sanitary conditions. In 1878 the Army and Navy opened a free dispensary on the second floor, which remained open for two years. In 1916 the Public Health Service opened a clinic for the examination and treatment of indigents taking the free baths. 100,000 baths a year were given to the poor. Applicants for free baths were required to make an oath that they were without and unable to obtain means to pay for the baths, with violations being a misdemeanor subject to fine and/or imprisonment.Paige, J. C., & Harrison, L. S. (1988). Out of the vapors: A social and architectural history of bathhouse row : Hot Springs National Park, Arkansas. U.S. Department of the Interior, National Park Service.
/ref> Tickets were issued to those who, after examination, were found to be suffering from diseases which were reasonably expected to be benefited from the baths. During the 1880s a few of the open springs gradually dried up. ''Corn Hole'', a popular spring where people soaked their feet, dried up in 1882.Bake, William A. (1996). ''The Sierra Club guides to the national parks of the East and Middle West.'' Stewart, Tabori & Chang, Other open springs were either covered over by the National Park Service or the bathhouse owners to prevent their pollution. A new free bathhouse was built in 1904, with separate facilities for black and white patrons. The materials used in construction were of poor quality. A new bathhouse was built off the reservation in 1922. The Park Service reminded people that they had to provide their own board and lodging and to have return travel fare, due to many destitute invalids who arrived each year in the mistaken belief that there was a public institution at which they would be cared for free of charge. The free bathhouse closed in 1957, as it was more economical to have the few indigent customers served by the commercial bathhouses. The poor applied at park headquarters and upon approval by a physician were sent to a participating bathhouse, which was reimbursed by the government.


Climate

According to the
Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, nota ...
system, Hot Springs National Park has a
Humid subtropical climate A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...
(''Cfa''). According to the
United States Department of Agriculture The United States Department of Agriculture (USDA) is the federal executive department responsible for developing and executing federal laws related to farming, forestry, rural economic development, and food. It aims to meet the needs of comme ...
, the Plant
Hardiness zone A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most wide ...
at Hot Springs National Park Visitor Center at 627 ft (191 m) elevation is 7b with an average annual extreme minimum temperature of 9.5 °F (-12.5 °C).


Flora and fauna

According to the
A. W. Kuchler August William Kuchler (born ''August Wilhelm Küchler''; 1907–1999) was a German-born American geographer and naturalist who is noted for developing a plant association system in widespread use in the United States. Some of this database has bec ...
U.S.
Potential natural vegetation In ecology, potential natural vegetation (PNV), also known as Kuchler potential vegetation, is the vegetation that would be expected given environmental constraints (climate, geomorphology, geology) without human intervention or a hazard event ...
Types, Hot Springs has an Oak/
Hickory Hickory is a common name for trees composing the genus ''Carya'', which includes around 18 species. Five or six species are native to China, Indochina, and India (Assam), as many as twelve are native to the United States, four are found in Mex ...
/
Pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family (biology), family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanic ...
(''111'') potential vegetation type and a Southern Mixed forest (''26'') potential vegetation form. The area is primarily forest. The northern slopes of the ridges and basins provide a suitable habitat for
deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, ...
forest dominated by oak and
hickory Hickory is a common name for trees composing the genus ''Carya'', which includes around 18 species. Five or six species are native to China, Indochina, and India (Assam), as many as twelve are native to the United States, four are found in Mex ...
.
Pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family (biology), family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanic ...
s predominate on the south sides of the ridges. There are of unlogged pine and oak forests on North and Hot Springs Mountains, and on Sugarloaf Mountain. These
old-growth forest An old-growth forestalso termed primary forest, virgin forest, late seral forest, primeval forest, or first-growth forestis a forest that has attained great age without significant disturbance, and thereby exhibits unique ecological feature ...
s contain
shortleaf pine ''Pinus echinata'', the shortleaf pine, is a species of pine native to the southeastern United States. Description The tree is variable in form, sometimes straight, sometimes crooked, with an irregular crown. The tree reaches heights of with ...
,
blackjack oak ''Quercus marilandica'', the blackjack oak, is a small oak, one of the red oak group ''Quercus'' sect. ''Lobatae''. It is native to the eastern and central United States. Description ''Quercus marilandica'' is a small deciduous tree growing to ...
, and white oak; many of the trees over 130 years old, and a few over 200 years old. Plains bison, elk,
cougar The cougar (''Puma concolor'') is a large cat native to the Americas. Its range spans from the Canadian Yukon to the southern Andes in South America and is the most widespread of any large wild terrestrial mammal in the Western Hemisphere. ...
and
red wolf The red wolf (''Canis rufus'') is a canine native to the southeastern United States. Its size is intermediate between the coyote (''Canis latrans'') and gray wolf (''Canis lupus''). The red wolf's taxonomic classification as being a separate s ...
left the region after European settlement. Present day fauna include white tail deer,
wild turkey The wild turkey (''Meleagris gallopavo'') is an upland ground bird native to North America, one of two extant species of turkey and the heaviest member of the order Galliformes. It is the ancestor to the domestic turkey, which was originally d ...
,
squirrel Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels (including chipmunks and prairie dogs, among others), and flying squirrels. ...
,
rabbit Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit sp ...
,
Virginia opossum The Virginia opossum (''Didelphis virginiana''), also known as the North American opossum, is the only opossum living north of Mexico, its range extending south into Central America. It is the northernmost marsupial in the world. In the United S ...
,
gray fox The gray fox (''Urocyon cinereoargenteus''), or grey fox, is an omnivorous mammal of the family Canidae, widespread throughout North America and Central America. This species and its only congener, the diminutive island fox (''Urocyon littor ...
,
coyote The coyote (''Canis latrans'') is a species of canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecological nich ...
,
skunk Skunks are mammals in the family Mephitidae. They are known for their ability to spray a liquid with a strong, unpleasant scent from their anal glands. Different species of skunk vary in appearance from black-and-white to brown, cream or gin ...
,
raccoon The raccoon ( or , ''Procyon lotor''), sometimes called the common raccoon to distinguish it from other species, is a mammal native to North America. It is the largest of the procyonid family, having a body length of , and a body weight of ...
, gopher, long-tailed weasel,
mink Mink are dark-colored, semiaquatic, carnivorous mammals of the genera '' Neogale'' and '' Mustela'' and part of the family Mustelidae, which also includes weasels, otters, and ferrets. There are two extant species referred to as "mink": ...
, rat,
chipmunk Chipmunks are small, striped rodents of the family Sciuridae. Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia. Taxonomy and systematics Chipmunks may be classified either as ...
,
frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...
, and
nine-banded armadillo The nine-banded armadillo (''Dasypus novemcinctus''), also known as the nine-banded long-nosed armadillo or common long-nosed armadillo, is a mammal found in North, Central, and South America, making it the most widespread of the armadillos. ...
. Some migratory birds following the
Mississippi Flyway The Mississippi Flyway is a bird migration route that generally follows the Mississippi, Missouri, and Lower Ohio Rivers in the United States across the western Great Lakes to the Mackenzie River and Hudson Bay in Canada. The main endpoint ...
spend part of the year in the vicinity.


Geology

The thermal springs are situated in the Ouachita Mountains of central Arkansas. The springs emerge in a gap between Hot Springs Mountain and West Mountain in an area about long by wide at altitudes from . The springs predominantly are composed of hot water from thousands of feet underground mixed with some shallow cold ground water. Currently, there are 43 thermal springs in the park that are presumed to be flowing. Thermal water from 33 of the thermal springs is collected and monitored at a central reservoir, which distributes the combined discharge for public use and consumption. Rock types in the area include
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especiall ...
units which generally impede ground-water movement, while fractured
chert Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a ...
,
novaculite Novaculite, also called Arkansas Stone, is a microcrystalline to cryptocrystalline rock type that consists of silica in the form of chert or flint. It is commonly white to grey or black in color, with a specific gravity that ranges from 2.2 to 2.5 ...
, and
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicat ...
units generally support ground-water movement. The water comes from rain which falls in mountains to the north and northeast. Flowing downward through cracked rock at about one foot per year, the meteoric water migrates to estimated minimum depths of and achieves high temperatures in the deep section of the flow path before rising along fault and fracture conduits. Under artesian pressure, the thermal waters rise and emerge through the Hot Springs Sandstone between the traces of two thrust faults, along several northeast-trending lineaments. Some rainwater from near the springs mixes with the deep hot water before discharge. The trip down takes about 4,000 years while the hot water takes about a year to reach the surface. The heat comes from the natural heating of rocks as depth increases. The composition of the water indicates it is heated rainwater which has not approached a magmatic source, so no volcanic action is involved in the formation of these hot springs. The result is the mildly
alkaline In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a ...
, pleasant tasting solution with dissolved calcium carbonate.


Rock types

The exposed rock types in the vicinity of the thermal springs are
sedimentary rock Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...
s of Mississippian to
Ordovician The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. T ...
age, with the exception of younger
igneous rock Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma o ...
s (
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...
age) exposed in two small areas about southeast of the thermal springs (Potash Sulphur Spring and Magnet Cove, respectively), and in many small
dikes Dyke (UK) or dike (US) may refer to: General uses * Dyke (slang), a slang word meaning "lesbian" * Dike (geology), a subvertical sheet-like intrusion of magma or sediment * Dike (mythology), ''Dikē'', the Greek goddess of moral justice * Dikes ...
and sills. Most dikes are less than wide. There have been 80 dikes noted about southeast of Hot Springs, on and near the
Ouachita River The Ouachita River ( ) is a river that runs south and east through the U.S. states of Arkansas and Louisiana, joining the Tensas River to form the Black River near Jonesville, Louisiana. It is the 25th-longest river in the United State ...
. There is no indication that igneous rock occurs where the thermal springs discharge. The sedimentary rocks in the vicinity of the thermal springs consist of shale, chert, novaculite, sandstone, and conglomerate. * The Stanley Shale is predominantly a
clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay pa ...
ey, thinly fissile, black to green shale, with large amounts of sandstone interbedded throughout the formation. The sandstone, when freshly exposed, is a hard, fine-grained, feldspathic,
silt Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel ...
y sandstone, but weathers easily to a soft, clayey porous material ranging from green to brown in color. Almost all of the low-lying areas in the city of Hot Springs are composed of the Stanley Shale, and it surrounds Hot Springs Mountain on the south, east, and west sides. * The Hot Springs Sandstone Member of the Stanley Shale, hereafter referred to as the Hot Springs Sandstone, consists of fine- to medium-grained sandstone with some shale and conglomerate. The sandstone is gray, hard and
quartzitic Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tect ...
, reaching thicknesses up to . The shale predominantly occurs at the top of the unit, and the principal bed of the conglomerate occurs at the bottom. * The Arkansas Novaculite consists of lower, middle, and upper members. The lower member is a massive fractured novaculite, and is the dominant member on Hot Springs Mountain, with a thickness of about The middle member is a black clay shale interbedded with novaculite, about thick on Hot Springs Mountain. The upper member is chiefly a massive, highly calcareous light gray to black novaculite. It reaches a maximum thickness of in the area. * The Polk Creek Shale and Missouri Mountain Shale overlie the Bigfork Chert and generally consist of shale with minor thin layers of quartzitic sandstone. The Polk Creek Shale is a black, fissile,
graphitic Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on l ...
shale. The Missouri Mountain Shale varies in color, and is soft and argillaceous. * The Bigfork Chert overlies the Womble Shale and consists almost entirely of chert and silty chert in layers thick, separated by minor thin beds of black shale. The chert is very brittle and intensely fractured from folding. * The Womble Shale is the oldest geologic unit that underlies all other exposed units. It is black, hard, and argillaceous shale. During most of the
Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ...
Era, what became the Ouachita Mountains was the bottom of a shallow sea, where several sedimentary layers were created. About 500 million years ago a collision of the
South American Plate The South American Plate is a major tectonic plate which includes the continent of South America as well as a sizable region of the Atlantic Ocean seabed extending eastward to the African Plate, with which it forms the southern part of the Mid ...
with the
North American Plate The North American Plate is a tectonic plate covering most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores. With an area of , it is the Earth's second largest tectonic plate, behind the Paci ...
caused the shale and sandstone layers to fracture and fissure, creating mountains of the folded rocks. The thermal springs emerge from the plunging crest line of a large overturned
anticline In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is t ...
in the Zigzag Mountains of the Ouachita anticlinorium. The overturned anticline plunges toward the southwest into the Mazarn Basin. There are two recognized major
thrust fault A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks. Thrust geometry and nomenclature Reverse faults A thrust fault is a type of reverse fault that has a dip of 45 degrees or less. If ...
s trending nearly parallel to fold axes that define the northern and southern limits of the thermal springs discharge area. The northern fault extends nearly parallel to Fountain Street northeastward about onto the southeast flank of North Mountain, and dips about 26 degrees north. At the northern extent of the thermal springs, this fault is suggested to form along the bedding contact of the Hot Springs Sandstone and Stanley Shale, with the Stanley Shale forming the hanging wall of the fault. The southern fault extends northeastward about roughly along the axis of the Hot Springs anticline, and dips about 44 degrees north. It has been proposed that a fault splits away from the southern fault, trends west and connects with the northern fault. A natural ravine trends along the location of this fault. Extensive cracks, joints, and fissures in the Bigfork Chert, Arkansas Novaculite, and the Hot Springs Sandstone allow the water to flow in the thermal springs area. Dissolved minerals in the water precipitate to form the white to tan
travertine Travertine ( ) is a form of terrestrial limestone deposited around mineral springs, especially hot springs. It often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and even rusty varieties. It is formed by a p ...
or " tufa rock" seen near the openings of the hot springs.


Composition of the water

The water all comes from the same deep source, but surface appearance of the springs differed. What was called Mud Spring had a tepid ooze where there was no danger of being scalded. Springs acquired names such as Magnesia, Big Iron, and Arsenic. Big Iron's water, with significant dissolved iron, would precipitate ocherous crusts and stains. Arsenic Spring, on the other hand, contains no detectable traces of that substance. The water from many springs is now combined in one supply, with the total amount of water varying from a day. The temperature averages about . Maximum temperatures have declined about since records have been kept. In 1905 curative characteristics were being ascribed to
radium Radium is a chemical element with the symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rat ...
and
Bertram Boltwood Bertram Borden Boltwood (July 27, 1870 Amherst, Massachusetts – August 15, 1927, Hancock Point, Maine) was an American pioneer of radiochemistry. Boltwood attended Yale University, became a professor there and in 1910 was appointed chair of t ...
of Yale examined these waters. There is a measurable level of radioactivity primarily due to dissolved
radon Radon is a chemical element with the symbol Rn and atomic number 86. It is a radioactive, colourless, odourless, tasteless noble gas. It occurs naturally in minute quantities as an intermediate step in the normal radioactive decay chains th ...
gas, with some
radium Radium is a chemical element with the symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rat ...
. At the time collection and distribution equipment was designed to retain the radon gas, while now it is designed to allow it to escape. The level of exposure to radiation that results from bathing appears to be similar to the level that would result from sitting in the sun for the same period of time. The park water is considered well within safe limits and similar to other natural waters throughout the world. Drinking water is dispensed from several hot water jug fountains. The hot water is naturally potable. Two cold water springs (Happy Hollow and Whittington Springs) are treated using ozone filtration. Regulations prohibit private individuals from selling the park's waters.


See also

* List of national parks of the United States *
Niagara Falls State Park Niagara Falls State Park is located in the City of Niagara Falls in Niagara County, New York, United States. The park, recognized as the oldest state park in the United States, contains the American Falls, the Bridal Veil Falls, and a portion ...
- the first ''
state park State parks are parks or other protected areas managed at the sub-national level within those nations which use "state" as a political subdivision. State parks are typically established by a state to preserve a location on account of its natural ...
'' in the United States


References


External links

* of the
National Park Service The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, most national monuments, and other natural, historical, and recreational properti ...
* * * * * * * * * * {{Authority control 1921 establishments in Arkansas Geology of Arkansas Historic American Engineering Record in Arkansas Hot springs of Arkansas National parks in Arkansas Ouachita Mountains Protected areas established in 1921 Protected areas of Garland County, Arkansas