Falcon Dam ( es, Presa Falcón) is an earthen embankment

dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, a ...

on the

Rio Grande The Rio Grande ( and ), known in Mexico as the Río Bravo del Norte or simply the Río Bravo, is one of the principal rivers (along with the Colorado River) in the southwestern United States and in northern Mexico. The length of the Rio G ...

between Starr County in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

and the city of

Nueva Ciudad Guerrero Nueva Ciudad Guerrero (''New Guerrero City'') is a city in the Mexican state of Tamaulipas. It lies on the banks of the Rio Grande / Río Bravo, near the US–Mexico border, opposite to Falcon Heights, Texas. The Lake Falcon Dam International C ...

in the

Mexican state The states of Mexico are first-level administrative territorial entities of the country of Mexico, which is officially named Mexico, United Mexican States. There are 32 federal entities in Mexico (31 states and the capital, Mexico City, as a sepa ...

Tamaulipas Tamaulipas (), officially the Free and Sovereign State of Tamaulipas ( es, Estado Libre y Soberano de Tamaulipas), is a state in the northeast region of Mexico; one of the 31 states which, along with Mexico City, comprise the 32 Federal Entiti ...

. The dam was built for

water conservation Water conservation includes all the policies, strategies and activities to sustainably manage the natural resource of fresh water, to protect the hydrosphere, and to meet the current and future human demand (thus avoiding water scarcity). Populati ...

irrigation Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow Crop, crops, Landscape plant, landscape plants, and Lawn, lawns. Irrigation has been a key aspect of agriculture for over 5,00 ...

hydroelectric power generation Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...

, and

recreation Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasur ...

al purposes and as an international border crossing between Zapata and

Starr Starr may refer to: People and fictional characters * Starr (surname), a list of people and fictional characters * Starr (given name), a list of people and fictional characters Places United States * Starr, Ohio, an unincorporated comm ...

Counties and Tamaulipas. Construction on the dam began in December 1950 and ended in April 1954 but it was dedicated by presidents

Adolfo Ruiz Cortines Adolfo Tomás Ruiz Cortines (; 30 December 1889 – 3 December 1973) was a Mexican politician who served as President of Mexico from 1952 to 1958, after winning the disputed 1952 elections as the candidate of the ruling Institutional Revoluti ...

and

Dwight D. Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; ; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, ...

in October 1953.

Construction

The Falcon Dam was authorized by the Treaty for the Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande or Water Treaty of 1944 between

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

and the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. Construction on the dam began on 15 December 1950 and the reservoir began to fill on 25 August 1953. The dam was dedicated on 19 October 1953 and work was officially complete on 8 April 1954. By October 1954, the dam's hydroelectric power station began to produce electricity.

Characteristics

The Falcon Dam is a high and long earthen

embankment dam An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and ...

. The dam is made of of earth-fill, of

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

and of reinforced

steel Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant ty ...

. The center of the dam is over-topped with a long

spillway A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure tha ...

with widths ranging from at the top and at the bottom. The spillway is controlled by six fixed wheel gates and can release up to downstream. The Falcon Dam supplies water to two different

hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

power plants, one on the Mexican side and another on the U.S. side. Each power plant contains 3 x 10.5 MW

Francis turbine The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The proces ...

generators for a combined total of 63 MW. Each power plant also receives water from the reservoir via 4 x diameter

penstock A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. H ...

s. The two extra penstocks are for an additional generator if needed. The Falcon Dam created the

Falcon International Reservoir Falcon International Reservoir ( es, Embalse Internacional Falcón), commonly called Falcon Lake, is a reservoir on the Rio Grande 40 miles (64 km) southeast of Laredo, Texas, United States, and Nuevo Laredo, Tamaulipas, Mexico. The huge lake ...

that has a volume of and a surface area of .

Border crossing

The

Falcon Dam Port of Entry Falcons () are birds of prey in the genus ''Falco'', which includes about 40 species. Falcons are widely distributed on all continents of the world except Antarctica, though closely related raptors did occur there in the Eocene. Adult falcons ...

is a

port of entry In general, a port of entry (POE) is a place where one may lawfully enter a country. It typically has border security staff and facilities to check passports and visas and to inspect luggage to assure that contraband is not imported. Internati ...

at the Falcon Dam to the United States on the Mexican border. It is essentially a replacement for the former Zapata Port of Entry, which was situated at a bridge in the town of

Zapata, Texas Zapata is a census-designated place (CDP) in and the county seat of Zapata County, Texas, United States. The population was 14,018 at the 2010 census. As an unincorporated community, Zapata has no municipal government but like all 254 Texas count ...

. When the dam was completed, the town was moved to higher ground, and the Zapata Bridge now lies at the bottom of Falcon Lake.

2010 Plot

In June 2010, U.S. authorities revealed that the

Los Zetas Los Zetas (, Spanish for "The Zs") is a Mexican criminal syndicate, regarded as one of the most dangerous of Mexico's drug cartels. They are known for engaging in brutally violent "shock and awe" tactics such as beheadings, torture, and indiscri ...

drug cartel had planned to destroy the Falcon Dam to terrorize the rival Gulf Cartel, which smuggles drugs in the area. Small amounts of

dynamite Dynamite is an explosive made of nitroglycerin, sorbents (such as powdered shells or clay), and Stabilizer (chemistry), stabilizers. It was invented by the Swedish people, Swedish chemist and engineer Alfred Nobel in Geesthacht, Northern Germa ...

discovered near the dam and a copy of a warning helped alert authorities. A larger U.S. and Mexican security presence in the area may have thwarted the attack that Los Zetas had reportedly warned civilians about on the Mexican side of the border.

References

External links

Falcon Dam & Power Plant
- ''U.S. State Dept Website'' * {{Rio Grande dams and diversions Dams in Texas Buildings and structures in Starr County, Texas Hydroelectric power plants in Texas Hydroelectric power stations in Mexico Dams in Mexico Dams completed in 1954 Energy infrastructure completed in 1954 Dams on the Rio Grande 1954 establishments in Texas 1954 establishments in Mexico