![A small boat navigates out of a lock of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before the two locks A small boat navigates out of a lock of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before the two locks](https://c8.alamy.com/compfr/2d0k86r/a-small-boat-navigates-out-of-a-lock-of-the-tucurui-dam-on-the-tocantins-river-a-major-tributary-of-the-amazon-during-one-of-the-final-tests-before-the-two-locks-are-inaugurated-on-tuesday-near-the-city-of-tucurui-southern-para-state-november-29-2010-the-locks-the-worlds-largest-in-terms-of-super-elevation-according-to-the-dams-operator-eletronorte-will-enable-cargo-to-be-transported-from-maraba-to-belem-at-the-amazons-mouth-and-is-expected-to-contribute-to-the-development-of-communities-in-the-amazon-basin-reuters-paulo-santos-brazil-tags-business-environment-politics-energy-2d0k86r.jpg)
A small boat navigates out of a lock of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before the two locks
![File:Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plains, Westchester County, NY HAER NY-327 (sheet 12 of 22).png - Wikimedia Commons File:Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plains, Westchester County, NY HAER NY-327 (sheet 12 of 22).png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/6/61/Bronx_River_Parkway_Reservation%2C_The_Bronx_to_Kensico_Dam%2C_White_Plains%2C_Westchester_County%2C_NY_HAER_NY-327_%28sheet_12_of_22%29.png/1200px-Bronx_River_Parkway_Reservation%2C_The_Bronx_to_Kensico_Dam%2C_White_Plains%2C_Westchester_County%2C_NY_HAER_NY-327_%28sheet_12_of_22%29.png)
File:Bronx River Parkway Reservation, The Bronx to Kensico Dam, White Plains, Westchester County, NY HAER NY-327 (sheet 12 of 22).png - Wikimedia Commons
![What Is Superelevation? | Purpose of Superelevation | Maximum & Minimum Superelevation | Design of Superelevation | Method of Providing Superelevation to the Roads What Is Superelevation? | Purpose of Superelevation | Maximum & Minimum Superelevation | Design of Superelevation | Method of Providing Superelevation to the Roads](http://9to5civil.com/wp-content/uploads/2021/06/What-Is-Superelevation-1.png)
What Is Superelevation? | Purpose of Superelevation | Maximum & Minimum Superelevation | Design of Superelevation | Method of Providing Superelevation to the Roads
![An overview of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before its two new locks are inaugurated on Tuesday near An overview of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before its two new locks are inaugurated on Tuesday near](https://c8.alamy.com/compfr/2d0p150/an-overview-of-the-tucurui-dam-on-the-tocantins-river-a-major-tributary-of-the-amazon-during-one-of-the-final-tests-before-its-two-new-locks-are-inaugurated-on-tuesday-near-the-city-of-tucurui-southern-para-state-november-29-2010-the-locks-the-worlds-largest-in-terms-of-super-elevation-according-to-the-dams-operator-eletronorte-will-enable-cargo-to-be-transported-from-maraba-to-belem-at-the-amazons-mouth-and-is-expected-to-contribute-to-the-development-of-communities-in-the-amazon-basin-reuters-paulo-santos-brazil-tags-business-environment-politics-energy-2d0p150.jpg)
An overview of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before its two new locks are inaugurated on Tuesday near
![A small boat navigates out of a lock of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before the two locks A small boat navigates out of a lock of the Tucurui dam on the Tocantins River, a major tributary of the Amazon, during one of the final tests before the two locks](https://c8.alamy.com/zoomsfr/6/e9154714e6b241f297717ba07b959717/2cyraae.jpg)