Egbert Ludovicus Viele (June 17, 1825 - April 22, 1902) was an American civil engineer and cartographer active in New York City during the second half of the 19th century. Born in Saratoga County, Viele attended the United States Military Academy at West Point. Graduating in 1847, he was commissioned as a brevet second lieutenant in the 2nd United States Infantry. He served in the Mexican-American War before resigning form military duty to pursue a career as a Civil Engineer in New York City. When the call came to plan New York City's Central Park, Viele, like the ultimately victorious Vaux and Olmsted, submitted a plan. Though Viele's plan for Central Park did not win the design competition, it did bring him to the attention of the city council, who hired him as Engineer-in-chief of Central Park in 1856, and engineer of Prospect Park, Brooklyn in 1860. It was most likely during his tenure with the park commissions that Viele developed his theories connecting compromised natural drainage with sanitation and infectious disease. Viele's great cartographic masterpiece, the "Topographical Map of the City of New-York" evolved out of the notion that epidemic level disease evolved from excess moisture in the soil. He contended that, as New York City expanded northwards, paving over stream beds and leveling out natural drainage channels, the underground waterways would stagnate and lead to plague or worse. Though intended for the purpose of urban planning, the Viele Map's (as it came to be known) greatest legacy is as a construction tool. To this day, contractors, architects, and engineers consult the Viele plan to determine if unseen subterranean waterways need to be taken into account when preparing foundations. Viele died in April of 1902 and was buried in an elaborate Egyptian Revival tomb at West Point. Legend tells that Viele, paranoid that he would be buried alive, an unfortunate but surprisingly common problem in the 19th century, installed a buzzer inside his coffin that would allow him to ring the school's commanding officer should the need arise. Apparently it did not, though Viele lives today through is remarkable "Topographical Map of the City of New-York."