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It is a timeline about the events happened in the history of hydrology.
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Marcus Vitruvius described a philosophical theory of the hydrologic cycle, in which precipitation falling in the mountains infiltrated the Earth's surface and led to streams and springs in the lowlands. 20 th Century 19 th Century 18 th Century
17 th Century First Century BC Hydrology has been approached with a more theoretical basis than in the past, facilitated by advances in the physical understanding of hydrological processes and by the advent of computers and especially geographic information systems. Of particular importance were Leroy Sherman's unit hydrograph, the infiltration theory of Robert E. Horton, and C.V. Theis' aquifer test/equation describing well hydraulics. Rational analyses began to replace empiricism in the 20th century, while governmental agencies began their own hydrological research programs. Development in groundwater hydrology, including Darcy's law, the Dupuit-Thiem well formula, and Hagen-Poiseuille's capillary flow equation. Advances in the 18th century included the Bernoulli piezometer and Bernoulli's equation, by Daniel Bernoulli, and the Pitot tube, by Henri Pitot. Edmund Halley showed that the evaporation from the Mediterranean Sea was sufficient to account for the outflow of rivers flowing into the sea. With the adoption of a more scientific approach, Leonardo da Vinci and Bernard Palissy independently reached an accurate representation of the hydrologic cycle. The ancient Sinhalese used hydrology to build complex irrigation works in Sri Lanka, which allowed construction of large reservoirs, anicuts and canals which still function. Edme Mariotte combined velocity and river cross-section measurements to obtain a discharge, again in the Seine. By measuring rainfall, runoff, and drainage area, Pierre Perrault showed that rainfall was sufficient to account for the flow of the Seine. The hydrologic variables began to be quantified. The history of China shows they built irrigation and flood control works. Mesopotamian towns were protected from flooding with high earthen walls. Aqueducts was built by the Greeks and Ancient Romans. The Nile was dammed to improve agricultural productivity of previously barren lands. 1950s