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Hydrology

Hydrology is the study of the movement and distribution of water on a planet (e.g. Earth).

Water projects in the United States have often proceeded despite the warnings of hydrologists. West of the hundredth meridian, where the country is significantly more arid, the Bureau of Reclamation and Army Corps of Engineer had a decades long rivalry to secure more "pork barrel" funding for dam projects that made little ecological or economic sense. This story is told with real flair in "Cadillac Desert".

Modeling Streamflow in Anacostia

NW Branch Anacostia Station

USGS Stream gauge combined Location Graph for Anacostia at two points, and tributary Sligo Creek

USGS: Optimal Hydrograph Separation Using a Recursive Digital Filter Constrained by Chemical Mass Balance, with Application to Selected Chesapeake Bay Watersheds

zhao and tung - determination of optimal unit hydrographs by linear programming

Eckhardt Technical Note with recursive filter formula

baseflow separation methods based on a digital filter

Butterworth filter calculator

Physical rationale for recursive digital filter streamflow separation

Purdue Web Based Hydrograph Analysis Tool

DC Streams from Our Past ArcGIS mapx

USGS Water Data API Catalog