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This material is based on work supported by the National

Science Foundation ("NSF") under Grant No. 0607010. Any

opinions, findings, and conclusions or recommendations

expressed in this material are those of the authors and do notnecessarily reflect the views of the National Science Foundation.

Watersheds

Module 4 Lesson 8

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A Watershed

describes an area of

land where all waterentering the systemexits at a specific

point

http://water.epa.gov/type/watersheds/whatis.cfm

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Watersheds

Generally:WaterflowsfromhighlandtolowlandWaterexistsataspecificpointinthesystem,usuallythroughariverorotherwaterbody

Watershedscanbeconsideredonlargeorsmallscales

Impervioussurfacescanincreasetheoverlandflowofwater,decreaseinfiltra?onintothegroundwater,upse@ngthenaturalbalanceofthewatershed

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http://www.ncdc.noaa.gov/paleo/ctl/clisci1a.html