مهندسی آبخیزداری میم

Introductory/Overview Modules
These modules introduce the principles of the watershed approach and the value of working at a watershed level.  

*	Principles of watershed management (HTML version), (PDF version, 2.1MB, 25 pages)
	Sustaining healthy aquatic ecosystems (PDF version only, 278KB, 18 pages)
*	Ecosystem services: benefits to human societies (PDF version only, 542KB, 18 pages)
	Why watersheds? (HTML version only)
	Ohio's virtual watershed tour (HTML version only)

Watershed Ecology Modules
These modules show that watersheds are natural systems that provide substantial benefits to people and the environment when they are kept in good condition.

*	Introduction to watershed ecology (HTML version), (PDF version, 1.8MB, 37 pages)
*	Protecting instream flows: how much water does a river need? (HTML version), (PDF version, 1.2MB, 22 pages)
*	Stream corridor structure (HTML version), (PDF version, 8.0MB, 34 pages)
	Biodiversity and ecosystem functioning: maintaining natural life support processes (PDF version only, 968KB, 14 pages)
	Birds: bellwethers of watershed health (HTML version), (PDF version, 1.7MB, 24 pages)
	Wetland functions and values (HTML version), (PDF version, 1.3MB, 23 pages)
	Understanding lake ecology (HTML version), (PDF version, 871KB, 57 pages)
	The role of nearshore ecosystems as fish and shellfish nurseries (PDF version only, 186KB, 14 pages)

Watershed Change Modules
These modules describe both natural and human-induced changes in watersheds, and compare normal changes with changes of concern.

*	Agents of watershed change (HTML version), (PDF version, 3.2MB, 49 pages)
	Growth and Water Resources (HTML version only) (PDF version, 3.6MB, 29 pages)
*	Nonpoint source pollution with Nitrogen and Phosphorus (PDF version only, 472KB, 14 pages)
	Invasive non-native species (HTML version only)
	Human alteration of the global Nitrogen cycle (PDF version only, 878KB, 17 pages)
	Biotic invasions: causes, epidemiology, global consequences and control (PDF version only, 349KB, 22 pages)
	Nutrient pollution of coastal rivers, bays, and seas (PDF version only, 947KB, 17 pages)
	Effects of aquaculture on world fish supplies(PDF version only, 231KB, 14 pages)

Analysis and Planning Modules
These modules address how watershed planning, monitoring and assessment are important first steps toward solving problems.

*	Introduction to the watershed planning process (HTML version), (PDF version, 1.3MB, 28 pages)
*	Overview of watershed monitoring (HTML version), (PDF version, 4.3MB, 33 pages)
	Rapid bioassessment protocols (HTML version), (PDF version, 2.0MB, 34 pages)
	Watershed ecological risk assessment (HTML version), (PDF version, 1.9MB, 32 pages)
	Watershed modeling (HTML version), (PDF version, 8.9MB, 35 pages)
	Fundamentals of the Rosgen Stream Classification System (HTML Version Only)

Management Practices Modules
These modules show how watershed management challenges such as urban runoff, cropland management, forestry and other issues are addressed by techniques that reduce environmental impacts.

*	Eight tools of watershed protection in developing areas (HTML version), (PDF version, 2.7MB, 30 pages)
*	Agricultural management practices for water quality protection(HTML version), (PDF version, 2.7MB, 54 pages)
*	Forestry Best Management Practices in watersheds (HTML version), (PDF version, 4.9MB, 47 pages)
	Stream corridor restoration tools (HTML version only)
	Restoration: what's right/wrong with this picture? (HTML version only)
	Introduction to EPA's drinking water source protection programs (PDF version only, 4.5MB, 119 pages)
	Source water protection: Best Management Practices and other measures for protecting drinking water supplies (PDF version only, 3.6MB, 125 pages)
	Controlling underground injection of wastewater (PDF version only, 2.1MB, 65 pages)
	Advanced drinking water technology workshop (Powerpoint version for web)
	Managing transient non-community drinking water systems (Powerpoint version for web)
	Applying ecological principles to management of the U.S. national forests (PDF version only, 1.1MB, 22 pages)
	Ecological principles for managing land use (PDF version only, 579KB, 12 pages)

Community/Social/Water Law Modules
These modules cover social issues, communications, relevant laws and regulations. They concentrate on the human element of watershed management.

*	Getting in step: a guide to effective outreach in your watershed (HTML version), (PDF version, 2.4MB, 49 pages)
*	Top ten watershed lessons learned (PDF version, 11.5MB, 85 pages)
*	Introduction to the Clean Water Act (HTML version), (PDF version, 4.3MB, 70 pages)
	Introduction to the Safe Drinking Water Act of 1996 (Powerpoint version), (PDF version, 1.9MB, 100 pages)
	Water in a changing world (PDF version only, 671KB, 18 pages)
	Statewide watershed management executive overview (HTML version), (PDF version, 1.6MB, 21 pages)
	Economics of sustainability (PDF version only, 815KB, 61 pages)
	Monitoring consortiums (HTML version only)
	Introduction to public water systems (PDF version only, 2.8MB, 125 pages)
	Grade K through 12 watershed learning links (HTML version only)