Water

Information on storm water management and water conservation strategies.

http://www.stormwatercenter.net/
A technical clearinghouse that provides tools and techniques to protect watersheds, and to enhance and restore local water resources.

http://www.lid-stormwater.net/lid_techniques.htm
Find tools and strategies for innovative storm water management including rain barrels, green roofs, and pervious paving, from the Low Impact Development Center.

http://www.lowimpactdevelopment.org/raingarden_design/how2designraingarden.htm
Information on how to design a rain garden.

http://www.twdb.state.tx.us/publications/reports/RainwaterHarvestingManual_3rdedition.pdf
A PDF file including information on harvesting of rainwater.

http://www.toolbase.org/PDF/DesignGuides/PermeablePavement_TechSpec.pdf
Information on pervious surfaces, a porous surface that can temporarily store surface rainwater.

http://www.greenroofs.org/
Information on green roofs by a not-for-profit industry association. Includes a "Green Save" calculator.