3 links
Houston Geographic Description
texasbest.com
Geographical information about the City of Houston and its surrounding area.
Katy Prairie Conservancy
katyprairie.org
News and events, history, newsletters, membership and giving alternatives, and links.
Mothers for Clean Air
mothersforcleanair.org
Non-profit organization concerned with air pollution in the area and its effects on children's health. Provides newsletter, events, and air quality information.