Handbook of Texas Online - Current and historical information about Harris County. - http://www.tsha.utexas.edu/handbook/online/articles/HH/hch7.html
Harris-Galveston Coastal Subsidence District - Created for the purpose of ending subsidence, which contributes to flooding. Includes news, reports, conservation information, and details of measurement technology. - http://www.hgsubsidence.org/
Amphibians and Reptiles in Harris County - Texas Cooperative Wildlife Collection list of species found in the county. - http://wfscnet.tamu.edu/tcwc/checklist/HARRI101.HTM
Harris County Real-Time Rainfall Maps - Harris County Office of Emergency Management (HC-OEM) Rainfall maps and Advanced Flood Warning System for Harris County and the Greater Houston Area. - http://www.hcoem.org