- Handbook of Texas Online - Current and historical information about Harris County.
- 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.
- 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.
- Clear Lake Area (10)
- The Villages (2)
