• Vision
• Mapping Successes
• National Program Metrics
• FAQs

Mapping Successes: The Tropical Storm Allison Recovery Project (TSARP )

• Case Concentration
• Scope
• Mapping
• Outreach Activities
• Outreach Tools
• Best Practices Followed and Developed

Mapping:

Local emergency preparations prior to the arrival of Tropical Storm Allison were hindered by floodplain maps that had not been updated in more than 20 years. These maps lacked the benefit of more accurate information and recent technology. New hydrological and hydraulic analysis was conducted on the County’s watersheds. Approximately 1,100 stream miles in 22 watersheds were restudied and an additional 100 miles of stream were newly studied. Some watersheds were remapped based on the new topographic data. The study and preliminary recovery DFIRMs were completed by March 2003. Affected communities received two sets of the new maps.