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Harris County Watersheds > Sims Bayou

Specific information about the changes in the Sims Bayou watershed will be available soon. For information about general changes between the current FEMA floodplain maps and the FEMA Preliminary Flood Insurance Rate Maps, please go to the Watershed main page.

One of the additional streams along Sims Bayou, C122-00-00, has not been released as part of the Preliminary FEMA FIRMs. For more information click here.
FEMA Preliminary Flood Insurance rate Maps Current FEMA Flood Insurance Rate Maps
1% (100-Yr) 0.2% (500-Yr) 1% (100-Yr) 0.2% (500-Yr)
13.0 sq. mi. 23.1 sq. mi. 13.8 sq. mi. 19.0 sq. mi.
TSARP Studied Stream Miles = 47.5 miles Current Studied Stream Miles = 47.6 miles
Drainage area 83 sq. mi.
TSARP 1% Rainfall 24hr duration 13.5 in
Total channel miles 117 mi
Allison: Total flooded area 29.7 sq. mi.
Allison: Flooded homes 6,000
Population 231,885

Data for areas inside of Harris County only.
  © 2008 FEMA and Harris County Flood Control District. All rights reserved. Terms & Conditions