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Harris County Watersheds > Cypress Creek

Specific information about the changes in the Cypress Creek 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.

Two of the additional streams along Little Cypress Creek, L120-00-00 and L120-00-01, have 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)
55.0 sq. mi. 76.8 sq. mi. 46.6 sq. mi. 57.1 sq. mi.
TSARP Studied Stream Miles = 179.1 miles Current Studied Stream Miles = 174.8 miles
Drainage area 205 sq. mi.
TSARP 1% Rainfall 24hr duration 13.2 in
Total channel miles 240 mi
Allison: Total flooded area 32.9 sq. mi.
Allison: Flooded homes 1,000
Population 216,587

Data for areas inside of Harris County only.
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