100 Year Flood Zone Map. Map Viewer Classic is a deprecated product and will be removed in Q1 of 2026 Consider opening this content in Map Viewer to ensure the best experience.
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A 1% annual risk of being flooded was the line FEMA drew FEMA is the official public source for flood maps for insurance purposes:FEMA's Flood Map Service CenterFEMA's National Flood Hazard LayerNOAA is responsible for producing flood forecast maps that combine precipitation data with USGS streamflow data:NWS - National Water Prediction Service: River forecasts and long range flood outlookCoastal Inundation Dashboard: Real-time and historical.
from 100-year flood, or shallow flooding areas with average depths of less than one foot or drainage areas less than 1 Consider opening this content in Map Viewer to ensure the best experience. For many, a National Flood Insurance Program's flood insurance policy could cost less than $400 per year
. A 1% annual risk of being flooded was the line FEMA drew FEMA is the official public source for flood maps for insurance purposes:FEMA's Flood Map Service CenterFEMA's National Flood Hazard LayerNOAA is responsible for producing flood forecast maps that combine precipitation data with USGS streamflow data:NWS - National Water Prediction Service: River forecasts and long range flood outlookCoastal Inundation Dashboard: Real-time and historical.
Houston 100 Year Floodplain Map Time Zones Map. A line had to be drawn somewhere to make the FEMA flood maps The areas with the lowest chance of flooding are labeled with a C or X.