All Technical Manuals
Where can I find HCFCD drainage, hydrology, Atlas 14, LID, CAD, and flood-control manuals?
The official All Technical Manuals is published by Harris County Flood Control District and applies to projects in Harris County, Texas. Use the official link below to access the current version directly — requirements and forms can change, so confirm the current version with Harris County Flood Control District before any submittal.
What is this resource?
All Technical Manuals is a drainage / floodplain manuals published by Harris County Flood Control District for Harris County. The authoritative, current version is always the one published on the official page linked above.
When is this used?
This resource is used in Harris County development, permitting and engineering review processes. Whether it applies to a specific project depends on the current requirements published by Harris County Flood Control District — confirm the current requirements with the applicable jurisdiction before any submittal.
What may be required?
Requirements are defined solely by Harris County Flood Control District and are published on the official resource page — ALFA Engineering is not the issuing government agency. Engineering documents commonly prepared by ALFA for projects that use this resource include:
Related verified resources
What HCFCD Atlas 14 criteria apply to drainage and detention design?
How do I look up a Harris County property by address or account?
Where can I find Harris County low impact development criteria?
Where do I apply for or check a Harris County permit?
Related FAQs
Where can I find the current engineering design manual?
Use the official current manual or standards landing page — each jurisdiction keeps the current version on its own site.
ALFA can design the project using current jurisdictional criteria rather than outdated standards.
Where do I start my permit?
Start with the official city portal, then confirm which engineering disciplines your submittal requires.
ALFA can review the project scope before you spend time on an incomplete submittal.
Do I need a drainage study for my project?
Requirements depend on jurisdiction, acreage, impervious cover, outfall and floodplain conditions — always check the local criteria.
ALFA can determine the drainage-analysis scope and prepare calculations, exhibits and reports.
ALFA can identify which HCFCD criteria apply and prepare the drainage or floodplain analysis around those standards.
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External government and agency resources are provided for convenience. Requirements, forms and URLs may change. Confirm current requirements with the applicable jurisdiction. ALFA Engineering is not the issuing government agency.