The information in the Flood Control District of Maricopa County (FCDMC) Online Library is made available as a free public service, without express or implied warranties of any kind, and subject to the following.

FCDMC disclaims any responsibility and makes no representations or warranties as to the quality, accuracy, content, or completeness of any information contained in the online library. Assessing accuracy and reliability of information is the responsibility of the user. FCDMC shall not be liable for damages of any nature resulting from the use or misuse of information obtained here.

Information viewed, downloaded, printed or copied shall not be modified and is to be used solely for non-commercial purposes. FCDMC makes no warranty that materials contained here are free of copyright claims or other restrictions or limitations on free use or display.

Documents contained here may or may not be the most recent versions of the data, and some may be marked DRAFT, with no finalized version available.

For questions, please contact the Flood Control District Librarian at:

Search our Library Catalog


The online library catalog search shows engineering documents such as studies, reports, technical resources, structure plans, and drainage study maps that are available for viewing at the Flood Control District (District) offices and, in many cases, that can be downloaded directly. No physical materials can be checked out from the District, but uncopyrighted materials may be copied at the current reprographic rates or downloaded and printed subject to specified usage terms. *GIS request costs will vary and for information on purchasing Geographic Information Systems (GIS) data, please visit the GIS Data Requests page.

FCD Library Search

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Commonly Downloaded Files

  1. Drainage Design Manual for Maricopa County, Volume I Hydrology - revised July 6, 2023 (PDF)
  2. Drainage Design Manual for Maricopa County, Volume II Hydraulics - revised Dec. 14, 2018 (PDF)
  3. Drainage Design Manual for Maricopa County, Volume III Erosion - revised July 30, 2018 (PDF)
  4. Drainage Policies and Standards Manual for Maricopa County - revised Aug. 22, 2018 (PDF)
  5. Standard Details (PDF)
  6. Standard Procedures (PDF)

For general information regarding documents located in the library, contact us at:

Flood Control District of Maricopa County
2801 W. Durango St.
Phoenix, AZ 85009
p: 602-506-1501
f: 602-506-4601

Other Resources