NOTICE: The DRAFT Hydraulics Manual was recently updated on June 21, 2010. The current draft date is June 2010. This draft is still undergoing revision, particularly in Chapters 8 and 11. The Lateral Erosion Guideline is going to be added to Chapter 11 of the Hydraulics Manual. The current DRAFT date for the Lateral Erosion Guideline is June 17, 2010.
Comments on the draft manual and the draft Lateral Erosion Guidelines
can be directed to:
Special Projects Branch Manager
Flood Control District of Maricopa County
2801 W. Durango Street
Phoenix, AZ 85009
It is preferred that comments be submitted to Mr. Loomis by e-mail.
The objective of the Drainage Design Manual for Maricopa County, Hydraulics, is to provide criteria and design guidance for storm drainage facilities in Maricopa County. This manual provides a convenient source of technical information that is specifically tailored to the unique hydrologic, environmental and social character of Maricopa County; and a consistent set of criteria that, when used by the local governing agencies and the land development community, will result in uniform drainage practices throughout the County.
The DRAFT Hydraulics Manual does not include any agency-specific policies and standards. It only contains technical guidance.
The EFFECTIVE Hydraulics Manual (January 28, 1996) is still in effect until further notice, unless the draft manual is specifically identified for use by an agency. For purposes of obtaining a drainage clearance, the Maricopa County Planning and Development Services (P&D) has adopted use of the 2009 draft Hydraulics Manual, as stated on the P&D web site at: http://www.maricopa.gov/planning/BuildingServices/DrainageReviewRequest.aspx
The effective version of the Manual is only available in a digital PDF (Portable Document File) format, which requires the free Adobe Reader to view. To save the document directly to your hard drive, right click on the link and select "Save Target as." If you do not already have the Adobe Reader, click on the following Get Adobe