DETENTION AND RETENTION BASINS
Tucson Unified Development Code § 7.11
in effect7.11. DETENTION AND RETENTION BASINS
7.11.1. Detention and retention basins shall be:
A. Located in a common area, outside the boundaries of a residential lot
Lot
A tract of land bounded on all sides by property lines, of sufficient size to meet minimum zoning standards, with legal access to a public street.
;
B. Owned and maintained by the homeowners organization or management organization established by the developer;
C. Located within the perimeter wall, fence, or screening surrounding the FLD project site
Project Site
In general application, the area of the project. A site may be any number of contiguous lots, separated by no more than 600 feet, or it may be one lot. As applicable in Section 5.6, Airport Environs Zone (AEZ), the land area designated for development and managed as a single entity, exclusive of any abutting public right-of-way. The project site utilizes common facilities such as parking, structures, and vehicular and pedestrian access. Noncontiguous lots shall, at a minimum, be connected by pedestrian facilities.
boundaries, if provided; and,
D. Designed and constructed in compliance with the Stormwater Detention/Retention Manual.
7.11.2. Slopes
Slope
An inclined ground surface the inclination of which is expressed as a ratio of horizontal distance to vertical distance.
should be no steeper than four to one where water depths exceed two feet within a detention or retention basin so that a safety barrier is not required.
Source: City of Tucson, Tucson Code (Charter and General Ordinances) and Unified Development Code (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/tucson/latest/tucson_az_udc/0-0-0-6406Fetched: 10/28/2026