When professionally prepared and certified drainage plan not required.
Indianapolis-Marion County Revised Code § 561-225
in effectSec. 561-225. - When professionally prepared and certified drainage plan not required.
(a) A drainage plan that does not contain as much information as drainage plans prepared to fulfill the requirements of section 561-224 and that is not prepared or certified by a registered professional engineer, land surveyor or architect engaged in storm drainage design may be submitted when:
(1) No part of the parcel or property for which the drainage permit is required is in an impacted drainage area;
(2) The primary basis on which a drainage permit is required is the construction, enlargement or location, on a permanent foundation, of a one-family dwelling, two-family dwelling or accessory structure appurtenant to either a one- or two-family dwelling;
(3) The project results in less than one-half (½) of an acre of land disturbance; and
(4) The project does not alter drainage patterns at the property boundaries.
(b) The drainage plan must be submitted in a manner determined by the administrator as assigned by the deputy director of the division and shall indicate the nature and location of all work to be accomplished pursuant to a drainage permit. The drainage plan must be neat, accurate and readable. A copy of the drainage plan will remain on file in the division of construction and business services. The following information must be submitted for approval under this section:
(1) The legal description and the street address for the property;
(2) The dimensions and borders of the parcel;
(3) The name and address of the owner;
(4) An arrow indicating north;
(5) Location of all existing and proposed improvements, structures and paved areas on the site;
(6) Existing and proposed grading showing positive drainage by contouring or sufficient spot elevations;
(7) Location of all existing or proposed swales, ditches, culverts, drainage channels, surface and subsurface drainage devices and the direction of the flow; and
(8) Adequate and appropriate stormwater quality controls including, but not limited to, erosion and sediment controls, dewatering filter, concrete and cementitious washout containment, pollution prevention, inlet protection and other information as required by regulations adopted by the board of public works pursuant to this chapter.
The drainage plan shall include information necessary to demonstrate conformity with all drainage requirements of article III of this chapter. The plot map shall illustrate the surface drainage pattern of the site away from structures and the final distribution of surface water off-site, either preventing or planning for surface ponding.
(c) The approval of a drainage plan by the division under this section shall be valid for a period of one (1) year from the date such approval was granted, or until the drainage permit for which the plan was submitted is issued, whichever occurs first. However, prior to the issuance of the permit, if there are any material changes to an approved drainage plan or circumstances that cause the drainage plan to be inaccurate or incomplete, then a new or corrected drainage plan shall be submitted to and approved by the division as a precondition for obtaining a drainage permit. All conditions of the approval of a drainage plan shall be met prior to issuance of a permit. The administrator as assigned by the deputy director of the division of construction and business services may, for good cause shown in writing, extend the validity of the drainage plan approval for an additional period that is reasonable under the circumstances.
(d) Notwithstanding other provisions of this section, submission of a drainage plan shall not be required as a precondition for obtaining a drainage permit in the instance of a one- or two-family dwelling constructed in a subdivision for which a plat has been approved in accordance with chapter 741, article I of this Code, and for which a drainage plan meeting the requirements of section 561-224 has been approved and a permit issued under this chapter, so long as the permit applicant certifies that the land alteration shall be accomplished in compliance with the specifications and information found on the approved plat and on such drainage plan. Any deviations from the drainage provisions as approved in the plat and drainage plan for the subject plot must be submitted to the division for approval by the administrator of the division, and the administrator may require the submission of plans or other information relative to the deviation that may be required as a precondition to approval.
(e) Notwithstanding other provisions of this section, submission of a drainage plan shall not be required as a precondition for obtaining a drainage permit in the instance of residential alterations which do not exceed four hundred (400) square feet and does not connect to the city storm sewer system. The administrator as assigned by the deputy director of the division of construction and business services may require the submission of plans or other information relative to the development as a precondition for issuance of a permit.
(Code 1975, § 10½-34; G.O. 168, 1999, § 14; G.O. 15, 2001, § 54; G.O. 3, 2002, § 10; G.O. 63, 2009, § 40; G.O. 41, 2016, § 2; G.O. 16, 2022, § 15; G.O. 33, 2023, § 5)
Source: Consolidated City of Indianapolis and Marion County, Revised Code (Municode Library, library.municode.com)URL: https://library.municode.com/in/indianapolis_-_marion_county/codes/code_of_ordinances?nodeId=TITIIIPUHEWE_CH561DRSECO_ARTIIADEN_DIV2DRPE_S561-225WHPRPRCEDRPLNOREFetched: 10/27/2026