Ellettsville City Zoning Code
STORMWATER CONTROL
§ 152.160 APPLICABILITY.
The following design standards shall apply to lots and developments within the planning jurisdiction of the town, except as indicated, and all improvements shall be approved by a town official and/or engineer employed by the town.
(Ord. 03-05, § 813-05, passed 5-27-2003)
§ 152.161 STORMWATER DRAINAGE DESIGN.
The proposed development within a storm water drainage system shall be designed in accordance with the Monroe County drainage standards. Enclosed storm water control systems shall be utilized rather than surface control where possible. The drainage system shall consist of concrete curbs and gutters along all paved streets, pipes, stormwater inlets, catch basins, and flared pipe end-sections, together with surface stormwater control systems consisting of natural and engineered drainage ways, and stormwater detention areas. The system design shall be certified by a registered professional engineer or surveyor.
(Ord. 03-05, § 813-10, passed 5-27-2003)
§ 152.162 SURFACE STORMWATER CONTROL.
(A) Swales located in public stormwater easements shall be utilized for surface control of storm water. Swales shall have side slopes with a run/rise ratio of 3:1 or flatter.
(B) Easement width shall be as follows:
(1) Where swale depth is one foot or less, easement width shall be ten feet.
(2) Where swale depth is between one and two feet, easement width shall be 15 feet.
(3) Where swale depth is between two and three feet, easement width shall be 20 feet.
(Ord. 03-05, § 813-15, passed 5-27-2003)
§ 152.163 EXISTING SURFACE STORMWATER CONTROL SYSTEMS.
Where a proposed development or subdivision is traversed by an existing watercourse, drainage way, channel, or stream, there shall be provided a stormwater drainage easement conforming substantially with the lines of such watercourse, and with such further width or construction, or both, as is adequate for the purpose of maintaining the pre-development capacity of the watercourse or the post- development capacity if it is increased to facilitate improved stormwater management.
(Ord. 03-05, § 813-20, passed 5-27-2003)
§ 152.164 STORMWATER DETENTION.
(A) On-site stormwater detention shall be required in all residential and mobile home park developments of two or more acres, and in all non-residential developments.
(B) Storm water detention shall be in accordance with the Monroe County Drainage Ordinance.
(C) Side slopes shall have a run/rise ratio of 3:1 or flatter.
(Ord. 03-05, § 813-25, passed 5-27-2003)
§ 152.165 DRAINAGE IMPROVEMENTS ALONG RIGHTS-OF-WAY.
The petitioner shall furnish the following drainage improvements along public rights-of- way of the town for the particular development.
(A) Driveway drainage pipes. Metal, reinforced concrete, or polyethylene type –12 pipe in a specified size shall be installed as directed in drainage ditches and under driveways, with not less than 12 inches of aggregate coverage over the top of the pipe.
(B) Surface control. Where curb and gutter and/or underground drainage is not provided, a drainage swale shall be constructed running adjacent to and parallel with the street in a dedicated drainage easement with its low point at least 12 inches below the elevation of the sub grade of the pavement.
(C) Tile.
(1) Installation of field tile or other suitable conduit for drainage of roadside water shall be permitted; provided, that, the top of the aggregate cover over the pipe is at least 12 inches below the surface of the pavement adjacent to the tile or conduit.
(2) Tile shall be a minimum of 12 inches in diameter, however, tile size shall be modified as required by the installation.
(D) Tracing wire. Tracing wire shall be installed with all non-metallic pipes where both ends of the pipe are not visible from one point.
(Ord. 03-05, § 813-30, passed 5-27-2003)