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Jefferson City Zoning Code

CHAPTER 12

56 WATER, SEWER AND DRAINAGE REQUIREMENTS

§ 12.56.010 Water system.

Each development site shall be provided with potable water and fire hydrants, and mains shall be installed as required by the city fire marshal.
(DC § 10.340)

§ 12.56.020 Sanitary sewers-General provisions.

A. 
Sanitary sewers shall be installed to serve each new development and to connect developments to existing mains in accordance with the provisions of the Standard Specifications Manual.
B. 
The city engineer shall approval all sanitary sewer plans and proposed systems prior to issuance of development permits involving sewer service.
C. 
Proposed sewer system shall include consideration of additional development within the areas as projected by the Comprehensive Plan.
D. 
Proposed development shall make provisions for any right-of-way, easement, trunk line, or pumping station specifically designated in an approved master sewerage plan or capital improvements plan. The cost for such provisions shall be assessed as specified in the master sewerage plan or capital improvements plan.
E. 
Development may be restricted by the Planning Commission where a deficiency exists in the existing sewer system or portion thereof which cannot be rectified within the development and which, if not rectified, will result in a threat to public health or safety, surcharging of existing mains, or violations of state or federal standards pertaining to operation of the sewage treatment system.
(DC § 10.280)

§ 12.56.030 Storm drainage-General provisions.

The Planning Commission shall allow development only where adequate provisions for storm and flood water runoff have been made as determined by the city engineer. The stormwater drainage system shall be separate and independent of any sanitary sewerage system. Where possible, inlets shall be provided so surface water is not carried across any intersection or allowed to flood any street. Surface water drainage patterns shall be shown on every development proposal plan.
(DC § 10.290)

§ 12.56.040 Stormwater easements.

Where a subdivision is traversed by a watercourse, drainageway, channel or stream, there shall be provided a stormwater easement or drainage right-of-way conforming substantially with the lines of such watercourse and such further width as will be adequate for conveyance and maintenance. Streets or parkways parallel to watercourses may be required.
(DC § 10.300)

§ 12.56.050 Accommodation of upstream drainage.

A culvert or other drainage facility shall, and in each case be large enough, to accommodate potential runoff from its entire upstream drainage area whether inside or outside of the development. The city engineer shall determine the necessary size of the facility, based on the provisions of the construction standards and specifications and assuming conditions of maximum potential watershed development permitted by the Comprehensive Plan.
(DC § 10.310)

§ 12.56.060 Effect on downstream drainage.

Where it is anticipated by the city engineer that the additional runoff resulting from the development will overload an existing drainage facility, the Planning Commission shall withhold approval of the development until provisions have been made for improvement of said potential condition.
(DC § 10.320)

§ 12.56.070 Drainage management practices.

In the absence of a drainage basin master plan, a development may be required to employ drainage management practices approved by the city engineer which minimize the amount and rate of surface water runoff into receiving streams. Drainage management practices may include, but are not limited to:
A. 
Temporary ponding of water;
B. 
Permanent storage basins;
C. 
Minimization of impervious surfaces;
D. 
Emphasizing natural water percolation and natural drainageways;
E. 
Prevention of water flowing from the roadway in an uncontrolled fashion;
F. 
Stabilization of natural drainageways as necessary below drainage and culvert discharge points for a distance sufficient to convey the discharge without channel erosion;
G. 
Runoff from impervious surfaces shall be collected and transported to a natural drainageway with sufficient capacity to accept the discharge.
(DC § 10.330)