Environmental Rules in Sangamon County, IL (2026)

Sangamon County Code § 16.14.070

All subdivisions shall be developed with adequate surface drainage. Existing drainage ways and watercourses may not be altered and should become a part of the drainage plan. Surface water drainage improvements shall consist of storm sewers and/or open channels, inlets, catch basins and manholes designed and constructed to conform with standards established by the county engineer and shall adequ...

Sangamon County Code § 15.07.030

This section applies to the following types of land development or land disturbing activities. The following activities require an erosion control permit: Building and construction on any parcel of record. Any land disturbing activity affecting a surface of four thousand square feet or more. Excavation and/or filling two hundred cubic yards or more of ground, sand, or other excavation or fil...

Sangamon County Code § 16.72.050

No person, firm, corporation, or governmental body not exempted by state law shall commence any development in the floodplain without first obtaining a floodplain development permit from the Executive Director. The Executive Director shall determine if a floodplain development permit shall be issued based upon the standards and requirements provided herein in Sections 16.72.120, 16.72.130, and ...

Sangamon County Code § 16.72.120(B)

The following activities may be constructed without the individual permit required in subsection 16.72.120 (A)(1) in accordance with Statewide Permits issued by the Illinois Department of Natural Resources, Office of Water Resources provided the activities do not involve placement of fill, change of grade, or construction in the normal channel. Such activities must still meet the other requirem...

Sangamon County Code § 16.72.020

"FPE" or "Flood Protection Elevation" means the elevation of the base flood plus one foot at any given location in the floodplain. "Flood" means a general and temporary condition of inundation of normally dry land areas from the overflow, the unusual and rapid accumulation, or the runoff of surface waters from any source. "Flood fringe" means that portion of the floodplain outside of the ...