Environmental Rules in Tazewell County, IL (2026)
4 rules for unincorporated Tazewell County, Illinois.
Verified from official government sources
Stormwater Management
Tazewell County's erosion control chapter requires permanent stormwater controls on qualifying projects to hold post-development peak discharge at or below pre-development levels for the two-year and 25-year storm events, and makes the property owner responsible for keeping those controls working under §151.03(B) and §151.07.
Tazewell County stormwater control standards
Some RestrictionsTazewell County Code of Ordinances § 151.03(B); § 151.07
(B) Permanent stormwater control measures. All stormwater controls shall be designed so that the peak discharge rate from the permitted area resulting from the two-year and 25-year frequency storm events for the post-project condition do not exceed the corresponding storm event peak discharges for the pre-project condition. Evaluation of submitted plans shall be based on the Stormwater Design...
Erosion Control
Tazewell County requires an erosion and sediment control permit before disturbing land anywhere in the county's jurisdiction, covering new single- and two-family home construction and any project disturbing 5,000 square feet or more, with exceptions for normal farming and routine road or utility maintenance under §151.02.
Tazewell County erosion and sediment control permit
Some RestrictionsTazewell County Code of Ordinances § 151.02(A); § 151.05
(A) All projects within the boundaries and jurisdiction of the county. No land surface shall be disturbed unless an erosion and sediment control permit or an erosion sediment and stormwater control permit has first been issued for that project, except as follows: (1) Land disturbing activities which do not involve the construction of any new single- or two- family dwellings, and for which the...
Flood Zones
Tazewell County requires a development permit from the Floodplain Administrator before any construction, fill, or substantial improvement begins in a mapped floodplain within the unincorporated county, under Chapter 152. Critical facilities face a stricter 0.2% annual chance flood elevation test. Building without a permit draws fines and a title notice under Section 152.99.
Tazewell County Floodplain Development Permit
Some RestrictionsTazewell County Code of Ordinances § 152.05
(A) Development permits. (1) No person, firm, corporation, or governmental body, not exempted by law, shall commence any development in the floodplain without first obtaining a development permit from the Floodplain Administrator. (2) No person, firm, corporation, or governmental body shall commence any development of a critical facility on land below the 0.2% annual chance flood elevation with...
Flood Elevation Requirements
Tazewell County's floodplain code sets a Flood Protection Elevation two feet above the base flood elevation, and Section 152.06 requires new construction and substantially improved buildings in the floodplain to have their lowest floor, including the basement, built at or above that elevation.
Tazewell County Flood Protection Elevation Rule
Some RestrictionsTazewell County Code of Ordinances § 152.02
FLOOD PROTECTION ELEVATION (FPE). The elevation of the base flood plus two feet of freeboard at any given location in the floodplain. In an AO Zone the FPE is the depth of the zone shown on the FIRM plus one foot (or a higher standard of two or three feet). In Zone AO areas with no elevations specified on the FIRM, the structure shall have the lowest floor, including basement, elevated at least...
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