Environmental Rules in Blue Earth County, MN (2026)
4 rules for unincorporated Blue Earth County, Minnesota.
Verified from official government sources
Stormwater Management
Blue Earth County Code Sec. 6-621 bans discharging pollutants, other than stormwater, into the county's storm sewer system, or MS4, and Sec. 6-622 bans illicit connections to that system. Violating the article is a misdemeanor under Sec. 6-646, punishable by up to a $1,000 fine, 90 days in jail, or both, with each day of violation a separate offense.
Blue Earth County Stormwater Discharge Rules
Some RestrictionsBlue Earth County Code §§ 6-621, 6-622, 6-646
(a)No person shall throw, drain, or otherwise discharge, cause, or allow others under its control to throw, drain, or otherwise discharge into the MS4 pollutants or waters containing any pollutants, other than stormwater. ... (a)The construction, use, maintenance or continued existence of illicit connections to the storm drainage system is prohibited. ... Any person violating the provisions of ...
Erosion Control
In unincorporated Blue Earth County, section 24-304 requires an approved stormwater management plan before any new development covers or replaces vegetation with an acre or more of impervious surface, and it sets numeric limits on how much fill can be moved without an interim use permit. Sidewalks, trails and road resurfacing are exempt.
Blue Earth County Erosion Control Rules
Some RestrictionsBlue Earth County Code § 24-304
Sec. 24-304. - Erosion control. (a)Generally. The county hereby adopts by reference Minn. Stats. §§ 103B.301—103B.355 as amended, for the purpose of managing water retention.(b)Impervious surface over one acre. New development that covers or replaces surface vegetation with an impervious coverage of one acre or more may not take place without the implementation of an approved stormwater managem...
Flood Zones
In unincorporated Blue Earth County, a zoning administrator permit is required before building, filling, fencing, or otherwise developing land in the floodway, flood fringe or general floodplain district. Farm fences are exempt, but pools, decks and utility work are not. Violations become a public nuisance and misdemeanor prosecuted under Code Sec. 8-153.
Blue Earth County Floodplain Development Permit
Some RestrictionsBlue Earth County Code § 8-61
A permit must be obtained from the zoning administrator to verify compliance with all applicable standards outlined in this chapter prior to the following uses or activities: (1)The erection, addition, modification, rehabilitation, repair, or alteration of any building, structure, or portion thereof. ... (2)The construction of a fence, pool, deck, or placement of a permanent object that may cau...
Flood Elevation Requirements
Blue Earth County requires new construction in the flood fringe district to be elevated to the regulatory flood protection elevation, defined as one and one-half feet above the base flood elevation. Critical facilities must sit even higher: at least two feet above base flood, per Code Secs. 8-41 and 8-63.
Blue Earth County Flood Elevation Freeboard Rule
Some RestrictionsBlue Earth County Code §§ 8-41, 8-63
Regulatory flood protection elevation (RFPE). An elevation that is one and one-half feet above the elevation of the base flood. ... (d)Be constructed with heating, ventilation, duct work, and air conditioning equipment and other service facilities elevated at least up to the regulatory flood protection elevation (RFPE). ... (3)Critical facilities shall be located so that the lowest floor is not...
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