Establish impervious surface standards to protect water quality
and fish and wildlife habitat and to protect against pollution of
navigable waters. Impervious surface standards of this chapter shall
apply to the construction, reconstruction, expansion, replacement,
or relocation of any impervious surface on a riparian lot or parcel
and any non-riparian lot or parcel that is located entirely within
300 feet of the ordinary high-water mark of any navigable waterway.
[Amended 4-18-2017 by Ord. No. 8-2017]
Except as allowed in §§
338-48 and
338-49, allow up to 15% impervious surface on the portion of a lot or parcel that is within 300 feet of the ordinary high-water mark.
[Amended 4-18-2017 by Ord. No. 8-2017]
A property may exceed the impervious surface standard under §
338-47, provided the following standards are met:
A. For properties where the general impervious surface standard applies under §
338-47, a property owner may have more than 15% impervious surface but not more than 30% impervious surface on the portion of a lot or parcel that is within 300 feet of the ordinary high-water mark.
B. For properties that exceed the standard under §
338-47 but do not exceed the maximum standard under §
338-48A, a permit can be issued for development with a mitigation plan that meets the standards found in Article
XII.
For existing impervious surfaces that were lawfully placed when constructed but do not comply with the impervious surface standard in §
338-47 or the maximum impervious surface standard in §
338-48, the property owner may do any of the following:
A. Maintain and repair the existing impervious surfaces;
B. Replace existing impervious surfaces with similar surfaces within
the three-dimensional space of the structure;
[Amended 12-21-2021 by Ord. No. 38-2021]
C. Relocate or modify an existing impervious surface with similar or
different impervious surface, provided that the relocation or modification
does not result in an increase in the percentage of impervious surface
that existed on the effective date of the County Shoreland Zoning
Ordinance, and the impervious surface meets the applicable setback
requirements in this chapter.
[Amended 11-12-2019 by Ord. No. 18-2019]
D. Note: The impervious surface standards in this section (changed to
reflect Ch. NR 115, Wis. Adm. Code) shall not be construed to supersede
other provisions in the County Shoreland Zoning Ordinance.
[Amended 11-12-2019 by Ord. No. 18-2019]
(1) All of the provisions of the County Shoreland Zoning Ordinance still
apply to new or existing development.