Minnesota

Buying Land in Cottonwood County, Minnesota

Cottonwood County, seat Windom, is prairie farm country in southwestern Minnesota, part of the Heron Lake watershed that was historically wetland prairie before extensive tile drainage made it some of the state's most productive farmland. The county administers its own Zoning Ordinance No. 28 with a shoreland regulations section, and its Board of Commissioners doubles as the statutory County Drainage Authority over a network of county drainage ditches -- a real, checkable layer of assessments and obligations on agricultural land here that a standard zoning or title search won't necessarily surface.

Countywide Zoning With a Small-Water-Body Shoreland Exemption

Generally favorable

Cottonwood County administers Zoning Ordinance No. 28, which includes a dedicated Shoreland District separate from its Agricultural, Floodplain, Residential, Commercial, and Industrial districts, set out in Section 17 of the ordinance. Consistent with Minnesota Rule, the county's ordinance provides that no lake, pond, or flowage under 25 acres needs to be shoreland-regulated -- a real exemption in a county without many large lakes, meaning many smaller water bodies here may fall outside the shoreland framework described on our Minnesota state page entirely. For agricultural land within a shore impact zone that does apply, the ordinance requires a 50-foot buffer strip of permanent vegetation from the ordinary high water level, unless a developed conservation plan is in place. Confirm a specific water body's size and shoreland status directly with the county before assuming standard shoreland setbacks apply.

Wetland Conservation Act: County Environmental Office, With SWCD Support

Generally favorable

Cottonwood County's Environmental Office administers Wetland Conservation Act permitting locally, with a named WCA contact on staff, working out of the same Windom address as the Cottonwood Soil and Water Conservation District, which provides direct landowner outreach and technical support. Per the Cottonwood SWCD's own 2025 annual-report figures, the district made 25 landowner contacts regarding wetlands in 2025 and 6 exemptions were issued that year (4 agricultural, 1 drainage, 1 de minimis) -- a real, actively used permitting and exemption process rather than a dormant one. Confirm a specific parcel's wetland status and exemption eligibility directly with the county's Environmental Office.

A County-Run Drainage System Can Carry Real Assessments on Farmland

Case-by-case / verify locally

Cottonwood County sits within the roughly 472-square-mile Heron Lake watershed (shared with Nobles, Jackson, and Murray counties), a landscape that was historically wetland prairie with saturated, organically rich soils -- fertile once drained, which is why the region relies on an extensive network of surface ditches and subsurface tile drainage to remain farmable. Cottonwood County's own Board of Commissioners, acting as the statutory County Drainage Authority, administers county drainage ditches directly; County Ditch #20 and County Ditch #30, both established in 1919, recently underwent a formal Redetermination of Benefits -- their first since establishment. For a buyer of Cottonwood County farmland, this means a specific parcel may be subject to a county ditch system's benefit assessments, easements, or maintenance obligations that predate current ownership and are not always obvious from a standard title search -- ask the county's Environmental Office (which administers county ditches) directly whether a parcel is within an active county ditch system before purchase.

Zoning and shoreland: a small-water-body exemption worth knowing

Cottonwood County's Zoning Ordinance No. 28 establishes a Shoreland District, addressed in Section 17 of the ordinance, alongside separate Agricultural, Floodplain, Residential, Commercial, and Industrial districts. Consistent with Minnesota Rule, the ordinance provides that a lake, pond, or flowage smaller than 25 acres need not be shoreland-regulated at all, and a water body created by a private user where no shoreland previously existed may, at the governing body's discretion, be exempt from the ordinance entirely. Because Cottonwood County is prairie farm country without the large natural lakes common in other parts of Minnesota, this exemption meaningfully narrows how much of the county's water frontage actually falls under shoreland regulation compared to a lake-heavy county.

Where shoreland regulation does apply, the ordinance sets the agricultural shore impact zone at 50 feet from the ordinary high water level, and requires a 50-foot-wide buffer strip of permanent vegetation from public waters for agricultural land unless a developed conservation plan is in place. For any Cottonwood County parcel with a pond, stream, or drainage feature, confirm with the county's Planning and Zoning function (housed within the Environmental Office) whether that specific water body meets the 25-acre threshold for shoreland regulation and, if agricultural use is planned near it, what buffer requirements apply.

Wetlands and drainage: two separate systems that both matter on farmland

Cottonwood County's Environmental Office administers Wetland Conservation Act determinations locally, with the Cottonwood Soil and Water Conservation District (housed at the same Windom address) handling much of the direct landowner contact and technical work. This is an active program: per the SWCD's own 2025 annual report, staff made 25 landowner contacts regarding wetlands that year and issued 6 exemptions (4 agricultural, 1 drainage, 1 de minimis) -- a real, working process rather than a rarely-used formality, and one a buyer should engage with directly for any parcel with a wet area, since agricultural and drainage exemptions are common outcomes here but are not automatic.

Separately, and distinctly from wetland regulation, Cottonwood County sits within the historically wetland-prairie Heron Lake watershed -- roughly 472 square miles shared with Nobles, Jackson, and Murray counties -- where extensive tile drainage and county-maintained surface ditches made the region's rich soils farmable in the first place. The county's Board of Commissioners serves as the statutory County Drainage Authority, directly administering county drainage ditches; County Ditch #20 and County Ditch #30, both established back in 1919, recently went through their first formal Redetermination of Benefits since being established. A buyer should ask the county's Environmental Office whether a specific parcel lies within an established county ditch system, since parcels in such systems can carry ongoing benefit assessments and drainage easements that are a genuine, checkable due-diligence item on Cottonwood County farmland -- separate from, and in addition to, any Wetland Conservation Act question on the same parcel.

What we could and couldn't confirm

Cottonwood County's Zoning Ordinance No. 28, its Section 17 Shoreland Regulations, the 25-acre small-water-body shoreland exemption, and the 50-foot agricultural buffer requirement are drawn from the county's own published ordinance text. WCA administration through the county's Environmental Office, working alongside the Cottonwood SWCD, and the 2025 landowner-contact/exemption figures are drawn from the county's own site and the Cottonwood SWCD's own annual-report advertisement published via the Windom News. The Heron Lake watershed's four-county, roughly 472-square-mile scope and its historical wetland-prairie-to-tile-drained-farmland transition are drawn from SARE grant reporting; the county drainage ditch system, the Board of Commissioners' role as County Drainage Authority, and the specific 1919-established County Ditch #20/#30 Redetermination of Benefits are drawn from the county's own County Ditches page. We could not confirm a dedicated GIS/parcel-mapping department contact for the county and disclose that as a gap.

Verify directly with: Cottonwood County's Environmental Office (Planning and Zoning) for zoning district, shoreland classification, and Wetland Conservation Act questions on a specific parcel; the same office for whether a parcel lies within an established county drainage ditch system and its benefit assessments; and the Cottonwood County Assessor and Recorder for parcel-specific tax and title history

Who to Call Before Buying Land in Cottonwood County

We could not confirm a dedicated GIS/parcel-mapping department contact for Cottonwood County beyond its zoning and land-use map page, or a direct email for the Assessor or Recorder. The WCA contact person named in the county's own materials (Becky Buchholz) shares the general Environmental Office line above rather than a separate direct number.

Planning & Zoning