Nemaha County, NE zoning map, flood zone and property lines by address
Free, no account. Or open the Nebraska map and tap a lot.
Towns in Nemaha County: Auburn.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Nemaha County has 14 FIRM panels, the newest effective October 2021; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Nemaha house comes from a licensed surveyor and is often on file with the county or city building office.
Property lines
The parcel outline, parcel number and mapped size come from the NebraskaMAP statewide parcel layer (from each county assessor), so a Nemaha lot shows the same lines the county assessor draws. Nemaha County covers about 260,673 acres of land and 1,474 acres of water.
Mapped lines are approximate. The Nemaha County assessor keeps the parcel record (Nemaha County website); a licensed surveyor sets the true corners.
Zoning
Nemaha County zones its unincorporated land, and Auburn zones the land inside its limits. ParcelSheet shows the use the county assessor lists for the lot and links the county zoning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under Nebraska's county zoning law (Neb. Rev. Stat. 23-114) and each city's zoning powers, local governments can allow an accessory dwelling unit on a lot with a house. Whether a Nemaha lot can add one depends on its district; the county zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Nemaha County is soil survey area NE127, Nemaha County, Nebraska, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Nemaha County must be registered with the Nebraska Department of Environment and Energy onsite wastewater program (Title 124).
Setbacks
Setbacks in Nemaha County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county zoning office gives them for the lot's district, and Auburn for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Nemaha lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Nemaha County?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Nemaha County has 14 panels, the newest effective October 2021. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Nemaha County?
Open the Nebraska map, type the address, and the parcel outline from the Nemaha County assessor shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Nemaha County?
Zoning in Nemaha County is set by the county for unincorporated land and by each city (such as Auburn) inside its own limits. ParcelSheet shows the use code the county assessor lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Nemaha County?
Under Nebraska's county zoning law (Neb. Rev. Stat. 23-114) and each city's zoning powers, counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Nemaha County ask the zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Nemaha County?
Yes. A new or changed septic system in Nemaha County must be registered with the Nebraska Department of Environment and Energy onsite wastewater program (Title 124). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area NE127 (Nemaha County, Nebraska).
What can I build on 5 acres in Nemaha County?
Zoning in Nemaha County is set by the county for unincorporated land and each city inside its own limits (such as Auburn). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the planning office has the district and its rules. See the Nemaha County website.
What are the residential setbacks in Nemaha County (2026)?
Setbacks in Nemaha County come from the zoning code of the county, or of the city when the lot is inside city limits: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the zoning office gives them for the district. See the Nemaha County website.
Next to Nemaha County: Johnson County, Otoe County, Pawnee County, Richardson County.
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