Levees / By county / Union County, SD
Levee systems in Union County, SD
2 systems on the federal register here, with 4,625 people recorded behind them.
| System | Location | Accreditation | People | Length |
|---|---|---|---|---|
| West side Big Sioux South of I-29 - Dakota Dunes | Dakota Dunes, Union County, South Dakota | Non-Accredited | 3,532 | 1.64 miles |
| North Sioux City-Union County - Big Sioux River RB | North Sioux City, Union County, South Dakota | Non-Accredited | 1,093 | 3.48 miles |
Source: USACE National Levee Database, refreshed 2026-09-10.