First, diagnose
Interior drainage near the St. Joseph River corridor has to be sized for a genuinely high water table, not just occasional storm runoff.
The full scope
- Drain capacity sized for a high water table
- Routing that accounts for river-corridor soil
- Compatibility with the existing floor and footing
- Discharge kept well clear of the house
- Access points for later servicing
Worth noting locally
Homes in South Bend's older riverside districts, including Chapin Park, were often built before modern interior drainage was standard.