Land Planning and Earthworks

Regenerative community design begins with the land. Before buildings are sited, the designer must understand the land’s topography, hydrology, soils, vegetation, and ecological context. The site analysis described in Chapter 2 applies equally to community-scale projects, and at this scale it becomes even more important because the earthworks and land use decisions made at the outset will shape the community’s relationship with its landscape for decades.

Earthworks — the reshaping of the land through cuts, fills, swales, berms, ponds, and terraces — are a primary tool for regenerative land development. The goal of earthworks design is to slow the movement of water across the landscape, allowing it to infiltrate into the soil and recharge groundwater rather than running off as erosion-causing surface flow. This is accomplished primarily through swales (level channels cut across slopes that capture runoff and allow it to infiltrate) and berms (earthen mounds that direct and retain water). Properly designed earthworks can transform degraded land into a productive landscape over time, rebuilding soil health and supporting the establishment of food forests and other productive plantings.

Pond design is a related component of earthworks: ponds harvest surface runoff, provide habitat for beneficial insects and wildlife, moderate microclimate through evaporative cooling, and can supply water for irrigation, aquaculture, and fire protection. A series of ponds at descending elevations, each capturing overflow from the one above and distributing water through swales and berms, creates a cascading water harvesting system that maximizes the retention and use of every rainfall event.