Category Archives: Dam Building Basics

Dam built by Big Ditch Aquatecture for water storage and flood control.

The best soils for dam building: clay, rock, and everything in between

Short answer: heavy clay with a plasticity index above 15 is the best soil for building a farm dam. It compacts tight, holds water without treatment, and seals well under load. Sandy loam, gravelly subsoil, and anything with high organic content will cause you problems — the wall leaks or it will not compact properly …