William Logan

Aqua Sierra is a fisheries management and water quality consultancy serving clients with science-driven solutions for ponds, lakes, reservoirs, rivers, and other aquatic systems. With more than 30 years of experience, its team of biologists, engineers, and aquatic specialists develops tailored approaches that account for environmental conditions, wildlife, and client goals. The company’s services include fisheries and water quality testing, fish stocking and population surveys, lake and reservoir mapping, aquatic vegetation and invasive species control, and lake and stream design.

Aqua Sierra also designs and maintains aeration systems, develops trophy fisheries, and provides aquatic treatment systems, nutrient management, and biofouling control. For aquaculture and aquaponics projects, it offers guidance on system design, stocking, and water quality; its work also includes wastewater treatment and support for snowmaking systems. Using methods and technologies such as ozone-enhanced aeration, beneficial bacteria, and copper ion treatments, Aqua Sierra aims to address aquatic challenges while supporting sustainable resource management and conservation.

Its projects range from private ponds to larger fisheries and watershed initiatives