Fish have always been an integral part of the Tahoe Region's aquatic systems and play an important role in the food webs of the Region's lakes and streams. The goal of the adopted threshold standards for fisheries resources is to improve aquatic habitat important for the growth, reproduction, and perpetuation of existing and threatened fish resources in the Tahoe Region. Past practices such as grazing, gravel mining, logging, and over-fishing drastically impacted Tahoe's fisheries. Regional programs such as stream habitat restoration projects and limiting pier development in high quality lake habitat aim to improve the Region's fish habitats.