Riverside Park in Guelph, Ontario, is built beside the Speed River, and it is one of the oldest parks in Ontario. It forms part of an attempted natural buffer along the Speed: "OPIRG-Guelph and other community groups have worked, in partnership with the City to rehabilitate the local river environment. Today, the river's edge is allowed to naturalize, benefiting the environment and saving maintenance. The City of Guelph's River Systems Management Plan is a positive approach to river management vision is to protect the rivers' role within the city, by featuring them in urban design, and enhancing and protecting ecological diversity, while providing beneficial uses for the community." Chemical pesticides, herbicides and fertilizers have been abandoned, in an effort of produce a narrow buffer strip within the thirty meter "riparian zone" between the rivers and their surrounding parklands, including river paths. "The buffer provides food, habitat, and a corridor for wildlife, as well as improving water quality by minimizing erosion, acting as a filter and providing shade, to lower water temperature", increasing oxygen, thus decreasing algae and bacterial contents.