In Canada the boundaries for local, provincial, and federal governments seldom imitate or follow the dynamics and flows of natural systems; governance boundaries are often straight lines that cut through natural features such as watersheds, waterbodies, and wildlife habitats. However, the natural environment does not conform to governance boundaries and, therefore, the policies and land use in one jurisdiction inevitably has an impact on the environment of neighbouring jurisdictions and region. Due to the regional impacts felt by local development and municipal decision-making, a regional collaboration on environmental planning can help municipalities to reach their goals for environmental protection and sustainability. Case studies from across North America demonstrate how this approach has been successful in other areas of the continent in benefiting the environment and the quality of life of residents. Regional environmental strategies support long-term sustainability objectives and