The Ottavassdraget River is a river system located in Norway. It flows through the Ottadalen Valley and is known for its scenic beauty and rich natural resources. The river is part of the larger Glomma River basin and plays a vital role in the local ecosystem. The river is popular for various recreational activities, including fishing and kayaking. Its waters support diverse wildlife and contribute to the area's agriculture. The Ottavassdraget River is also significant for hydropower generation, providing renewable energy to the surrounding communities.