The Rajaji Tiger Reserve is located in Uttarakhand.

Explanation:

The Rajaji Tiger Reserve is a wildlife sanctuary and tiger reserve located in the state of Uttarakhand, India. It covers an area of approximately 820 square kilometers and is named after C. Rajagopalachari, who was popularly known as Rajaji and was the last Governor-General of India.

Here are some key points about the Rajaji Tiger Reserve:

1. Location: The reserve is situated in the Shivalik range of the Himalayas and spans across three districts of Uttarakhand - Haridwar, Dehradun, and Pauri Garhwal. It is located at the foothills of the Himalayas and is bordered by the Ganga River in the east.

2. Flora and Fauna: The Rajaji Tiger Reserve is known for its rich biodiversity and is home to a variety of flora and fauna. The reserve is characterized by dense forests, grasslands, and riverine ecosystems. It is known for its diverse range of wildlife, including tigers, elephants, leopards, bears, deer, and various species of birds.

3. Tiger Reserve: The Rajaji Tiger Reserve was established in 2015 by merging three wildlife sanctuaries - Rajaji National Park, Motichur Wildlife Sanctuary, and Chilla Wildlife Sanctuary. It was declared as a tiger reserve to protect the endangered Bengal tigers and their habitat.

4. Conservation Efforts: The reserve is actively involved in conservation efforts and wildlife management. It is a designated protected area under the Wildlife Protection Act of 1972, which prohibits hunting and other activities detrimental to wildlife. The reserve also conducts various research and monitoring programs to study and conserve its biodiversity.

5. Tourist Attractions: The Rajaji Tiger Reserve offers opportunities for wildlife safaris, birdwatching, and nature trails. Visitors can explore the reserve through organized jeep safaris or trekking routes. The reserve is known for its scenic beauty and offers a chance to witness a wide range of wildlife in their natural habitat.

In conclusion, the Rajaji Tiger Reserve is located in Uttarakhand and is known for its rich biodiversity, including the presence of tigers and other wildlife species. It serves as an important conservation area and a popular tourist destination for nature enthusiasts.