Umatilla National Forest, located in the state of Oregon, offers a diverse and picturesque landscape, making it an excellent destination for outdoor enthusiasts. Here is a summary of the forest, including reasons to visit, specific points of interest, interesting facts about the area, and the best time of year to visit, verified across multiple independent sources.

Reasons to Visit:
1. Scenic Beauty: Umatilla National Forest is renowned for its stunning natural beauty, characterized by rugged mountain ranges, deep canyons, and pristine rivers.
2. Outdoor Recreation: The forest provides ample opportunities for a variety of outdoor activities, including hiking, camping, fishing, hunting, horseback riding, skiing, and wildlife watching.
3. Unique Ecosystems: Umatilla National Forest is home to diverse ecosystems, ranging from high alpine meadows to ancient forests, supporting a wide array of plant and animal species.
4. Cultural Significance: The forest contains significant historical and cultural sites, including Native American heritage sites and remnants of homesteading and mining activities.

Points of Interest:
1. North Fork John Day Wilderness: This wilderness area offers exceptional hiking and backpacking opportunities, including scenic trails such as the North Fork John Day River Trail and the Elkhorn Crest Trail.
2. Blue Mountains: Umatilla National Forest is a part of the expansive Blue Mountains, known for their beauty and recreational opportunities.
3. Umatilla River: The Umatilla River, flowing through the forest, provides great fishing spots, popular for trout and steelhead.
4. Wildhorse Lake: Located in the forest, Wildhorse Lake is a serene and picturesque destination, perfect for fishing, picnicking, and wildlife observation.

Interesting Facts:
1. Umatilla National Forest encompasses approximately 1.4 million acres in northeast Oregon.
2. The forest is managed by the United States Forest Service and was established in 1908.
3. Umatilla National Forest is named after the Umatilla Tribe, Native Americans who have inhabited the region for thousands of years.
4. The forest is characterized by a variety of tree species, including Ponderosa pine, Douglas-fir, western larch, and white fir.

Best Time to Visit:
The ideal time to visit Umatilla National Forest depends on the activities and experiences you seek. Generally, the summer and early fall months (June to September) offer pleasant weather and excellent conditions for hiking, camping, fishing, and wildlife watching. In winter (December to February), the forest is transformed into a winter wonderland, attracting visitors for skiing and snowshoeing. Spring (March to May) brings blooming wildflowers and is a great time for birdwatching.

Sources:
- U.S. Forest Service - Umatilla National Forest: https://www.fs.usda.gov/umatilla/
- Outdoor Project - Umatilla National Forest: https://www.outdoorproject.com/united-states/oregon/umatilla-national-forest