The Salmon National Wild and Scenic River, located in the state of Idaho, offers visitors a captivating experience with its breathtaking scenery, diverse wildlife, and world-class recreational opportunities. Here is a summary of the river, including reasons to visit, points of interest, interesting facts, and the best time to plan your trip, verified through multiple independent sources.

Reasons to Visit:
1. Scenic Beauty: The Salmon River winds its way through the rugged canyons of central Idaho, surrounded by towering mountains, lush forests, and crystal-clear waters. It provides a picturesque backdrop for outdoor enthusiasts and nature lovers.
2. Whitewater Rafting: The Salmon River offers thrilling whitewater rafting experiences suitable for all skill levels. From calm stretches perfect for beginners to challenging rapids that will satisfy adrenaline junkies, there is something for everyone.
3. Fishing: The river is known for its outstanding fishing opportunities, particularly for Chinook salmon and steelhead. Anglers can enjoy fly fishing or traditional fishing methods to catch these prized fish.
4. Wildlife Viewing: The Salmon River corridor provides habitat for a diverse range of wildlife, including bald eagles, bighorn sheep, black bears, river otters, and various species of fish. Wildlife enthusiasts will delight in the chance to observe these creatures in their natural environment.

Points of Interest:
1. The Frank Church-River of No Return Wilderness: As the largest designated wilderness in the contiguous United States, this vast area adjacent to the Salmon River offers unparalleled opportunities for hiking, camping, and exploring remote, untouched landscapes.
2. Shoup Bridge: This historic suspension bridge, built in 1931, spans the Salmon River and provides a unique glimpse into the region's past. It is worth a visit for its architectural significance and scenic views.
3. Salmon River Scenic Byway: A drive along this 165-mile-long byway offers stunning vistas of the Salmon River, geological wonders, and access to various recreational activities. It is a great way to explore the area at a leisurely pace.

Interesting Facts:
1. The Salmon River is often referred to as the "River of No Return" due to its rugged canyons and challenging terrain, which made it difficult for early settlers to navigate and return upstream.
2. The river is home to one of the longest-running steelhead research programs in the United States, which has helped to conserve and protect these fish populations.
3. Lewis and Clark expedition members, including Meriwether Lewis himself, explored the Salmon River region in 1805 during their famous expedition to the Pacific Northwest.

Best Time to Visit:
The best time to visit the Salmon National Wild and Scenic River depends on your preferred activities. Whitewater rafting enthusiasts should aim for late spring to early summer when the river's flow is at its peak. Fishing for Chinook salmon typically occurs from May to July, while steelhead fishing is most productive from August to October. Hiking and wildlife viewing can be enjoyed throughout the summer and early fall when the weather is pleasant.

Sources:
- Bureau of Land Management: Salmon River
- Visit Idaho: Salmon River
- USDA Forest Service: Salmon Wild and Scenic River