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Union County Dock provides access to Norris Lake, a impoundment on the Powell River in Speedwell, Tennessee. This is a large river system with significant elevation change and substantial water flow, classified as a Stream Order 7 waterway. The site offers boat access in an area known for fishing and recreation on one of East Tennessee's major water resources. The Powell River drainage basin spans 895 square miles and maintains average flows over 1,400 cubic feet per second, indicating a well-established water system suitable for various boating activities.