Regional Authorities and Special Districts - As enacted, makes revisions to the law relative to the Tennessee Duck River Development Agency. - Amends TCA Title 64, Chapter 1, Part 6.

This bill updates the laws governing the Tennessee Duck River Development Agency to establish a new fee system for water withdrawals. It requires counties, municipalities, and other entities that take water from the Duck River or its specific tributaries to pay a "withdrawal fee" based on the amount of water they use. The agency must set this fee with approval from a technical advisory committee, and the collected funds are intended to cover the agency's administrative costs and regional water projects. Additionally, the bill clarifies the authority of participating entities and requires the fee to be reviewed at least every two years.