The National Park Service (NPS) is changing a rule on motorboat horsepower for Ozark National Scenic Riverways (ONSR).
The final rule was published in the Federal Register on Dec. 12, 2023, with implementation of the rule to begin Jan. 11, 2024.
Changes to motorboat rules were originally proposed in the 2015 ONSR General Management Plan (GMP) to create seasonal non-motorized zones, legalize the use of 60/40 horsepower (HP) motors, and establish a 150 HP limit between Big Spring and the park’s southern boundary on the Current River.



