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Avoid Riding Below the OHWM

The Ordinary High Water Mark (OHWM) is a stain on rocks and trees along the shoreline of a waterway, defining where the highest water level usually is.

  • Areas below the OHWM, such as exposed shorelines and lake beds, are very important to ecosystems.
  • Because vehicles can easily damage these vulnerable areas, you should never operate below the OHWM.
  • Unit 5 of 8
  • Topic 6 of 6
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