What is the Ordinary High Water Mark used to identify?

The Ordinary High Water Mark (OHWM) is a crucial concept in understanding water bodies and their interaction with the surrounding land. It is primarily used to identify the point where water has reached at a certain level during normal high-water conditions, which often results in changes to the appearance or characteristics of the shoreline. This mark serves as an important indicator for legal and regulatory purposes, particularly in environmental protection and land-use planning, as it helps determine the extent of jurisdictional waters and often affects issues related to land development and conservation.

This understanding is essential when considering the management of natural resources and protecting ecosystems, as areas above this mark may be subject to different regulations compared to those below it, which are typically considered more directly influenced by water. The significance of the OHWM lies not only in legal definitions but also in its ecological implications, guiding how and where development can occur near waterways while ensuring the preservation of vital habitats.