![Three staff members in a creek working on different benthic macroinvertebrate sampling tasks](/common/uploads/grid_builder/midn/crop16_9/37D08138-A25B-4C8F-5B83CA49EE524C01.jpg?width=640&quality=90&mode=crop)
Coastal Plain & Piedmont Parks
Assessments of benthic macroinvertebrates can provide an excellent measure of aquatic ecosystem health.
![Staff searching for benthic macroinvertebrates in a rocky creek](/common/uploads/grid_builder/midn/crop16_9/38813388-AD40-3B10-452EF8C138D4C7F7.jpg?width=640&quality=90&mode=crop)
Shenandoah National Park
Staff at this park have sampled benthic macroinvertebrates for 25 years, initially in response to gypsy moth defoliation.
Last updated: December 17, 2020