Invasive species:

Below are three examples of invasive species in Ohio. One of the most common ones being Bush Honeysuckle. Invasive species become an issue because they grow fast and quickly and start to push out native species. This matters because the plant takes over what should be native growth and overwhelms an area as well as drain its resources.

Bush Honeysuckle:

Garlic Mustard:

Multiflora Rose:

Water quality (macro-invertebrate sampling):

Water quality sampling involves surveying specific macroinvertebrates (aquatic insects, crayfish) in the river. This is done in many waterways and is done by using a kick net near a riffle to collect samples of the macroinvertebrates. One person holds the kick net while another kicks up sediment by the riffle. The net is brought up to land and opened on a white shower curtain for a clean and pure background. The insects are then keyed (species ID) and kept in a container of river water until the process is done. This is repeated three times and the insects are released. A tally is kept of each species. Some of the popular species collected are pictured below.

What you can do:

As a citizen or member of OWA, you can take action to help protect the Olentangy Watershed. Be sure not to pollute (i.e. cigarette butts, chemicals, oils, debris). Try to go by the saying “Nothing but rain in the storm drains.”

You can also take eco-friendly measures like using a rain barrel to hold storm water and water plants at the same time. Other options to help are plant native plants in your local or home area, pick up after your pet in parks using the DOGIPOT stations located in parks and walking stations, use electric charging stations for an electric car if provided, walk or carpool instead of drive, and try to stay informed about events going on that educate and inform the public on environmental issues.

Existing reports:

Olentangy River TMDL Report

Olentangy WAP (Watershed Action Plan-Olentangy River)


Map of the Olentangy Watershed (Purple is the Upper Olentangy)



Be the Change for Clean Water is working to bring together ten counties along with many partners to provide education, resources, and various opportunities to “be the change for clean water.”

Some of the messages they convey are: Farm 4R Future, Interrupt surface Runoff and Tile Drainage, Keep Storm Drains Clean, Infiltrate Storm Water, and Manage your Home Sewage Treatment System.