The Olentangy River Watershed
The Olentangy River flows 88.5 miles from its headwaters in Crawford and Richland County through Marion and Morrow County into the City of Delaware and ending in Franklin County at its confluence with the Scioto River. The Olentangy River has a drainage area of 536 square miles. Twenty-two miles of the Olentangy were designated a state Scenic River by the Ohio Department of Natural Resources in 1973. The designation runs from the Delaware Dam, north of the City, to the old Wilson Bridge Road in Worthington.

Upcoming 2018 Events

July 27: Olentangy State Scenic River Night
4-9:30 p.m. at Mingo Park, 500 E. Lincoln Avenue. Explore the Olentangy River, try kayaking, discover fish of the river, and enjoy a movie in celebration of the 50th Anniversary of the Ohio Scenic Rivers program! Kick the night off with kayaking provided by the American Kayaking Association from 4 – 7:30pm. Equipment available first-come, first served for a $10 suggested donation. At 7:30pm, learn about Olentangy fish that you’ve never seen before with a live display by the Ohio Department of Natural Resources Scenic River Program. At 8:30pm, bring a picnic blanket to enjoy “Call of the Scenic River,” a documentary film about Ohio’s highest quality streams (50 minute run time). The fish display and film screening are free of charge and co-sponsored by the City of Delaware water program. Drop in for a portion of the evening or the entire night!

August 25: Olentangy River Clean-up
10 am-noon, beginning at Mingo Park and working south. Participants must register here: And there is a rain date of September 8.

Olentangy River Watershed Success Stories

Bio-Retention Cells on OWU Campus
Two bio-retention cells were installed in Spring 2018 on the campus of Ohio Wesleyan University, near Branch Rickey Arena. Bio-retention cells are stormwater utilize soil, mulch and vegetation to treat runoff from impervious surfaces such as rooftops, sidewalks and roadways. All species in the gardens are native to Ohio, which minimizes the need for maintenance, watering and pesticides. The plants have a high moisture and pollutant tolerance that will allow for the uptake of nutrients. The flowers were carefully selected by city staff to attract a diversity of wildlife including Monarch butterflies, bees, hummingbirds and other pollinator species. The project was funded through the City’s storm water fund in compliance with with Ohio EPA.

Earth Week 2018

  • A total of 18 volunteers collected a tire, carpeting and filled 26 large trash bags totaling more than 500 pounds during a Delaware Run clean-up.
  • Hayes High School students planted more than over 450 seedlings in the City’s Wetlands Park.
  • Storm drain labeling: seven volunteers labeled 89 storm drains, distributed 181 door hangers (on storm drain pollution) and collected trash from the drains

The Delaware, Knox, Marion, Morrow Joint Solid Waste District
The City of Delaware is part of the DKMM district, a political subdivision funded by a fee on solid waste generated within the district. DKMM funds programs that provide education about and alternatives to disposal of generated wastes.  These programs include: recycling, composting, education and awareness, solid waste environmental and monitoring and household hazardous waste, electronics and tire collections.  DKMM Special Collection Events

How Can You Protect Our Olentangy River Watershed?
Email City of Delaware Watershed/Sustainability Coordinator Caroline Cicerchi  or phone her at 740-203-1905.

Drains to River Brochure
Storm Water Quality Implementations Brochure
Pet Waste Removal Flyer
Sponsor a Rain Barrel

Watershed Newsletters
Fall 2018
Summer 2018
Spring 2018


Public Utilities Department225 Cherry StreetEmail740-203-1905
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