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.

2019 Events

6th Annual NOW Festival June 22
The 6th Annual Northern Olentangy Watershed Festival is Saturday, June 22, at Mingo Park, 500 E. Lincoln Avenue, Delaware. The festival encourages land and water stewardship with a focus on the Upper Olentangy River Watershed. The event will have food trucks, raffle prizes, information booths from environmental organizations, a rain barrel raffle, a rubber duck race on the Olentangy River, live river critters, and more! Please mark your calendar for this awesome, annual program.
Event Schedule
For more information email Caroline Cicerchi.

Rain Barrel Workshops
The Public Utilities Department will host a rain barrel workshop during First Friday downtown on June 7. Participants will receive coupons for 50-gallon EarthMinded barrels.

Olentangy River Watershed Success Stories

Olentangy State Scenic River Night
Residents turned out for an evening along the Olentangy River at Mingo Park. It included kayaking, fishing and the movie, “Call of the Scenic River,” in celebration of the 50th Anniversary of the Ohio Scenic Rivers program.

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
Spring 2019
Winter 2019
Fall 2018
Summer 2018
Spring 2018


Public Utilities Department225 Cherry StreetEmail740-203-1905
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