Storm Water Management

Storm Water Management Program                                                                                 

The National Pollutant Discharge Elimination system (NPDES) Phase II storm water program is a federal mandate to reduce storm water pollutant runoff into the Olentangy River. The City of Delaware has developed, with OEPA's approval, a storm water Management Plan (SWMP) to meet the Phase II regulations. The City must implement the Best Management Practices (BMP's) of this plan, including the following services; Public Education, Public Involvement, Elimination of Illicit Discharges, Construction Site Storm Water Runoff, Post-Construction Storm Water Management and Pollution Prevention.

Storm water pollution is real threat to the quality of water throughout the United States. According to the USEPA, National Water Quality Inventory Reports indicate that approximately 40 percent of surveyed surface waters did not meet water quality standards. Polluted storm water is one of the leading sources of this contamination. As an ongoing effort to help educate the public, please watch for storm water program announcements and participation in City of Delaware storm water events.

For more information on the NPDES Phase II program, please click on the links below or contact Brad Stanton, Director of Public Utilities, at 740-203-1900. Storm Water/Water Quality Service Request


Everyone lives in a watershed and the City of Delaware is located in the Olentangy River watershed. A watershed is an area of land that directs surface water and ground water towards a single body of water. A ridge separates one watershed from another and will drain the water in different directions.

Each watershed can be broken down into subwatersheds or increased into larger watersheds. If the Olentangy River watershed was broken into smaller subwatersheds, some residents in the City of Delaware would live in the Delaware Run subwatershed, while others would live in the Sugar Run subwatershed. There are several other small waterways connecting to the Olentangy River that would be additional subwatersheds.

If the Olentangy River watershed was increased into larger watersheds, the Delaware City residents could say they live in the Scioto River watershed. Since the Olentangy drains into the Scioto River this would be a true statement. This also makes our watershed the Ohio River, Mississippi River, and Gulf of Mexico.

upcoming storm water/watershed events

Month of June
Coloring contest for City of Delaware residents. Details listed below.

June 5th - Rain Barrel Workshop
@ First Friday Festivities downtown Delaware
6:00-9:00 pm

June 20th - NOW (Northern Olentangy Watershed) Festival
@ Mingo Park (500 E. Lincoln Ave, Delaware, OH 43015)
12:00 (noon)-3:00 pm    

July 11th - Whetstone River Clean-up
@ specific location TBD (contact Kristin Piper closer to date)
9:00-11:00 am

July 11th
 - Delaware Dam tour/rain garden and rain barrel workshops
@ Delaware Dam (3920 US Highway 23 North, Delaware, OH)
1:00 pm-?

August 15th - Olentangy River Clean-up
@ specific location TBD (contact Kristin Piper closer to date)
9:00-11:00 am


The 2nd annual Northern Olentangy Watershed (NOW) Festival is scheduled for Saturday, June 20th from noon until 3:00pm. The event will be held at Mingo Park by the shelter houses - if weather is nice or inside the gymnasium - if poor weather occurs that day. Booth attendees and sponsors include, Olentangy Watershed Alliance, ODNR – Division of Watercraft and Wildlife, Preservation Parks of Delaware County, ECO Center – in Morrow County, Del-Co Water Company, the Army Corps of Engineers, FLOW, Sierra Club, and several others. A rain garden maintenance workshop, rain barrel workshop, enviroscape model, plant filtration activity, canoe float, macroinvertebrate sampling (SQM), painted rain barrel raffle, and several other activities/events are scheduled throughout the day. 

The event is FREE to attend and all are welcome to join in the fun! We hope to see you there!

The City of Delaware is organizing a coloring contest for the month of June. All City of Delaware residents, age 3-12 are welcome to participate. There are three coloring pages to choose from that provide valuable practices which can improve our local water quality, if carried out by the residents.

Please only submit one completed page per child. On the back of each page, please write the child's name, age, and phone number so we can contact you, if he/she wins. There are two age categories: 3-6 and 7-12. One winner will be awarded in each age group. Those two children will be given a bag full of prizes.

The coloring pages can be downloaded and printed from this page (below) or picked up at the Delaware County District Library - Main Branch. Each page can be returned in several ways.
1. Dropped off at City Hall at either the Public Utilities' Billing Department or at the front desk
(located on the main floor at the front of the building) by 5:00pm on June 30th.
2. Dropped off at the Delaware County District Library - Main Branch, at the circulation desk
by 5:00pm on June 30th
3. Mail it to City of Delaware - WWTP, Attn: Kristin Piper, Watershed Coordinator,
225 Cherry Street, Delaware, Ohio 43015   (must be postmarked by June 30th)
4. Scan and e-mail it to Kristin Piper at Must be time
stamped by 5:00pm on June 30th

Click on these images to download coloring pages:






Have you seen the storm drain decals attached to any basins in the City of Delaware? These are to help the population realize that these catch basins drain directly to the Olentangy River, untreated. If someone decides to dump oil, paint, leaves, or other pollutants down the storm drains, it will negatively affect our water quality. This means that aquatic life could be severely harmed, as well as humans playing in, fishing in, or drinking these waters. If you would like to schedule an event to mark storm drains in your area, please contact Kristin Piper at 740-203-1905 or This event works great with a church group, boy/girl scout troop, friends, or family members.


reporting spills

If you notice a spill in our stormwater drains or waterways please call the Public Utilities Department at 740-203-1901 or the Fire Department at 740-203-1300.

permits and regulations

Storm Drainage Design Guidance     

Reports and documents

Stormwater Discharge Ordinance.pdf
Stormwater Management Plan
Illicit Discharge Detection and Elimination Plan
IDDE Plan Ordinance


Only Rain in the Drains         

Pet waste removal.pdf

Drug Free Drains.pdf

Sustainability Starts At Your Sink.pdf 

Stormwater quality Implementation.pdf 


Delaware Soil & Water Conservation