Historical Information
1. Dam Name: Central Avenue Low-head Dam
2. Estimate height of dam in feet 4 ft. tall, 200 ft. length
3. Dam Type:
a) earthfill dam ____
b) concrete arch dam ____
c) gravity dam ____
d) masonry dam X
e) timber cribs ____
f) other, please explain: ____
4. Location Description: River mile 25.95 on the Olentangy River, Delaware Co., Delaware township, within the City of Delaware, South of the Central Avenue Bridge and North of the Winter Street Bridge
5. Year Constructed: 1955 (Year Removed 6/13/2008)
6. Dam Owner:
a) public X
b) private ____
c) abandoned: ____
7. Dam Function:
a) generate hydropower ____
b) irrigation ____
c) domestic water supply ____
d) navigation ____
e) flood control ____
f) recreation X
g) industrial water supply ____
h) unknown: ____
8. What repairs have been done to the dam? No known repairs have been preformed by the City of Delaware on this structure.
9. Reason(s) for Removal:
a) aesthetic enhancement: ____
b) fish and wildlife habitat improvement: X
c) cost savings ____
d) community revitalization: ____
e) public safety hazard: X
f) water quality improvement: X
g) recreational improvement: ____
h) alternative to dam ____
10. Project Sponsor (who initiated project): The City of Delaware, Ohio; ODNR DNAP, OEPA
11. Dam Removal Funding Sources:
a) federal X
b) state: ____
c) local governmental agencies X
d) other (please explain) _________
12. Cost of Dam Removal: $119,570.61
13. List all Contractors by Name, include Address and Telephone #:
- Baumann Enterprises, Inc., 4801 Chaincraft Rd, Garfield Heights OH 44125 (216)823-22442)
- EMH&T, 5500 New Albany Rd, Columbus Oh 43045 (614) 775-4500
14. Permits Required:
a) federal X
b) state____
c) municipal X
15. Dam Photographs:
a) before removal: X
b) during removal: Extreme weather conditions during winter removal time frame.
c) after removal: X
16. Problems Encountered:
a) before removal: None
b) during removal: None
c) after removal: None
17. Before Removal:
a) Estimated Reservoir Area in acres: 5.5 AC
b) Composition of river bed (e.g., sand, pebbles, boulders, bedrock): Bedrock
c) Types of Fish caught in the river________________________
d) Water Quality
i) behind the dam Good____ Fair: X Poor______
ii) below the dam Good X Fair ____ Poor______
18. Were any studies of the river conducted before the dam was removed? Yes
If yes, who conducted the studies and who is the contact for obtaining them?
EMH&T conducted flood plain modeling on the project area to determine new flood plain location after removal for insurance / zoning purposes.
19. Have studies been conducted on the river after the dam was removed to
document changes in the river?
Yes
If yes, who conducted the studies and who is the contact for obtaining them?
Ohio EPA’s Ecological Assessment team will be performing biological and water quality monitoring to examine and assess improvements to aquatic life use attainment