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Long Lake Channel-Portage Lakes

Location and Description

Long Lake is part of the Portage Lakes State Park system located near Akron in Summit County. It was built in 1936 as a water supply reservoir for the Ohio and Erie Canal. The 104-foot long dam is classified as a Class II medium-hazard potential structure. A sudden and catastrophic failure of the Long Lake dam would likely result in flood water damage to nearby roadways with no expected probable loss of life.

Click here for more about the Dam Risk Reduction Program.

Long Lake Spillway Updates



Long Lake Channel Dam: Statistics (previous structure)

Prior to completion of dam risk reduction construction the dam included these characteristics.

  • Maximum Embankment Height: 9 feet
  • Length of Dam: 104 feet
  • Crest Width: 1 foot
  • Type of Structure: Concrete/Floodgates
  • Storage Capacity at Principal Spillway Elevation: 423 acre-feet
  • Emergency Spillway: None
  • Principal Spillway Elevation: 966.1 feet
  • Dam Classification: Class II
  • Dam Constructed: 1936
  • Lake Inflow: North Reservoir/Long Lake Channel
  • Total Drainage Area To Lake: 5.7 square miles
  • Lake Outflow: Tuscarawas River
  • Counties: Summit
  • Communities: Barberton, Coventry Township, Portage Lakes, Greene.

Safety Issues

Long Lake Dam has severe concrete deterioration in its spillway and has a significantly deteriorated floodgate system. Improvements are needed to meet current dam safety requirements.

Risk Reduction

ODNR is contracted with TetraTech to provide investigations, preliminary design alternatives and final design. Their recent investigations of the dam structure revealed various deficiencies that require comprehensive risk reduction remediation. Final design includes comprehensive risk reduction measures intended to bring the dam and its appurtenances into compliance with dam safety standards and industry best management practices.

Long Term Plan

Routine inspections and maintenance of the dam will continue. The project is part of a larger plan to bring dam structures within Portage Lakes State Park into regulatory compliance that additionally will include future remediation work on the East Reservoir and North Reservoir dams.


Media Coverage

To request more information you may write to:

Ohio Department of Natural Resources
Dam Risk Reduction Project
2045 Morse Road, Building E-3
Columbus, Ohio 43229

or send an email communication to