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Indiana Department of Environmental Management

Wetlands, Lakes and Streams Regulation

Wetlands, Lakes & Streams > Featured Topics Featured Topics


  • 02/18/2015: Due to the reinstatement of five (5) Nationwide Permits by the Army Corps of Engineers, IDEM has modified the Section 401 Water Quality Certification which authorizes the use of the Nationwide Permits [PDF] in the state of Indiana. These five (5) Nationwide Permits have been approved and conditions have been placed on the activities to ensure compliance with Indiana’s water quality standards. The vast majority of conditions placed on these activities are no different than the conditions that were previously in effect when these activities were authorized by the Indiana Regional General Permit. The only new conditions are placed on Nationwide Permit 7 which has stabilization requirements that are specific to the outfall structures and Nationwide Permit 25 has a conditions that states structural discharges must span the low flow channel.





  • 07/11/2008: The U.S. EPA. Region 5 has requested Water Quality Certification for two National Pollution Discharge Elimination System (NPDES) general permits. One general permit, titled General Permit for Discharges Incidental to the Normal Operation of Commercial and Large Recreational Vessels, would authorize discharges from or associated with the operation of commercial vessels and large recreational vessels. A second general permit, titled General Permit for Discharges Associated with Recreational Vessel, would authorize discharges from or associated with the operation of smaller recreational vessels. Both general permits were published in the federal register at 73 FR 34296. U.S. EPA has additional information available on their Web site.