DEEP: Connecticut Stream Flow Standards

Connecticut Stream Flow Standards and Regulations
 

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Introduction

In 2005 the Connecticut General Assembly passed Public Act 05-142 (CGS Section 26-141a and b) which required the Department of Energy and Environmental Protection (DEEP) to work with the Department of Public Health and stakeholders to update standards for maintaining minimum flows in rivers and streams. The act required these standards to balance river and stream ecology, wildlife and recreation while providing for public health, flood control, industry, public utilities, water supply, public safety, agriculture and other lawful uses of water.

Extensive effort by DEEP and numerous stakeholder work groups culminated in adoption of the Stream Flow Standards and Regulations on December 12, 2011. The process of classifying the streams and rivers of the State began with the Southeast Coastal, Pawcatuck and Thames Major basins and the stream flow classifications were finalized on October 7, 2014. Stream flow classifications for the South Central Coastal River Basin were finalized on September 6, 2016.  Stream flow classifications for the Connecticut River Basin have been drafted and public review has begun. 

NEW!

Proposed Stream Flow Classifications for the
Connecticut River Basin

Comment Period: March 1, 2017 - June 2, 2017

Public Notice of Proposed Stream Flow Classifications for the Connecticut River Basin

Map of Proposed Stream Flow Classifications for the Connecticut River Basin



      Map of Final Adopted Stream Flow Classifications  to date. 

NEW!

Attention: Owners or Operators of Dams

Initial Reporting for Dams on Classified Streams in the South Central Coastal Basin

Owners or operators of certain dams located in the South Central Coastal Basin MAY BE required to  submit an initial reporting form to the Department of Energy and Environmental Protection (DEEP) under the Stream Flow Standards and Regulations (26-141b-7(a) of the Regulations of Connecticut State Agencies) by September 6, 2017. This includes dams on river and stream segments in the following towns: Berlin, Bethany, Branford, Cheshire, Clinton, Durham, East Haven, Guilford, Haddam, Hamden, Killingworth, Madison, Meriden, Milford, New Haven, North Branford, North Haven, Old Saybrook, Orange, Plainville, Prospect, Southington, Wallingford, West Haven, Westbrook, Wolcott, and Woodbridge.

Only owners or operators of certain dams are required to submit the Stream Flow Reporting Form for Dams, as follows:

  • owners or operators of dams that will be required to make releases from the dam in accordance with the regulations (these are primarily large impoundments with consumptive withdrawals, like drinking water supply reservoirs); and 
  • certain owners or operators for which submission of the form is a provision of exemption from making releases (primarily water utilities, golf courses and recreational lake dam owners).

DEEP strongly encourages all owners or operators of dams in the subject basins to review the Stream Flow Reporting Form for Dams. The form takes owners or operators of dams through the exemptions and what (if anything) is required for each. You may therefore wish to begin by reviewing Part III, starting on page 3 of the Stream Flow Reporting Form for Dams, to determine if you meet any of the exemptions and if submission of the form is required before filling out the Stream Flow Reporting Form for Dams in its entirety.

Stream Flow Reporting Form for Dams (Word / PDF

Map of Final Adopted Stream Flow Classifications

Owners or operators of certain dams located in the Southeast Coastal, Pawcatuck or Thames River Basins were required to submit an initial reporting form to the DEEP by October 7, 2015.  Please review the information above to determine whether your site is subject to reporting requirements if you have not done so already.

Questions can be directed to DEEP at (860) 424-3020.

More specific additional information may be found at:

Stream Flow Regulations

Stream Flow Classification Process

Frequently Asked Questions

History of Regulation Development

Stream Flow Data Links and Background Documents

Contact Information:

If you have questions or for further information on the program, please contact us at:

Connecticut Department of Energy and Environmental Protection
Bureau of Water Protection and Land Reuse 
Water Planning & Management Division
79 Elm Street
Hartford, CT 06106-5127

Phone: (860) 424-3020
Email: deep.streamflowclass@ct.gov
Fax: (860) 424-4055
Web: www.ct.gov/deep/streamflow

 
Content Last Updated on May 25, 2017