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 have been drafted and public review has begun.

Current Status of Stream Flow Regulations and Implementation

*NEW* (May 15, 2015)

Proposed Stream Flow Classifications for the
South Central Coastal River Basin

The proposed stream flow classifications for the South Central Coastal River Basin have been developed as of May 15, 2015.

Public Notice of Proposed Stream Flow Classifications South Central Coastal River Basin

Map of Proposed Stream Flow Classification of the South Central Coastal River Basin

 


Attention: Owners or Operators of Dams

Initial Reporting for Dams on Classified Streams in the Southeast Coastal, Pawcatuck and Thames River Basin

Owners or operators of certain dams located in the Southeast Coastal, Pawcatuck or Thames River Basins (approximately the eastern third of the state) 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 October 7, 2015. This includes dams on river and stream segments in the following towns: Andover, Ashford, Bolton, Bozrah, Brooklyn, Canterbury, Chaplin, Colchester, Columbia, Coventry, East Lyme, Eastford, Franklin, Griswold, Groton, Hampton, Hebron, Killingly, Lebanon, Ledyard, Lisbon, Mansfield, Montville, New London, North Stonington, Norwich, Old Lyme, Plainfield, Pomfret, Preston, Putnam, Salem, Scotland, Sprague, Stafford, Sterling, Stonington, Thompson, Tolland, Union, Vernon, Voluntown, Waterford, Willington, Windham, and Woodstock.

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)

Interactive Map of Final Stream Flow Classifications for the Southeast Coastal, Pawcatuck and Thames River Basins

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

River and Stream Flow Classifications for the Southeast Coastal, Pawcatuck and Thames River Major Basins 10/7/14

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
Planning and Standards 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 29, 2015