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Hydraulics and Drainage

Provides specialized engineering, technical support and policy advice on all storm water and water resource management issues related to the planning, permitting, design, construction and maintenance of transportation facilities.  

Requests for additional information should be addressed to:


Transportation Principal Engineer
Phone: (860) 594-3238 


Hydraulics & Drainage Documents
2000 ConnDOT Drainage Manual and Revisions
Hydrodynamic Separator Guidelines April 2010  (pdf 3.6mb)
Hydrodynamic Separator Special Provision  (pdf 591kb)  (doc 955kb)
Hydrodynamic Separator Design Data Form A  (pdf 22kb)    (xls 27kb)  
Hydrodynamic Separator Design Data Form B  (pdf 23kb)    (xls 27kb)  
INTENSITY-DURATION-FREQUENCY Table for Connecticut (pdf 18kb)
Related Documents
Design Measures for Stormwater Permits Phase II (pdf 144kb)
Flood Management General Certification 2012  (pdf 296kb)
Flood Management General Certification Request Form  (doc 38kb)
Flood Management Certification Municipal Application/Worksheets  (734kb)  
Flood Management Certification Municipal Signature Forms  (doc 52kb)  (pdf 17kb)  
Flood Management Certification MOU Reference Documents  (1.9mb)
Qualified Product List for ConnDOT Projects  (pdf 1mb) Includes erosion control matting
Major Traffic Generator Drainage Requirements
Log-Probability Paper: Color (pdf 279kb) / Black and White (pdf 208kb)
2D Hydraulic Modeling for Highways in the River Environment with Appendix (pdf 33mb
Related Links
Federal Highway Administration (FHWA) - Hydraulics Engineering
Connecticut Department of Environmental Protection (DEP)
Federal Emergency Management Agency (FEMA)
USGS Connecticut Water Science Center 
U.S. Army Corps of Engineers HEC
NRCS National Water and Climate Center - Hydraulics & Hydrology
National Oceanic and Atmospheric Administration (NOAA)
FishXing Website
Stream Corridor Restoration