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NOTE: Surveys shown are the most recent available. For information regarding previous surveys, contact the Navigation Section.

 Hydrographic surveys are in Bentley Microstation V8i DGN format. Click on the self extracting ZIP file below and save to your hard drive. Open the survey in your CADD Software Product or Bentley (Free) View software. See Bentley website to obtain free viewer.

NOTE: Hydrographic surveys without a DGN file were most recently processed through eHydro using ArcGIS software. More information about eHydro products can be found in this PowerPoint.

 XYZ Data – ASCII (space delimited) bathymetry sounding data, sorted for minimum depths for printing within a scale dependent plot.

 Hydrographic Surveys, Survey Results / Channel Condition Reports are in PDF format.

Meta Data text file image Metadata file.

Connecticut Navigation Projects

The Corps has completed navigation projects at 28 different sites in Connecticut. These sites include rivers, bays, coves, and harbors that are used by commercial interests, fishermen, and the many recreational boaters that enjoy the intricate and fascinating Connecticut coastline. Initial work on many of the projects dates back to the 19th century. However, much of the navigational work in today's waterways has been constructed by the Corps within the past 50 years, costing an aggregate total of $20 million. Below are the Corps' navigation projects in Connecticut.
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Norwalk Harbor | Project Map | Channel Coordinates

Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
3/18/2009
Condition Survey
Complete Project Drawing
Meta Data text file image
4/11/2014 

After Dredge Survey 
Supplemental Project Drawing

 Meta Data text file image
 

Wilson Point Harbor | Project Map

 

Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
6/05/2018
Condition Survey
Complete Project Drawing
Meta Data text file image
 Black Rock Harbor | Project Map ,  | Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
7/9/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Branford Harbor  | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
4/28/2015
Condition Survey
Complete Project Drawing
Meta Data text file image
 Bridgeport Harbor | Survey Map , | Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
8/28/2020
Bridgeport Harbor, Main Ship Channel Condition Survey
Complete Project Drawing
8/28/2020 Bridgeport Harbor, Pequonnock River   Condition Survey
Complete Project Drawing
8/28/2020

Bridgeport Harbor, Yellow Mill River   Condition Survey
Complete Project Drawing
8/28/2020 Bridgeport Harbor, Johnsons River   Condition Survey
Complete Project Drawing
 Clinton Harbor | Project Map | Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
07/22/2019
After Dredge  Survey
Complete Project Drawing
Meta Data text file image
 Connecticut River Below Hartford, Middletown to Hartford | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
2/04/2021
Condition Survey
Complete Project Drawing
Meta Data text file image
 Connecticut River Below Hartford | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
4/25/2014
 Connecticut River Below Hartford Condition Survey
Complete Project Drawing
 3/21/2018 North Cove, Condition Survey
Complete Project Drawing
4/25/2014 Essex Shoal - Condition Survey
Complete Project Drawing
4/23/2014  Wethersfield Cove After Dredge Survey
Complete Project Drawing 
10/03/2018 Eight Mile River - Condition Survey
Complete Project Drawing
4/25/2014 

Eight Mile River - Condition Survey
Supplemental Project Drawing 
 Duck Island Harbor | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
3/20/2017
Condition Survey
Complete Project Drawing
Meta Data text file image
 Fivemile River Harbor  | Project Map
 
Publication  Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
08/15/2018
Condition Survey
Complete Project Drawing
Meta Data text file image
 Greenwich Harbor | Project Map | Channel Coordinates 
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
2/04/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Guilford Harbor | Project Map ,| Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
4/06/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Hay (West) Harbor, Fishers Island, | Project Map ,| Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
1/29/2021
Condition Survey
Complete Project Drawing
Meta Data text file image
 Housatonic River | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
2/4/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Little Narragansett Bay and Watch Hill Cove | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
 7/8/2013 

               Condition Survey                      Complete Project Drawing
Meta Data text file image
1/22/2016         After Dredge Survey            Supplemental Project Drawing Meta Data text file image
 Mianus River | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
3/1/2017
After Dredge Survey
Complete Project Drawing
Meta Data text file image
 Milford Harbor | Project Map | Channel Coordinates    
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
5/01/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Mystic River | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
11/20/2020
Condition  Survey
Complete Project Drawing
Meta Data text file image
 New Haven Breakwater
Publication Date: N/A
Project Map:  
 New Haven Harbor | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
8/10/2018

 New Haven Harbor,  Main Ship Channel

Condition Survey
Complete Project Drawing
10/8/2020

New Haven Harbor,  West River

Condition Survey
Complete Project Drawing
11/30/2017

New Haven Harbor, Quinnipiac River

Condition Survey
 Complete Project Drawing
11/30/2017

New Haven Harbor, Mill River 

Condition Survey
Complete Project Drawing

 

 New London Harbor | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
9/14/2021
Condition Survey 
Complete Project Drawing
 
Meta Data text file image
 Niantic Bay and Harbor | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
09/18/2019
Condition  Survey
Complete Project Drawing
Meta Data text file image
 Patchogue River | Project Map |Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
9/4/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Pawcatuck River
Publication Date: 5/30/2012
Project Map:  
DGN File:  
XYZ File:  
PDF Drawings:  
Meta Data File:  
Results of Survey:  
 Southport Harbor | Project Map, | Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
5/11/2022
Condition Survey
Complete Project Drawing
Meta Data text file image
 Stamford Harbor | Project Map

 

Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
3/22/2018
Condition Survey
Complete Project Drawing
Meta Data text file image
 Stonington Harbor | Project Map | Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
9/16/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Stony Creek | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
4/24/2018
Condition Survey
Complete Project Drawing
Meta Data text file image
 Thames River | Project Map
Publication Date Project Title / Description PDF Drawings Survey Results DGN File XYZ File Metadata File
5/2/2017
Condition Survey
Complete Project Drawing
Meta Data text file image
 Westcott Cove | Project Map , |Channel coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
9/30/2020
Condition Survey
Complete Project Drawing
Meta Data text file image
 Westport Harbor and Saugatuck River | Project Map ,| Channel Coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
4/15/2021
Condition Survey
Complete Project Drawing
Meta Data text file image
 Wethersfield Cove | Project Map , |Channel coordinates
Publication Date Project Title / Description PDF Drawings Survey Results XYZ File Metadata File
2/08/2020
Condition Survey
Complete Project Drawing
Meta Data text file image