NEW ENGLAND DISTRICT

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File Information

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.

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

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

Metadata file.

New Hampshire Projects

The Corps has completed 10 navigation projects in New Hampshire that have improved rivers, harbors, and lakes used by commercial interests, fishermen, and the many recreational boaters that benefit from New Hampshire's coastal and inland waterways. Initial work on some of the projects dates back to the 19th century. However, most of the navigational work in today's rivers and harbors has been constructed by the Corps within the past 50 years, costing an aggregate $6.65 million. Below are the Corps' navigation projects in New Hampshire.

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Back Channel / Sagamore Creek | Project Map

Publication Date	Project Title / Description	PDF Drawings	Survey Results	DGN File	XYZ File	Metadata File
8/7/2013	Condition Survey Complete Project Drawing

Bellamy River

Publication Date:	4/10/2008
Project Map:
DGN File:
XYZ File:
PDF Drawings:
Meta Data File:
Results of Survey:

Cocheco River

Publication Date:	2/18/2011
Project Map:
DGN File:
XYZ File:
PDF Drawings:
Meta Data File:
Results of Survey:

Exeter River

Publication Date:	8/31/2009
Project Map:
DGN File:
XYZ File:
PDF Drawings:
Meta Data File:
Results of Survey:

Hampton Harbor | Project Map

Publication Date	Project Title / Description	PDF Drawings	Survey Results	DGN File	XYZ File	Metadata File
4/12/2013	After Dredge Survey Complete Project Drawing
12/7/2015	Condition Survey Supplemental Drawing

Isles of Shoals Harbor

Publication Date:	6/1/1967
Project Map:
PDF Drawings:

Lake Winnipesauke

Publication Date:	N/A
Project Map:

Lamprey River

Publication Date:	3/5/2004
Project Map:
DGN File:
XYZ File:
PDF Drawings:
Meta Data File:
Results of Survey:

Little Harbor | Project Map

Publication Date	Project Title / Description	PDF Drawings	Survey Results	DGN File	XYZ File	Metadata File
11/26/2013	Condition Survey Complet Project Drawing

Portsmouth Harbor and Piscataqua River | Project Map

Publication Date	Project Title / Description	PDF Drawings	Survey Results	DGN File	XYZ File	Metadata File
4/9/2007	Condition Survey Complete Project Drawing
3/27/2013	After Dredge / Condition Survey Supplemental Drawing
11/20/2015	Condition Survey Supplemental Drawing
8/7/2013	Back Channel / Sagamore Creek Condition Survey Complete (Sub-Project) Drawing