Official websites use .mass.gov

A .mass.gov website belongs to an official government organization in Massachusetts.
Secure websites use HTTPS certificate

A lock icon or https:// means you’ve safely connected to the official website. Share sensitive information only on official, secure websites.

Skip to main content

Contrast Settings
We are testing UserWay, a tool that will let you change color contrast and other visual styles. Click the button below to open the settings.
If you'd like to share your feedback on this specific feature and help us make the site more accessible, please fill out this short survey.
State Organizations
Log In to...
Top-requested sites to log in to services provided by the state

Virtual Gateway

Unemployment Online

Child Support Services

MassDEP
Waterways
Chapter 91 Research and Resources

This page, Chapter 91 Research and Resources, is offered by
Massachusetts Department of Environmental Protection

Chapter 91 Research and Resources

Links to helpful resources for waterways permitting.

These websites will help you research deeds, maps, tides, and other information critical to waterways projects.

Skip table of contents

Table of Contents

You skipped the table of contents section.

Help Us Improve Mass.gov with your feedback

Did you find what you were looking for on this webpage?

Yes

No

If you have any suggestions for the website, please let us know. How can we improve the page?

Please do not include personal or contact information.

The feedback will only be used for improving the website. If you need assistance, please visit the MassDEP Contacts & Service Center page. Please limit your input to 500 characters.

Please remove any contact information or personal data from your feedback. You will NOT get a response.

If you need assistance, please visit the MassDEP Contacts & Service Center page.

Please let us know how we can improve this page.

Please remove any contact information or personal data from your feedback. You will NOT get a response.

If you need assistance, please visit the MassDEP Contacts & Service Center page.