The DRAFT Massachusetts Guide to Lake Management
The Massachusetts Guide to Lake Management (MassGLM) is intended to provide an update to the 2004 Generic Environmental Impact Report on Eutrophication and Aquatic Plant Management in Massachusetts (GEIR) and the accompanying Practical Guide to Lake Management in Massachusetts. The original GEIR was developed in the late 1990s and early 2000s. Over the last two decades, much experience has been gained with the management of lakes and ponds. Additionally, changes in regulations have created additional needs not addressed in 2004 and this document incorporates this information. This 2025 guide incorporates updates to both the GEIR and Practical Guide into one hybrid document.
The draft MassGLM was recently posted for public review and comment for 30 days. There were over 100 comments, questions, edits and suggestions received for the draft; all of these are currently under review by the interagency team that has worked on the MassGLM. Replies to comments, questions, edits and suggestions will be posted once they are available. If you have any questions, please contact the DCR Lakes & Ponds Program.
Eutrophication and Aquatic Plant Management In Massachusetts General Environmental Impact Report
This report presents a brief summary of the science of limnology (the study of freshwater ecosystems), describes procedures for lake management, and reviews case studies of lake management in Massachusetts.
Guides
Massachusetts has over 3000 lakes and ponds that provide opportunities for recreation and valuable habitat for a wide diversity of plants and animals. However, over the years, many citizens of Massachusetts have observed a decline in the health of their lakes and ponds. This guide is a starting point for concerned citizens who wish to learn about lake ecology and ways they can protect the future of their lake or pond.
The first section will help you understand the basic concepts of watersheds and the ecology of lakes and ponds. It covers the importance of a watershed approach to lake and pond protection and the ecology and cycles within a lake system. The next two sections address the main causes of reduced water quality and outline ways that you, as a concerned citizen, can adopt a proactive role in preventing further degradation to our water bodies.
There is also information for people who wish to go one step further and begin or join a lake association, apply for grants or obtain additional education publications. Act now and protect your lake’s future!- DCR Guide to Aquatic Plants in Massachusetts
- DCR Guide to Aquatic Invasive Species
- DCR Bacteria Control Guide for Swimming Operations
Brochures and Posters
Rapid Response Plans
Curleyleaf Pondweed Rapid Response Plan for Massachusetts
Eurasion Watermilfoil Rapid Response Plan for Massachusetts
Fanwort Rapid Response Plan for Massachusetts
Hydrilla Rapid Response Plan for Massachusetts
Phragmites Rapid Response Plan for Massachusetts
Snakehead Rapid Response Plan for Massachusetts