Monitoring Water Quality
Protecting Healthy Habitat
Protecting Healthy Habitat
Home 1

Misty Stillness. Photo by Vineyard Colors

A Restoration
Success Story
Home 1 - copy

Ripples in the Pond. Photo by Emily Reddington

Monitoring
Water Quality
Home 1 - copy - copy
Protecting
Healthy Habitat
Otter
Preserving
Pond Ecology

Photo by Anne Mazar

previous arrow
next arrow

Mission Statement

To cultivate the resilience of our coastal pond ecosystems through science, collaboration, and education.

section-c1
section-c2
section-d1
section-d2

About Us

Established in 1998, Great Pond Foundation leads in estuary science and restoration, using data generated by our programs for informed pond management. Our team builds strong partnerships with neighbors; fostering learning and expertise; and sharing tools and techniques. The coastal ponds of Martha’s Vineyard are globally rare, ecologically fragile, treasures whose preservation and restoration are fundamental to the Island’s long-term sustainability. The Island depends on clean and healthy coastal waters to feed families and support the local economy. These living waters define both the spirit and the character of our community.

Learn More

Latest News

Beach Seine Day July 12th

Join us for a beach seine net event @ State ...

GPF Annual Report 2024

Living Waters...Thriving Island By Emily Reddington (an excerpt from 2024 ...

EGP Update

EGP Cut Update Most recent cut stats:

Instagram

We had a great 🤩time hosting @thetrusteesmv high school summer☀️ environmental interns yesterday! They joined our team on Edgartown Great Pond to collect water 💧 samples and conduct a plankton tow. After being in the field 🛶, they processed their samples back in the lab 🥼 . They also used microscopes 🔬to get a close-up look 👀 at their plankton tow samples! 

👏Thanks to these curious and passionate interns for spending the day with us! 

#interns #sampling #summer #greatpondfoundation #mvtrustees #lab #learning #waterquality #boat #microscopes #samples #edgartowngreatpond #marthasvineyard #internship
We had a great 🤩time hosting @thetrusteesmv high school summer☀️ environmental interns yesterday! They joined our team on Edgartown Great Pond to collect water 💧 samples and conduct a plankton tow. After being in the field 🛶, they processed their samples back in the lab 🥼 . They also used microscopes 🔬to get a close-up look 👀 at their plankton tow samples! 

👏Thanks to these curious and passionate interns for spending the day with us! 

#interns #sampling #summer #greatpondfoundation #mvtrustees #lab #learning #waterquality #boat #microscopes #samples #edgartowngreatpond #marthasvineyard #internship
We had a great 🤩time hosting @thetrusteesmv high school summer☀️ environmental interns yesterday! They joined our team on Edgartown Great Pond to collect water 💧 samples and conduct a plankton tow. After being in the field 🛶, they processed their samples back in the lab 🥼 . They also used microscopes 🔬to get a close-up look 👀 at their plankton tow samples! 

👏Thanks to these curious and passionate interns for spending the day with us! 

#interns #sampling #summer #greatpondfoundation #mvtrustees #lab #learning #waterquality #boat #microscopes #samples #edgartowngreatpond #marthasvineyard #internship
We had a great 🤩time hosting @thetrusteesmv high school summer☀️ environmental interns yesterday! They joined our team on Edgartown Great Pond to collect water 💧 samples and conduct a plankton tow. After being in the field 🛶, they processed their samples back in the lab 🥼 . They also used microscopes 🔬to get a close-up look 👀 at their plankton tow samples! 

👏Thanks to these curious and passionate interns for spending the day with us! 

#interns #sampling #summer #greatpondfoundation #mvtrustees #lab #learning #waterquality #boat #microscopes #samples #edgartowngreatpond #marthasvineyard #internship
We had a great 🤩time hosting @thetrusteesmv high school summer☀️ environmental interns yesterday! They joined our team on Edgartown Great Pond to collect water 💧 samples and conduct a plankton tow. After being in the field 🛶, they processed their samples back in the lab 🥼 . They also used microscopes 🔬to get a close-up look 👀 at their plankton tow samples! 👏Thanks to these curious and passionate interns for spending the day with us! #interns #sampling #summer #greatpondfoundation #mvtrustees #lab #learning #waterquality #boat #microscopes #samples #edgartowngreatpond #marthasvineyard #internship
1 day ago
View on Instagram |
1/8
Reminder 🚨: This weekend, SATURDAY, JULY 12th is our annual beach 🏖️ seine science 🧪 day at Sengekontacket Pond! Be a scientist 🧑‍🔬 for the day and join us in investigating the biodiversity 🐟🐡🦀within the pond. All ages are welcome to join. See you there at 10 am! 

*rain ☔️ date: Sunday, July 13th

#seinenet #sengekontacketpond #biodiversity #greatpondfoundation #science #scientist #water #fish #crabs #identify #touch #buckets #summer #july
Reminder 🚨: This weekend, SATURDAY, JULY 12th is our annual beach 🏖️ seine science 🧪 day at Sengekontacket Pond! Be a scientist 🧑‍🔬 for the day and join us in investigating the biodiversity 🐟🐡🦀within the pond. All ages are welcome to join. See you there at 10 am! *rain ☔️ date: Sunday, July 13th #seinenet #sengekontacketpond #biodiversity #greatpondfoundation #science #scientist #water #fish #crabs #identify #touch #buckets #summer #july
4 days ago
View on Instagram |
2/8
Rainbow 🌈 over the Pond this evening. Grateful for this place and this peace. #greatpondfoundation #edgartowngreatpond #edgartown #marthasvineyard #light #evening #july #summer #lookup #grateful #capeandislands #getoutside #sunset #sky #clouds #trees #rainbow
Rainbow 🌈 over the Pond this evening. Grateful for this place and this peace. #greatpondfoundation #edgartowngreatpond #edgartown #marthasvineyard #light #evening #july #summer #lookup #grateful #capeandislands #getoutside #sunset #sky #clouds #trees #rainbow
1 week ago
View on Instagram |
3/8
Summer☀️ Newsletter is out! More on the latest EGP cut, summer event 🌊🐠🦀, and our 2024 Annual Report…
➡️”The job of today’s community is to leave for future generations ponds which are as healthy or healthier than the past…” 
-Curt Geer, GPF’s Chair of Board of Directors 
A quote taken from our 2024 Annual Report, be sure to read more! 📖 
🔗in bio👆

#summernews #egp #cut #annualreport #science #greatpondfoundation #marthasvineyard #newsletter #generations #waterquality
Summer☀️ Newsletter is out! More on the latest EGP cut, summer event 🌊🐠🦀, and our 2024 Annual Report… ➡️”The job of today’s community is to leave for future generations ponds which are as healthy or healthier than the past…” -Curt Geer, GPF’s Chair of Board of Directors A quote taken from our 2024 Annual Report, be sure to read more! 📖 🔗in bio👆 #summernews #egp #cut #annualreport #science #greatpondfoundation #marthasvineyard #newsletter #generations #waterquality
1 week ago
View on Instagram |
4/8
Curious 🧐 how much the salinity in EGP changes after a cut❓These maps 🗾show bottom salinity 🧂 levels before the cut on 6/9/25 and salinity levels 2 week after the cut ✂️on 6/23/25. The pond had an average salinity increase 👆of 7.89 ppt after 2 weeks of mixing! 

#edgartown #edgartowngreatpond #salinty #cut #science #waterquality #greatpondfoundation #mixing #levels #maps #data #summer #marthasvineyard #water #pond
Curious 🧐 how much the salinity in EGP changes after a cut❓These maps 🗾show bottom salinity 🧂 levels before the cut on 6/9/25 and salinity levels 2 week after the cut ✂️on 6/23/25. The pond had an average salinity increase 👆of 7.89 ppt after 2 weeks of mixing! #edgartown #edgartowngreatpond #salinty #cut #science #waterquality #greatpondfoundation #mixing #levels #maps #data #summer #marthasvineyard #water #pond
1 week ago
View on Instagram |
5/8
MV CYANO is in full swing! As you enjoy the pond 💧make sure to keep an eye 👁️ for 🦠green stuff! The BOH have issued a red🔴advisory in the northern most ponds of TGP. This means that in addition to not letting your pets🐕 play in the water, the BOH advise against a fishing 🎣 and/or eating catch from, or wading or swimming 🏊‍♀️ until conditions change for the better. 

Visit our MV CYANO page for a closer look at other maps from this week! 🔗 in bio! 

#greatpondfoundation #marthasvineyard #cyanobacteria #tisbury #summer #green #marthasvineyard
MV CYANO is in full swing! As you enjoy the pond 💧make sure to keep an eye 👁️ for 🦠green stuff! The BOH have issued a red🔴advisory in the northern most ponds of TGP. This means that in addition to not letting your pets🐕 play in the water, the BOH advise against a fishing 🎣 and/or eating catch from, or wading or swimming 🏊‍♀️ until conditions change for the better. Visit our MV CYANO page for a closer look at other maps from this week! 🔗 in bio! #greatpondfoundation #marthasvineyard #cyanobacteria #tisbury #summer #green #marthasvineyard
2 weeks ago
View on Instagram |
6/8
✂️CUT CHECK: The Edgartown Great Pond 💧 cut closed 🚫 on Monday June, 16th. On this closure day the elevation was at 0.90 ft above NAVD88 (1.28 ft above local mean sea level). The pond was open to the ocean 🌊 for 7 days almost reaching the 9-11 day cut opening target 🎯. Although not optimal, this cut still had a positive ⭐️impact on the pond! 

➡️As of 6/18 the pond elevation 📈was at 1.062 ft above NAVD88 (1.442 ft above local mean sea level). 

➡️Stay tuned for more recent elevation data and salinity 🧂levels after the Pond’s had a week to mix! 

Visit our EGP cut status page to stay up to date with data, 🔗 in bio 👆

#greatpondfoundation #edgartowngreatpond #waterquality #cut #closed #cutcheck #marthasvineyard #water #barrierbeach #science #capeandislands #edgartown #closed #summer #beach #ocean #pond #atlanticocean #southshore #sand #islandlife
✂️CUT CHECK: The Edgartown Great Pond 💧 cut closed 🚫 on Monday June, 16th. On this closure day the elevation was at 0.90 ft above NAVD88 (1.28 ft above local mean sea level). The pond was open to the ocean 🌊 for 7 days almost reaching the 9-11 day cut opening target 🎯. Although not optimal, this cut still had a positive ⭐️impact on the pond! ➡️As of 6/18 the pond elevation 📈was at 1.062 ft above NAVD88 (1.442 ft above local mean sea level). ➡️Stay tuned for more recent elevation data and salinity 🧂levels after the Pond’s had a week to mix! Visit our EGP cut status page to stay up to date with data, 🔗 in bio 👆 #greatpondfoundation #edgartowngreatpond #waterquality #cut #closed #cutcheck #marthasvineyard #water #barrierbeach #science #capeandislands #edgartown #closed #summer #beach #ocean #pond #atlanticocean #southshore #sand #islandlife
3 weeks ago
View on Instagram |
7/8
We were grateful ☺️ to be able to discuss water💧 quality and explore coastal pond ecosystems with the 3rd grade students at the Edgartown School. 

On the last day of this 3-day program the students learned about our science 🔬 equipment, what a healthy pond ecosystem looks like, and ways to keep our coastal ponds thriving. To end the day the students built their own pond ecosystems in a jar🫙 ! Thank you 👏to the 3rd grade students for joining us and sharing your knowledge 🧠and enthusiasm 🤩about our ponds! 

#science #youth #3rdgrade #students #edgartown #coastalponds #ponds #greatpondfoundation #waterquality #healthywater #ecosystems #craft #jars #fish #plants #learn #teach #grateful #school #marthasvineyard #science #explore
We were grateful ☺️ to be able to discuss water💧 quality and explore coastal pond ecosystems with the 3rd grade students at the Edgartown School. 

On the last day of this 3-day program the students learned about our science 🔬 equipment, what a healthy pond ecosystem looks like, and ways to keep our coastal ponds thriving. To end the day the students built their own pond ecosystems in a jar🫙 ! Thank you 👏to the 3rd grade students for joining us and sharing your knowledge 🧠and enthusiasm 🤩about our ponds! 

#science #youth #3rdgrade #students #edgartown #coastalponds #ponds #greatpondfoundation #waterquality #healthywater #ecosystems #craft #jars #fish #plants #learn #teach #grateful #school #marthasvineyard #science #explore
We were grateful ☺️ to be able to discuss water💧 quality and explore coastal pond ecosystems with the 3rd grade students at the Edgartown School. 

On the last day of this 3-day program the students learned about our science 🔬 equipment, what a healthy pond ecosystem looks like, and ways to keep our coastal ponds thriving. To end the day the students built their own pond ecosystems in a jar🫙 ! Thank you 👏to the 3rd grade students for joining us and sharing your knowledge 🧠and enthusiasm 🤩about our ponds! 

#science #youth #3rdgrade #students #edgartown #coastalponds #ponds #greatpondfoundation #waterquality #healthywater #ecosystems #craft #jars #fish #plants #learn #teach #grateful #school #marthasvineyard #science #explore
We were grateful ☺️ to be able to discuss water💧 quality and explore coastal pond ecosystems with the 3rd grade students at the Edgartown School. 

On the last day of this 3-day program the students learned about our science 🔬 equipment, what a healthy pond ecosystem looks like, and ways to keep our coastal ponds thriving. To end the day the students built their own pond ecosystems in a jar🫙 ! Thank you 👏to the 3rd grade students for joining us and sharing your knowledge 🧠and enthusiasm 🤩about our ponds! 

#science #youth #3rdgrade #students #edgartown #coastalponds #ponds #greatpondfoundation #waterquality #healthywater #ecosystems #craft #jars #fish #plants #learn #teach #grateful #school #marthasvineyard #science #explore
We were grateful ☺️ to be able to discuss water💧 quality and explore coastal pond ecosystems with the 3rd grade students at the Edgartown School. On the last day of this 3-day program the students learned about our science 🔬 equipment, what a healthy pond ecosystem looks like, and ways to keep our coastal ponds thriving. To end the day the students built their own pond ecosystems in a jar🫙 ! Thank you 👏to the 3rd grade students for joining us and sharing your knowledge 🧠and enthusiasm 🤩about our ponds! #science #youth #3rdgrade #students #edgartown #coastalponds #ponds #greatpondfoundation #waterquality #healthywater #ecosystems #craft #jars #fish #plants #learn #teach #grateful #school #marthasvineyard #science #explore
4 weeks ago
View on Instagram |
8/8
bg-video

Eelgrass in Edgartown Great Pond

play