Monitoring Water Quality
Protecting Healthy Habitat
Protecting Healthy Habitat
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Misty Stillness. Photo by Vineyard Colors

A Restoration
Success Story
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Ripples in the Pond. Photo by Emily Reddington

Monitoring
Water Quality
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Protecting
Healthy Habitat
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Preserving
Pond Ecology

Photo by Anne Mazar

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Mission Statement

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

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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.

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Latest News

Be a Scientist for the Day!

Be a Scientist for the Day! Please join the Great ...

MV CYANO Announcements

MV CYANO Announcements We are excited to announce the completion ...

EGP Update

EGP Update Photo courtesy of Cornelius Sullivan Photo courtesy of ...

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Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! 

#greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! 

#greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! 

#greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! 

#greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! 

#greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
Today we met up with the 3rd graders from the Edgartown School for a seine net event at Sengekontacket Pond💧. This was the intro to our 3-day youth outreach program titled “Is Our Water Healthy”. The students learned about water quality and biodiversity 🐟🦀🐚 within Sengekontacket Pond. The students did a great job identifying 🔍species and collecting biodiversity data📈 ! Tomorrow we will join them in the classroom to analyze 📊 the data they collected and discuss more about what makes a healthy pond ecosystem! #greatpondfoundation #grateful #marthasvineyard #oakbluffs #net #fish #crabs #biodiversity #seinenet #beach #beachseine #community #summer #june #class #students
1 day ago
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1/8
This week our science team had their first nutrient day of the field 🛶 season! We collect nutrient samples 💧once a month 🗓️ and send them to @mblwoodshole for filtering and processing 🧫 to find out the nitrogen and phosphorus concentrations in the ponds. ➡️Nitrogen and phosphorus are essential to life, but with too much🚫of these nutrients in the ecosystem, algal 🦠 blooms can form. This round of nutrient sampling included Edgartown Great Pond, Watcha Pond, and Chilmark Pond! Bottom feeders were also prepped and deployed in the ponds with conductivity and DO sensors! 😁Happy field season!

#nutrients #greatpondfoundation #sampling #waterquality #nitrogen #phosphorus #team #outside #fieldseason #sampling #edgartowngreatpond #chilmarkpond #watchapond #marthasvineyard #capeandislands #boat #pond #shore #bottomfeeders #sensors
This week our science team had their first nutrient day of the field 🛶 season! We collect nutrient samples 💧once a month 🗓️ and send them to @mblwoodshole for filtering and processing 🧫 to find out the nitrogen and phosphorus concentrations in the ponds. ➡️Nitrogen and phosphorus are essential to life, but with too much🚫of these nutrients in the ecosystem, algal 🦠 blooms can form. This round of nutrient sampling included Edgartown Great Pond, Watcha Pond, and Chilmark Pond! Bottom feeders were also prepped and deployed in the ponds with conductivity and DO sensors! 😁Happy field season!

#nutrients #greatpondfoundation #sampling #waterquality #nitrogen #phosphorus #team #outside #fieldseason #sampling #edgartowngreatpond #chilmarkpond #watchapond #marthasvineyard #capeandislands #boat #pond #shore #bottomfeeders #sensors
This week our science team had their first nutrient day of the field 🛶 season! We collect nutrient samples 💧once a month 🗓️ and send them to @mblwoodshole for filtering and processing 🧫 to find out the nitrogen and phosphorus concentrations in the ponds. ➡️Nitrogen and phosphorus are essential to life, but with too much🚫of these nutrients in the ecosystem, algal 🦠 blooms can form. This round of nutrient sampling included Edgartown Great Pond, Watcha Pond, and Chilmark Pond! Bottom feeders were also prepped and deployed in the ponds with conductivity and DO sensors! 😁Happy field season!

#nutrients #greatpondfoundation #sampling #waterquality #nitrogen #phosphorus #team #outside #fieldseason #sampling #edgartowngreatpond #chilmarkpond #watchapond #marthasvineyard #capeandislands #boat #pond #shore #bottomfeeders #sensors
This week our science team had their first nutrient day of the field 🛶 season! We collect nutrient samples 💧once a month 🗓️ and send them to @mblwoodshole for filtering and processing 🧫 to find out the nitrogen and phosphorus concentrations in the ponds. ➡️Nitrogen and phosphorus are essential to life, but with too much🚫of these nutrients in the ecosystem, algal 🦠 blooms can form. This round of nutrient sampling included Edgartown Great Pond, Watcha Pond, and Chilmark Pond! Bottom feeders were also prepped and deployed in the ponds with conductivity and DO sensors! 😁Happy field season! #nutrients #greatpondfoundation #sampling #waterquality #nitrogen #phosphorus #team #outside #fieldseason #sampling #edgartowngreatpond #chilmarkpond #watchapond #marthasvineyard #capeandislands #boat #pond #shore #bottomfeeders #sensors
4 days ago
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2/8
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆

#cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
With summer☀️approaching it’s important to be on the lookout 👀 for potential Cyanobacteria. Cyanobacteria 🦠comes in many forms and can look like a 1️⃣surface scum, 2️⃣surface mat, or 3️⃣benthic (bottom) bloom. In general, it’s important to avoid the green 🟢stuff and keep pets 🐕away! If you see a bloom be sure to report to your local Board of Health Agent. For more information visit our MV CYANO webpage, link in bio 🔗👆 #cyanobacteria #green #scum #surface #benthic #mat #summer #may #ponds #science #mvcyano #greatpondfoundation #swimming #outside
1 week ago
View on Instagram |
3/8
Be a Scientist 👩‍🔬 for the Day! 

Join our team for an open house🏡 and tour of our new laboratory in Vineyard Haven. Come discover the life within the Island waters💧 and be a scientist 🥼for the day! We will look at samples under the microscope 🔬, analyze the biology 🧬 and chemistry of pond waters from across the Island, and learn about the tools and techniques used to study local waters. GET YOUR POND QUESTIONS ANSWERED! There will be activities 🎨 for all ages and families are encouraged to attend. 

➡️Drop by on FRIDAY, MAY 23rd between 3:30 - 5:00 pm. 

➡️Our office is located on the 2nd floor of 21 Mechanic Street, Vineyard Haven, MA. 

See you then! 

#openhouse #greatpondfoundation #science #tour #lab #newoffice #equipment #samples #water #ponds #data #activities #GPF #friday #spring #joinus
Be a Scientist 👩‍🔬 for the Day! Join our team for an open house🏡 and tour of our new laboratory in Vineyard Haven. Come discover the life within the Island waters💧 and be a scientist 🥼for the day! We will look at samples under the microscope 🔬, analyze the biology 🧬 and chemistry of pond waters from across the Island, and learn about the tools and techniques used to study local waters. GET YOUR POND QUESTIONS ANSWERED! There will be activities 🎨 for all ages and families are encouraged to attend. ➡️Drop by on FRIDAY, MAY 23rd between 3:30 - 5:00 pm. ➡️Our office is located on the 2nd floor of 21 Mechanic Street, Vineyard Haven, MA. See you then! #openhouse #greatpondfoundation #science #tour #lab #newoffice #equipment #samples #water #ponds #data #activities #GPF #friday #spring #joinus
2 weeks ago
View on Instagram |
4/8
We hope everyone is enjoying the warmer ☀️weather and we wish you a wonderful start to the season! Our first MV CYANO map 🗾is posted! Check it out on our MV CYANO page 🔗link in bio. This page is where you can stay updated on your favorite ponds. The season is starting good for #edgartowngreatpond with #cyanobacteria levels in the green status✅! 
Jacob’s Pond had cyanobacteria 🦠 levels in the orange 🟠bloom watch status. During a WATCH status the BOH advises against having dogs 🐕, other pets, and livestock come in contact with the water 💧. Keep an eye 👁️ out for surface and benthic scum and use caution when swimming, paddling, or wading in the water in bloom watch areas. 
#mvcyano #greatpondfoundation #green #map #spring #fieldseason #sign #cyanobacteria #benthic #algal #warm #outside #edgartowngreatpond #jacobspond
We hope everyone is enjoying the warmer ☀️weather and we wish you a wonderful start to the season! Our first MV CYANO map 🗾is posted! Check it out on our MV CYANO page 🔗link in bio. This page is where you can stay updated on your favorite ponds. The season is starting good for #edgartowngreatpond with #cyanobacteria levels in the green status✅! 
Jacob’s Pond had cyanobacteria 🦠 levels in the orange 🟠bloom watch status. During a WATCH status the BOH advises against having dogs 🐕, other pets, and livestock come in contact with the water 💧. Keep an eye 👁️ out for surface and benthic scum and use caution when swimming, paddling, or wading in the water in bloom watch areas. 
#mvcyano #greatpondfoundation #green #map #spring #fieldseason #sign #cyanobacteria #benthic #algal #warm #outside #edgartowngreatpond #jacobspond
We hope everyone is enjoying the warmer ☀️weather and we wish you a wonderful start to the season! Our first MV CYANO map 🗾is posted! Check it out on our MV CYANO page 🔗link in bio. This page is where you can stay updated on your favorite ponds. The season is starting good for #edgartowngreatpond with #cyanobacteria levels in the green status✅! Jacob’s Pond had cyanobacteria 🦠 levels in the orange 🟠bloom watch status. During a WATCH status the BOH advises against having dogs 🐕, other pets, and livestock come in contact with the water 💧. Keep an eye 👁️ out for surface and benthic scum and use caution when swimming, paddling, or wading in the water in bloom watch areas. #mvcyano #greatpondfoundation #green #map #spring #fieldseason #sign #cyanobacteria #benthic #algal #warm #outside #edgartowngreatpond #jacobspond
3 weeks ago
View on Instagram |
5/8
This week our science 🧪 team had their first sample run on Edgartown Great Pond marking the official start of the field season🛶! We collected water 💧 quality data and water samples from 12 stations across the pond. We also deployed our “bottom feeders” which house our dissolved oxygen and conductivity loggers at 2️⃣stations of the pond. #greatpondfoundation #marthasvineyard #fieldwork #spring #science #waterquality #samples #may #getoutside #fieldseason
This week our science 🧪 team had their first sample run on Edgartown Great Pond marking the official start of the field season🛶! We collected water 💧 quality data and water samples from 12 stations across the pond. We also deployed our “bottom feeders” which house our dissolved oxygen and conductivity loggers at 2️⃣stations of the pond. #greatpondfoundation #marthasvineyard #fieldwork #spring #science #waterquality #samples #may #getoutside #fieldseason
This week our science 🧪 team had their first sample run on Edgartown Great Pond marking the official start of the field season🛶! We collected water 💧 quality data and water samples from 12 stations across the pond. We also deployed our “bottom feeders” which house our dissolved oxygen and conductivity loggers at 2️⃣stations of the pond. #greatpondfoundation #marthasvineyard #fieldwork #spring #science #waterquality #samples #may #getoutside #fieldseason
3 weeks ago
View on Instagram |
6/8
Welcome Ben Chester! Ben joins our team 👨‍🔬as the Resilient Ecosystem Mentee. Our gratitude 🙏 to the @marthasvineyardcf for supporting this early career position. On Ben’s 2️⃣nd day we are collecting groundwater 💧samples to test for NITROGEN entering ponds. #greatpondfoundation #marthasvineyard #fieldwork #spring #science #groundwater #nitrogen #may #getoutside #grateful #gratitude
Welcome Ben Chester! Ben joins our team 👨‍🔬as the Resilient Ecosystem Mentee. Our gratitude 🙏 to the @marthasvineyardcf for supporting this early career position. On Ben’s 2️⃣nd day we are collecting groundwater 💧samples to test for NITROGEN entering ponds. #greatpondfoundation #marthasvineyard #fieldwork #spring #science #groundwater #nitrogen #may #getoutside #grateful #gratitude
3 weeks ago
View on Instagram |
7/8
With summer ☀️ nearly here, the MV CYANO 🦠program will be back in full swing!

➡️ Make sure to check ✔️out our new and improved MV CYANO page. We hope you find this updated page more user friendly for checking the status of the ponds💧! Thank you Al Reed, for your help and hard work 👏! And a special thanks to Fernando Lana for assisting with the Portuguese translations! 
Check out the updated MV CYANO site, link in bio 👆

➡️ Want to learn about the 2024 MV CYANO data? Check out our annual MV CYANO presentation recording from yesterday! This is available on YouTube and our MV CYANO page, link in bio 👆

#thankyou #announcment #mvcyano #greatpondfoundation #summer #water #ponds #data #science #website #coastalponds #stats #capeandislands #marthasvineyard
With summer ☀️ nearly here, the MV CYANO 🦠program will be back in full swing! ➡️ Make sure to check ✔️out our new and improved MV CYANO page. We hope you find this updated page more user friendly for checking the status of the ponds💧! Thank you Al Reed, for your help and hard work 👏! And a special thanks to Fernando Lana for assisting with the Portuguese translations! Check out the updated MV CYANO site, link in bio 👆 ➡️ Want to learn about the 2024 MV CYANO data? Check out our annual MV CYANO presentation recording from yesterday! This is available on YouTube and our MV CYANO page, link in bio 👆 #thankyou #announcment #mvcyano #greatpondfoundation #summer #water #ponds #data #science #website #coastalponds #stats #capeandislands #marthasvineyard
1 month ago
View on Instagram |
8/8
bg-video

Eelgrass in Edgartown Great Pond

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