EGP Cut status‼️ This morning our science🧑‍🔬team checked the EGP elevation 📉logger. The pond was at 1.88 ft above local mean sea level. The cut ✂️CLOSED 🚫 around 7 PM on Tuesday, March 3rd. The pond was open to the ocean for 8 days almost reaching the ideal 9-11 day cut opening target 🎯. Although not optimal this cut still had a ⭐️positive impact on the pond! ➡️Stay tuned, more EGP post cut data! #greatpondfoundation #edgartowngreatpond #edgartown #marthasvineyard #mv #mvy #islandlife #drone #dronephotography #beach #ocean #water #waves #sand #barrierbeach #atlantic #atlanticocean #cut #closed #pondelevation

✂️EGP CUT CHECK: 3/13/25 This morning our science team offloaded our EGP loggers and checked out the cut ✂️. EGP is still open to the ocean and the pond is currently tidal 🌊however, we have yet to see a rise in salinity 💧🧂in both Lyles Bay (10.81 ppt) and Wintucket Cove (9.02 ppt). The ELEVATION 📉of the pond as of 10 AM this morning was at 1.45 ft local mean sea level (LMSL). Although the cut is currently still open, there is increase shoaling. Let’s hope it stays open longer for more flushing 🚽and tidal exchange! #greatpondfoundation #edgartowngreatpond #marthasvineyard #capeandislands #water #tidal #edgartown #waterquality #loggers #elevation #March #drain #salinity #mv #mvy #news #pondcut #newengland #massachusetts #outdoors #shore #waves #cleanwater

CUT CHECK: at of 10 am Tuesday, March 11th, the pond is still open and flowing. Thanks 🙏 @sully7777777777 for the beautiful images. Edgartown Great Pond is a brackish (salt + fresh) ecosystem that relies on manual breaches of the barrier beach 3-4x per year to allow the exchange of pond and sea 🌊. Cuts reduce the elevation of the Pond to sea level and the pond follows the tidal cycles 🔄 for the duration of the “cut” or breach. Tidal exchanges increase ⬆️ salinity 🧂and water clarity water 💧, reduce ⬇️ nutrients (nitrogen 🚽& phosphorus), and improve 🙌🏻 ecosystem health. #greatpondfoundation #edgartowngreatpond #edgartown #marthasvineyard #mv #mvy #islandlife #drone #dronephotography #beach #ocean #water #waves #sand #barrierbeach #atlantic #atlanticocean

Cut Check: EGP is open and flowing! 🌊 We will check our elevation 📏and salinity 🧂loggers this week to monitor the progress of the cut. Stay tuned for updates and data 📈. 🙏Thanks @sully7777777777 for the #drone shots. 📸Please send your cut pictures and videos!

Edgartown Great Pond was cut this morning, Monday, March 10th, 2025 by the Town of Edgartown. As of ~4:30 pm, the Pond remained high, but had begun to drain. Cuts are considered successful when they Phase I: drain & Phase II: have a tidal 🌊 exchange of at least 9-11 days. Let’s hope for a long cut to maximize salinity 💧 +🧂, as it was critically low for eelgrass (9-11 ppt) pre-cut. Cuts infuse the Pond with clean, clear, salty, low nitrogen seawater and allow the exchange of creatures 🦀 🐟 between pond and ocean. #greatpondfoundation #edgartowngreatpond #marthasvineyard #capeandislands #water #edgartown #waterquality #March #tidal #drain #salinty #mv #mvy #news #newengland #massachusetts #getoutside #outdoors #shore #grass #cleanwater #clean

Yesterday our science team 👩‍🔬 braved the fog 🌫️ and wind 💨 to offload our Chilmark Pond loggers. This includes conductivity loggers 🌡️🧂 in the Upper, Middle, and Lower Ponds as well as the rain ☔️gauge and elevation logger. Chilmark Pond was cut on Sunday, March 2nd and the elevation of the pond as of yesterday was at 2.24 ft NAVD88. #greatpondfoundation #chilmarkpondfoundation #off-season #loggers #data #fog #wind #science #offload #ponds #chilmark #waterquality

🧰 TOOLS OF THE TRADE: DIGITAL RAIN GAUGE @chilmarkpondfoundation joined by Great Pond Foundation installed a digital rain gauge along the eastern shoreline of Chilmark pond in 2023. The digital rain ☔️ gauge records rain accumulation per hour⏳in 1/10th inch intervals. This provides us with precipitation accumulation, rate of accumulation, and a timeline of precipitation events. The rain gauge also collects ambient air temperature 🌡️ data which has been paired with a light💡sensor recording continuous sunlight ☀️ intensity throughout the day. This “high-resolution” data is paired with CPF/GPF’s collected environmental data to better understand the impact of rain 🌧️ and groundwater influx patterns in the ecosystem. ⭐️Thank you to @sheriffsmeadow for hosting this device on their property.⭐️ #rainguage #chilmarkpondfoundation #greatpondfoundation #chilmark #rainaccumulation #data #watersystem #chilmarkpond #science #ecosytem #airtemperatures #sunlight

🧰TOOLS OF THE TRADE: DISSOLVED OXYGEN (DO) LOGGERS 🔵DO is one of the many parameters we measure to determine the overall health ⛑️ of the pond. DO is the amount of oxygen dissolved in the measured in milligrams per liter (mg/L). The amount of oxygen that can physically dissolve in water depends on temperature 🌡️, salinity 🧂, and pressure. Marine life 🐠 depends on DO for basic metabolic activities. The MANAGEMENT GOAL for a healthy pond is 6mg/L. DO levels BELOW 4 mg/L are when organisms begin to suffer from lack 🚫 of oxygen. When DO drops BELOW 2mg/L the water becomes HYPOXIC, where oxygen deficiencies become fatal. 🔵 Our science team👩‍🔬deploys dissolved oxygen (DO) loggers in several ponds during the field-season. Like the conductivity loggers, the DO loggers are secured in a PVC casing attached to a bottom feeder. #dissolvedoxygen #greatpondfoundation #coastalponds #waterquality #data #science #healthyponds #marthasvineyard #capeandislands #livingwaters