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Estuario Weekly Update

An estuarine greeting! Below, you’ll find opportunities for collaboration, volunteering, and training through initiatives and actions scheduled to benefit the ecosystems and communities of the San Juan Bay.

Water Quality Day of Puerto Rico Returns

The largest participatory science event on the island is back! The sixteenth Water Quality Day of Puerto Ricowill be on Saturday, April 15, 2024, from 9:00 a.m. to 11:00 a.m.

Water Quality Day participants will collect simple water quality parameters across the island. The information collected will be part of a global database and will provide a snapshot of the state of the island’s waters.

Let your family and friends know, choose a body of water that is important to you, and enroll your group in:


Family Day at the Condado Lagoon

Thank you to those who joined us on the Family Day at the Condado Lagoon Natural Estuarine Reserve!

Starting the morning of Saturday, March 2nd, 36 volunteers conducted a cleanup at the Reserve, removing 253 pounds of solid waste. We thank all the participants, the community group Los Tsunamis, and the administrator of the Jaime Benítez Park, José Ramos, for their support.

Later, about 12 people participated in an outdoor yoga session, with instructor Victoria Bermudez. Thank you, Victoria!

After the yoga session, Coral Avilés and Eliezer Nieves, from our education team, led a group of 43 people on an interpretive tour of the Reserve. During the tour, the group chatted about the ecosystem, its biodiversity and the importance of ensuring the good quality of its waters.

After the tour, coordinators Daritzel Cintrón and Mario García provided an open-air workshop on the biodiversity of the Reserve.

The workshop encompassed birds, amphibians, invertebrates, mammals, marine life, and its most common plants. After the workshop, they led a trivia game.

The Family Day at the Condado Lagoon Natural Estuarine Reserve concluded with the screening of Cine del Estuario, featuring Barbie. 102 people attended the feature.

Once again, we thank the volunteers, collaborators, administrators, and visitors who joined us. See you next time!

Employment and contract opportunities

Internship Opportunity—Stakeholder Education & Awareness – The San Juan Bay Estuary Partnership (Estuario) seeks university-level interns to raise awareness within municipalities and educate about the importance of correct management of solid/liquid waste,  including the impact of incorrect disposal of used oil and other materials on gray infrastructure and the environment.

Request for Proposal—Capacity Building and Facilitation Services – The Capacity Building Services supports Estuario’s role as a regional convener, catalyst, and facilitator to restore and maintain clean waters that support a thriving ecosystem, healthy communities, and vibrant ecosystem in the San Juan Bay Estuary and its urbanized watershed. 

Request for Proposals—Recruiting Services – The San Juan Bay Estuary Partnership, or Estuario, requests proposals from qualified individual or firms to provide recruiting services for various open positions (contractor and staff).  The selected firm will be responsible for sourcing, screening, and presenting qualified candidates to fill positions in accordance with the Estuario’s internal policies and procedures and other grant requirements.

See more at:

Certification for citizen scientists

Below are the upcoming events. We add more activities regularly. See more at

Participatory Bird Census Module:

March 10 – Field Trip: Participatory Bird Census; with Coral Avilés and Eliezer Nieves, from 7:00 a.m. to 10:00 a.m. in Parque Central de San Juan

Water Quality Module:

March 14 – Introduction to Water Quality Monitoring Workshop; with Coral Avilés, from 7:00 p.m. to 8:00 p.m. via Zoom

Microplastics Characterization and Reduction Module:

March 21 – Introduction to microplastics and other aquatic debris workshop; with Coral Avilés, from 7:00 p.m. to 8:00 p.m. via Zoom

Coastal Resilience Module:

March 19 – Field Trip: Ecological Assessment of Coral Reefs; with Coastal Resilience Coordinator, Daritzel Cintrón, from 7:00 a.m. to 10:00 a.m. at Balneario El Escambrón

March 23 – Field trip: planting coastal vegetation with arborist Andreína Alexatos, from 8:30 a.m. to 11:30 a.m. at Corredor Ecológico del Noreste, Luquillo

March 28 – Introduction to Coastal Resilience Workshop; with Coral Avilés, from 7:00 p.m. to 8:00 p.m. via Zoom

March 31 – Field Trip: Ecological Assessment of Coral Reefs and Seagrasses; with Daritzel Cintron, from 8:00 a.m. to 11:00 a.m. at Laguna del Condado

Other activities

Planting of coastal vegetation in Luquillo:

On Saturday, February 24th, 22 volunteers, together with collaborators EcoCulture, planted over 900 roosterwood trees (Pterocarpus officinalis) in Corredor Ecológico del Noreste, as part of the coastal resilience module of Estuario’s certification for citizen scientists. We thank all the volunteers who joined us, EcoCulture, Reforesta and the Coalición Pro-Corredor Ecológico del Noreste.

Seed collection in Loíza:

On Tuesday, February 27th, ten volunteers joined coastal resilience coordinator, Andreína Alexatos, to collect seeds on Península del Pescador in Piñones. The group collected around 648 red mangrove propagules, which will be used in future coastal plantings. Thank you!

Media coverage

March 1, 2024. Estuario de la Bahía de San Juan exhorta a los contribuyentes a donar a través de su reintegro. Ciencia y Ambiente. El Nuevo Día. Web.

Brenda Torres Barreto. March 6, 2024. Acción para proteger nuestras costas. Opinión. El Nuevo Día. p.44. 

Support us with your tax refund

By making your individual contribution in 2024, support the Estuary with the refund of your tax return. Look for the option “Contribution to the Special Fund for the San Juan Bay Estuary“, on line 1B of the “Refund” box. Read more, here.

Weekly water quality monitoring

Assessment conducted on Thursday, March 7, 2024. We have a GREEN flag for the Condado Lagoon. However, we recommend avoiding areas that exceeded the Beach Action Value water quality parameter for enterococci of 70 CFU/100 ML. Have a nice weekend!

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