• On-going Projects

    In addition to numerous research projects underway in San Juan, we have engaged in research collaborations in other cities nationally and internationally through the Urban Resilience to Extremes Sustainability Research Network (UREx SRN), and the USAID CLIMA Project in the Dominican Republic. Click here to learn more about the projects and their lead contacts.
  • Río Piedras River Watershed Alliance

    New! Our collaborations with the Municipality of San Juan have resulted in the creation of a new alliance to study and manage the green spaces, rivers and streams of the Río Piedras River Watershed as an urban social-ecological system. Click the image to visit and join the Río Piedras River Watershed Alliance and be part of this great initiative!

The San Juan Urban Long-Term Research Area (ULTRA) is a long-term network and research site established in the city of San Juan in 2009 by the USDA Forest Service and the National Science Foundation (NSF) to produce knowledge on urban areas and to support policy, education, and local initiatives in order to improve the quality-of-life and environmental conditions in the city. San Juan ULTRA is a collaborative research network composed of multiple academic institutions, public agencies, non-profit partners, and community leaders, which seeks to conduct and support research about the city of San Juan as a social-ecological system (SES). A SES lens looks at the complex human-nature interactions, taking into consideration multiple spatial and temporal scales, and how these systems can adapt and be sustainable in the face of future changes, such as climate change.

Most of our research projects focus on the Río Piedras River Watershed (RPRW), given that this watershed is almost entirely contained within San Juan city boundaries. We established ten sampling points within the RPRW where we conduct social-ecological studies. This boundary is flexible, however, and meant to be adapted to meet scientific and social priorities. Thus, we also have three sampling points and other projects taking place outside of the boundary to address broader areas and issues of significance to the city of San Juan.

Organizationally, San Juan ULTRA is not a specific locality. The principal leadership resides in the San Juan Urban Field Station of the USDA Forest Service International Institute of Tropical Forestry and the University of Puerto Rico (Río Piedras and Medical Sciences Campuses), but multiple academic institutions and public partners make up the San Juan ULTRA network.

Río Piedras River Watershed Alliance

Río Piedras River Watershed Alliance

On-going Projects

On-going Projects

Bridges, Rivers and Streams: bio-cultural interactions with the Piedras River Watershed

Bridges, Rivers and Streams: bio-cultural interactions with the Piedras River Watershed

Fotos Feria Ambiental del río Piedras 2013

Fotos Feria Ambiental del río Piedras 2013

Mapa Participativo Simposio 2013

Mapa Participativo Simposio 2013

Registro de Lugares Taller

Registro de Lugares Taller

Simposio de la Ciencia

Simposio de la Ciencia

2da Feria Ambiental del río Piedras

2da Feria Ambiental del río Piedras

Data Catalog

Solicitud de Información

Formulario para la solicitud de datos e información relevantes a las investigaciones de San Juan ULTRA.

Registro Mi Cuenca

‘Registro mi Cuenca’: Conociendo y Celebrando al Río Piedras es una idea que surge de la necesidad de exponer públicamente las iniciativas científicas…

Catálogo de Datos

San Juan ULTRA pone a disposición de los usuarios, los niveles de información que hemos logrado recopilar en diversas etapas durante el desarrollo de nuestros proyectos…

Aljibe Las Curias

Punto rotulado para “Registro mi Cuenca”. Ubicada en el barrio de Cupey Alto, es una represa de agua construida en el 1952, la cual se nutre de agua de lluvia y cuenta con una trompeta para evitar que suba el nivel del agua.

Puente Histórico #3

Punto rotulado para “Registro mi Cuenca”. Es un antiguo puente español de arco de medio punto en ladrillo, ubicado en los Barrios Cinco y Hato Rey de Río Piedras, que se terminó de construir en el 1853.

Quebrada Doña Ana

Punto rotulado para “Registro mi Cuenca”. Es una quebrada tributaria del río Piedras. Nace en la Estación Las Lomas y desemboca en el río Piedras en el Parque Luis Muñoz Marín.

Quebrada Ausubo

Punto rotulado para “Registro mi Cuenca”. Es una quebrada tributaria del río Piedras. Sirve como la fuente principal de agua para la fauna que habita en el sur del Jardín Botánico y en el Bosque del Nuevo Milenio.

Cam. Los Romeros

Punto rotulado para “Registro mi Cuenca”. Es un sector del Barrio Caimito, donde nace el río Piedras. Caimito se caracteriza por áreas de valor ecológico, que se encuentran amenazadas por el desarrollo urbano.