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We conduct impartial, multi- and interdisciplinary research and monitoring on a large range of natural-resource issues that impact the quality of life of citizens and landscapes of the Southeastern United States and the Caribbean region.
U.S. Seismic Hazard Maps–Hawaii, Puerto Rico and the U.S. Virgin Islands, and Samoa and the Pacific Islands
Seismic hazard maps for Hawaii, Puerto Rico and the U.S. Virgin Islands, and Samoa and the Pacific Islands.
Circulation and Sediment, Nutrient, Contaminant, and Larval Dynamics on Reefs
This study is part of the USGS Coral Reef Project.
Sea-Level Rise and Climate Change Impacts to Reefs
This study is part of the USGS Coral Reef Project.
Coral Reef Project: Puerto Rico
To better understand how waves move across coral reefs and cause flooding on tropical shorelines, USGS scientists have installed video cameras and oceanographic instruments off San Juan and Rincón, Puerto Rico. Their work is part of a study funded by USGS after Hurricanes Irma and Maria. The offshore instruments measure wave heights and speeds; the onshore video cameras show where waves break...
Using Video Imagery to Study Wave Dynamics: Tres Palmas
Four video cameras look westward over the coast and the coral reef at Tres Palmas in Rincón, on the west coast of Puerto Rico. Two cameras look out at the horizon and over the ocean for the mid-field view; one camera offers a zoomed-in, far-field view overlooking the reef and out to the island of Desecheo, a U.S. National Wildlife Refuge; and another camera focuses on the beach.
Using Video Imagery to Study Wave Dynamics: Isla Verde
USGS scientists installed video cameras atop a building and oceanographic instruments off San Juan, Puerto Rico, to better understand how waves move across coral reefs and cause flooding on tropical shorelines.
Coral Reef Project
Explore the fascinating undersea world of coral reefs. Learn how we map, monitor, and model coral reefs so we can better understand, protect, and preserve our Nation's reefs.
Information by Region-Puerto Rico and the Virgin Islands
United States Assessments of Undiscovered Oil and Gas Resources
USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World (click here for information about World Oil and Gas Assessments). This website provides access to new, prioritized, assessment results and supporting data for the United States, as part...
Geographic Information Systems (GIS)
Maps are an integral part of water-science activities and the Caribbean Florida Water Science Center utilizes and produces maps for all types of hydrologic projects and in information dissemination. Maps are also helpful for providing the user with a geographical reference to our water information.
Water Quality for Puerto Rico
The U.S. Geological Survey operates and maintains approximately 7,300 streamgages nationwide, 194 in Puerto Rico, which provide long-term, accurate, and unbiased information that meets the needs of many diverse users. The USGS collects the streamflow data needed by Federal, State, and local agencies for planning and operating water-resources projects and regulatory programs.
The links...
Hurricanes
Preventing flood hazards, such as hurricane-induced tidal surge, from becoming human disasters requires an understanding of the relative risks floods pose to specific communities and knowledge of the processes by which flood waters rise, converge, and abate. Historically, hurricane-induced tidal surge has been documented through measurement of high-water marks left on structures or vegetation...

Information about scientific data collected through field activities conducted by scientists in the USGS Coastal and Marine Hazards and Resources program

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

The following graphs show water surface elevations above NGVD 1929 in selected reservoirs for several years, including 2015. The purpose of these graphs is to compare water surface elevations during 2015 with water surface elevations observed during years when documented droughts have occurred.

The following graphs show water surface elevations above NGVD 1929 in selected reservoirs for several years, including 2015. The purpose of these graphs is to compare water surface elevations during 2015 with water surface elevations observed during years when documented droughts have occurred.

This data release provides flooding extent polygons (flood masks) and depth values (flood points) based on wave-driven total water levels for 22 locations within the States of Hawaii and Florida, the Territories of Guam, American Samoa, Puerto Rico, and the U.S. Virgin Islands, and the Commonwealth of the Northern Mariana Islands. For each of the 22 locations there are eight associated flood mask

This part of the data release presents projected flooding extent polygon (flood masks) and flooding depth points (flood points) shapefiles based on wave-driven total water levels for the Territory of Puerto Rico (the islands of Culebra, Puerto Rico, and Vieques). For each island there are 8 associated flood mask and flood depth shapefiles: one for each four nearshore wave energy return periods (r

This part of the data release presents projected flooding extent polygon (flood masks) and flooding depth points (flood points) shapefiles based on wave-driven total water levels for the State of Hawaii (the islands of Hawaii, Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau, and Oahu). For each island there are 8 associated flood mask and flood depth shapefiles: one for each of four nearshore wave

Time-series data of water surface elevation, waves, currents, temperature, and salinity collected between 17 May 2017 and 17 Jan 2018 off the southwest coast of Puerto Rico in support of a study on circulation and sediment transport dynamics over coral reefs. The data are available in NetCDF format, grouped together in zip files by instrument site location. A README.txt file details the files con

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations.

Boundaries data or governmental units represent major civil areas including states, counties, Federal, and Native American lands, and incorporated places such as cities and towns.

The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map.
This map shows the provinces assessed by the USGS for undiscovered oil and gas resources.
The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.
Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction
The degradation of coastal habitats, particularly coral reefs, raises risks by increasing the exposure of coastal communities to flooding hazards. The protective services of these natural defenses are not assessed in the same rigorous economic terms as artificial defenses, such as seawalls, and therefore often are not considered in decision making...
Storlazzi, Curt D.; Reguero, Borja G.; Cole, Aaron D.; Lowe, Erik; Shope, James B.; Gibbs, Ann E.; Nickel, Barry A.; McCall, Robert T.; van Dongeren, Ap R.; Beck, Michael W.Seismic sensors record a hurricane’s roar
The instruments installed at Global Seismographic Network (GSN) stations were designed to record Earth’s vibrations, but they sometimes pick up sound waves from unexpected sources. For example, newly installed infrasound sensors at a station on Puerto Rico recorded the passage of Hurricane Maria on 20 September 2017.
Wilson, David C.; Davis, Peter; Ebeling, Carl; Hutt, Charles R.; Hafner, KatrinThe 3D Elevation Program: summary for Puerto Rico
Elevation data are essential to a broad range of applications, including forest resources management, wildlife and habitat management, scientific research, national security, recreation, and many others. For the Commonwealth of Puerto Rico, elevation data are critical for flood risk management, landslide mitigation, natural resources conservation...
Carswell, William J.Hydrologic conditions in the South Coast aquifer, Puerto Rico, 2010–15
In 1958, the U.S. Geological Survey began documenting hydrologic conditions, including groundwater levels, groundwater withdrawals for agricultural irrigation and public water supply, and water quality, in the South Coast aquifer, Puerto Rico. This information has improved the understanding of the water resources of the region. The hydrologic data...
Torres-Gonzalez, Sigfredo; Rodriguez, Jose M.Source, use and disposition of freshwater in Puerto Rico, 2010
Introduction Water diverted from streams and pumped from wells constitutes the main source of water for the 78 municipios of the Commonwealth of Puerto Rico. A better understanding of water-use patterns is needed, particularly regarding the amount of water used, where and how this water is used and disposed, and how human activities affect water...
Molina, Wanda L.Estimated water use in Puerto Rico, 2010
Water-use data were aggregated for the 78 municipios of the Commonwealth of Puerto Rico for 2010. Five major offstream categories were considered: public-supply water withdrawals and deliveries, domestic and industrial self-supplied water use, crop-irrigation water use, and thermoelectric-power freshwater use. One instream water-use category also...
Molina-Rivera, Wanda L.Vs30 and spectral response from collocated shallow, active- and passive-source Vs data at 27 sites in Puerto Rico
Shear‐wave velocity (VS) and time‐averaged shear‐wave velocity to 30 m depth (VS30) are the key parameters used in seismic site response modeling and earthquake engineering design. Where VS data are limited, available data are often used to develop and refine map‐based proxy models of VS30 for predicting ground‐motion intensities. In this paper,...
Odum, Jack K.; Stephenson, William J.; Williams, Robert A.; von Hillebrandt-Andrade, ChristaSource, Use, and Disposition of Freshwater in Puerto Rico, 2005
Water diverted from streams and pumped from wells constitutes the main sources of water for the 78 municipios of the Commonwealth of Puerto Rico. A better understanding is needed about water-use patterns, particularly about the amount of water used, where and how this water is used and disposed, and how human activities impact water resources....
Molina-Rivera, Wanda L.Estimated Water Use in Puerto Rico, 2005
Water-use data were compiled for the 78 municipios of the Commonwealth of Puerto Rico for 2005. Five offstream categories were considered: public-supply water withdrawals and deliveries, domestic self-supplied water use, industrial self-supplied ground-water withdrawals, crop irrigation water use, and thermoelectric power freshwater use. One water...
Molina-Rivera, Wanda L.; Gómez-Gómez, FernandoEstimated water use in Puerto Rico, 2000
Water-use data were compiled for the 78 municipios of the Commonwealth of Puerto Rico for 2000. Five offstream categories were considered: public-supply water withdrawals, domestic self-supplied water use, industrial self-supplied withdrawals, crop irrigation water use, and thermoelectric power fresh water use. Two additional categories also were...
Molina-Rivera, Wanda L.Geology and hydrogeology of the Caribbean islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands
Poorly lithified to unconsolidated carbonate and clastic sedimentary rocks of Tertiary (Oligocene to Pliocene) and Quaternary (Pleistocene to Holocene) age compose the South Coast aquifer and the North Coast limestone aquifer system of Puerto Rico; poorly lithified to unlithified carbonate rocks of late Tertiary (early Miocene to Pliocene) age...
Renken, Robert A.; Ward, W. C.; Gill, I.P.; Gómez-Gómez, Fernando; Rodríguez-Martínez, JesúsQuality-assurance plan for water-use program activities of the Caribbean District
Molina-Rivera, W. L.The Pedestrian Evacuation Analyst is an ArcGIS extension that estimates how long it would take for someone to travel on foot out of a hazardous area that was threatened by a sudden event such as a tsunami, flash flood, or volcanic lahar. It takes into account the elevation changes and the different types of landcover that a person would encounter along the way.
Stream gaging in Puerto Rico after Tropical Storm Karen: tethered ADCP
Stream gaging in Puerto Rico after Tropical Storm Karen: tethered ADCP – A tethered acoustic Doppler current profiler (ADCP) is pulled through a cross section of Rio de La Plata near Toa Alta, Puerto Rico, September 25, 2019. Hydrologic technicians with the Caribbean-Florida Water Science Center visited multiple USGS stream gage sites to make high flow
...Stream gaging in Puerto Rico after Tropical Storm Karen: computer
Stream gaging in Puerto Rico after Tropical Storm Karen: computer – Gage height and precipitation data recorded by sensors and measured manually are logged into an electronic notebook, September 25.
Stream gaging in PR after Tropical Storm Karen: Crest Stage Gage
Stream gaging in Puerto Rico after Tropical Storm Karen: Crest Stage Gage – The distance of a cork line from a known gage height is measured September 25. The cork line was left on a crest stage gage after a high flow event.
Stream gaging in Puerto Rico after Tropical Storm Karen: Gage house
Stream gaging in Puerto Rico after Tropical Storm Karen: Gage house – Manuel Rosario, with the Caribbean-Florida Water Science Center, checks the sensors in the gage house September 25.
Stream gaging in PR after Tropical Storm Karen: computing gage height
Stream gaging in Puerto Rico after Tropical Storm Karen: computing gage height – Manual Rosario does some math required to compute the gage height September 25.
Stream gaging in PR after Tropical Storm Karen: recording gage height
Stream gaging in Puerto Rico after Tropical Storm Karen: recording gage height – A ding-wop, a weight attached to measuring devices, was used to measure the gage height, September 25.
Stream gaging in PR after Tropical Storm Karen: staging measurement
Stream gaging in Puerto Rico after Tropical Storm Karen: staging the measurement – Manuel Rosario, with the Caribbean-Florida Water Science Center, stages an acoustic Doppler current profiler (ADCP) to measure high flow September 25.
Stream gaging in PR after Tropical Storm Karen: downstream control
Stream gaging in Puerto Rico after Tropical Storm Karen: downstream control – The pool pictured is almost twice it’s normal size and depth after Tropical Storm Karen passed the island, September 25.
Stream gaging in PR after Tropical Storm Karen: finishing the visit
Stream gaging in Puerto Rico after Tropical Storm Karen: finishing the visit – Manuel Rosario, with the Caribbean-Florida Water Science Center, walks to the gage house after completing a discharge measurement September 25.
Jim Smith Inside Lucchetti Dam in Puerto Rico
Jim Smith working on cabling inside of Lucchetti dam in Puerto Rico, assisting the Puerto Rico Strong Motion Program with Hurricane Maria recovery efforts.
Camera 1 Snapshot at Tres Palmas, Puerto Rico
Video camera snapshot at Tres Palmas in Rincón, on the west coast of Puerto Rico.
Tres Palmas, Rincon, Puerto Rico
Photograph collected from a UAS flown over the beach at Tres Palmas in Rincón, Puerto Rico.

The Association for the Sciences of Limnology and Oceanography Annual Meeting

USGS scientists from Pacific Coastal and Marine Science Center, along with with NOAA, the University of Puerto Rico-Mayaguez, and Arrecifes Pro Ciudad, are using video imagery and wave measurements to study flood hazards in San Juan, Puerto Rico.
Hurricane response crews from the U.S. Geological Survey are installing storm-tide sensors at key locations in Puerto Rico from Cabo Rojo to Naguabo in advance of Hurricane Isaac. Under a mission assignment from the Federal Emergency Management Agency, the USGS plans to deploy about 20 sensors along the island’s coast

USGS research geologist Curt Storlazzi was quoted in an August 22 Nature news article about Hurricane Maria’s effects on deep-water coral reefs off Puerto Rico.
No one has a crystal ball to foresee what will happen during the 2018 hurricane season that begins June 1, but NOAA forecasters say there’s a 75 percent chance this hurricane season will be at least as busy as a normal year, or busier.
U.S. Geological Survey field crews in Puerto Rico are rapidly repairing the damage wrought by Hurricanes Irma and Maria, tracking the scope of storm floods, and documenting the new contours of rivers re-sculpted by floodwaters and mountains re-shaped by landslides.
To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.
To learn more about USGS’ role providing science to decision makers before, during and after Hurricane Irma, visit the USGS Hurricane Irma page.
Geologists have discovered evidence that unusual seas detached living corals from a Caribbean reef and scattered them far inland, as boulders, during the last centuries before Columbus arrived. The new findings will reinforce precautions against coastal hazards, Caribbean tsunami specialists said.
“From the mountains to the coast, the southeastern U.S. contains ecosystems that harbor incredible biodiversity. Many of those ecosystems are already highly at risk from urbanization and other human land-use change. Identifying the ecosystems at risk from climate change will help inform conservation and management to ensure we don’t lose that biodiversity.” (Jennifer Constanza, report author)
New USGS models help predict storm effects on beaches
As the 2016 hurricane season opens, weather forecasters, emergency managers and coastal residents have access to tools developed by the U.S. Geological Survey that predict, more precisely than ever, where beach erosion and beachfront flooding will take place during hurricanes and other storms.
First-of-its-kind survey shows that algal toxins are found nationwide