David M Hernández
Science and Products
Reservoirs provide most of the water supply for Puerto Rico. Most of them were constructed in the early and middle 20th century and sediment accumulation has significantly reduced their original storage capacity. The U.S. Geological Survey (USGS) has been conducting a series of bathymetric surveys using a global positioning system (GPS) and a geographic information system (GIS) technology on...
The purpose of this section is to draw your attention to important information that the CFWSC are conducting in your city.
We provide local and national web-based tools so that policy makers and the public can easily access the information they need to enhance preparedness, response, and resilience.
These pages provide access to water-resources data collected at approximately 1.9 million sites in all 50 states, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands. Online access to this data is organized around the categories listed at the bottom.
The USGS investigates the occurrence, quantity, quality...