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open access

2013 National Ocean Dumping Site Monitoring Assessment Report

Description: This national report presents EPA's ocean dumping monitoring activities in fiscal year 2013. EPA conducted 13 surveys at 20 ocean disposal sites offshore from Puerto Rico, Virginia, South Carolina, Florida, Texas, Hawaii, and Oregon. This report summarizes each survey's objectives(s), activities, conclusions, and recommended environmental management actions.
Date: May 2016
Creator: United States. Environmental Protection Agency. Office of Water.
open access

Aeroradioactivity Survey and Geology of Puerto Rico (ARMS-I)

Description: Report containing an aeroradioactivity survey of Puerto Rico made on behalf of the Division of Biology and Medicine, United States Atomic Energy Commission. Topics include the types of bedrock noted in the area as well as their levels of radioactivity.
Date: March 1964
Creator: MacKallor, Jules A.
open access

The Arecibo Ionospheric Observatory

Description: This report discusses how the Arecibo Ionospheric Observatory gathers funding for future endeavors.
Date: January 25, 2012
Creator: Matthews, Christine M.
open access

The Arecibo Ionospheric Observatory

Description: This report discusses the issues involved with determining whether the Arecib Ionospheric Observatory is more cost-effective than replacing it with newer, available technology. The Arecibo Ionospheric Observatory is a radio and radar telescope located in Barrio Esperanza, Arecibo, Puerto Rico. In 2005-2006, NSF's Division of Astronomical Sciences (AST) conducted a Senior Review of its portfolio of facilities and reported that the scientific value of the Arecibo was modest when compared to othe… more
Date: June 16, 2011
Creator: Matthews, Christine M.
open access

The Arecibo Ionospheric Observatory

Description: This report discusses the issues involved with determining whether the Arecib Ionospheric Observatory is more cost-effective than replacing it with newer, available technology. The Arecibo Ionospheric Observatory is a radio and radar telescope located in Barrio Esperanza, Arecibo, Puerto Rico.
Date: March 5, 2009
Creator: Matthews, Christine M.
open access

Comprehensive Energy Planning for Puerto Rico and U.S. Virgin Islands

Description: This report discusses the electric power grid of Puerto Rico and the U.S. Virgin Islands which were mainly destroyed by Hurricanes Irma and Maria with Puerto Rico being the hardest hit power grid. The report mainly concerns previous and current efforts to create long-term comprehensive energy plans for insular areas such as Puerto Rico and some of the challenges encountered in doing so.
Date: November 6, 2017
Creator: Clark, Corrie E.
open access

Floods in Puerto Rico, Magnitude and Frequency

Description: This report used "annual peak-discharge records at fifty sites with five or more years of record" to determine individual site frequency curves. It includes several maps.
Date: June 1979
Creator: López, M. A.; Colón-Dieppa, E. & Cobb, E. D.
open access

Ground Water in the Lajas Valley, Puerto Rico

Description: Abstract: Lajas Valley is plagued with problems of salinity and waterlogging the soils. Use of brackish (500 milligrams per liter) irrigation compounded ground water for the problem until an irrigation-drainage system was constructed in 1955. Lajas is an alluvium-filled limestone highlands. The alluvium, mostly clay and as much 300 feet (90 meters) thick, contains brackish ground water except in the recharge areas located along the foothills...Results from a digital model show that a network o… more
Date: March 1977
Creator: Anderson, Henry R.
open access

Ground Water in the San Juan Metropolitan Area, Puerto Rico

Description: From introduction: A post-drought analysis of the sources of water supply for the metropolitan area indicated a need for better knowledge of the ground-water resources. A study was implemented through the cooperative water-resources investigation program between Commonwealth agencies of Puerto Rico and the U.S. Geological Survey.
Date: July 1976
Creator: Anderson, Henry R.
open access

History of Dredging and Filling of Lagoons in the San Juan Area, Puerto Rico

Description: Abstract: Laguna La Torrecilla, Laguna de Pinones, Laguna San Jose, and Laguna del Condado, in the San Juan, Puerto Rico area, are located within a metropolitan area of more than 1 million people. Bathymetric maps made during the study, in 1973, showed that Lagunas La Torrecilla, San Jose, and del Condado have been modified by dredging and filling; whereas, Laguna de Pinones has remained in a near natural state. Laguna La Torrecilla has been dredged to a depth, in places, of about 18 metres, an… more
Date: September 1976
Creator: Ellis, S. R.
open access

Iron-Ore Resources of the United States: Including Alaska and Puerto Rico, 1955

Description: From introduction: The purpose of this report is to summarize available information concerning iron-ore resources in the United States in order to provide a general background for understanding and appraising the present status of this basic commodity.
Date: 1959
Creator: Carr, Martha S. & Dutton, Carl E.
open access

Limnology of Lago Loiza, Puerto Rico

Description: From purpose and study: The principal objectives of this study were as follows: (1) to determine the existing water-quality conditions in Lago Loiza as reflected by the principal chemical, physical, biological and bacteriological characteristics in the lake and its tributaries. (2) To estimate the reservoir's water budget during the study period, including the contributions from the tributaries and other sources. (3) Estimation of the reservoir's overall nitrogen and phosphorus budget, includin… more
Date: February 1980
Creator: Quiñones-Márquez, Ferdinand
open access

Limnology of Laguna Tortuguero, Puerto Rico

Description: Abstract: The principal chemical, physical and biological characteristics, as well as the hydrology of Laguna Tortuguero, Puerto Rico, were studied from 1974-75. The lagoon, with and area of 2.24 square kilometers and a volume of about 2.68 million cubic meters, contains about 5 percent of seawater. Drainage through a canal on the north side averages 0.64 cubic meters per second per day, flushing the lagoon about 7.5 times per year. Chloride and sodium are the principal ions in the water, rangi… more
Date: March 1978
Creator: Quiñones-Márquez, Ferdinand & Fusté, Luis A.
Location: None
open access

National Coastal Condition Report IV

Description: This report assesses the condition of the nation's estuaries and costal embayments, including the coastal waters of the conterminous United States, Southeastern Alaska, Hawaii, American Samoa, Guam, Puerto Rico, and the U.S. Virgin Islands.
Date: September 2012
Creator: United States. Environmental Protection Agency. Office of Research and Development.
open access

Parliamentary Rights of the Delegates and Resident Commissioner from Puerto Rico

Description: This report examines officers who represent territories and properties possessed or administered by the United States but not admitted to statehood, the five House Delegates and the Resident Commissioner from Puerto Rico are not Members of Congress, and do not enjoy all the same parliamentary rights as Members. They may vote and otherwise act similarly to Members in legislative committee; may not vote in the House, but may participate in debate and make most motions there; and, under a rule ado… more
Date: November 26, 2008
Creator: Davis, Christopher M.
open access

Political Status of Puerto Rico: Brief Background and Recent Developments for Congress

Description: This report provides policy and historical background about Puerto Rico's political status--a term of art referring to the relationship between the federal government and a territorial one. The report emphasizes recent developments that are likely to be most relevant for Congress. Congress has not altered the island's status since 1952, when it approved a territorial constitution.
Date: December 28, 2016
Creator: Garrett, R. Sam
open access

Political Status of Puerto Rico: Brief Background and Recent Developments for Congress

Description: This report provides policy and historical background about Puerto Rico's political status--a term of art referring to the relationship between the federal government and a territorial one. It emphasizes recent developments that are likely to be most relevant for Congress. Congress has not altered the island's status since 1952, when it approved a territorial constitution.
Date: June 12, 2017
Creator: Garrett, R. S.
open access

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: June 19, 2009
Creator: Bea, Keith & Garrett, R. Sam
open access

Political Status of Puerto Rico: Options for Congress

Description: This report discusses the current U.S.-Puerto Rico relationship, the history of said relationship, and the current political state of Puerto Rico, as well as relevant pieces of U.S. Congressional legislation concerning Puerto Rico.
Date: May 19, 2010
Creator: Bea, Keith & Garrett, R. Sam
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