Download or read book Evaluation of groundwater quality and selected hydrologic conditions in the South Coast aquifer Santa Isabel area Puerto Rico 2008 09 written by José M. Rodríguez and published by CreateSpace. This book was released on 2013 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation to define groundwater-quality conditions, with emphasis on the distribution of nitrate concentration, to identify potential sources leading to elevated nitrate concentrations and to estimate the nitrate loads from major sources, was conducted by the U.S. Geological Survey in the South Coast aquifer, Santa Isabel area, between January 2008 and May 2009. The study area covers approximately 5,800 hectares of the south coastal plain of Puerto Rico and 470 hectares in the foothills within the municipality of Santa Isabel. Agriculture is the principal land use in the area and includes the cultivation of diverse truck-farm crops, bioengineered crops for seed production, and until 2007, commercial poultry farms. Nitrate concentrations in groundwater near the center of the South Coast aquifer, Santa Isabel area, have increased from a range of 0.9 to 5.9 milligrams per liter as nitrogen in 1967 to a range of 1.3 to 23.6 milligrams per liter as nitrogen in 2008. Analyses for the stable isotope ratios of nitrogen-15/ nitrogen-14 and oxygen-18/oxygen-16 in nitrate were used to infer the source of nitrate in the aquifer and in the foothills north of the coastal plain. Results obtained from the samples analyses of stable isotope ratios indicate that the high nitrate concentrations in the western and central parts of the study area were in the range typically associated with soil nitrogen.

Download or read book Evaluation of Groundwater Quality and Selected Hydrologic Conditions in the South Coast Aquifer Santa Isabel Area Puerto Rico 2008 09 written by Jose Rodriguez and published by Createspace Independent Publishing Platform. This book was released on 2014-06-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation to define groundwater-quality conditions, with emphasis on the distribution of nitrate concentration, to identify potential sources leading to elevated nitrate concentrations and to estimate the nitrate loads from major sources, was conducted by the U.S. Geological Survey in the South Coast aquifer, Santa Isabel area, between January 2008 and May 2009. The study area covers approximately 5,800 hectares of the south coastal plain of Puerto Rico and 470 hectares in the foothills within the municipality of Santa Isabel. Agriculture is the principal land use in the area and includes the cultivation of diverse truck-farm crops, bioengineered crops for seed production, and until 2007, commercial poultry farms. Nitrate concentrations in groundwater near the center of the South Coast aquifer, Santa Isabel area, have increased from a range of 0.9 to 5.9 milligrams per liter as nitrogen in 1967 to a range of 1.3 to 23.6 milligrams per liter as nitrogen in 2008. Analyses for the stable isotope ratios of nitrogen-15/ nitrogen-14 and oxygen-18/oxygen-16 in nitrate were used to infer the source of nitrate in the aquifer and in the foothills north of the coastal plain. Results obtained from the samples analyses of stable isotope ratios indicate that the high nitrate concentrations in the western and central parts of the study area were in the range typically associated with soil nitrogen.

Download or read book Hydrologic Conditions in the South Coast Aquifer Puerto Rico written by Sigfredo Torres-Gonza̹lez and published by . This book was released on 2015 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Budget and Hydraulic Aspects of Artificial Recharge South Coast of Puerto Rico written by James E. Heisel and published by . This book was released on 1979 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analog model was used to evaluate ground-water conditions on the south coast of Puerto Rico. Water levels during a normal period and during an extended drought were simulated. Recharge and discharge values are reported. The model was also used to evaluate the possibilities of using treated waste water to recharge the aquifer. Three methods were considered: infiltration basins, injection, and irrigation. The tests were planned to determine what changes in water levels would result if certain rates of application were used. Because of the limited vertical hydraulic conductivity, irrigation is suggested as the most practical method of waste-water use. Injection, though practical from the mechanical standpoint, may be ojectionable from health and aesthetic standpoints. (Author).

Download or read book Effects of Changing Irrigation Practices on the Ground water Hydrology of the Santa Isabel Juana D az Area South Central Puerto Rico written by Orlando Ramos-Ginés and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic Study Western Division South Coast Irrigation District for Puerto Rico Water Resources Authority written by United States. Bureau of Reclamation and published by . This book was released on 1964 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potentiometric surface of the alluvial aquifer and hydrologic conditions in the Santa Isabel Juana Diaz area Puerto Rico April 1987 written by F. Rodriguez-del-Rio and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogeology of the Karst of Puerto Rico written by Ennio V. Giusti and published by . This book was released on 1978 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Analog Model Study of the Alluvial Aquifer in the Yabucoa Valley Puerto Rico written by Tully M. Robison and published by . This book was released on 1973 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potentiometric Surface of the Alluvial Aquifer and Hydrologic Conditions in the Santa Isabel Juana D az Areas Puerto Rico March to April 1987 written by Félix Rodríguez del Río and published by . This book was released on 1990 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geohydrology of the Aquifers that May be Affected by the Surface Mining of Coal in the Fruitland Formation in the San Juan Basin Northwestern New Mexico written by Robert Gene Myers and published by . This book was released on 1986 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summary of the San Juan Structural Basin Regional Aquifer system Analysis New Mexico Colorado Arizona and Utah written by Gary W. Levings and published by . This book was released on 1996 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface water Water quality and Ground water Assessment of the Municipio of Mayaguez Puerto Rico 1999 2002 written by Jesús Rodríguez-Martínez and published by . This book was released on 2004 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elevation of the Water table Surface for the Alluvial Aquifer and Hydrologic Conditions in the Santa Isabel Juana D az Area Puerto Rico March 1986 written by Angel Román-Más and published by . This book was released on 1987 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimates of Ground water Recharge from Precipitation to Glacial deposit and Bedrock Aquifers on Lopez San Juan Orcas and Shaw Islands San Juan County Washington written by Laura A. Orr and published by . This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Summary Appraisals of the Nation s Ground water Resources Caribbean Region written by Fernando Gómez-Gómez and published by . This book was released on 1980 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology and Hydrogeology of the Caribbean Islands Aquifer System of the Commonwealth of Puerto Rico and the U S Virgin Islands written by Robert A. Renken and published by U S Geological Survey. This book was released on 2002 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: