Low-flow characteristics at selected sites on streams in northern and central Puerto Rico /

Includes bibliographical references (p. 10).Mode of access: Internet

Low-flow characteristics at selected sites on streams in southern and western Puerto Rico /

Shipping list no.: 96-0264-P.Includes bibliographical references (p. 9).Mode of access: Internet

Water balance and quantification of total phosphorus and total nitrogen loads entering and leaving the Lago de Cidra, central Puerto Rico /

Shipping list no.: 97-0254-P.Includes bibliographical references (p. 28).Mode of access: Internet

Assessment of nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico /

Shipping list no.: 99-0235-P.Includes bibliographical references (p. 36-38).Mode of access: Internet

Synoptic survey of water quality and bottom sediments, San Juan Bay estuary system, Puerto Rico, December 1994-July 1995 /

Shipping list no.: 98-0143-P.Includes bibliographical references (p. 46-48).Mode of access: Internet

Hydrology, water quality, and potential alternatives for water-resources development in the Río Majada and Río Lapa basins near the Albergue Olímpico, southern Puerto Rico /

Shipping list no.: 94-0161-P.Includes bibliographical references (p. 29).Mode of access: Internet