Isla

Mona

Isla de

Culebra

Isla de

Vieques

St.

Thomas

St.

 John

St. Croix

Puerto Rico

C A R I B B E A N S E A

A T L A N T I C O C E A N

MAP AREA



 

 



SAN GERMÁN

YAUCO

CABO ROJO

PEÑUELAS

LAJAS

GUÁNICA

HORMIGUEROS

SABANA GRANDE

GUAYANILLA

Palmarejo

Tallaboa

Magas

Los Indios

Boquerón

El Combate

Puerto Real

Cabo

Rojo

Lajas

San Germán Sabana

Grande

Yauco

Peñuelas

Guayanilla

Guánica

Ensenada

Parguera

Refugio de Aves

de Boquerón

Caribbean Bureau of

Foreign Broadcast Service

Bosque Estátal de Guánica

Bosque Estátal de Guánica

Bosque Estátal

de Susua Punta Ostiones

Punta Carenero

Punta La Mela

Punta Guaniquilla

Punta Aguila

Punta Jagüeyes

Isla Guayacán

Isla Cueva

Isla

Magueyes

Isla Matei

Punta Jorabado

Cayos de

Caña Gorda

Punta Ballena

Punta

Verraco Punta

Guayanilla Cayo Palomas

Cayo Maria Langa

Cayo Caribe

Cayo Rio

Cayo Parguera

S I E R R A B E R M E J A

L A J A S V A L L E Y

G U A N A J I B O

V A L L E Y 

Laguna

Guaniquilla

Bahía de

Boquerón

Quebrada Boquerón

Río Viejo

Quebrada

Grande

Laguna

Cartagena

Canal de Riego Valle de Lajas

Río Guanajibo

Río

Cupeyes

Río

Cruces

Flores

Río

Río

Grande

Río Coco

Presada

Loco

Quebrada

Grande

Lago

Lucchetti

Río

Naranjo

Río

Yuaco

Río

Duey

Río

Yuaco

Río

Río Guayanilla

Guayanilla

Río

Macaná

Río

Guayanés

Río

Tallaboa

Río

Caño Loco

Boquerón

Bahía

Salinas

Bahía Sucia

Bahía

Montalva

Ensenada

Las Pardas

Bahía de Guánica

Bahía de

Guayanilla

Bahía de Tallaboa

C A R I B B E A N S E A

Ciénaga de

Cuevas

10 KILOMETERS

0

0

1

1

2

2

3

3

4

4

5

5678 9

6 MILES

67 ̊15' 67 ̊07'30" 67 ̊00' 66 ̊52'30" 66 ̊45'

18 ̊07'30"

18 ̊00'

17 ̊52'30"

Base from U.S. Geological Survey,

Arecibo, 1:100,000, unpublished

EXPLANATION

Percentage of sand and gravel

 0 to 25

 25 to 50

 50 to 75

 75 to 100

 Insufficient data

Well—Control point

C. PERCENTAGE OF SAND AND GRAVEL CONTAINED WITHIN ALLUVIAL-VALLEY AND FAN-DELTA AREAS



 

 



SAN GERMÁN

YAUCO

CABO ROJO

PEÑUELAS

LAJAS

GUÁNICA

HORMIGUEROS

SABANA GRANDE

GUAYANILLA

Palmarejo

Tallaboa

Magas

Los Indios

Boquerón

El Combate

Puerto Real

Cabo

Rojo

Lajas

San Germán Sabana

Grande

Yauco

Peñuelas

Guayanilla

Guánica

Ensenada

Parguera

Refugio de Aves

de Boquerón

Caribbean Bureau of

Foreign Broadcast Service

Bosque Estátal de Guánica

Bosque Estátal de Guánica

Bosque Estátal

de Susua Punta Ostiones

Punta Carenero

Punta La Mela

Punta Guaniquilla

Punta Aguila

Punta Jagüeyes

Isla Guayacán

Isla Cueva

Isla

Magueyes

Isla Matei

Punta Jorabado

Cayos de

Caña Gorda

Punta Ballena

Punta

Verraco Punta

Guayanilla Cayo Palomas

Cayo Maria Langa

Cayo Caribe

Cayo Rio

Cayo Parguera

S I E R R A B E R M E J A

L A J A S V A L L E Y

G U A N A J I B O

V A L L E Y 

Laguna

Guaniquilla

Bahía de

Boquerón

Quebrada Boquerón

Río Viejo

Quebrada

Grande

Laguna

Cartagena

Canal de Riego Valle de Lajas

Río Guanajibo

Río

Cupeyes

Río

Cruces

Flores

Río

Río

Grande

Río Coco

Presada

Loco

Quebrada

Grande

Lago

Lucchetti

Río

Naranjo

Río

Yuaco

Río

Duey

Río

Yuaco

Río

Río Guayanilla

Guayanilla

Río

Macaná

Río

Guayanés

Río

Tallaboa

Río

Caño Loco

Boquerón

Bahía

Salinas

Bahía Sucia

Bahía

Montalva

Ensenada

Las Pardas

Bahía de Guánica

Bahía de

Guayanilla

Bahía de Tallaboa

C A R I B B E A N S E A

Ciénaga de

Cuevas

10 KILOMETERS

0

0

1

1

2

2

3

3

4

4

5

5678 9

6 MILES

67 ̊15' 67 ̊07'30" 67 ̊00' 66 ̊52'30" 66 ̊45'

18 ̊07'30"

18 ̊00'

17 ̊52'30"

Base from U.S. Geological Survey,

Arecibo, 1:100,000, unpublished

0

0

–20

–40

0

0

10

0

0

–20

–20

–20

–40

–40

–40

0

–60

0

–20

0

0

0

20

20

20

–40

0

0

–20

–20

–40

–40

–40

EXPLANATION

Extent of fan-delta and alluvial plain areas

Structure contour—Shows altitude of base of alluvial, alluvial fan, and fan-

 delta sediments of Quaternary age. Contour interval 20 meters. Dashed

 where uncertain. Datum is sea level

Well—Control point

 Bottom of well reaches or exceeds total thickness of alluvial, alluvial fan,

 and fan-delta sequence

 Bottom of well does not reach base of alluvial, alluvial fan, and fan-delta 

 sequence

20

B. CONFIGURATION OF THE BEDROCK SURFACE UNDERLYING ALLUVIAL-VALLEY AND FAN-DELTA SEDIMENTS OF QUATERNARY AGE



 

 



SAN GERMÁN

YAUCO

CABO ROJO

PEÑUELAS

LAJAS

GUÁNICA

HORMIGUEROS

SABANA GRANDE

GUAYANILLA

Palmarejo

Tallaboa

Magas

Los Indios

Boquerón

El Combate

Puerto Real

Cabo

Rojo

Lajas

San Germán Sabana

Grande

Yauco

Peñuelas

Guayanilla

Guánica

Ensenada

Parguera

Refugio de Aves

de Boquerón

Caribbean Bureau of

Foreign Broadcast Service

Bosque Estátal de Guánica

Bosque Estátal de Guánica

Bosque Estátal

de Susua Punta Ostiones

Punta Carenero

Punta La Mela

Punta Guaniquilla

Punta Aguila

Punta Jagüeyes

Isla Guayacán

Isla Cueva

Isla

Magueyes

Isla Matei

Punta Jorabado

Cayos de

Caña Gorda

Punta Ballena

Punta

Verraco Punta

Guayanilla Cayo Palomas

Cayo Maria Langa

Cayo Caribe

Cayo Rio

Cayo Parguera

S I E R R A B E R M E J A

L A J A S V A L L E Y

G U A N A J I B O

V A L L E Y 

Laguna

Guaniquilla

Bahía de

Boquerón

Quebrada Boquerón

Río Viejo

Quebrada

Grande

Laguna

Cartagena

Canal de Riego Valle de Lajas

Río Guanajibo

Río

Cupeyes

Río

Cruces

Flores

Río

Río

Grande

Río Coco

Presada

Loco

Quebrada

Grande

Lago

Lucchetti

Río

Naranjo

Río

Yuaco

Río

Duey

Río

Yuaco

Río

Río Guayanilla

Guayanilla

Río

Macaná

Río

Guayanés

Río

Tallaboa

Río

Caño Loco

Boquerón

Bahía

Salinas

Bahía Sucia

Bahía

Montalva

Ensenada

Las Pardas

Bahía de Guánica

Bahía de

Guayanilla

Bahía de Tallaboa

C A R I B B E A N S E A

Ciénaga de

Cuevas

10 KILOMETERS

0

0

1

1

2

2

3

3

4

4

5

5678 9

6 MILES

67 ̊15' 67 ̊07'30" 67 ̊00' 66 ̊52'30" 66 ̊45'

18 ̊07'30"

18 ̊00'

17 ̊52'30"

Base from U.S. Geological Survey,

Arecibo, 1:100,000, unpublished

5

5

5

5

5

5

5

10 10

10

10

10

10

10

10

10

10

10

10

15

15

15

15

20 20 20

20

20

20

20

20

20

30

30

30

30

30

40

40

40

40

60

80 80

100

5

EXPLANATION

Deposits of Quaternary age

 Beach deposits

 Marsh or swamp deposits

 Alluvium

Rocks of Tertiary (?) age—Quartz sand deposits

Rocks of Pliocene (?) to Oligocene age

 Ponce Limestone

 Guanajibo Formation

 Juana Díaz Formation (limestone facies)

 Juana Díaz Formation (clastic facies)

Rocks of Tertiary and Cretaceous age—Intrusive rocks

Rocks of Cretaceous age—Volcanic and sedimentary rocks

Rocks of Early Cretaceous-Late Jurassic age—Metamorphic, sedimentary, 

 and igneous rocks

Contour—Shows altitude of fan-delta, alluvial fan, and alluvial-valley deposits.

 Contour interval, in meters, is variable. Datum is sea level

Fault

Contact

20

A. GEOLOGY OF THE SOUTH COAST GROUND-WATER PROVINCE

U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

PROFESSIONAL PAPER 1419

Geology and hydrogeology of the South-coast groundwater province between Cabo Rojo and Ponce, Puerto Rico—PLATE 2

Renken, Robert A., and others, 2002, Geology and hydrogeology of the Caribbean Islandsaquifer system of the Commonweatlh of Puerto Rico and the U.S. Virgin Islands

GEOLOGY AND HYDROGEOLOGY OF THE SOUTH-COAST GROUND-WATER PROVINCE BETWEEN CABO ROJO AND PONCE, PUERTO RICO

By

Robert A. Renken, Fernando Gómez-Gómez, and Jesús Rodriquez-Martinez

2002