Cerrillos River

Cerrillos River (Spanish: Río Cerrillos) is a river in the municipality of Ponce, Puerto Rico. Río Cerrillos has its origin in barrio Anón and runs south until it feeds into Bucaná River. Río Cerrillos is commonly known by the locals as Maragüez River, because most of its course runs through Barrio Maragüez. This river is one of the 14 rivers in the municipality. The river has a discharge of 24,000 cubic feet per second,^[8] making it the second most affluent river in the municipality after Río Jacaguas.

Cerrillos River Río Maragüez
Cerrillos River near the Lake Cerrillos Dam
Location of mouth
Etymology	Barrio Cerrillos
Native name	Río Cerrillos (Spanish)
Location
Commonwealth	Puerto Rico
Municipality	Ponce
Physical characteristics
Source
• location	Barrio Anón
• coordinates	18.1319046°N 66.5798949°W / 18.1319046; -66.5798949[1]
• elevation	1,200 feet (370 m)[3]
Mouth
• location	Río Bucaná
• elevation	69 feet (21 m)[4]
Length	18.5 miles (29.8 km)[5]
Basin size	17.80 sq mi (46.1 km2)[6]
Discharge
• average	24,000 cu ft/s (680 m3/s)[7]
Basin features
Progression	Anón Maragüez Cerrillos
River system	Río Bucaná
Tributaries
• left	Río Bayagán Quebrada Ausubo Río San Patricio
• right	Río Prieto

Map showing the location of Río Cerrillos among the other rivers in the municipality. The area in pink represents the urban zone of the city

Course

From its origin about 1 kilometer south of the intersection of PR-139 and PR-143, Río Cerrillos runs south for 1.8 kilometers where it is fed by Río Prieto west of PR-139. From this point on, Rio Cerrillos runs parallel to PR-139 for 2 kilometers in barrio Anón before reaching barrio Maragüez. Continuing on its southernly course for about 1.2 kilometers, Río Cerrillos is fed by Río San Patricio. Five kilometers further downstream Río Cerrillos forms Lake Cerrillos, as a result of its dam. Flowing out of the Cerrillos dam, Río Cerrillos runs south for 1 kilometer until it enters barrios Machuelo Arriba and barrio Cerrillos, being the boundary between the two barrios. The river continues its southern course parallel to PR-139 for 5 kilometers until it reaches PR-5139. In another kilometer downstream it is fed by Quebrada Ausubo, and another kilometer further south it is fed by Río Bayagán. At this point it feeds into Río Bucaná where it terminates.^[9][10]

The following table summarizes the course of Río Cerrillos in terms of roads crossed. Roads are listed as the river flows from its origin in the mountains of Barrio Anón, north of the city of Ponce, to its merging with Río Bayagán in Barrio Machuelo Arriba to form Río Bucaná (N/A = Data not available):

No.	Barrio	Road	Road's km marker	NBI ID[11]	Bridge name (if any)	Direction (of bridge traffic)	Coordinates	Notes
1	Maragüez	PR-139	10.5	22051	Unnamed	Both	18°6′18.3954″N 66°35′16.1874″W	1.6 km N of entrance to Area Recreativa del Lago Cerrillos y Atracadero, Barrio Maragüez
2	Machuelo Arriba	PR-5139	2.5	29131	Unnamed	Both	18°3′34.9554″N 66°35′10.464″W	0.5 km E of INT of PR-139, PR-5139, and PR-139R (aka, Ave. Principal)
3	Machuelo Arriba	Camino Sector Wachin	not marked	28741	Unnamed	Both	18°3′30.1674″N 66°35′2.4″W	0.1 km S of PR-5139 and Cam. Sector Wachin; Off PR-5139 km 2.0

Cerrillos Lake and Dam

Cerrillos is the feeder river for Lake Cerrillos Dam in Barrio Maragüez, in the municipality of Ponce. The lake is an artificial reservoir holding 47,900 acre-feet (59,100,000 m3) of water. The dam that made the lake possible was completed in 1992. The lake is surrounded by the Cerrillos State Forest north of the dam. The area immediately south of the dam is a park, the Luis A. Wito Morales Park.

See also

• List of rivers of Puerto Rico
• List of rivers of Ponce

References

1. U.S. Geological Survey Geographic Names Information System: Río Cerrillos
2. U.S. Geological Survey Geographic Names Information System: Río Cerrillos
3. Maptest. Archived 18 February 2010 at the Wayback Machine Government of the Commonwealth of Puerto Rico. General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Retrieved 24 October 2011.
4. Maptest. Archived 18 February 2010 at the Wayback Machine Government of the Commonwealth of Puerto Rico. General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Retrieved 24 October 2011.
5. Projecto Salon Hogar (Estudios Sociales, Puerto Rico, Ponce, Hidrografia). Retrieved 8 August 2009.
6. Ferdinand Quiñones and Karl G. Johnson. The Floods of May 17–18, 1985 and October 6–7, 1985 in Puerto Rico. U.S. Geological Survey. Open File Report 87-123. Prepared in Conjunction with the Puerto Rico Department of Natural Resources, Puerto Rico Environmental Quality Board, and the Puerto Rico Highway Authority. San Juan, Puerto Rico. 1987. Page 15.
7. Ferdinand Quiñones and Karl G. Johnson. The Floods of May 17–18, 1985 and October 6–7, 1985 in Puerto Rico. U.S. Geological Survey. Open File Report 87-123. Prepared in Conjunction with the Puerto Rico Department of Natural Resources, Puerto Rico Environmental Quality Board, and the Puerto Rico Highway Authority. San Juan, Puerto Rico. 1987. Page 15.
8. Ferdinand Quiñones and Karl G. Johnson. The Floods of May 17–18, 1985 and October 6–7, 1985 in Puerto Rico. U.S. Geological Survey. Open File Report 87-123. Prepared in Conjunction with the Puerto Rico Department of Natural Resources, Puerto Rico Environmental Quality Board, and the Puerto Rico Highway Authority. San Juan, Puerto Rico. 1987. Page 15.
9. Salon Hogar.com-Ponce, Hidrografia Retrieved 18 November 2011.
10. Maptest. Archived February 18, 2010, at the Wayback Machine Government of the Commonwealth of Puerto Rico. General Purpose Population Data, Census 2000. Unidad de Sistemas de Información Geográfica, Área de Tecnología de Información Gubernamental, Oficina de Gerencia y Presupuesto. Gobierno de Puerto Rico. Retrieved 18 November 2011.
11. National Bridge Inventory Data: Puerto Rico, Ponce. Archived 22 February 2019 at the Wayback Machine James Baughn. BridgeReports.com 2018. Accessed 26 November 2018.

External links

• USGS Hydrologic Unit Map – Caribbean Region (1974)
• Rivers of Puerto Rico
• USGS Maps of Municipality of Ponce Rivers, showing Rio Cerrillos and others