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Title: Environmental Assessment : Rio Culebrinas at Aguada and Aguadilla, Puerto Rico, Section 205 Detailed Project Report
Authors: United States. Army. Corps of Engineers. Jacksonville District
Keywords: Flood control
Environmental protection
Puerto Rico
Publisher: United States. Army. Corps of Engineers. Jacksonville District.
Abstract: A feasibility study offloading in southwestern Aguadilla and Espinar ward, Aguada, has led to the proposal of a structural solution to the frequent flooding caused by overflow of Rio Culebrinas into Caño Madre Vieja. The proposed project includes two earthen levees, to be built parallel to the north and south banks of Caño Madre Vieja. Other project features are: a short cutoff channel, to connect two meanders of the stream where the Aguadilla Levee will interrupt it, four drainage structures, interior drainage channels, and a borrow area located in Aguada. Additional features would include three paved road ramps across the levees. The project would require about 110,000 cubic yards of fill, of which about 30,000 cubic yards would come from the cutoff and drainage channels and the rest from the borrow site at nearby Tabiona! Quarry. Levees would be earthen, between 1 to 3.6 meters high, with 1 (v) on 2.5 (h) side slopes and a 3-meter wide crest. Excavated material unsuitable for levee construction would be stored temporarily on site and used to top-dress the levees after structural construction is complete. The recommended project would provide protection against 1% recurrence probability flooding (the "100 year" return frequency flood). Impacts ofthe proposed project on water quality, air quality, noise, visual aesthetic resources, wildlife habitat and endangered species are expected to be minimal. The proposed project levees would cover a corner of an existing mangrove stand and small areas of palustrine emergent wetlands (wet meadows). Total projected impacts will be to 1.5 acres of emergent prairie wetlands. Project channels would create approximately 9.6 acres of new open water and emergent wetlands. Archaeological deposits associated with the Iglesia de Espinar and deposits at PCI Site 1 will be adversely affected. In coordination with the State Historic Preservation Officer(SHPO), archaeological data recovery will be undertaken to mitigate adverse effects. The Iglesia de Espinar ruins will be protected by the project from future flooding. A Phase II archaeological assessment will be conducted on archaeological deposits at site PCI 2.
Description: Environmental Assessment
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Environmental Documents

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