Rio Grande de Loiza PR (I)

April 2022


Rio Grande de Loiza PR (C)
Construction (C)
Congressional District: Puerto Rico


The Río Grande de Loíza basin, the island’s largest, is located just east of San Juan and covers approximately 310 square miles. The project is located in the cities of Gurabo and Caguas. Almost 5,000 families are affected by flash floods, as well as hundreds of commercial structures and public facilities. The authorized plan of improvement includes channelization of Río Bairoa and Río Caguitas and levees along the Río Grande de Loíza and Río Gurabo to protect urbanized areas.


a. P.L. 115-123: Bi-Partisan Budget Act of 2018, Supplemental:

Current Working Estimate $55,000
Allocation thru FY21 $44,292
Allocation for FY22 $0



Puerto Rico Department of Natural and Environmental Resources (DNER)
P.O. Box 366147
San Juan, Puerto Rico 00936


The project for flood control, Rio Grande De Loiza, Puerto Rico, was initially authorized by section 101(19) of the Water Resources Development Act of 1992 (106 STAT. 4803) and deauthorized on October 1, 2012, under Section 1001(b)(2) the Water Resources Development Act of 1986. Project received funding under P.L. 115-123: Bi-Partisan Budget Act of 2018, Supplemental Program but deferred due to lack of funding to cover updated cost.  The project was determined to be technically feasible, economically justified, and environmentally acceptable in a Scope Verification Report dated June 12, 2019, and approved by the Assistant Secretary of the Army (Civil Works) on July 29, 2019. Project awaiting funding allocation under investigations to complete a Chief's Report for reauthorization.