The gulf has five major river sources. Flowing from the province of Pangasinan in the south are the Agno, Dagupan and Angalacan-Bued rivers. From the east in the province of La Union flow the Aringay and Bauang rivers.
History
During World War II, the Lingayen Gulf proved a strategically important theatre of war between American and Japanese forces. On 22 December 1941, the Japanese 14th Army under Lieutenant General Masaharu Homma landed on the Eastern part of the gulf at Agoo, Caba, Santiago and Bauang, where they engaged in a number of relatively minor skirmishes with the defenders, which consisted of a poorly equipped contingent of predominantly Filipino and American troops, and managed to successfully invade and occupy the gulf. Following the defeat, the next day General MacArthur issued the order to retreat from Luzon and withdraw to Bataan. For the next three years, the gulf remained under Japanese occupation prior to the Lingayen Gulf Landings. At 09:30 on 9 January 1945, the U.S. 6th Army conducted an amphibious landing on the gulf, following a devastating naval bombardment, with 68,000 troops landing on the first day alone, and a total of 203,608 in following landings along a beachhead, stretching from Sual, Lingayen, and Dagupan in the west, and San Fabian into the east. Despite the Americans' success in driving out the Japanese army encamped at the Gulf, the Americans suffered relatively heavy losses, particularly on their convoys due to Japanese kamikaze suicide attacks. From 4 through 12 January, a total of 24 ships were sunk and 67 damaged by kamikaze planes, including the battleships and , the heavy cruiserUSS Louisville, the light cruiser, and the minesweepers and. Following the amphibious landings, the Lingayen Gulf was turned into a vast supply depot for the rest of the war to support the American and Filipino assaults on Manila and the rest of Luzon, and thence to Okinawa.
Commemoration
On January 9, 2008, Gov. Amado Espino, Jr. and Vice Gov. Marlyn Primicias-Agabas established an annual commemoration to honor the war veterans. The resolution named January 9 as Pangasinan Veterans’ Day. In the 63rd anniversary of the Lingayen Gulf landings, PresidentFidel Ramos appealed to U.S. President George W. Bush for 24,000 surviving war veterans, to pass two legislative bills pending since 1968 at the U.S. House of Representatives — the Filipino Veterans’ Equity Act of 2006 and the Filipino Veterans’ Equity of 2005 sponsored by former Senator Daniel Inouye.
Economy
and salt-making are the primary industries on Lingayen Gulf. In fact, the name Pangasinan literally means “place where salt is made”. Salt is collected from seawater through evaporation, leaving the crystalline salt behind. The Lingayen Gulf is also home to the 1200 megawatt Sual Power Station, the Philippines largest coal power plant.