Diadi

Diadi was formerly a barangay of Bagabag named Picat. It was originally founded by the Spaniards in the 18th century at the summit of Mount Namamparang, before being moved down to its foot. The settlement served as a garrison and rest stop along the mountain road between Isabela and Nueva Vizcaya, which was frequently plagued by pagan headhunters, and a resettlement site for christianized Ifugaos and Ilongots.^[6]

House Bill No. 182, titled "An Act Creating the Municipal District of Diadi in the Province of Nueva Vizcaya," was introduced by Congressman Leonardo B. Perez on February 28, 1966. It was subsequently approved by the Committee on Provincial and Municipal Governments in Committee Report No. 54. Later, in May 1967, Senator John Osmeña issued Committee Report 1053 recommending passage of the Bill. On 17 June 1967, Republic Act No. 4973 was approved by both chambers of Congress, thus creating the Municipality of Diadi.^[7]

Diadi is situated 40.11 kilometres (24.92 mi) from the provincial capital Bayombong, and 337.52 kilometres (209.73 mi) from the country's capital city of Manila.

Poverty incidence of Diadi

Source: Philippine Statistics Authority^{[14][15][16][17][18][19][20][21]}

Lower Magat Eco-Tourism Park is located in Municipality of Diadi along the Magat River, a 1,200 hectares (3,000 acres) eco-park acquired by the provincial government for preservation later turned into a nature park. The parks includes lagoons, camping grounds, swimming pools, cottages, and recreational activity facilities for hiking and biking.^[24]

The Schools Division of Nueva Vizcaya governs the town's public education system. The division office is a field office of the DepEd in Cagayan Valley region.^[25] The Diadi Schools District Office governs all public and private elementary and high schools throughout the municipality.^[26]