# Diadi

Diadi, officially the Municipality of Diadi (Gaddang: Ili na Diadi; Ilocano: Ili ti Diadi; Tagalog: Bayan ng Diadi), is a municipality in the province of Nueva Vizcaya, Philippines. According to the 2020 census, it has a population of 19,236 people.
Diadi is 39 kilometres (24 mi) from Bayombong and 304 kilometres (189 mi) from Manila.

## History

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.
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.

## Geography
### Barangays

Diadi is politically subdivided into 19 barangays. Each barangay consists of puroks and some have sitios.
* Ampakleng
* Arwas
* Balete
* Bugnay
* Butao
* Decabacan
* Duruarog
* Escoting
* Langka
* Lurad
* Nagsabaran
* Namamparan
* Pinya
* Poblacion
* Rosario
* San Luis
* San Pablo
* Villa Aurora
* Villa Florentino

### Climate

Climate data for Diadi, Nueva Vizcaya :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Mean daily maximum °C (°F) | 24 (75) | 25 (77) | 28 (82) | 31 (88) | 31 (88) | 30 (86) | 29 (84) | 29 (84) | 29 (84) | 28 (82) | 26 (79) | 24 (75) | 28 (82) |
| Mean daily minimum °C (°F) | 18 (64) | 19 (66) | 20 (68) | 22 (72) | 23 (73) | 23 (73) | 23 (73) | 23 (73) | 23 (73) | 22 (72) | 21 (70) | 20 (68) | 21 (70) |
| Average precipitation mm (inches) | 119 (4.7) | 83 (3.3) | 54 (2.1) | 37 (1.5) | 133 (5.2) | 132 (5.2) | 161 (6.3) | 163 (6.4) | 153 (6.0) | 142 (5.6) | 160 (6.3) | 224 (8.8) | 1,561 (61.4) |
| Average rainy days | 18.4 | 13.6 | 11.6 | 9.4 | 19.3 | 21.9 | 23.9 | 23.4 | 21.1 | 16.3 | 18.1 | 21.4 | 218.4 |
| Source: Meteoblue ||||||||||||||

## Economy

Poverty incidence of Diadi
* 10
* 20
* 30
* 40
* 50
* 2000 43.28
* 2003 27.90
* 2006 18.80
* 2009 17.55
* 2012 16.52
* 2015 15.00
* 2018 14.33
* 2021 12.97
* Source: Philippine Statistics Authority

### Tilapia industry

On January 11, 2008, the Cagayan Bureau of Fisheries and Aquatic Resources (BFAR) stated that tilapia production grew and Cagayan Valley is now the Philippines’ tilapia capital. Production supply grew 37.25% since 2003, with 14,000 metric tons (MT) in 2007. The recent aquaculture congress found that the growth of tilapia production was due to government interventions: provision of fast-growing species, accreditation of private hatcheries to ensure supply of quality fingerlings, establishment of demonstration farms, providing free fingerlings to newly constructed fishponds, and the dissemination of tilapia to Nueva Vizcaya (in Diadi town). Former cycling champion Lupo Alava is a multi-awarded tilapia raiser in Bagabag, Nueva Vizcaya. Chairman Thompson Lantion of the Land Transportation Franchising and Regulatory Board, a retired two-star police general, has fishponds in La Torre, Bayombong, Nueva Vizcaya. Also, Nueva Vizcaya Gov. Luisa Lloren Cuaresma also entered into similar aquaculture endeavors in addition to tilapia production.

## Government
### Local government

Diadi is part of the lone congressional district of the province of Nueva Vizcaya. It is governed by a mayor, designated as its local chief executive, and by a municipal council as its legislative body in accordance with the Local Government Code. The mayor, vice mayor, and the municipal councilors are elected directly in polls held every three years.

### Elected officials

Members of the Municipal Council (2022–2025) :
| Position | Name |
| Governor | Jose V. Gambito |
| Mayor | Sandy M. Gayaton |
| Vice-Mayor | Rolito Dulnuan |
| Councilors | Romelyn Madume |
| Councilors | Waren Lunag |
| Councilors | Rhodora F. Bilog |
| Councilors | Elena G. Llantada |
| Councilors | Alanvin D. Tacadena |
| Councilors | Rommel F. Cariño |
| Councilors | Marvic S. Padilla |
| Councilors | Wilma Concillo |

## Tourism

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.

## Education

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. The office governs the public and private elementary and public and private high schools throughout the municipality.