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The history of
Bang Kachao

Historically, Bang Kachao was primarily used for agricultural purposes, with its mangrove forests and wetlands providing fertile ground for farming and fishing communities. However, as Bangkok expanded rapidly during the latter half of the 20th century, concerns grew over environmental degradation and loss of green spaces. The threat of development loomed large, prompting grassroots movements and conservation efforts to protect Bang Kachao.

However, despite these conservation efforts, Bang Kachao has faced challenges and negative developments. Rapid urbanization and industrialization in neighboring areas have led to pollution of the Chao Phraya River, threatening the water quality and ecosystems of Bang Kachao. Additionally, illegal logging and encroachment have posed significant threats to the integrity of the area's mangrove forests and wetlands.

Looking ahead, continued collaboration between government entities, non-profit organizations, and local communities will be essential in addressing the ongoing threats to Bang Kachao's conservation. 

1780s

The island is born

In the 1780's, marine authorities created a small canal to cut about 18km of sailing time from sea-bound vessels. Although it was subsequently dammed as it released salty seawater into the Chao Praya and damaged plant and marine life, the long-lasting idea of Bang Kachao as an island came into being. 

1977

King Bhumibol designates Bang Kachao a conserved green space

Under the influence of Thailand’s King, Bang Kachao was designated as a conserved green area in 1977 by cabinet decision. It is today controlled by six separate governmental sub-districts. 

1995

National Environmental Quality Act

In the 1980s and 1990s, the Thai government recognized the ecological importance of Bang Kachao and took significant legislative steps to protect it. In 1995, the government designated Bang Kachao as a conservation area through the enactment of the National Environmental Quality Act. This designation marked a pivotal moment in the area's history, signaling official recognition of its environmental significance and the need for preservation.

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2001-2005

City plans 1 & 2

The first Bang Kachao city plan in 2001 severely restricted development in both the conservation area and the rest of the island. 

The 2005 city plan allowed development on the majority of the island, as long as developments were not larger than 200 metres squared.

2013

Samut Prakan city plan

This controversial third city plan allowed for even more construction by allowing the sale of protected land to developers, and significantly increasing the overall amount of land in Bang Kachao that could be developed.

2019

Environmental control law

The 2019 environmental control law significantly restricted the amount of construction that could be done in Bang Kachao, with bans on new commercial properties, buildings on state-owned land, and the height of buildings. Unfortunately, as satellite images show, significant amounts of development had already happened at this point.

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