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| Trị An Reservoir | |
|---|---|
| Name | Trị An Reservoir |
| Location | Đồng Nai Province, Vietnam |
| Type | Reservoir |
| Inflow | Đồng Nai River |
| Outflow | Đồng Nai River |
| Basin countries | Vietnam |
| Area | 323 km2 |
| Volume | 2.7 km3 |
| Built | 1980s |
| Cities | Vĩnh Cửu District, Trảng Bom District, Thống Nhất District |
Trị An Reservoir is a large artificial lake in Đồng Nai Province, Vietnam, created by damming the Đồng Nai River for hydroelectric power, water supply, and flood control. The project intersects regional infrastructure such as the Trị An Dam, local districts including Vĩnh Cửu District and Thống Nhất District, and national programs for energy like Vietnam Electricity. The reservoir influences nearby landscapes such as the Cát Tiên National Park and connects to transport routes serving Ho Chi Minh City and Biên Hòa.
The reservoir was developed to support the Trị An Dam hydroelectric facility operated by Vietnam Electricity and is situated within administrative areas of Đồng Nai Province, bordering provinces including Bình Dương and Bình Phước. Its surface area of roughly 323 km2 and storage capacity feed downstream infrastructure linked to Dong Nai River Basin management, regional irrigation projects, and urban water demands in metropolitan centers such as Ho Chi Minh City and Bien Hoa. The reservoir's creation reshaped local settlements including Vĩnh Cửu, Trảng Bom, and Thống Nhất District and interacts with conservation zones like Cát Tiên National Park and Vườn Quốc gia Cát Tiên.
Planning for the reservoir occurred during the post-colonial industrialization period of Vietnam with technical input from international firms and domestic agencies including Vietnam Electricity and provincial authorities of Đồng Nai Province. Construction of the Trị An Dam began in the late 1970s and continued into the 1980s, involving contractors, engineering teams, and workforce drawn from local communes such as those in Vĩnh Cửu District and neighboring districts. The project paralleled other national energy endeavors like the Hòa Bình Dam and followed policies set by central bodies including the Ministry of Industry and Trade (Vietnam). Resettlement programs relocated households from inundated areas to sites administered by Đồng Nai People's Committee and local communes, creating social changes similar to those observed in development projects across Mekong Delta regions.
The reservoir occupies a basin of the Đồng Nai River within the Dong Nai River Basin and is fed by tributaries draining elevated terrain toward the Trị An Dam site. Surrounding topography includes lowland plains, granite hills, and forested tracts contiguous with Cát Tiên National Park and watershed areas extending toward Bình Phước Province. Seasonal monsoon patterns associated with the South China Sea and regional climatology drive inflow variability, with runoff regimes influenced by upstream reservoirs and tributaries such as the La Ngà River. Hydrological management coordinates releases to downstream nodes including Biên Hòa and urban intakes for Ho Chi Minh City while balancing flood mitigation and generation at the Trị An Dam facility.
The inundation created freshwater habitats that host fish assemblages, aquatic plants, and bird species shared with nearby protected areas like Cát Tiên National Park and Cat Tien National Park. Native ichthyofauna includes species related to regional faunal lists compiled for the Dong Nai River Basin, supporting fisheries utilized by communities in Vĩnh Cửu and Thống Nhất District. Riparian forests and wetlands around the reservoir provide habitat for avifauna recorded in inventories conducted by institutions such as the Vietnam Academy of Science and Technology and conservation groups collaborating with BirdLife International partners. However, hydrological alteration affected pre-existing ecosystems similar to impacts documented in studies of Tonle Sap and other Southeast Asian impoundments.
The reservoir underpins electricity generation at the Trị An Dam plant contributing to the national grid managed by Vietnam Electricity and supports irrigation schemes servicing agricultural zones in Đồng Nai Province and adjacent provinces. Local economies derive income from capture fisheries, aquaculture, and transport services linking communes like Vĩnh Cửu with regional markets in Bien Hoa and Ho Chi Minh City. The impoundment influenced settlement patterns, prompting resettlement overseen by provincial authorities such as the Đồng Nai People's Committee and community development programs supported by national ministries including the Ministry of Agriculture and Rural Development (Vietnam).
Environmental concerns include sedimentation affecting storage capacity, nutrient loading from agricultural runoff in catchments of Bình Dương and Bình Phước, invasive species risks analogous to other reservoirs, and impacts on terrestrial habitats contiguous with Cát Tiên National Park. Management responses involve hydrological regulation by Vietnam Electricity, basin planning coordinated with agencies responsible for the Dong Nai River Basin and interventions guided by environmental policy instruments of the Ministry of Natural Resources and Environment (Vietnam). Collaborative monitoring and restoration efforts have been undertaken with research institutions such as the Vietnam Academy of Science and Technology and international partners engaged in watershed conservation.
The reservoir and adjacent landscapes attract visitors for boating, angling, birdwatching, and eco-tourism connected to Cát Tiên National Park, recreational sites in Vĩnh Cửu District, and picnic areas frequented by residents of Bien Hoa and Ho Chi Minh City. Tourism development includes facilities managed by local enterprises, community-based initiatives supported by the Đồng Nai Province Tourism Department, and routes linking to regional attractions such as Cát Tiên National Park and cultural sites in Đồng Nai City. Recreational use is balanced against conservation objectives and infrastructure operated by Vietnam Electricity and provincial authorities to ensure safety and environmental compliance.
Category:Reservoirs in Vietnam Category:Đồng Nai Province