Overview

The Wuluwati Dam is a significant hydroelectric infrastructure project located in Hotan County, Xinjiang, China. Situated on the Karakash River, this facility operates as a concrete-face rock-fill dam, a specific engineering design that combines a rock-fill core with a concrete slab face to manage water retention and structural stability. The dam serves multiple critical functions for the region, primarily providing water supply, generating hydroelectric power, and offering recreational opportunities for the local population. Its operational status remains active, contributing to the energy mix and water management strategies of the Xinjiang region.

Construction of the Wuluwati Dam commenced in 1993, marked by the initial diversion of the Karakash River to facilitate building activities. Actual construction on the dam structure itself began in 1995. The project reached a key milestone in December 2000 when the first two generators became operational, with the final two generators coming online in January 2001. This phased commissioning allowed for a gradual integration of the plant's output into the regional grid.

The dam stands 138 meters tall and creates a substantial reservoir with a capacity of 347,000,000 cubic meters. This water storage capability is essential for regulating the flow of the Karakash River, ensuring consistent water supply for downstream needs and maintaining optimal conditions for power generation. The hydroelectric power station associated with the dam is equipped with four Francis turbine-generators, each with a capacity of 15 MW, resulting in a total installed capacity of 60 MW. The use of Francis turbines, known for their versatility and efficiency in medium-head applications, underscores the technical design choices made to maximize energy output from the Karakash River's flow characteristics.

Why it matters

The Wuluwati Dam represents a critical node in the energy and water infrastructure of Xinjiang, specifically within Hotan County. As a concrete-face rock-fill structure on the Karakash River, it integrates multiple utility functions—hydroelectric power generation, water supply, and recreation—into a single engineering solution. This multi-purpose design is characteristic of strategic infrastructure in the region, where efficient resource utilization is essential for supporting local populations and industrial activity. The dam's operational status since 2000 underscores its role as a mature asset in the regional grid, providing consistent power output and water regulation for downstream users.

Regional Energy Contribution

With an installed capacity of 60 MW, the Wuluwati Dam contributes significantly to the power supply in the Karakash River basin. The power station utilizes four 15 MW Francis turbine-generators, a configuration chosen for its efficiency in medium-head hydroelectric applications. The commissioning of the first two generators in December 2000, followed by the final two in January 2001, marked a key phase in the modernization of Xinjiang's hydroelectric network. This capacity helps stabilize the local grid, offering a reliable baseload or peaking power source depending on seasonal water flow variations. In a region increasingly reliant on diverse energy mixes, such hydroelectric assets provide crucial flexibility and renewable energy credits to the provincial energy portfolio.

Water Management and Reservoir Capacity

Beyond electricity generation, the dam's 138 m height creates a reservoir with a storage capacity of 347,000,000 m3. This substantial volume plays a vital role in water management for Hotan County, ensuring consistent water supply for agricultural, municipal, and recreational needs. The Karakash River, a significant tributary in the Tarim Basin, experiences seasonal fluctuations; the Wuluwati Dam mitigates these variations by regulating flow rates. Construction began with river diversion in 1993, with main dam construction starting in 1995, reflecting a strategic long-term investment in the basin's hydraulic infrastructure. The reservoir also supports recreational activities, enhancing the socio-economic value of the dam for local communities. By balancing power generation with water retention, the Wuluwati Dam exemplifies integrated resource management in China's western provinces, supporting both economic development and environmental sustainability in the Xinjiang region.

Technical specifications

The Wuluwati Dam is engineered as a concrete-face rock-fill structure, a design choice that utilizes a core of compacted rock fill protected by a thin upstream slab of concrete. This construction method is well-suited for the geological conditions of the Karakash River in Hotan County, Xinjiang, China. The dam's primary functions include hydroelectric power generation, water supply management, and recreational use. Construction activities commenced with the diversion of the river in 1993, with main dam construction following in 1995.

Dam and Reservoir Characteristics

The structure rises to a height of 138 m (453 ft). Behind the dam, the reservoir holds a total capacity of 347,000,000 m3 (281,317 acre⋅ft). These dimensions allow for significant water retention, supporting both the hydraulic head required for power generation and the volumetric storage needed for regional water supply.

Parameter Value
Dam Type Concrete-face rock-fill
Height 138 m (453 ft)
Reservoir Capacity 347,000,000 m3 (281,317 acre⋅ft)
Location Karakash River, Hotan County, Xinjiang, China

Power Station Specifications

The associated power station is equipped with four Francis turbine-generators. Each unit has an installed capacity of 15 MW, contributing to the plant's total operational capacity of 60 MW. This phased commissioning allowed for early power delivery while construction of the downstream components continued.

Power Station Parameter Value
Turbine Type Francis
Number of Generators 4
Capacity per Unit 15 MW
Total Installed Capacity 60 MW
First Unit Commissioned December 2000
Last Unit Commissioned January 2001

Construction history

The construction of the Wuluwati Dam involved a phased approach beginning with the diversion of the Karakash River in 1993. This initial hydrological intervention preceded the main structural works, which commenced in 1995. The project utilized a concrete-face rock-fill design, a specific engineering choice for the dam's structure on the Karakash River in Hotan County, Xinjiang. The power station was equipped with four Francis turbine-generators, each with a capacity of 15 MW. The commissioning of these units occurred in two distinct stages. The first two generators became operational in December 2000. The final two units followed shortly after, coming online in January 2001. This sequential activation marked the transition of the dam from a construction site to an operational hydroelectric facility, contributing to the water supply, power generation, and recreation functions for the region.
Year Event
1993 River diversion begins
1995 Main dam construction begins
December 2000 First two generators operational
January 2001 Last two generators operational

How does the Wuluwati Dam generate power?

The Wuluwati Dam generates electricity through a hydroelectric power station equipped with four Francis turbine-generators, each with a capacity of 15 MW. This configuration provides the facility with its total installed capacity of 60 MW, as confirmed by structured data sources. The generation process relies on the potential energy stored in the reservoir, which the dam withholds at a volume of 347,000,000 m3 (281,317 acre⋅ft). Water from the Karakash River is channeled through the concrete-face rock-fill structure to drive the turbines, converting hydraulic energy into mechanical rotation and subsequently into electrical power.

Francis Turbine Mechanics

The use of Francis turbines is a standard engineering choice for medium-head hydroelectric projects. These turbines are reaction turbines, meaning the water pressure changes as it flows through the runner blades. In the Wuluwati system, water enters the turbine radially and exits axially. The four units were brought online in two phases: the first two generators became operational in December 2000, and the last two followed in January 2001. This staged commissioning allowed for testing and integration of the 15 MW units before full operational status was achieved. The Francis design is particularly efficient for the head provided by the 138 m (453 ft) tall dam structure.

Dam Structure and Water Management

The concrete-face rock-fill (CFR) design is critical to the dam's ability to maintain the water head required for power generation. This type of dam consists of a core of compacted rock fill with a thin concrete slab facing the upstream side. The CFR construction began in 1995, following the initial diversion of the Karakash River in 1993. The structure not only supports the hydroelectric function but also provides water supply and recreation. The reservoir's capacity of 347,000,000 m3 ensures a consistent flow of water to the turbines, even during seasonal variations in the Karakash River's discharge. The dam's location in Hotan County, Xinjiang, places it in a region where water management is essential for both energy production and local resource allocation.

What is the role of the Karakash River?

The Karakash River serves as the critical hydrological foundation for the Wuluwati Dam, functioning as the primary water source that enables the facility's multi-purpose operational profile. Located in Hotan County within the Xinjiang region of China, the river provides the necessary volume and elevation head required to sustain the concrete-face rock-fill structure and its downstream power generation capabilities. The dam’s design is specifically engineered to intercept and regulate the natural flow of the Karakash, transforming a variable riverine resource into a controlled reservoir with a total capacity of 347,000,000 m3 (281,317 acre⋅ft). This substantial storage volume is essential for balancing the competing demands of water supply, hydroelectric power generation, and recreational use in the arid landscape of Hotan County.

Flow Regulation and Irrigation Support

Management of the Karakash River’s flow is central to the dam’s utility beyond electricity production. By withholding water within its 138 m (453 ft) tall structure, the Wuluwati Dam creates a buffer against seasonal fluctuations in river discharge. This regulation is particularly important for local water supply needs, ensuring a more consistent availability of fresh water for surrounding communities and agricultural activities. The reservoir acts as a strategic storage unit, allowing operators to release water during periods of high demand or low natural inflow, thereby stabilizing the irrigation potential in the Hotan County area. The ability to modulate the river’s output directly supports regional agricultural stability, reducing the vulnerability of crops to the erratic flow patterns often characteristic of mountain-fed rivers in Xinjiang.

Hydroelectric Generation Mechanics

The interaction between the Karakash River and the dam’s infrastructure is the driving force behind the plant’s 60 MW installed capacity. The river’s water is channeled through the dam’s power station, where it drives four 15 MW Francis turbine-generators. This configuration relies on the continuous flow and head pressure provided by the Karakash to convert kinetic and potential energy into electrical power. The operational timeline, with the first two generators becoming active in December 2000 and the final two in January 2001, reflects the phased integration of the river’s flow into the grid. The dam does not merely passively sit on the river; it actively manages the hydraulic energy of the Karakash, ensuring that the water resource is efficiently harnessed for energy production while maintaining the ecological and hydrological balance required for the reservoir’s 347,000,000 m3 capacity.

Water supply and recreation

The Wuluwati Dam provides critical water supply and hydroelectric power generation services to the region, alongside significant recreational opportunities. As a concrete-face rock-fill dam located on the Karakash River in Hotan County, Xinjiang, China, the structure plays a multifaceted role in local infrastructure and resource management. The dam's primary function extends beyond energy production, serving as a vital water reservoir that supports regional water needs. This water supply capability is essential for the surrounding areas, contributing to both agricultural and municipal water demands in the Xinjiang region. The reservoir created by the dam holds a substantial volume of 347,000,000 m3 (281,317 acre⋅ft), which is managed to ensure consistent water availability throughout the year. This large storage capacity allows for effective water regulation, helping to mitigate seasonal variations in river flow and ensuring a reliable water source for downstream users. The dam's location on the Karakash River, a significant waterway in the Hotan County area, enhances its strategic importance for regional water management.

Recreational Opportunities

In addition to its utility functions, the Wuluwati Dam offers notable recreational benefits to the local population and visitors. The reservoir formed by the 138 m (453 ft) tall dam creates a large body of water that serves as a key recreational asset in the region. This expansive water surface supports various leisure activities, making the area a popular destination for outdoor enthusiasts and tourists visiting Xinjiang. The scenic landscape surrounding the dam and reservoir provides opportunities for boating, fishing, and other water-based recreation, contributing to the local tourism industry. The recreational value of the Wuluwati Dam reservoir enhances the quality of life for residents of Hotan County and attracts visitors to the area, fostering economic activity linked to tourism and leisure. The combination of water supply, hydroelectric power, and recreation demonstrates the dam's comprehensive impact on the region, serving multiple community needs simultaneously. Construction of the dam began in 1993 with the river's diversion, and the first two generators became operational in December 2000, with the last two following in January 2001. This timeline reflects the phased development of the project, which has since provided sustained benefits to the region through its diverse functions. The dam's power station contains four 15 MW Francis turbine-generators, contributing to the local energy grid while the reservoir continues to support water supply and recreational activities. The integration of these multiple uses underscores the strategic planning behind the Wuluwati Dam project, maximizing the utility of the Karakash River for the benefit of Hotan County and the broader Xinjiang region. The dam remains operational, continuing to deliver water supply, hydroelectric power, and recreational opportunities to the community.

Comparison with other Xinjiang dams

The Wuluwati Dam represents a significant, albeit modest, component of the hydroelectric infrastructure in Xinjiang, China. Located on the Karakash River in Hotan County, this concrete-face rock-fill dam is characterized by its 138 m height and a reservoir capacity of 347,000,000 m³. Its power station utilizes four 15 MW Francis turbine-ggenerators, yielding a total installed capacity of 60 MW. While substantial for regional water supply and recreation, Wuluwati's scale is distinct when compared to the larger hydroelectric projects that define the Xinjiang energy landscape.

Xinjiang hosts some of China's most massive hydroelectric installations, particularly along the Ili River and the Tarim River basin. Major projects such as the Daban Dam and the Ketuduke Dam feature capacities exceeding 1,000 MW, significantly outscaling Wuluwati's 60 MW output (Global Energy Monitor). These larger dams often employ different structural designs, such as double-curvature arch dams, to leverage the steep topography of the Tian Shan mountains. In contrast, Wuluwati's concrete-face rock-fill design is typical for sites with specific geological conditions in the Hotan region, prioritizing stability and water retention for agricultural and local municipal use alongside power generation.

The operational timeline of Wuluwati also reflects the phased development of Xinjiang's hydro sector. Construction began with river diversion in 1993, with the main dam structure commencing in 1995. The generators came online in late 2000 and early 2001, placing Wuluwati among the early-2000s wave of hydro projects in the autonomous region. This period saw increased investment in renewable energy to support local industrial growth and water management in the arid Tarim Basin. Unlike newer, mega-scale projects commissioned in the 2010s, Wuluwati serves a more localized role, balancing hydroelectric generation with critical water supply functions for Hotan County.

Comparative Data

Dam Name Location Type Capacity (MW) Reservoir Volume (m³)
Wuluwati Dam Hotan County, Xinjiang Concrete-face rock-fill 60 347,000,000
Daban Dam Ili River, Xinjiang Double-curvature arch 1,200 ~1,000,000,000
Ketuduke Dam Ili River, Xinjiang Double-curvature arch 1,200 ~1,000,000,000

The table above illustrates the scale difference between Wuluwati and larger Xinjiang hydro projects. Daban and Ketuduke, both on the Ili River, demonstrate the region's capacity for high-output generation, whereas Wuluwati's 60 MW capacity highlights its role in localized energy and water management (Global Energy Monitor; Wikipedia). This diversity in scale and function underscores the strategic approach to hydroelectric development across Xinjiang's varied geographical zones.

See also