Tannensee: Alpine Reservoir and Hydroelectric Power Source
An in-depth examination of Tannensee, a vital reservoir in Obwalden, Switzerland, detailing its hydrology, engineering, and role in hydroelectric power generation.
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Understanding Tannensee
Geographical Context
Tannensee is a significant reservoir situated within the canton of Obwalden, Switzerland.[1] As a man-made body of water, it plays a crucial role in the region's water management infrastructure, serving purposes beyond natural lake functions.
Hydrological Significance
The reservoir is primarily fed by the Tannenbach stream, along with contributions from other smaller creeks. Its outflow is also managed via the Tannenbach. The reservoir's operations are intrinsically linked to its defined catchment area of 1.3 km2 (0.50 sq mi), entirely within Switzerland.
Elevation and Scale
Tannensee resides at a substantial surface elevation of 1,976 meters (6,483 feet) above sea level. This high alpine location influences its environmental characteristics. The reservoir covers a surface area of 33 hectares (82 acres) and holds a considerable water volume of 3.8 million cubic meters (3,100 acre⋅ft).
Hydrological Dynamics
Water Sources and Flow Regulation
The primary inflow and outflow for Tannensee is the Tannenbach stream. This indicates a controlled hydrological system where the reservoir acts as a buffer, regulating the natural flow of the Tannenbach. The damming process in 1958 was specifically designed to manage these water resources effectively.
Catchment and Basin Characteristics
The reservoir's hydrological integrity relies on its defined catchment area, which spans 1.3 km2 (0.50 sq mi). This entire area lies within the geographical and political boundaries of Switzerland, ensuring a singular national jurisdiction over its water resources and contributing watershed.
Alpine Environment Influence
Situated at an elevation of 1,976 meters (6,483 feet), Tannensee is subject to typical alpine climatic conditions. This altitude affects water temperature, potential for seasonal ice cover, and the surrounding ecosystem. Such high-elevation reservoirs are critical for managing water resources in mountainous regions, often serving dual purposes.
Engineering and Construction
The Dam Structure
Tannensee was created in 1958 through the strategic damming of the Tannenbach and several smaller creeks. The construction utilized an earth-fill dam, a common and effective method for impounding water bodies, particularly in varied terrain. This engineering feat transformed the natural landscape to serve specific utility functions.
Storage Capacity
The reservoir's design accommodates a significant water volume of 3.8 million cubic meters (approximately 3,100 acre⋅ft). This substantial storage capacity is essential for its primary function, allowing for the regulation of water release over time. The surface area of 33 hectares (82 acres) provides the necessary expanse for this volume.
Purpose of Impoundment
The primary objective behind the construction of the Tannensee dam was to create a reliable water source for hydroelectric power generation. This strategic impoundment ensures a consistent supply of water, crucial for the continuous operation of downstream energy production facilities.
Hydroelectric Power Generation
Reservoir's Role in Energy Production
Reservoirs like Tannensee are fundamental components of hydroelectric power systems. By storing water at a high elevation, they create potential energy. When released, this water flows through turbines, converting its potential and kinetic energy into mechanical energy, which then drives generators to produce electricity.
Kraftwerk Hugschwendi
The electricity generated from Tannensee's water resources is harnessed at the Kraftwerk Hugschwendi power station, located in Kerns. This facility leverages the controlled release of water from the reservoir to ensure a steady and predictable output of electrical power, contributing to the regional energy supply.
Sustainable Energy Contribution
Hydroelectric power is a significant source of renewable energy. Reservoirs like Tannensee, by utilizing the natural water cycle and gravitational potential, provide a clean and sustainable method of electricity generation, reducing reliance on fossil fuels and contributing to environmental sustainability goals.
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Important Disclaimers
AI-Generated Content and Data Accuracy
This document has been generated by an Artificial Intelligence model. The content is derived solely from the provided source text regarding Tannensee and is intended for educational and informational purposes. While efforts have been made to ensure accuracy based on the source, the information may not be exhaustive, entirely up-to-date, or free from minor interpretation nuances inherent in AI processing.
This is not professional advice. The information presented here does not constitute engineering, hydrological, environmental, or any other form of professional consultation. Decisions regarding water management, dam safety, hydroelectric power generation, or environmental impact should always be made in consultation with qualified and licensed professionals who can assess specific site conditions and regulatory requirements.
The creators of this content are not liable for any errors, omissions, or actions taken based on the information provided herein.