How Tall Is Jackson Lake Dam? Water Level Answers

Located in northwestern Wyoming, Jackson Lake Dam is a significant component of the Minidoka Project, a multipurpose water management system operated by the United States Bureau of Reclamation. The dam's primary function is to regulate the flow of water from Jackson Lake, providing irrigation water for agricultural lands in Idaho, as well as generating hydroelectric power. One of the key aspects of the dam's operation is its ability to manage water levels, which is crucial for both irrigation and power generation. The height of Jackson Lake Dam is approximately 70 feet (21 meters) above the foundation, with a total height of 86 feet (26 meters) above the stream bed.

Water Level Management at Jackson Lake Dam

The water level at Jackson Lake Dam is carefully managed to ensure that the reservoir can store and release water as needed for irrigation and hydroelectric power generation. The reservoir has a maximum storage capacity of approximately 848,000 acre-feet of water, with a maximum water surface elevation of 6,772 feet (2,065 meters) above sea level. The minimum operating level is around 6,700 feet (2,042 meters) above sea level, with a dead storage capacity of about 190,000 acre-feet. The dam’s operators use a combination of gates, valves, and other control structures to regulate the flow of water and maintain the desired water level.

Factors Affecting Water Levels at Jackson Lake Dam

Several factors can affect the water level at Jackson Lake Dam, including precipitation, evaporation, and inflow from surrounding watersheds. During periods of heavy precipitation, the water level in the reservoir may rise, while prolonged droughts can cause the water level to drop. Evaporation also plays a significant role, particularly during the summer months when water temperatures are higher. In addition, the inflow of water from surrounding watersheds, such as the Snake River, can impact the water level in the reservoir. The dam’s operators must carefully balance these factors to maintain the optimal water level for irrigation and power generation.

Hydroelectric Power Generation at Jackson Lake Dam

The hydroelectric power plant at Jackson Lake Dam has a generating capacity of approximately 38 megawatts, with an average annual energy production of around 150 million kilowatt-hours. The power plant uses a combination of turbines and generators to convert the energy of the water into electricity. The plant’s generating units are equipped with Francis turbines, which are well-suited for medium-head hydroelectric applications. The power generated at Jackson Lake Dam is transmitted to the regional power grid, where it is distributed to meet the energy needs of local communities and industries.

Performance Analysis of Jackson Lake Dam

The performance of Jackson Lake Dam is evaluated based on a variety of metrics, including its ability to regulate water levels, generate hydroelectric power, and provide irrigation water. The dam’s operators use a range of performance indicators, such as water level control, power generation, and irrigation delivery, to assess the dam’s overall performance. In addition, the dam’s structural integrity is regularly inspected and maintained to ensure that it continues to operate safely and efficiently. The results of these performance evaluations are used to identify areas for improvement and optimize the dam’s operation.