Photographer In the meantime, the Forest Service’s work at Spirit Lake includes the installation of a structure to keep floating logs away from the tunnel outlet as well as sensors to help monitor flows. Brownmed is a leader in manufacturing products aimed at improving the quality of life for patients, and has been for more than 50 years. Spirit Lake Outflow and Tunnel. Image Dimensions: 3072 x 2048. View of the Spirit Lake outlet tunnel, built in 1985, that allows water to drain out of Spirit Lake safely and maintain the lake's water level 100 ft (30 m) below the estimated overtopping level. All Brownmed products have a solid medical foundation and all new product design starts with patient comfort in mind. About a mile into the tunnel at Spirit Lake the ground has risen about 2 feet. Underneath the $11.8 million manse in Lake Quivira, KS, is a network of scuba diving tunnels carved more than 30 feet deep into the mountain. The Army Corps of Engineers built an outflow tunnel 35 years ago to maintain a safe water level. At issue is how the USFS wants to do that: by building a 3.4-mile-long road through the heart of the Pumice Plain. The Sediment Retention Structure, completed in 1989, keeps hundreds of millions of cubic yards of sediment from rushing down the Toutle River, preventing significant flooding and navigation problems. That hole is the mouth of the Spirit Lake tunnel, built after the eruption to allow the lake to drain to a nearby river. The US Army Corps of Engineers said that's threatening to constrict safe water flow. Details. After nearly four decades in service, however, the tunnel needs to be either upgraded or replaced. View of the Spirit Lake outlet tunnel, built in 1985, that allows water to drain out of Spirit Lake safely and maintain the lake's water level 100 ft (30 m) below the estimated overtopping level. The problem is a large lake two miles north of the mountain: Spirit Lake. The Spirit Lake Tunnel, completed in 1985, helped stabilize the lake’s water levels. About a mile into the tunnel at Spirit Lake the ground has risen about 2 feet. Attribution: Natural Hazards , Volcano Hazards Program Office , Region 9: Columbia-Pacific Northwest , Cascades Volcano Observatory , Mount St. Helens Or, more specifically, the Spirit Lake tunnel, an artificial outlet built out of necessity and completed in 1985. Location Taken: US. The eruption landslide also blocked the flow of water out of Spirit Lake to the Toutle River. Spirit Lake Tunnel Intake Gate Replacement and Geotechnical Drilling Project EA *NEW LISTING* - Special area management - Facility management : In Progress: Comment Period Public Notice 12/17/2019 Expected:06/2020 07/2020: Michelle King 360-891-5021 The Gifford Pinchot National Forest is responsible for operating, maintaining, and repairing the 1.6 mile Spirit Lake tunnel and the engineered channels at Castle and Coldwater Lakes. 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