Flood waters that reached Rapid City above Canyon Lake Dam between 9:30 and 10:00 p.m. on June 9 carried large amounts of debris that clogged the spillway of Canyon Lake Dam. Emergency shelter for sick homeless unveiled at the Civic Center Pactola Lake is the largest reservoir in the Black Hills of South Dakota, United States; it was created by the construction of the Pactola Dam. At times nearly 200 men worked on the dam. Although Pactola Reservoir was effective in storing runoff that originated upstream of Pactola Dam, the heaviest rainfall occurred downstream of the dam. Pactola Dam is an embankment dam on Rapid Creek in Pennington County, South Dakota. Unskilled workers earned $1.25 an hour and skilled workers $2.75 an hour. Pactola Dam is an embankment dam on Rapid Creek in Pennington County, South Dakota, about 10 miles (16 km) west of Rapid City.The dam was completed in 1956 by the U.S. Bureau of Reclamation to provide flood control, water supply and recreation. The water level is 7 feet above the full capacity. Most of the flow that passed through Rapid City via Rapid Creek originated in the 51-square-mile drainage area between Pactola Dam and Canyon Lake. 9 likes. The town of Pactola became Pactola Reservoir. Water out of Pactola Dam is currently flowing at 500 cubic feet per second. Hiding underneath the water is what remains of the town. Most of the flow that passed through Rapid City via Rapid Creek originated in the 51 square mile drainage between Pactola Dam and Canyon Lake. Crockett says there's a reason they continued to release more water despite the flooding. There is a small fold in the right abutment that modifies the strike of the beds and causes the axis of the dam to cross some beds twice. The Pactola Pines Marina building and parking lot is flooded next to boat docks Thursday afternoon at Pactola Reservoir.

Pactola Dam, Rapid City, South Dakota. This is the Pactola Dam, constructed from 1952-1956 as part of the Flood Control Act of 1944. Pactola Dam & Reservoir.

Here is information about flood safety. On the evening of June 9, 1972, heavy thunderstorms caused devastating flash flooding throughout Rapid City and the eastern foothills of the Black Hills—destroying homes, vehicles, businesses, and bridges, and claiming 238 lives. The Pactola Dam was constructed from 1952 to 1956 to control flood conditions and provide water to Rapid City. Buildings were auctioned off and moved while others were simply abandoned. The Bureau of Reclamation clear cut and cleaned the lake bottom before it filled. The reservoir created actually supplies much of the water for Rapid City, and of course is used for controlling flooding conditions. Contrary to popular belief there is no town at the bottom of Pactola Lake. Along with the nearby Deerfield Dam, it is part of the Rapid Valley Unit of the Pick-Sloan Missouri Basin Program. A federal program demanded after the flood that Pactola Dam be raised well beyond any water height ever fathomed in the region. Flood Control, Irrigation & Recreation. It was started on 25 November 1952. Crockett says Pactola's very full now, and it's doing its job both as a flood control dam and a reservoir for storing water. Construction of Pactola Dam began in 1952 and was completed in 1956. Rocks at the dam consist of a complex series of schists, slates and amphibolites lying in nearly vertical beds which strike in a northwest direction. Most of the flow that passed through Rapid City via Rapid Creek originated in the 51-square … Most of the flow that passed through Rapid City via Rapid Creek originated in the 51 square mile drainage between Pactola Dam and Canyon Lake. Crockett says Pactola's very full now, and it's doing its job both as a flood control dam and a reservoir for storing water. Although Pactola Reservoir was effective in storing runoff that originated upstream of Pactola Dam, the heaviest rainfall occurred downstream of the dam.