Mormon Flat Dam
| Mormon Flat Dam | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 33 ° 33 '12 " N , 111 ° 26' 33" W | |
| country |
 United States
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| place | Maricopa County , Arizona | |
| Waters | Salt River | |
| Height upstream | 506 m | |
| power plant | ||
| owner | Salt River Project (SRP) | |
| operator | SRP | |
| construction time | 1923 to 1926 | |
| Start of operation | 1926 | |
| technology | ||
| Bottleneck performance | 64 megawatts | |
| Average height of fall |
40 m | |
| Turbines | 1 × 10 MW, 1 × 54 MW | |
| Others | ||
The dam Mormon Flat ( english Mormon Flat Dam ) is a dam with hydroelectric plant in Maricopa County , State of Arizona , USA . It dams the Salt River to a reservoir, Canyon Lake . The dam is located approximately 82 km (51 miles ) northeast of Phoenix . The dam Horse Mesa is located 22 km upstream and dam Stewart Mountain about 16 km downstream.
Construction of the dam began in 1923. It was completed in 1925. The dam is primarily used to generate electricity. It is owned and operated by the Salt River Project (SRP) and is also operated by SRP.
Barrier structure
The shut-off is an arch dam of concrete with a height of 68 m (224 ft ) above the foundation bed . The top of the wall is at an altitude of 509 m (1671 ft) above sea level . The length of the top of the wall is 116 m (380 ft). The thickness of the dam is 6 m (20 ft) at the base and 2.4 m (8 ft) at the top. The volume of the structure is 45,797 m³ (59,900 cubic yards ).
The dam wall has a flood relief on the left side of the valley through which a maximum of 4247 m³ / s (150,000 cft / s) can be discharged.
Reservoir
At the normal storage target of 506 m (1660.5 ft), the reservoir extends over an area of around 3.84 km² (950 acres ) and holds 71.36 million m³ (57,852 acre-feet ) of water.
power plant
The power plant is located at the foot of the dam. Construction of the power plant began in 1925. It was completed in 1926. The installed capacity is 64 MW ; it was originally 10 MW. The turbine installed initially has a maximum output of 10 MW. In 1971 an additional pump turbine with an output of 50 MW was installed. The pump turbine was renewed in 2002; an increase in output to 54 MW was carried out. The drop height is 40 m (131.5 ft).
history
The Theodore Roosevelt Dam, completed in 1911, was built to compensate for the uneven flow regime of the Salt River and to create a storage space that would enable orderly irrigation in the lower reaches of the Salt River. The water from the reservoir should only be drained from April 1st to October 1st of each year to be used for irrigation purposes.
Electricity generation at the Roosevelt Dam Power Station was initially just a by-product. However, during World War I, the demand for electricity increased and the managers of the Salt River Valley Water Users' Association (the predecessor organization of the Salt River Project ) saw it as an opportunity to generate additional income by increasing electricity generation. However, this raised concerns among the Association's landowners that the water would now be used to generate electricity instead of irrigation.
This ultimately led to the plan to build further dams on the Salt River below the Roosevelt Dam in order to be able to use the water several times. In the 1920s, the Mormon Flat Dam (1923 to 1925), the Horse Mesa Dam (1924 to 1927) and the Stewart Mountain Dam (1928 to 1930) were built.
The total costs for the construction of the dam and the power plant are given as USD 1.559 million .
See also
Web links
Individual evidence
- ^ A b c d e The Salt River Project, Arizona. (PDF) uair.library.arizona.edu, pp. 1, 6 , accessed on December 3, 2018 (English).
- ↑ a b Mormon Flat Dam. United States Bureau of Reclamation (USBR), accessed December 19, 2018 .
- ↑ a b Mormon Flat Dam. Salt River Project (SRP), accessed December 19, 2018 .
- ^ Sticky Wickets: Modifying Operation of a Pumped Storage Project. www.hydroworld.com, December 5, 2014, accessed December 19, 2018 .
- ^ A b c Arizona: Roosevelt Dam and Powerplant. National Park Service (NPS), accessed December 9, 2018 .
- ^ Water and Electricity: Not always a deadly combination. USBR, accessed December 1, 2018 .
