Stewart Mountain Dam
| Stewart Mountain Dam | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 33 ° 34 '0 " N , 111 ° 32' 8" W | |
| country |
 United States
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| place | Maricopa County , Arizona | |
| Waters | Salt River | |
| Height upstream | 466 m | |
| power plant | ||
| owner | Salt River Project (SRP) | |
| operator | SRP | |
| construction time | 1928 to 1930 | |
| Start of operation | 1930 | |
| technology | ||
| Bottleneck performance | 13 megawatts | |
| Average height of fall |
35 m | |
| Turbines | 1 × 13 MW | |
| Others | ||
The dam Stewart Mountain ( English Stewart Mountain Dam ) is a dam with hydroelectric power station in Maricopa County , State of Arizona , USA . It dams the Salt River to a reservoir (English Saguaro Lake ). The dam is located approximately 66 km (41 miles ) northeast of Phoenix . The Mormon Flat dam is about 16 km upstream and the Granite Reef dam is about 30 km downstream.
Construction of the dam began in 1928. It was completed in 1930. 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 central shut-off is an arch dam of concrete with a height of 63 m (207 ft ) above the foundation bed , of the spillways is flanked on both sides. The top of the wall is at an altitude of 468 m (1535 ft) above sea level . The length of the top of the wall is 384 m (1260 ft). The thickness of the dam is 10 m (33 ft) at the base and 2.4 m (8 ft) at the top. The volume of the structure is 91,746 m³ (120,000 cubic yards ).
A maximum of 5720 m³ / s (202,000 cft / s) can be discharged via the two flood reliefs, and a maximum of 51 m³ / s (1800 cft / s) via the bottom outlet .
Reservoir
At the normal storage target of 466 m (1529 ft), the reservoir extends over an area of around 5.12 km² (1264 acres ) and holds 86.05 million m³ (69,765 acre-feet ) of water.
power plant
The power plant is located at the foot of the dam on the right. The installed capacity with one turbine is 13 MW . The height of fall is 35 m (116 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.
From 1988 to 1992, the United States Bureau of Reclamation carried out extensive expansion measures. Another flood relief was added on the right side of the dam. The dam wall was reinforced with 84 steel anchors that extend through the dam wall into the underlying rock.
The total cost of building the dam and power station in 1930 is given as USD 2.515 million .
See also
Web links
Individual evidence
- ^ A b c d The Salt River Project, Arizona. (PDF) uair.library.arizona.edu, pp. 4, 7 , accessed on December 19, 2018 (English).
- ↑ a b c Stewart Mountain Dam. United States Bureau of Reclamation (USBR), accessed December 19, 2018 .
- ↑ a b Stewart Mountain Dam. Salt River Project (SRP), 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 .
