Contributions of the group Barrage / Dam

Prague Smíchov Lock (#0824)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Thu, 17 Jan 2019 07:19:50 +0000

Don Barrett (aka DBs travels) has posted:

Smíchov Lock on the Vltava in the center of Prague. Now this is the sort of site that works for me – an illustration of the architecture of public infrastructure from a time in the past when functional could be combined with aesthetically pleasing.

The Smíchov Lock was built in 1911-1922 (I’m assuming completed in 1922) and is now the busiest lock in Prague (out of four), mainly used by tourist boats. Unfortunately I could find no history of the uses of the locks, but searching on the use of the river itself it appears that the Vltava was not used for industrial shipping.

Source: www.viewprague.cz/en/canal-lock-in-smichov

(Part of a documentation of 2018 exploration/reflection on Brexit and populist movements in Europe, keyword Europe2018)

London Teddington Locks (#0412)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sun, 30 Dec 2018 23:16:10 +0000

Don Barrett (aka DBs travels) has posted:

Another important goal on this trip, seeing more of the historic English lock structures. This is the Teddington Locks on the Thames, at the tidal limit of the Thames and thus the lowest of the locks on the Thames. Much more on these locks with later pictures.

Source: en.wikipedia.org/wiki/Teddington_Lock

(Part of a documentation of 2018 exploration/reflection on Brexit and populist movements in Europe, keyword Europe2018)

London Thames Barrier (#0213)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sun, 30 Dec 2018 06:02:45 +0000

Don Barrett (aka DBs travels) has posted:

A key goal for me on this trip, to see the Thames Barrier which is on the east side of London. Opened in 1984 to control storm surges which historically flooded from the North Sea up the Thames to London. There will be much more on this later….

Sources:
en.wikipedia.org/wiki/Thames_Barrier
www.gov.uk/guidance/the-thames-barrier

(Part of a documentation of 2018 exploration/reflection on Brexit and populist movements in Europe, keyword Europe2018)

machland wall

nobody@ipernity.com (Berny) — Thu, 02 Dec 2010 20:51:45 +0000

Berny has posted:

flood protection system in Upper Austria at the river Danube, commune Mitterkirchen (design by Hydroconsult GmbH), pumping station 2.4

Chattahoochee Jim Woodruff Dam and Lock (#0600)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sat, 08 Sep 2018 08:31:27 +0000

Don Barrett (aka DBs travels) has posted:

The Jim Woodruff Dam which impounds the waters of the Chattahoochee and Flint rivers, releasing them into the Apalachicola River at Chattahoochee, Fl. The dam, operated by the Army Corps of Engineers, was completed in 1952; it was built for flood control and hydroelectric generation. It contains one lock to accommodate barge and recreational boat traffic that moves from the Chattahoochee river, down the Apalachicola river, to the Gulf. The dam creates Lake Seminole, which is mainly in Georgia, and the east end of the dam (the center of this picture) is in Georgia.

I recall there being quite a bit of controversy about this dam’s construction that was still debated when I was driving through this area regularly back in the early 70’s. Unfortunately, an Internet search on that controversy did not generate very much information, but suggested multiple issues. What follows is an effort to try to summarize those issues; not being an expert on that system, some of this may be not quite right.

One key issue for the Apalachicola-Chattahoochee-Flint system is that Atlanta is at the headwaters of the Chattahoochee and, as a rapidly growing metropolitan area, it reduces the flow by siphoning off a large volume of water for its citizens. Secondly, there’s a long history of cities along the river (including the metropolitan areas of Atlanta and Columbus, GA) dumping both sewage and toxic waste directly into the river. Both of these two factors influence the health of Apalachicola Bay in Florida.

A third factor is the barge canal. The Chattahoochee and Apalachicola rivers were an important shipping system before and immediately after the Civil War due to extensive water, and then hydroelectric, powered industrial (especially textile) development in the Columbus, GA. area. Though the gains in railroad access around the turn of the 20th century resulted in waterborne shipping on the rivers becoming much less frequent, dams later built on the river were designed for barge traffic. Apparently there continues to be some barge traffic, but it is argued that it is not enough to justify the environmental damage caused by continued dredging to maintain the canal.

Sources:
en.wikipedia.org/wiki/Lake_Seminole
www.janandpat.net/dams/acoe/woodruff.htm
tfaoi.com/aa/6aa/6aa369.htm
en.wikipedia.org/wiki/Chattahoochee_River

(Part of a photo-essay series on personal history and race, with keyword FlaAla0518)

Curecanti Nat Rec Morrow Point Dam (# 0209)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Fri, 22 Sep 2017 08:09:32 +0000

Don Barrett (aka DBs travels) has posted:

The Gunnison below the dam is the Crystal Reservoir; the Crystal Reservoir is the last of the three dam/reservoirs on the Gunnison. The Crystal Dam is not easily accessible, so there is no picture of it.

Further below Crystal Dam and on the east end of Black Canyon of the Gunnison National Park at East Portal is a small diversion dam with a historic tunnel. On the link below is a photo from the East Portal area taken in 2002: www.flickr.com/photos/donbrr/4210132835

Curecanti Nat Rec Blue Mesa Dam (# 0239)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Wed, 20 Sep 2017 07:40:57 +0000

Don Barrett (aka DBs travels) has posted:

Blue Mesa Dam on the Gunnison River, built in 1966,

Enguri dam

nobody@ipernity.com (Berny) — Sun, 27 Aug 2017 07:12:17 +0000

Berny has posted:

The Enguri Dam is a hydroelectric dam on the Enguri River in Georgia. Currently it is the world's second highest concrete arch dam with a height of 271.5 metres. While the reservoir and dam is located in Georgia, the power house is located in Abkhazia, the separatist region of Georgia, a quite difficult situation. To imagine the dimensions, look at it in large, there is a bus and a red car left of the yellow crane at the bottom of the wall.

McNary Dam WA (#0409)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Thu, 15 Jun 2017 07:30:37 +0000

Don Barrett (aka DBs travels) has posted:

McNary Dam, just upriver from Umatilla, OR. Completed with all power units operational in 1957, 7,365 feet long; the navigation lock has a vertical lift of 75 feet.

Source: www.nww.usace.army.mil/Locations/District-Locks-and-Dams/McNary-Lock-and-Dam

McNary Dam WA (#0406)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Thu, 15 Jun 2017 07:30:33 +0000

Don Barrett (aka DBs travels) has posted:

John Day dam avian predation (#0347)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Tue, 13 Jun 2017 06:16:08 +0000

Don Barrett (aka DBs travels) has posted:

If you look in the upper right corner and then look towards the left, you can barely see a grid of very thin wires that are vertical in the picture. These are designed to keep birds away from the seabound smolt departing the outflow on the lower right.

Willamette Falls Dam, Oregon City (#1504)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Thu, 13 Oct 2016 07:23:44 +0000

Don Barrett (aka DBs travels) has posted:

The structures in the lower portion of the picture (lower left quarter) are the site of a power station built in 1889. Across the river, with the reddish pipes coming into the river, is the powerhouse built in 1893 and rebuilt in 1953.

Willamette Falls Dam, Oregon City (#1505)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Thu, 13 Oct 2016 07:23:31 +0000

Don Barrett (aka DBs travels) has posted:

More detail of the falls and the structures around the falls.

Cardiff bay 3 elipses for 3 locks

nobody@ipernity.com (Amelia) — Sun, 21 Aug 2016 09:31:15 +0000

Amelia has posted:

Felice Varini's 'anamorphic illusion' at the Cardiff Bay Barrage. To find out more about it, here is the link:

news.bbc.co.uk/1/hi/in_pictures/6530989.stm

Imperial Dam, Hidden Shores, AZ (# 0818)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sat, 09 Jul 2016 06:10:07 +0000

Don Barrett (aka DBs travels) has posted:

Telephoto view of the California side of Imperial Dam. The dam was built from 1936 to 1938 with funding from the Works Progress Administration (New Deal). The dam directs water to the river, the Gila (Arizona) Canal, and the All American Canal; the latter directs water to the Yuma Canal and to Imperial County. The controlling of the river at this point involves a complex desilting process; see the link below for the history of the dam and the description of the desilting: www.iid.com/water/water-transportation-system/colorado-river-facilities/imperial-dam

Imperial Dam, Hidden Shores, AZ (# 0807)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sat, 09 Jul 2016 06:10:00 +0000

Don Barrett (aka DBs travels) has posted:

Imperial Dam photographed from Hidden Shores, Arizona. My first visit to Imperial Dam was in 2007 at a time when it was possible to visit the facilities on the western shore, in California. Unfortunately, the California side is no longer accessible to the general public. Pictures from that 2007 trip are at: Imperial Dam 2748a

Laguna Dam - built in 1905 (#0806)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Sat, 09 Jul 2016 06:09:48 +0000

Don Barrett (aka DBs travels) has posted:

The Laguna Diversion Dam, completed in 1905 for irrigation of Yuma Valley and Imperial County. This was the first dam built on the Colorado. Prior to building the dam, steamboats traveled up the Colorado from the Gulf of California through Mexico and up as far as Black Canyon, which is the site of Hoover Dam. The completion of Laguna Dam ended steamboat access and co-occurred with increased rail access. The dam was superceded by Imperial Dam (adjacent pictures) which was finished in 1938. Note that the Colorado River siphon in Yuma (earlier pictures) was originally built to accommodate water from the Laguna Dam. Wikipedia on Laguna Dam: en.wikipedia.org/wiki/Laguna_Diversion_Dam

Yuma Quartermaster Depot - Siphon exhibit (#0910)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Mon, 04 Jul 2016 08:33:46 +0000

Don Barrett (aka DBs travels) has posted:

I had not heard of the siphon and was surprised by the technology used at the time (1912) -- and still working. This photo is of a display about the tunnel (siphon) under the Colorado River. Illustrating the size of the siphon tunnel, note that in the picture of the tunnel there is a man standing on the side of tunnel at a point that appears to be about halfway through it.

Yuma Quartermaster Depot - Siphon exhibit (#0903)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Mon, 04 Jul 2016 08:33:36 +0000

Don Barrett (aka DBs travels) has posted:

In 1909 Laguna Dam was built upstream of Yuma and extensive canals were built to deliver irrigation (and drinking) water. A major obstacle, however, for getting water from those canals to the agricultural Yuma valley was that water diverted from the dam had to cross the Colorado. A siphon was built to take water from the canal on the California side of the river, carry it under the river, and deliver it to the canals on the Arizona (Yuma) side of the river.

This diagram shows the depth and length of the siphon; the siphon was completed in 1912 (see subsequent pictures). Resources describing the siphon include a somewhat too dramatic video ( www.usbr.gov/lc/yuma/facilities/siphon/video ) and ( www.usbr.gov/projects/Project.jsp?proj_Name=Yuma%20Project )

Hetch Hetchy O'Shaugnessy Dam (#0640)

nobody@ipernity.com (Don Barrett (aka DBs travels)) — Tue, 07 Jun 2016 07:17:56 +0000

Don Barrett (aka DBs travels) has posted:

Plaque for the additional height completed in 1938 adding 86' in height and increasing reservoir by about 400 acres. The increase in capacity was built with New Deal funds.