The phrase "a dam at a" is not correct and does not convey a complete thought in written English.
It may be used in a context where you are discussing a specific dam located at a particular place, but it requires additional information to be meaningful.
Example: "We visited a dam at a scenic location in the mountains."
Alternatives: "a dam located at" or "a dam situated at".
A dam at a waste pond burst releasing 4.5m cubic metres of toxic slurry into virtually untouched forest, affecting an area mostly populated by First Nation peoples.
The branch of the calculus concerned with calculating integrals is the integral calculus, and among its many applications are finding work done by physical systems and calculating pressure behind a dam at a given depth.
A dam at a waste pond on the site of a British Columbia open-pit mine had burst, releasing 10m cubic meters of water and 4.5m cubic meters of potentially toxic slurry into virtually untouched forest, lakes and rivers into an area of Canada populated mostly by the indigenous First Nations peoples.
A huge brown plume of mud and mining waste spread out along the coast of the Brazilian state of Espírito Santo on Monday, a little over two weeks after the collapse of a dam at an iron ore mine.
A dam at Wilder, Vermont, has a reservoir 46 miles (74 km) long.
The latter has a dam at Hospet, completed in 1957, forming a reservoir and supplying hydroelectric power.
Corruption, money running out, poor maintenance and wars have put paid to many schemes, including an earlier attempt to build a dam at Inga.
But for the most part, the river is gentle flat water that meanders past the Percy Peaks of New Hampshire and Bear Mountain of Vermont, with sandy beaches and bare-bones campsites along the way, until it reaches a dam at Guildhall, a classic Vermont town.
In 1879 he proposed a "practical" plan for building a canal, calling for a dam at Gatún and another at Miraflores (or as close to the seas as the land would permit), letting the waters rise to form two lakes about 80 feet (25 metres) high, joining the lakes by cutting across the Continental Divide, and connecting them to the oceans through locks.
It flows to the northeast across the Mandingue Plateau, its course interrupted by falls and a dam at Sotuba.
Its level is raised by water diversion from the Whetstone River and regulated by a dam at its outlet near Ortonville.
