Advantages of dams:
One advantage is that it acts as a stable water source (which can be used to generate electricity or provide water for people). However, a disadvantage to this is that the production of dams generates large carbon dioxide emissions from the cement laying, and any migratory patterns of fish will be disrupted (such as the breeding cycle for salmon).
the turbines are designed to operate at a higher head (pressure), you also don't generate as much energy so you need more dams with more transmission lines
Construction of a major dam on the Colorado River.
The construction of the Colebrook River Dam began in May 1965. Construction on the dam was finished in June 1969. It cost a total of $14.3 million dollars to complete.
Medha patekar
by building a massive dam.
Lake Mead is formed by the dam; until the dam was finished, there was no Lake Mead to hold back. The river was diverted during the construction.
Dams harm ecosystems surrounding the river.
They don't want it
LOWER SIANG DAM at Pashighat(Under Construction by Jaypee)
LOWER SIANG DAM at Pashighat(Under Construction by Jaypee)
Construction on the Itaipu Dam began in January 1970 and the dam officially opened on May 5, 1984. The Itaipu Dam is a hydroelectric dam located on the Parana River on the border between Brazil and Paraguay.
When a dam is to be built, a diversion tunnel is usually bored through solid rock next to the dam site to bypass the dam construction site. The dam is built while the river flows through the diversion tunnel.
on which river tehari dam