Area in 1980 and after the Construction of a Hydroelectric Dam (1990)

IELTS Academic Writing Task 1 - Diagram
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IELTS Writing Task 1 Question

The picture below shows a place in 1980 and after the construction of a hydroelectric dam in 1990.

Common questions for the layout of the hydroelectric dam

1.  Graph Type: Diagram

2.  Title: Area in 1980 and after the Construction of a Hydroelectric Dam (1990)

3.  What are the units of measurement?: No specific units; the diagram shows changes in land use and features.

4. Who: This layout compares the area before and after the dam’s construction.

5.  When: The diagram compares the situation in 1980 and 1990.

6.  Where: The location is unspecified but involves a river surrounded by mountains.

7.  Topic: The impact of a hydroelectric dam on the environment and infrastructure.

 

Process Showing and Trends

  Land Use Before and After the Dam Construction

  • In 1980, the area was characterized by a river, a forest to the left, structures near the river, and irrigated land on the right side, which was near a village. In 1990, the land underwent significant transformation, with the forest and structures removed. The irrigated land was replaced by a hotel, and the village moved southeast.

 

  River and New Infrastructure

  • The construction of the hydroelectric dam in 1990 enlarged the river, and new infrastructure like electrical towers was built near the dam. The area became more modern with the introduction of a hotel and the addition of fishing opportunities, but the change also led to the loss of some biodiversity.

Sample Answer

The diagram compares the layout of a region in 1980 and after the construction of a hydroelectric dam in 1990.

In 1980, a river flowed from north to south through a mountainous region. On the left bank of the river, there was a forest and some architectural structures, while rare plants and animals were located near the structures. On the right bank, large irrigated land was situated next to a village.

By 1990, the area had undergone significant changes. The forest was cleared, and the structures were removed. The irrigated land was replaced by a hotel, and the village was relocated to the southeast. A hydroelectric dam was built in the southern part of the river, which enlarged the river, allowing for fishing activities. Electrical towers were constructed south of the dam.

Overall, the area became more modern and functional for people, but the construction of the dam resulted in the loss of some natural biodiversity.

Top 25 Vocabularies

 

Vocabulary  Meaning Synonyms Examples Type

Radically

In a significant or dramatic way

Drastically, significantly

“The area changed radically after the dam was built.”

Adverb

Irrigated

Land supplied with water for farming

Watered, cultivated

“The large irrigated land was replaced by a hotel.”

Adjective

Enlarged (verb)

Made bigger or expanded

Expanded, increased

“The river was enlarged after the dam was constructed.”

Verb

Biodiversity (noun)

The variety of plant and animal life

Ecosystem diversity, biological variety

“Some biodiversity had to be sacrificed for the dam.”

Noun

Functional (adjective)

Designed to be useful and practical

Practical, efficient

“The area became more modern and functional for people.”

Adjective

Alteration

A change or modification in something

Change, modification

“The area underwent significant alteration after 1990.”

Noun

Relocate

To move to a new place or position

Move, transfer

“The village was relocated to the southeast after the dam.”

Verb

Inundate

To flood or cover with water

Flood, overwhelm

“The construction of the dam caused the area to become inundated.”

Verb

Replaced

To substitute one thing for another

Substituted, exchanged

“The hotel replaced the irrigated land in 1990.”

Verb

Development

The process of improving or expanding something

Progress, expansion

“The development of the hydroelectric dam brought many changes.”

Noun

Facilitate

To make something easier or more efficient

Ease, assist

“The dam facilitates fishing activities in the enlarged river.”

Verb

Ecosystem

A biological community of interacting organisms and their environment

Habitat, environment

“The ecosystem was impacted by the construction of the dam.”

Noun

Displaced

Forced to move or relocated from one’s original position

Removed, relocated

“The structures were displaced to make way for the dam.”

Adjective

Erosion

The gradual destruction of something, often by natural forces

Wear, decay

“The erosion of the riverbanks was controlled by the dam.”

Noun

Restructured

To organize or arrange something in a new way

Reorganized, redesigned

“The region was restructured after the construction of the dam.”

Verb

Absence

The state of not being present or not existing

Lack, nonexistence

“The forest’s absence marked the significant change in 1990.”

Noun

Altered

Changed or modified in appearance or structure

Modified, adjusted

“The landscape was altered drastically by the dam.”

Adjective

Artificial

Made or produced by human beings rather than occurring naturally

Synthetic, man-made

“The lake created by the dam is an artificial body of water.”

Adjective

Transform

To change something completely in form or appearance

Convert, change

“The area was transformed into a more modern and functional space.”

Verb

Diversified

To vary or make more diverse in form or nature

Varied, expanded

“The region’s activities diversified with the construction of the dam.”

Verb

Innovative

Featuring new methods or ideas

Creative, groundbreaking

“The dam introduced an innovative way to harness water for energy.”

Adjective

Compensate

To make up for something lost or damaged

Make amends, offset

“The hotel helped compensate for the loss of land.”

Verb

Expansion

The action of becoming larger or more extensive

Growth, increase

“The dam contributed to the expansion of the river.”

Noun

Preserve

To maintain or keep something in its original state

Conserve, protect

“The biodiversity of the region was partially preserved despite the construction.”

Verb

Sustain

To keep something going or maintain it over time

Maintain, uphold

“Efforts were made to sustain the local wildlife despite the changes.”

Verb
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