The diagrams below show how houses can be protected in areas which are prone to flooding. Write a report for a university, lecturer describing the information shown below. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The diagrams illustrate how residential areas are protected from

Use synonyms

flood

Add an article

the flood

a flood

show examples

.

Overall

Linking Words

, there are two ways to safeguard housing

building

Fix the agreement mistake

buildings

show examples

in

flood

Use synonyms

areas, with or without a stopbank. Both solutions consider historical data

while

Linking Words

the former is an extension of the latter. In the first solution, buildings' floor levels are elevated from the ground to the freeboard level which is 300mm from the past

100 year

Add a hyphen

100-year

show examples

flood

Use synonyms

level. As an extended solution, a stopbank

is build

Change the verb form

is built

is building

show examples

near the riverbank from the ground to the freeboard level. Its main objective is to act as a blocker for the

flood

Use synonyms

that is

Linking Words

triggered by the increment in the riverbank, consisting of two main components a berm, and a floodgate. Despite blocking the water coming in from the river, internal rainfall could not flow out too. The

existences

Fix the agreement mistake

existence

show examples

of a berm and a floodgate solve

this

Linking Words

problem partially by releasing the internal outflow into the river ,

Linking Words

however

Add a comma

,however

show examples

there will still be minor internal ponding on the mainland.