Water scarcity - Innovation to combat drought | DW Documentary

Summary: Water Scarcity and Urban Resilience in a Changing Climate

This DW Documentary explores the critical challenges of water management exacerbated by climate change, focusing on the city of Hamburg, Germany. The video highlights the dual threats of extreme rainfall leading to urban flooding and periods of heat and drought, and showcases innovative approaches to enhance the city’s resilience and optimize water resource utilization.

The Challenge of Extreme Rainfall and Urban Flooding

Hamburg’s historical sewer system, some parts over 180 years old, is struggling to cope with increasingly extreme rainfall events. Public works supervisor Durk Grunut explains that even newly built systems are not designed for such downpours, leading to significant overflows and flooded streets. The prevalence of asphalt and concrete surfaces prevents rainwater from naturally seeping into the ground, intensifying the problem.

Addressing Heat and Drought Threats

Beyond excessive rain, Hamburg also faces the growing threat of heat and drought. The documentary introduces hydrologist Andreas Khenbecka, whose mission is to make the city more resilient to both weather extremes. His philosophy is that effective protection requires accurate data: “We can only protect ourselves from dangers if we know how great they’ll be. If we don’t measure, it’s all just guesswork.”

Data-Driven Resilience: Hamburg’s Weather Stations

To combat guesswork, Khenbecka has established a network of 30 weather stations across Hamburg. These stations, equipped with precipitation gauges, provide real-time data on rainfall. This data is crucial for understanding current conditions, predicting future challenges, and developing informed strategies for water management and urban planning to build a more resilient city.

Future-Proofing Water Management

The documentary underscores the necessity for innovative solutions and data-driven strategies to manage water resources effectively in an era of unpredictable climate patterns, ensuring cities like Hamburg can adapt and thrive.

Vocabulary Table

Term	Pronunciation	Definition	Used in sentence
climate change	/ˈklaɪmɪt tʃeɪndʒ/	A long-term change in the average weather patterns that have come to define Earth’s local, regional and global climates.	Climate change is making it clear what a precious treasure we have in water.
precious treasure	/ˈprɛʃəs ˈtrɛʒər/	Something highly valued or cherished.	Water is a precious treasure.
ground water	/ˈɡraʊndˌwɔːtər/	Water held underground in the soil or in pores and crevices in rock.	We simply want to use the ground water we have.
efficiently	/ɪˈfɪʃəntli/	In an efficient manner; with the least waste of time and effort.	Use good, safe water, as efficiently as we can.
threat	/θrɛt/	A statement of an intention to inflict pain, injury, damage, or other hostile action on someone in retribution for something done or not done.	Too much water can become a threat, too.
weather extremes	/ˈwɛðər ɪkˈstriːmz/	Severe or unusual weather conditions.	Managing weather extremes while protecting our planet’s vital water resources.
water resources	/ˈwɔːtər rɪˈsɔːrsɪz/	Supplies of water that are, or may be, available for human use.	Protecting our planet’s vital water resources.
sewer system	/ˈsuːər ˈsɪstəm/	An underground network of pipes for carrying away sewage and rainwater.	Construction on Hamburg’s sewer system began over 180 years ago.
masonry	/ˈmeɪsənri/	Building work done with stone or brick.	The old masonry is still in place.
overflow	/ˈoʊvərˌfloʊ/	To flow over the brim of a receptacle or enclosure.	We tried to avoid overflow.
scale up	/skeɪl ʌp/	Increase in size or extent.	You simply can’t scale up a sewer network.
drain	/dreɪn/	Cause the water or other liquid in (something) to run out, leaving it empty or dry.	Water from the streets can no longer drain through the gutters.
flooded streets	/ˈflʌdɪd striːts/	Roads covered with water, typically due to heavy rain.	Leading to flooded streets.
seep	/siːp/	(Of a liquid) flow or leak slowly through porous material or small holes.	Rainwater can’t seep into the ground.
resilient	/rɪˈzɪliənt/	(Of a person or animal) able to withstand or recover quickly from difficult conditions.	Andreas Khenbecka wants to make Hamburg more resilient.

Vocabulary Flashcards

Lexical Focus: Collocations & Chunks

Don’t just learn isolated words—learn chunks of language. These patterns will help you speak more naturally.

precious treasure
Adjective + Noun Collocation
Climate change is making it clear what a precious treasure we have in water.
ground water
Noun + Noun Collocation
We simply want to use the ground water we have.
weather extremes
Noun Collocation
Managing weather extremes while protecting our planet’s vital water resources.
vital water resources
Adjective + Noun Collocation
Protecting our planet’s vital water resources.
sewer system
Noun Collocation
Construction on Hamburg’s sewer system began over 180 years ago.
public works supervisor
Noun Phrase
Public works supervisor Durk Grunut inspects it regularly.
greater concern
Adjective + Noun Collocation
What’s of greater concern for the man responsible for their maintenance.
extreme weather
Adjective + Noun Collocation
Increasingly extreme weather.
flooded streets
Adjective + Noun Collocation
Leading to flooded streets.
precipitation gauge
Noun Collocation
This precipitation gauge shows how much rain has fallen.

De-Chunking: Complete the Expressions

Select the correct phrase from the box below to complete the sentences.

sewer system
flooded streets
extreme weather
precious treasure
vital water resources

1. Climate change is making it clear what a we have in water.

2. We face a great two-part challenge. Managing weather extremes while protecting our planet’s .

3. Construction on Hamburg’s began over 180 years ago.

4. What’s of greater concern for the man responsible for their maintenance, increasingly .

5. When the sewer system fills up, water from the streets can no longer drain through the gutters, leading to .

While-viewing Tasks

Complete these tasks while watching the video:

Guided Notes

Fill in the key information as you watch:

Primary challenge related to water management discussed:
Age of some parts of Hamburg’s sewer system:
Public works supervisor’s name:
Two main problems facing cities like Hamburg due to weather:
Hydrologist’s name:
Number of weather stations set up in Hamburg:

Questions to Answer

What prevents rainwater from seeping into the ground in Hamburg, leading to flooded streets?
What is the hydrologist’s core philosophy regarding protection from dangers?
How does a precipitation gauge function, as explained in the video?

Checklist

Understand the “two-part challenge” mentioned in the video.
Note why current sewer systems are inadequate for modern rainfall.
Identify how real-time data from weather stations is used.

Embedded Video:

Fill in the Blanks Exercise

1. Climate change is making it clear what a treasure we have in water.

2. We simply want to use the ground water we have, good, safe water, as as we can.

3. Yet, too much water can become a , too.

4. We face a great two-part challenge. Managing weather while protecting our planet’s vital water resources.

5. Construction on Hamburg’s system began over 180 years ago.

6. The old is still in place.

7. Public works supervisor Durk Grunut inspects it .

8. What’s of greater concern for the man responsible for their maintenance, increasingly weather.

9. We tried to avoid and aim to use all storage resources to their fullest.

10. But you simply can’t up a sewer network to handle the kind of rainfall we’re seeing nowadays.

11. Water from the streets can no longer through the gutters, leading to flooded streets.

12. Since so many surfaces in the city have been covered by asphelt and concrete, rainwater can’t into the ground.

13. Heat and can also pose a threat.

14. Hydraologist Andreas Khenbecka wants to make Hamburg more for both weather and water.

15. That’s why Khan Becka has set up 30 weather to send him data from across the city.

Extension Activities

Choose from these activities to extend your learning:

Research Project: Urban Water Management

Research how another major city (e.g., Amsterdam, Tokyo) manages its water resources, particularly in response to climate change. Compare its strategies with those discussed for Hamburg.

Difficulty:
Medium

Reflective Journal: Personal Water Footprint

Keep a journal for a day or week, noting your personal water consumption. Reflect on ways you could reduce your water footprint and contribute to water conservation efforts.

Difficulty:
Easy

Design a Rainwater Harvesting System

With a partner, design a simple rainwater harvesting system for a typical urban household or building. Consider materials, storage, and potential uses for the collected water.

Difficulty:
Hard

Discuss Local Water Issues

In pairs, discuss any water-related challenges or initiatives in your local area. How do they compare to the issues faced by Hamburg?