How can water sensitivity transform our cities into sustainable urban spaces? 🧵 Image
What is the challenge for water-sensitive #urban design on a #city scale?

Turning an area spread across 1250 square km, divided into 3 major valleys & a tank system into a water-sustainable space. Image
But increasing urbanisation in the last few decades has been diminishing the city’s #water bodies.
Bengaluru’s all-manmade #tank system was initially developed only to meet irrigation needs. Each tank or #lake overflows to the next, via a channel. When the tank area urbanizes, the essential reason for their construction, i.e source of irrigation, is gone.
So how do you rejuvenate these tanks in a modern context? We now reimagine them within these roles:

- Recreational
- Bio-diversity protection
- Livelihoods- fisheries, grass cutters
- #Flood Protection
- Groundwater Recharge
- Cultural
From the Jakkur Sewage Treatment Plant,
10 million litres of treated water goes to the constructed wetland. The water is thus further polished in the wetland before going to the lake. Image
The treated wastewater now revives a water body in the city while also providing recreation to the urban folks. With treated wastewater filling the lake, Jakkur Lake has a perennial source of water, thus attracting #biodiversity. Image
Lake-dependent livelihoods can be secured

Fishermen & grasscutters act as key stakeholders in ensuring lakes are functioning well. Jakkur lake alone provides a livelihood for 5 fishermen & one contractor. Grass cutters remove the plants from the wetlands & use them as fodder. Image

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More from @biome_trust

Jan 18
Can you effectively manage wastewater in your locality?

Check out these snippets from the comic book “Neera, Jalaj and the Case of Untreated Waste”, that tell us how we can achieve sustainable #wastemanagement ...🧵 Image
10-year-old Jalaj was curious about how efficiently waste can be used.

He kept thinking about the technology that helped #recycle and reuse it. Jalaj wondered how he could replicate the system in his own #environment. Image
First, Jalaj tackled the solid waste by building a toilet with a twin leach pit, with the help of his friends. A twin leach pit is a toilet that can manage faecal waste locally. Image
Read 12 tweets
Jan 16
Here are some ways you can make your layout/apartment/gated community more water sustainable...🧵
Here’s the challenge:

In a layout, how can we convert water from an individual, private resource, to an #equitable resource?
Imagine everybody using multiple straws to procure water from the same glass.

Is there an alternative to everybody sinking a #borewell, competing with each other to draw #water? How can this alternative be #sustainable?
Read 10 tweets
Jan 5
Do you know how much water you use in your school every day?

Here's an easy way to calculate your school's water demand: Image
First, draw a map of your campus showing:

1. Buildings (classrooms, labs, etc.)
2. Paved Surfaces (pathways, courts, etc.)
3. Open Areas (grounds, gardens, etc.) Image
Next, identify these components of the water system in your school. This will also make you aware of:

Where does the water you consume daily at school come from? Where is it stored? How is it used? And where does it go after your use?

Here's an example you can refer to: Image
Read 6 tweets
Jan 3
How can a #school become more water #sustainable? 🧵 Image
In this image, a typical school’s water sources, use and disposal processes are numbered. Image
Asking the right questions to understand the #water context of your school will help make your campus more water sustainable.

Here are some important questions to consider:
Read 8 tweets
Jan 2
Do you know what makes up a #lake system?

Understanding the components of a lake system, its purposes and functions are critical to drawing out an inclusive rejuvenation plan.

Here's a quick run down of a lake's basic components 🧵
1/ Cascade: A series of lakes or man-made tanks that are connected
2/ Catchment: The extent of land where all rainwater and surface water flow into the lake following the natural contours of the land.
Read 15 tweets
Jan 2
What is the story behind the famous #Bangalore weather?

It goes back 3400 million years...🧵
Around 3,400 million years ago, the peninsular ‘gneiss’ came out and was cooled from volcanic activity.

This is what formed the city’s bedrock today. But the rock itself weathered and stored water in shallow aquifers.
Bengaluru as we know it today, settled at the fag end of the Deccan plateau, 900 metres above sea level.

This gave it the #pleasant climate that Bengaluru is famous for.

Let’s now skip to 88 million years ago. >>
Read 9 tweets

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