Ad
Search by Term. Or Use the code. Met a coordinator today? Confirm the Identity by badge# number here, look for BallotboxIndia Verified Badge tag on profile.
सर्च करें या कोड का इस्तेमाल करें, क्या आज बैलटबॉक्सइंडिया कोऑर्डिनेटर से मिले? पहचान के लिए बैज नंबर डालें और BallotboxIndia Verified Badge का निशान देखें.
 Search
 Code
Searching...loading

Search Results, page {{ header.searchresult.page }} of (About {{ header.searchresult.count }} Results) Remove Filter - {{ header.searchentitytype }}

Oops! Lost, aren't we?

We can not find what you are looking for. Please check below recommendations. or Go to Home

Stormwater management in India- Why, How and What can be done.

  • Stormwater management in India- Why, How and What can be done.
  • {{agprofilemodel.currag.ag_started | date:'mediumDate'}}
Ad
Ad
Seen this...

Seen this...

or this...

Seen this...


We bet you have seen worse. 

Do you know who is the reason behind it. A work of art like below (left, right is the correct one!), along with various other flaws in urban planning and stormwater management in India as detailed in the main article.

Seen this...


Now to the Main article.

The frequent urban flooding due to flawed and non-existent stormwater management in our cities during the monsoon highlights our perpetual inability to recognize the rainwater as a precious resource. It’s a great irony that on one hand our cities are complaining of rapidly depleting water table and on the other, we are letting the rainwater get washed away into drains and sewers. In turn, also adding increased pressure over the drainage/sewerage network. 

Historically the cities have always had natural stormwater outlets culminating into either local watersheds, rivulets or rivers. Water tends to find its way naturally towards the lower points of the topography. Not too back in history the Baolis and stepped wells were common feature of cities designed to redirect storm water into the Ground water. 

However callous human intervention has taken it all away. The traditional system has taken a backseat due to unplanned development. Lakes and ponds no more exist in cities. In the beginning of 1960, Bengaluru had 262 lakes. Now, only 10 of them hold water. In 2001, when the collector of Ahmedabad listed the waterbodies in the city following a high court order, he found that 65 of the 137 listed lakes were encroached. 

Cities are also replacing the permeable land with impervious surfaces. The problem gets aggravated by the fact that drains do not have sufficient slope to draw water from surface water and channelise it. 

By the 1860s, Bengaluru had evolved an intricate system of harvesting rainwater. Laid out in 1866 by then commissioner of the city, Lewing Bentham Bowring, these drains carried rainwater to outlying tanks. But modern Bengalru discounted this security and is now grappling with severe water shortage. So is Chennai, which has traditionally depended on temple tanks, or kulams, for harvesting rain. There are 39 kulams in Chennai, each spanning 0.4-2.8 hectares (ha). The kulams also act as flood-control devices. 

Lately, the natural course of storm-water drains, leading to these kulams, has been changed due to unplanned settlement near the catchment areas. The drains now flow directly to the sea without filling the tanks. Storm-water channels also formed an integral part of the forts and palaces of desert cities of Rajasthan.  Jaigarh fort in Jaipur is a classic example of this. The fort has three underground sumps, which stored runoff rainwater drained from the Aravallis through well-designed channels. The fort still uses the stored rainwater during peak water scarcity periods in summer.
Urban flooding is absolutely preventable. All that we need to do is to let Stormwater find its right of way. 

Stormwater management has two aspects-Qualitative and Quantitative. The learned Engineers in our municipal corporations are already taking care of the quantitative aspect.

Just to reiterate following is the way to go-



Seen this...


  • Keep surface imperviousness under 50%, check Surface run off.
  • Promote Green roof over buildings. 
  • Rainwater harvesting on individual plots is already mandatory in many cities. Its build quality and maintenance is of paramount importance. The municipal bodies need to urgently chalk out a methodology for Quality check. Develop stringent building codes. 
  • Permeable pavements, grass channels etc are some of the doable things that can be adopted at the community level.
  • The urban dense pockets must have a silt free storm water drainage system that is finally connected to some watershed. (A case in the point is that of the city of Gurgaon where the connection of city level storm water drainage network to Najafgarh drain is yet to happen and currently the Badshahpur jheel is the only watershed available to the city. Hugely insufficient this causes massive urban flooding in the old Gurgaon areas and Palam Vihar, every year. This 140 Crore project to connect city level network to Najafgarh drain was sanctioned only in 2014 by the Government. Another project taken by HUDA in 2013, to build 46 KM long box type drain connecting Badshahpur jheel to NH-8 found mixed responses.)
  • It is always better not to build very long drains, instead have local catchment areas in the form of lakes or ponds, however utmost care is needed in maintenance of these water bodies lest they become infested with dirt & silt. 

On the Qualitative aspect – 




Storm-water is a major source of pollution for all types of water bodies. Soil compaction caused by site grading and the expanse of impervious surfaces such as roads & parking lots, produce runoff that contains sediment & other contaminants, including atmospheric deposition, pesticides, fertilizers, vehicle fluid leaks and mechanical waste. Increased storm-water runoff can overload pipes and sewers damaging water quality. The idea behind Storm-water management practices is to ensure removal of about 80% of the average annual post development total suspended solids load based on existing monitoring reports. 

Following are some management practices for removal of TSS (Total Suspended solids) from storm-water runoff- 

  • Infiltration Basin
  • Infiltration Trench 
  • Vegetated Filter Strip
  • Grass Swell
  • Porous pavement 
  • Open Grid pavement 
  • Sand filter Infiltration Basin 
  • Water quality inlet with sand filter
  • Oil/ Grit separator
  • Extended detention dry pond 
  • Wet pond
  • Constructed storm-water wetlands Each of above are capable of removing 60-90% of TSS depending on build quality, and are known as Best Management Practices in Storm-water quality control. 

Thanks
Ballot box India Team
Read in {{ agprofilemodel.altlanguage }}
Leave a comment.
Subscribe to this research.
रिसर्च को सब्सक्राइब करें

Join us on the latest researches that matter.

इस रिसर्च पर अपडेट पाने के लिए और इससे जुड़ने के लिए अपना ईमेल आईडी नीचे भरें.

Responses

{{ survey.name }}@{{ survey.senton }}
{{ survey.message }}
Reply

How It Works

ये कैसे कार्य करता है ?

start a research
Connect & Follow.

With more and more connecting, the research starts attracting best of the coordinators and experts.

start a research
Build a Team

Coordinators build a team with experts to pick up the execution. Start building a plan.

start a research
Fix the issue.

The team works transparently and systematically fixing the issue, building the leaders of tomorrow.

start a research
जुड़ें और फॉलो करें

ज्यादा से ज्यादा जुड़े लोग, प्रतिभाशाली समन्वयकों एवं विशेषज्ञों को आकर्षित करेंगे , इस मुद्दे को एक पकड़ मिलेगी और तेज़ी से आगे बढ़ने में मदद ।

start a research
संगठित हों

हमारे समन्वयक अपने साथ विशेषज्ञों को ले कर एक कार्य समूह का गठन करेंगे, और एक योज़नाबद्ध तरीके से काम करना सुरु करेंगे

start a research
समाधान पायें

कार्य समूह पारदर्शिता एवं कुशलता के साथ समाधान की ओर क़दम बढ़ाएगा, साथ में ही समाज में से ही कुछ भविष्य के अधिनायकों को उभरने में सहायता करेगा।

How can you make a difference?

Do you care about this issue? Do You think a concrete action should be taken?Then Connect With and Support this Research Action Group.Following will not only keep you updated on the latest, help voicing your opinions, and inspire our Coordinators & Experts. But will get you priority on our study tours, events, seminars, panels, courses and a lot more on the subject and beyond.

आप कैसे एक बेहतर समाज के निर्माण में अपना योगदान दे सकते हैं ?

क्या आप इस या इसी जैसे दूसरे मुद्दे से जुड़े हुए हैं, या प्रभावित हैं? क्या आपको लगता है इसपर कुछ कारगर कदम उठाने चाहिए ?तो नीचे कनेक्ट का बटन दबा कर समर्थन व्यक्त करें।इससे हम आपको समय पर अपडेट कर पाएंगे, और आपके विचार जान पाएंगे। ज्यादा से ज्यादा लोगों द्वारा फॉलो होने पर इस मुद्दे पर कार्यरत विशेषज्ञों एवं समन्वयकों का ना सिर्फ़ मनोबल बढ़ेगा, बल्कि हम आपको, अपने समय समय पर होने वाले शोध यात्राएं, सर्वे, सेमिनार्स, कार्यक्रम, तथा विषय एक्सपर्ट्स कोर्स इत्यादि में सम्मिलित कर पाएंगे।
Communities and Nations where citizens spend time exploring and nurturing their culture, processes, civil liberties and responsibilities. Have a well-researched voice on issues of systemic importance, are the one which flourish to become beacon of light for the world.
समाज एवं राष्ट्र, जहाँ लोग कुछ समय अपनी संस्कृति, सभ्यता, अधिकारों और जिम्मेदारियों को समझने एवं सँवारने में लगाते हैं। एक सोची समझी, जानी बूझी आवाज़ और समझ रखते हैं। वही देश संसार में विशिष्टता और प्रभुत्व स्थापित कर पाते हैं।
Share it across your social networks.
अपने सोशल नेटवर्क पर शेयर करें

Every small step counts, share it across your friends and networks. You never know, the issue you care about, might find a champion.

हर छोटा बड़ा कदम मायने रखता है, अपने दोस्तों और जानकारों से ये मुद्दा साझा करें , क्या पता उन्ही में से कोई इस विषय का विशेषज्ञ निकल जाए।

Got few hours a week to do public good ?

Join the Research Action Group as a member or expert, work with the right team and make impact. To know more contact a Coordinator with a little bit of details on your expertise and experiences.

क्या आपके पास कुछ समय सामाजिक कार्य के लिए होता है ?

इस एक्शन ग्रुप के सहभागी बनें, एक सदस्य, विशेषज्ञ या समन्वयक की तरह जुड़ें । अधिक जानकारी के लिए समन्वयक से संपर्क करें और अपने बारे में बताएं।

Know someone who can help?
क्या आप किसी को जानते हैं, जो इस विषय पर कार्यरत हैं ?
Invite by emails.
ईमेल से आमंत्रित करें
The researches on ballotboxindia are available under restrictive Creative commons. If you have any comments or want to cite the work please drop a note to letters at ballotboxindia dot com.

Code# 6{{ agprofilemodel.currag.id }}

More on the subject.

Follow