Storm water drains

In a previous article, we saw how Electronics City’s Township Authority (ELCITA) manages to keep its roads free of potholes by ensuring good drainage and prompt filling of potholes. Functioning stormwater drains that prevent waterlogging and seepage into road surfaces were identified as an important factor in ensuring pothole-free roads. BBMP too has its own set of guidelines on how to ensure effective drainage of rainwater from roads. In reality, however, whether those guidelines are being followed can be a hit or miss across the city. Residents also play their part by encroaching on roads and drains and dumping garbage…

‘Citizens Waterway Project,’ a part of Bengaluru Mission 2022, was launched in December 2020 by Karnataka’s Former Chief Minister B.S. Yediyurappa to upgrade the city’s infrastructure given its growing population and vehicles. ‘Citizens Waterway Project’, also known as Beautification of K-100 Rajakaluve, aims to develop the city’s storm water drains from KR market to Bellandur Lake. But the project raises multiple questions as it does not follow the Karnataka High Court and NGT orders on the protection of Rajakaluves (major stormwater drains) and lakes of Bangalore. Can beautification of K-100 improve the condition of the storm water drains? The proposed…

In Part 1 and Part 2 of this series, we saw that Bengaluru’s drains are poorly designed and that the government doesn’t even have a full database of the drainage network even as many drains have gone missing. In this article, we explore why these stormwater drain works do not yield results. When a government department entrusts any work to a contractor, it should follow clear procedures to verify the completed works and make payments. But this seems anathema to BBMP's Stormwater Drain (SWD) Department. A 2021 audit report by the Comptroller and Auditor General (CAG), an independent watchdog body,…

In Part 1 of this series, we saw that a CAG report of 2021 revealed Bengaluru does not have a complete map or database of its stormwater drain network. Drains are mapped in two master plans - the Revised Master Plan (RMP 2015) by the BDA (Bangalore Development Authority), and the BBMP’s master plan of drains. But the former does not indicate the type of drain (primary/secondary/tertiary), and the latter does not include tertiary/roadside drains at all. Neither plan has marked the buffer zones around drains; and many drains are missing in either document or both. Drains mapped in BBMP's…

It takes very little to flood a road or home in Bengaluru. In recent weeks, rains have caused severe flooding in many parts of the city, especially in North Bengaluru. A report by the Comptroller and Auditor General (CAG) on the city’s stormwater drain (SWD) system, released this September, shows why this shouldn’t be a surprise at all.  In any city, stormwater drains are critical for: Preventing flood and its related effectMaintaining clean lakes/water bodiesGroundwater recharge But Bengaluru’s drainage system has been badly mismanaged by the city corporation BBMP’s Stormwater Drain (SWD) department, finds the audit report. The report covered…

[BBMP, in coordination with other government agencies, has initiated the K100 (Citizens’ Water Way) project to rejuvenate the stormwater drain network between Majestic and Bellandur lake. Mod Foundation, an urban action and research institute, has been working with these agencies to ensure the project’s goals are met, and is also facilitating the overall design concept. The author, who is part of the Mod Foundation, gives details of the project in this article.] There is growing awareness about the dire state of Bengaluru’s lakes, which has mobilised citizens, institutions and the government to take action. Storm water drains (SWDs) are a…

KSNDMC warns of possible flooding in September Bengalureans felt the ripple effect of floods in Kodagu District (where a rainfall of 768mm left villages ravaged) on August 24, when the city received 43 mm of rainfall till 9 pm. Areas such as Malleswaram, Rajajinagar, Hebbal, Sadashivanagar, Kengeri, Adugodi and Mysore road received very heavy rainfall. Once the rain started, Karnataka State Natural Disaster Monitoring Centre (KSNDMC) issued warnings by dispatching messages through their mobile application to certain key areas. The centre has forecast heavy rain in the immediate future, and has intimated the same to BBMP. Scientists warn that 80 mm…

Mestripalya lake, waiting to be filled with water. Pic: Holly Thorpe After decades of delays and legal complications, the finish line for Mestripalya Lake is in sight—but just out of reach. The lake, located in Koramangala 3rd Block in East Bengaluru, is ready to receive water, but until the project is transferred from the BDA to the BBMP, it cannot be filled. The BDA has done all of the structural work visible today, including fencing the lake. Before development, the area was overgrown with weeds, and a receptacle for waste. Now, the lake has been dug out to receive water,…

BBMP, we know, has a plan to remodel storm water drains (SWDs) of Bengaluru. While BBMP is still working on the Detailed Project Reports (DPRs) and fund mobilisation to remodel the Rajakaluves, there seems to be somebody else working hard to remodel the major storm water drain that connects Madiwala lake to Bellandur lake, in South Bengaluru. A JCB digging a parallel channel next to the major storm water drain in Koramangala-Chalaghatta Valley area. Pic: Nikita Malusare Citizen Matters team happened to see a major work going on with JCBs digging the earth, in the eastern border of Koramangala ward.…

The recent trend of flowering trees blooming simultaneously has experts worried, though not panicked. Yet, this unnatural phenomenon is just one of the many warning signs that should be heeded. With its severe water shortage, rampant building activity, axing of beautiful, healthy trees and pollution of water bodies, Bangalore could be facing a disastrous situation. If this is not reversed, it could have severe repercussions.Whitefield is one example of how irrational and unscientific construction activity has severely affected the area. The sudden spurt in building activity began about 10 years ago despite no improvement or change in the water supply…