Map with watersheds in Karnataka at different levels

"Uncovering the Hidden Pollution in the Arkavathi - Emerging Contaminants Impacting Bengaluru & Beyond" is a report from Paani.Earth on the contaminants found in Arkavathi river due to testing. This report summarizes the results of pollution testing along the Arkavathi River conducted by Paani.Earth, in collaboration with the International Centre for Clean Water, in February and March 2024. The study quantifies the risks of emerging pollutants such as pesticides, hazardous industrial pollutants, and heavy metals by evaluating dry season pollution samples from seven sites along the Arkavathi and its tributary, the Vrishabhavathi River. Paani tested samples for 65 unique water and 20 unique sediment pollution parameters. This report then compares testing results to national and international standards and guidelines for freshwater and sediment pollution. Citation: Paani.Earth. (2025). Uncovering the Hidden Pollution in the Arkavathi: Emerging Contaminants Impacting Bengaluru & Beyond.

Water quality data from the different Common Effluent Treatment Plants in Delhi.

Water quality data from the different Common Effluent Treatment Plants in Delhi from 2023 to 2024

Hydrology and river maps for Bengaluru including the rivers - Vrishabhavathi, Arkavathy and Dakshina Pinakini

Maps of river basins of India. Also includes Cauvery river basin map separately.

Data from the Jal Dharohar Water bodies census conducted by the Department of Water Resources, River Development and Ganga Rejuvenation. The census was conducted in 2018-19 and the data released in 2023.

Data from the Jal Dharohar Water bodies census conducted by the Department of Water Resources, River Development and Ganga Rejuvenation. The census was conducted in 2018-19 and the data released in 2023.

Data from the Jal Dharohar Water bodies census conducted by the Department of Water Resources, River Development and Ganga Rejuvenation. The census was conducted in 2018-19 and the data released in 2023.

Data from the Jal Dharohar Water bodies census conducted by the Department of Water Resources, River Development and Ganga Rejuvenation. The census was conducted in 2018-19 and the data released in 2023.

Data from the Jal Dharohar Water bodies census conducted by the Department of Water Resources, River Development and Ganga Rejuvenation. The census was conducted in 2018-19 and the data released in 2023.

Sites declared Water heritage sites by the Ministry of Jal Shakti in 2024

Inflow and outflow data for the five lakes around Chennai

Report from EMPRI on access to water in peri-urban parts of Bengaluru which don't come under BBMP or BWSSB.

Wetlands in Karnataka and Bengaluru Urban. Wetlands include - lakes, rivers, streams, man-made tanks, islands, salt pans among others.

Maps of waterbodies in Chennai

Maps of Hyderabad canals, drains, and tanks (lakes).

Data about wetlands in Tamil Nadu. Includes: 1. List of Ramsar sites in TN. 2. Stats on different types of wetlands. 3. Area under wetlands district-wise. 4. List of bird sanctuaries 5. List of 100 wetlands.

Lake levels of five lakes of Chennai in mcft from 2003