Your search found 4 records
1 Trivedy, R. K. (Ed.) 2000. Pollution and biomonitoring of Indian Rivers. Jaipur, India: ABD Publishers. 344p.
Rivers ; Water pollution ; Water quality ; Assessment ; Effluents ; Ecology ; Monitoring ; Sedimentary materials / India / Uttar Pradesh / Ganga River / Kerala / Kuttiadi River / Damodar River / Gujarat / Valsad / Bihar / Araria / Panar River / West Bengal / River Saraswati / Indore / Khan River / Purna River / Narkatiaganj / Kanpur / Safi / Sutlej / Karanpura / Kakrapar / Madhya Pradesh / Chambal Command / Tamil Nadu / Pandu River / Delhi / Karnataka / Bhadra River / Yamuna River / Santhal Pargana / Bareilly / Shankha River / Maharashtra / Ichalkaranji / Panchaganga River / Shivnath River / Bareilly / Ramganga River / Santhal Pargana / Mayurakshi River / Kheda Region / Sabarmati River / Shankha River / Tapi River / Krishna River / Koyana River / Assam / Dikhow River
(Location: IWMI-HQ Call no: 574.526323 G635 TRI Record No: H028408)
2 Seth, R.; Mohan, M.; Singh, P.; Singh, R.; Dobhal, R.; Singh, K. P.; Gupta, S. 2016. Water quality evaluation of Himalayan Rivers of Kumaun Region, Uttarakhand, India. Applied Water Science, 6(2):137-147. [doi: https://doi.org/10.1007/s13201-014-0213-7]
Water quality ; Evaluation ; Rivers ; Drinking water ; Irrigation water ; Contamination ; Chemicophysical properties ; Sodium ; Adsorption ; Correlation analysis ; Seasonal variation ; Monsoon climate / India / Himalayan Region / Uttarakhand / Kumaun Region / Gola River / Ramganga River / Saryu River / Kosi River / Lohawati River
(Location: IWMI HQ Call no: e-copy only Record No: H048097)
https://link.springer.com/content/pdf/10.1007%2Fs13201-014-0213-7.pdf
https://vlibrary.iwmi.org/pdf/H048097.pdf
https://vlibrary.iwmi.org/pdf/H048097.pdf
(0.91 MB) (928 KB)
Water quality of Himalayan rivers has been steadily deteriorating over several decades due to anthropogenic activities, dumping of treated or untreated effluents, poor structured sewerage and drainage system, etc. In the present study, the water quality of five important rivers namely, Gola, Kosi, Ramganga, Saryu and Lohawati rivers were investigated which flow through the different districts of Kumaun region of Uttarakhand Himalaya. The water of all these rivers serves as the major source for drinking and irrigation purposes in these districts of the Kumaun region of Uttarakhand. River water samples collected in pre-monsoon and post-monsoon seasons of the years 2011 and 2012 were analyzed for various water quality characteristics. Statistical analyses indicate positive correlation among most of the chemical parameters. Piper diagram illustrates that all the water samples fall in Ca–Mg–HCO3 hydrochemical facies, Moreover, the suitability of water for drinking purposes determined by water quality index indicated that river water in both the seasons is unsuitable. Irrigation water quality of all the river water was found suitable during both the seasons according to the result of sodium adsorption ratio, sodium percentage and residual sodium carbonate. The present study revealed that major factors contributing to deterioration of water quality of all the rivers might be eutrophication, tourism, anthropogenic and geogenic processes. Therefore, to restore the vitality and water quality of all these rivers, proper water resource planning programme should be developed.
3 Jaiswal, D.; Pandey, J. 2021. Human-driven changes in sediment-water interactions may increase the degradation of ecosystem functioning in the Ganga River. Journal of Hydrology, 598:126261. [doi: https://doi.org/10.1016/j.jhydrol.2021.126261]
Rivers ; Sediment ; Water quality ; Degradation ; Metal pollution ; Heavy metals ; Ecosystems ; Biogeochemical cycle ; Dissolved oxygen ; Tributaries / India / Ganga River / Ramganga River / Varuna River
(Location: IWMI HQ Call no: e-copy only Record No: H050507)
(7.73 MB)
While it is widely accepted that the magnitude of river water quality degradation depends upon the proportion of human interventions, the overall changes are ultimately the consequence of interconnected biogeochemical processes with poorly understood role of ecosystem feedbacks. Here, we conducted in situ and incubation experiments, considering a 620 km Ganga River main stem, two tributaries and two point source downstream locations for trajectory studies to analyze the human-driven changes in ecosystem feedback associated changes in ecosystem functioning of the Ganga River and its tributaries. The main stem coupled trajectory analyses show that benthic hypoxia/anoxia resulting from intensive human releases generates positive feedbacks (sediment-P and –metal release) to exacerbate the degradation of ecosystem functioning in the Ganga River and tributaries. We found 1.9 to 4.6 times higher rates of sediment-P release and about 1.1 to 3.7 times higher rates of sediment-metal releases at sites with DOsw < 2.0 mg/L. Excess release of phosphorus from sediment enhanced the eutrophy whereas sediment-metal release and bioavailability led to a sharp decline in microbial biomass and FDAase activity. The Carlson’s index, ecological response index, Dodds’s trophic state classification, and risk index support these results because the sites with benthic hypoxic/anoxic condition did show trophic state in eutrophic to hypereutrophic range and metal pollution in very high to extremely polluted and high risk category indicating significant effect of these drivers. The study, for the first time, showed that positive feedbacks exacerbate the degradation of ecosystem functioning in human-impacted large rivers. We suggest the need for increased efforts considering the magnitude and connectivity of positive feedbacks and associated repercussions for improving mechanistic understanding of their contributions to overall structural and functional shifts in the large rivers.
4 Arthington, A. H.; Tickner, D.; McClain, M. E.; Acreman, M. C.; Anderson, E. P.; Babu, S.; Dickens, Chris W. S.; Horne, A. C.; Kaushal, N.; Monk, W. A.; O’Brien, G. C.; Olden, J. D.; Opperman, J. J.; Owusu, Afua G.; Poff, N. L.; Richter, B. D.; Salinas-Rodríguez, S. A.; Shamboko Mbale, B.; Tharme, R. E.; Yarnell, S. M. 2023. Accelerating environmental flow implementation to bend the curve of global freshwater biodiversity loss. Environmental Reviews, 27p. (Online first) [doi: https://doi.org/10.1139/er-2022-0126]
Environmental flows ; Freshwater ; Biodiversity ; Ecosystem services ; Resilience ; Rivers ; Water availability ; Water users ; Stakeholders ; Climate change ; Constraints ; Legislation ; Regulations ; Monitoring ; Funding ; Socioeconomic aspects ; Ecological factors ; Infrastructure ; Human resources ; Capacity development ; Training ; Case studies / USA / Guatemala / Mexico / Canada / UK / South Africa / Zambia / India / China / Australia / Putah Creek Tributary / Usumacinta River / Peace-Athabasca Delta / Savannah River / Roanoke River / Great Brak River Estuary / Olifants River / Luangwa River / Nile River Basin / Ramganga River / Yangtze River / Lower Goulburn River
(Location: IWMI HQ Call no: e-copy only Record No: H052092)
(1.91 MB) (1.91 MB)
Environmental flows (e-flows) aim to mitigate the threat of altered hydrological regimes in river systems and connected waterbodies and are an important component of integrated strategies to address multiple threats to freshwater biodiversity. Expanding and accelerating implementation of e-flows can support river conservation and help to restore the biodiversity and resilience of hydrologically altered and water-stressed rivers and connected freshwater ecosystems. While there have been significant developments in e-flow science, assessment, and societal acceptance, implementation of e-flows within water resource management has been slower than required and geographically uneven. This review explores critical factors that enable successful e-flow implementation and biodiversity outcomes in particular, drawing on 13 case studies and the literature. It presents e-flow implementation as an adaptive management cycle enabled by 10 factors: legislation and governance, financial and human resourcing, stakeholder engagement and co-production of knowledge, collaborative monitoring of ecological and social-economic outcomes, capacity training and research, exploration of trade-offs among water users, removing or retrofitting water infrastructure to facilitate e-flows and connectivity, and adaptation to climate change. Recognising that there may be barriers and limitations to the full and effective enablement of each factor, the authors have identified corresponding options and generalizable recommendations for actions to overcome prominent constraints, drawing on the case studies and wider literature. The urgency of addressing flow-related freshwater biodiversity loss demands collaborative networks to train and empower a new generation of e-flow practitioners equipped with the latest tools and insights to lead adaptive environmental water management globally. Mainstreaming e-flows within conservation planning, integrated water resource management, river restoration strategies, and adaptations to climate change is imperative. The policy drivers and associated funding commitments of the Kunming–Montreal Global Biodiversity Framework offer crucial opportunities to achieve the human benefits contributed by e-flows as nature-based solutions, such as flood risk management, floodplain fisheries restoration, and increased river resilience to climate change.
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