Your search found 191 records
1 International Water Management Institute (IWMI). 2005. Environmental flows: planning for environmental water allocation. Colombo, Sri Lanka: International Water Management Institute (IWMI). 6p. (IWMI Water Policy Briefing 015) [doi: https://doi.org/10.3910/2009.332]
Environmental flows ; Water allocation ; Water requirements ; Water scarcity ; River basins ; Water management
(Location: IWMI-HQ Call no: IWMI 333.91 G000 INT Record No: H037891)
(369 KB)
2 Smakhtin, Vladimir; Anputhas, Markandu. 2006. An assessment of environmental flow requirements of Indian river basins. Colombo, Sri Lanka: International Water Management Institute (IWMI). 36p. (IWMI Research Report 107) [doi: https://doi.org/10.3910/2009.106]
River basins ; Environmental flows ; Assessment ; Hydrology ; Ecology ; Ecosystems ; Water allocation ; Water requirements ; Time series / India
(Location: IWMI-HQ Call no: IWMI 551.483 G635 SMA Record No: H039610)
(488KB)
The primary purpose of this report is to stimulate the debate about environmental water allocations in India, where this concept is only beginning to receive attention and recognition. It is a component of a larger research project which aims to assess multiple aspects of India's National River Linking Project and water future in general.
3 Smakhtin, Vladimir; Arunachalam, M.; Behera, S.; Chatterjee, A.; Das, S.; Gautam, P.; Joshi, G. D.; Sivaramakrishnan, K. G.; Unni, K. S. 2007. Developing procedures for assessment of ecological status of Indian River basins in the context of environmental water requirements. Colombo, Sri Lanka: International Water Management Institute (IWMI). 34p. (IWMI Research Report 114) [doi: https://doi.org/10.3910/2009.114]
River basins ; Ecology ; Indicators ; Environmental flows ; Environmental management ; Habitats ; Biota ; Fish ; Ecosystems / India / Krishna River Basin / Chauvery River Basin / Narmada River Basin / Periyar River Basin / Ganga River Basin
(Location: IWMI HQ Call no: IWMI 577.64 G635 SMA Record No: H040333)
(772 KB)
This report attempts to introduce a prototype scoring system for the ecological status of rivers in India and illustrate it through the applications in several major river basins. This system forms part of the desktop environmental flow assessment and is based on a number of indicators reflecting ecological condition and sensitivity of a river. The unique aspect of this study is that it interprets, for the first time, the existing ecological information for Indian rivers in the context of environmental flow assessment. The report targets government departments, research institutions and NGOs which are engaged in environmental flow management and associated policy development, and suggests some subsequent steps in environmental flow work in India.
4 Arthington, A. H. 1994. A holistic approach to water allocation to maintain the environmental values of Australian streams and rivers: a case history. Mitt. Internat. Verein. Limnol.; Mitteilungen Internationale Vereinigung für Theoretische und Angewandte Limnologie, 24: 165-177.
Rivers ; Ecology ; Water allocation ; Water quality ; Fish ; Irrigation water ; Ecosystems ; Environmental flows / Australia / Queensland / Barker-Barambah Creek
(Location: IWMI HQ Call no: P 8006 Record No: H041278)
5 McCartney, Matthew P.; Shiferaw, A.; Seleshi, Y. 2008. Estimating environmental flow requirements downstream of the Chara Chara weir on the Blue Nile River. In Abtew, W.; Melesse, A. M. (Eds.). Proceedings of the Workshop on Hydrology and Ecology of the Nile River Basin under Extreme Conditions, Addis Ababa, Ethiopia, 16-19 June 2008. Sandy, UT, USA: Aardvark Global Publishing. pp.57-75.
Water management ; River basin management ; Ecology ; Rivers ; Environmental flows ; Environmental effects ; Downstream ; Weirs ; Hydrology ; Models ; Ecosystems ; Water power / Africa / Ethiopia / Sudan / Blue Nile River / Abay River / Chara Chara Weir / Lake Tana
(Location: IWMI HQ Call no: IWMI 577.64 G100 MCC Record No: H041346)
(1.27 MB)
Over the last decade flow in the Abay River (i.e., the Blue Nile) has been modified by operation of the Chara Chara weir and diversions to the Tis Abay hydropower stations, located downstream of the rivers source, Lake Tana. The most conspicuous impact of these human interventions has been significantly reduced flows over the Tis Issat Falls. This paper presents the findings of a hydrological study conducted to estimate environmental flow requirements downstream of the weir. The South African desktop reserve model was used to determine both high and low flow requirements in the reach containing the Falls. The results indicate that to maintain the basic ecological functioning in this reach requires an average annual allocation of 862 Mm3 (i.e. equivalent to 22% of the mean annual flow). Under natural conditions there was considerable seasonal variation, but the absolute minimum mean monthly allocation, even in dry years, should not be less than approximately 10 Mm3 (i.e. 3.7 m3s-1). These estimates make no allowance for maintaining the aesthetic quality of the Falls, which are popular with tourists. The study demonstrated that, in the absence of ecological information, hydrological indices can be used to provide a first estimate of environmental water requirements. However, to ensure proper management, much greater understanding of the relationships between flow and the ecological condition of the riverine ecosystem is needed.
6 Atapattu, Sithara S.; Kodituwakku, Dekshika Charmini. 2009. Agriculture in South Asia and its implications on downstream health and sustainability: a review. Agricultural Water Management, 96(3):361-373.
River basins ; Land degradation ; Erosion ; Farming systems ; Tillage ; Irrigation systems ; Water pollution ; Pesticide residues ; Mangroves ; Biodiversity ; Ecosystems ; Wetlands ; Environmental flows ; Fisheries / South Asia / Bangladesh / Pakistan / India / Nepal / Maldives / Bhutan
(Location: IWMI HQ Call no: e-copy only Record No: H041676)
(0.48 MB)
Agriculture, a century old practice, has rarely been questioned as it is a necessity for feeding the world’s population. With the increase in food requirement, the sustainability of upland agriculture has posed threats to downstream and coastal areas of river basins. In South Asia, the coastal population depends on the lower part of the river basin for their livelihood such as agriculture and aquaculture. There have been numerous occasions where downstream areas have suffered as a consequence of ad hoc agricultural development activities upstream. Problems encountered in the downstream coastal areas include river desiccation, groundwater depletion, water pollution and sedimentation, salinization and salt water intrusion, soil erosion and nutrient depletion, and dynamic changes in the coastal wetland systems. The objective of this paper is to evaluate current agricultural practices, existing problems, and their implications downstream. This would facilitate the adoption of the river basin approach in managing water resources focusing on the South Asian region.
7 Bergkamp, G. 2006. Water and nature: a critical link for solving the water management crisis. In Rogers, P. P.; Llamas, M. R.; Martinez-Cortina, L. (Eds.). Water crisis: myth or reality?: Marcelino Botin Water Forum 2004. London, UK: Taylor and Francis. pp.253-257.
(Location: IWMI HQ Call no: 333.91 G000 ROG Record No: H042016)
8 Amarasinghe, Upali A.; Shah, Tushaar; Malik, R. P. S. (Eds.) 2009. Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1. India’s water future: scenarios and issues. Colombo, Sri Lanka: International Water Management Institute (IWMI). 403p. [doi: https://doi.org/10.5337/2011.002]
River basins ; Environmental flows ; Development projects ; Water requirements ; Irrigated farming ; Water demand ; Food demand ; Groundwater irrigation ; Irrigation efficiency ; Water harvesting ; Supplemental irrigation ; Water productivity ; Water conservation ; Drip irrigation ; Sprinkler irrigation ; Rainfed farming ; Agricultural policy / India
(Location: IWMI HQ Call no: IWMI 333.9162 G635 AMA Record No: H042029)
(0.10 MB)
9 Smakhtin, Vladimir; Anputhas, Markandu. 2009. An assessment of environmental flow requirements of Indian river basins. In Amarasinghe, Upali A.; Shah, Tushaar; Malik, R. P. S. (Eds.). Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1: India’s water future: scenarios and issues. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.293-328.
(Location: IWMI HQ Call no: IWMI 333.9162 G635 AMA Record No: H042045)
(686.88 KB)
10 Smakhtin, Vladimir; Arunachalam, M.; Sivaramakrishnan, K. G.; Behera, S.; Chatterjee, A.; Gautam, P.; Das, Srabani; Joshi, G. D.; Unni, K. S. 2009. Developing procedures for assessment of ecological status of Indian river basins in the context of environmental water requirements. In Amarasinghe, Upali A.; Shah, Tushaar; Malik, R. P. S. (Eds.). Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1: India’s water future: scenarios and issues. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.329-366.
River basins ; Indicators ; Environmental flows ; Environmental management ; Ecology ; Wetlands ; Habitats ; Biota ; Fish ; Ecosystems / India / Krishna River Basin / Chauvery River Basin / Narmada River Basin / Periyar River Basin / Ganga River Basin
(Location: IWMI HQ Call no: IWMI 333.9162 G635 AMA Record No: H042046)
(491.64 KB)
11 Mohile, A. D.; Anand, B. K. 2009. Natural flows assessment and creating alternative future scenarios for major river basins of peninsular India. In Amarasinghe, Upali A.; Shah, Tushaar; Malik, R. P. S. (Eds.). Strategic Analyses of the National River Linking Project (NRLP) of India, Series 1: India’s water future: scenarios and issues. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.381-403.
River basins ; Flow ; Estimation ; Hydrology ; Models ; Water transfer ; Water use ; Runoff ; Evapotranspiration ; Reservoirs ; Water storage ; Environmental flows ; Water balance ; Irrigation efficiency / India / Brahmani Baitarni River Basin / Cauvery River Basin / Godavari River Basin / Krishna River Basin / Mahanadi River Basin / Narmada River Basin
(Location: IWMI HQ Call no: IWMI 333.9162 G635 AMA Record No: H042048)
(279.34 KB)
12 International Lake Environment Committee (ILEC). 2005. Managing lakes and their basins for sustainable use: a report for lake basin managers and stake holders. Kusatsu, Japan: International Lake Environment Committee Foundation. 146p.
Lakes ; River basin management ; Planning ; Climate change ; Salinity ; Groundwater ; Flow discharge ; Environmental flows ; Water governance ; Institutions ; Organizations ; International waters ; International agreements ; Stakeholders ; Participatory management ; Decentralization ; Capacity building ; Policy ; Common property ; Gender ; Women ; Non governmental organizations ; User charges ; Funding ; Case studies
(Location: IWMI HQ Call no: 333.91 G000 INT Record No: H042120)
(5.25 MB)
13 Marton-Lefevre, J. 2009. From environmental flows to negotiated flows: the future of rivers in the era of rapid global change. In Chartres, Colin (Ed.). Words into action: delegate publication for the 5th World Water Forum, Istanbul, Turkey, 16-22 March 2009. London, UK: Faircount Media Group. pp.142-148.
Rivers ; Flow ; Climate change ; Greenhouse effect ; Disasters ; Water scarcity ; Dams ; Environmental flows
(Location: IWMI HQ Call no: IWMI 333.9162 G635 SAL Record No: H042198)
(1.14 MB)
14 McCartney, Matthew; Shiferaw, A.; Seleshi, Y. 2009. Estimating environmental flow requirements downstream of the Chara Chara weir on the Blue Nile River. Hydrological Processes, 23:3751-3758. [doi: https://doi.org/10.1002/hyp.7254]
Rivers ; Flow ; Ecosystems ; Dams ; Benefits ; Hydrology ; River basin management ; Models ; Environmental flows ; Water power ; Electrical energy ; Electricity supplies ; Water allocation / Ethiopia / Blue Nile River / Chara Chara weir / Tis Abay hydropower stations / Bahar Dar city / Tis Issat Falls / Lake Tana
(Location: IWMI HQ Call no: e-copy only Record No: H042242)
(0.20 MB)
Over the last decade, flow in the Abay River (i.e. the Blue Nile) has been modified by operation of the Chara Chara weir and diversions to the Tis Abay hydropower stations, located downstream. The most conspicuous impact of these human interventions is significantly reduced flows over the Tis Issat Falls. This paper presents the findings of a hydrological study conducted to estimate environmental flow requirements downstream of the weir. The Desktop Reserve Model (DRM) was used to determine both high and low flow requirements in the reach containing the Falls. The results indicate that to maintain the basic ecological functioning in this reach requires an average annual allocation of 862 Mm3 (i.e. equivalent to 22% of the mean annual flow). Under natural conditions there was a considerable seasonal variation, but the absolute minimum mean monthly allocation, even in dry years, should not be less than approximately 10 Mm3 (i.e. 3Ð7 m3 s1). These estimates make no allowance for maintaining the aesthetic quality of the Falls, which are popular with tourists. The study demonstrated that, in the absence of ecological information, hydrological indices can be used to provide a preliminary estimate of environmental flow requirements. However, to ensure proper management, much greater understanding of the relationships between flow and the ecological condition of the river ecosystem is needed.
15 Blake, D. J. H.; Friend, R.; Promphakping, B. 2009. Landscape transformations and new approaches to wetlands management in the Nam Songkhram River Basin in Northeast Thailand. In Molle, Francois; Foran, T.; Kakonen, M. (Eds.). Contested waterscapes in the Mekong region: hydropower, livelihoods and governance. London, UK: Earthscan. pp.173-202.
River basins ; Environmental flows ; Wetlands ; Floodplains ; Irrigation programs / Thailand / Nam Songkhram River Basin / Tung Mon River Basin / Mekong River Basin
(Location: IWMI HQ Call no: 333.91 G800 MOL Record No: H042357)
16 International Water Management Institute (IWMI) 2006. Developing a global environmental flows network. Environmental Flows, 3(1). 4p.
(Location: IWMI-HQ Call no: e-copy only Record No: H042396)
17 International Water Management Institute (IWMI). 2007. The International Riversymposium and Environmental Flows Conference: a timely event in the right place - the world's driest continent during severe drought. Environmental Flows, 4(1). 4p.
River basin management ; Environmental flows ; Nature conservation ; Conferences / Africa / Kenya / Tanzania / South Africa / Mara-Serengeti Ecoregion
(Location: IWMI-HQ Call no: e-copy only Record No: H042397)
(464 KB)
18 Awulachew, Seleshi Bekele; Erkossa, Teklu; Smakhtin, Vladimir; Fernando, Ashra. (Comps.) 2009. Improved water and land management in the Ethiopian highlands: its impact on downstream stakeholders dependent on the Blue Nile. Intermediate Results Dissemination Workshop held at the International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia, 5-6 February 2009. Summary report, abstracts of papers with proceedings on CD-ROM. Colombo, Sri Lanka: International Water Management Institute (IWMI). 48p. [doi: https://doi.org/10.3910/2009.201]
River basin management ; Water governance ; Environmental flows ; Simulation models ; Reservoirs ; Sedimentation ; Rainfall-Runoff relationships ; Hydrology ; Water balance ; Erosion ; Soil conservation ; Watersheds ; Irrigation schemes ; Water use / Ethiopia / Sudan / Blue Nile / Lake Tana Subbasin / Gumera Watershed / Roseires Reservoir / Rahad Scheme / Abbay River Basin
(Location: IWMI HQ Call no: IWMI 333.9162 G100 AWU Record No: H042497)
19 Alemayehu, T.; McCartney, Matthew; Kebede, S. 2009. Simulation of water resource development and environmental flows in the Lake Tana Sub basin. In Awulachew, Seleshi Bekele; Erkossa, Teklu; Smakhtin, Vladimir; Fernando, Ashra (Comps.). Improved water and land management in the Ethiopian highlands: its impact on downstream stakeholders dependent on the Blue Nile. Intermediate Results Dissemination Workshop held at the International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia, 5-6 February 2009. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.23-37.
Lakes ; Water resources development ; Environmental flows ; Simulation models ; Irrigation schemes ; Water power ; Water demand / Ethiopia / Lake Tana / Chara Chara Weir
(Location: IWMI HQ Call no: IWMI 333.9162 G100 AWU Record No: H042505)
(0.50 MB)
Lake Tana is a natural reservoir for the Blue Nile River which has huge potential for hydropower and irrigation development. Water resource development is being encouraged by the government to stimulate economic growth and reduce poverty. In this study, the Water Evaluation And Planning (WEAP) model was used to simulate planned hydropower and irrigation development scenarios. Simulation of water demand and estimated downstream environmental flows was conducted for a 36-year period of varying flow and rainfall. Based on the simulation results, water availability for the different proposed irrigation and hydropower schemes was determined. The likely impact of future water resource development on water levels of the lake was assessed based on the simulation results of three development scenarios. The simulation results revealed that, if the full future development occurs, on average, 2,207 GWhy-1 of power could be generated and 548 Mm3y-1 of water could be supplied to irrigation schemes. However, the mean annual water level of the lake would be lowered by 0.33 meters (m) with a consequent decrease of 23 km2 in the average surface area of the lake. Besides having adverse ecological impacts, this would also have significant implications for shipping and the livelihoods of many local people.
20 Weligamage, Parakrama; Butcher, W. R.; Blatner, K. A.; Shumway, C. R.; Giordano, Mark. 2009. Non-user benefits emanating from enhanced water flow to Yala Protected Area Complex. [Abstract only]. Paper presented at the Water for Food Conference: national conference addressing water management issues, food security, environment and climate change in Sri Lanka, organized by the International Water Management Institute, Irrigation Department (Sri Lanka), Department of Agriculture (Sri Lanka), Hector Kobbekaduwa Agrarian Research and Training Institute, held at the Bandaranaike Memorial International Conference Hall, Colombo, Sri Lanka, 9 - 11 June 2009. 2p.
Ecosystems ; Water resource management ; Multiple use ; Decision making ; Water allocation ; Environmental flows / Sri Lanka / Menik Ganga / Veheragala Reservoir Project / Yala Protected Area Complex
(Location: IWMI HQ Call no: e-copy only Record No: H042632)
(0.05 MB)
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