Your search found 12 records
1 Sri Lanka. Ministry of Agriculture, Lands and Forestry; ADB. 1997. Upper watershed management study, Democratic Socialist Republic of Sri Lanka - Final report: Appendix 2 - Land resources, land use planning and watershed management, aspects (draft) Draft report prepared by LTS International Ltd, Resources Development Consultants and Hunting Technical Services Ltd. Project preparation technical assistance 2619. 65p.
Watershed management ; Catchment areas ; Land use ; Erosion ; Mapping ; Reservoirs ; Sedimentation ; Water potential ; Afforestation ; Soil water ; Water balance ; Models / Sri Lanka / Mahaweli / Uma Oya / Walawe Ganga / Kirindi Oya / Kalu Ganga
(Location: IWMI-HQ Call no: P 4461 Record No: H020415)
2 Sri Lanka. Ministry of Agriculture, Lands and Forestry; ADB. 1997. Upper watershed management study, Democratic Socialist Republic of Sri Lanka - Final report: Appendix 4 - Soil conservation and agricultural aspects (draft) Draft report prepared by LTS International Ltd, Resources Development Consultants and Hunting Technical Services Ltd. Project preparation technical assistance 2619. 48p.
Watershed management ; Soil conservation ; Farming systems ; Agricultural credit ; Agricultural extension ; Livestock ; Erosion ; Land tenure ; Rehabilitation ; Training ; Monitoring ; Evaluation / Sri Lanka / Uma Oya / Walawe Ganga / Kirindi Oya / Kalu Ganga
(Location: IWMI-HQ Call no: P 4463 Record No: H020417)
(1.75 MB)
3 Sri Lanka. Ministry of Agriculture, Lands and Forestry; ADB. 1997. Upper watershed management study, Democratic Socialist Republic of Sri Lanka - Final report: Appendix 8 - Initial environmental examination (draft) Draft report prepared by LTS International Ltd, Resources Development Consultants and Hunting Technical Services Ltd. Project preparation technical assistance 2619. ii, 60p.
Watershed management ; Environmental effects ; Monitoring ; Forestry ; Afforestation ; Soil classification / Sri Lanka / Kalu Ganga / Walawe Ganga / Kirindi Oya / Uma Oya
(Location: IWMI-HQ Call no: P 4466 Record No: H020420)
4 Sri Lanka. Ministry of Agriculture, Lands and Forestry; ADB. 1997. Upper watershed management study, Democratic Socialist Republic of Sri Lanka - Final report: Appendix 9B - Economic and financial analysis (draft) Draft report prepared by LTS International Ltd, Resources Development Consultants and Hunting Technical Services Ltd. Project preparation technical assistance 2619. 51p.
Watershed management ; Economic analysis ; Benefits ; Projects ; Costs ; Financing ; Crop production ; Income / Sri Lanka / Kalu Ganga / Walawe Ganga / Kirindi Oya / Uma Oya
(Location: IWMI-HQ Call no: P 4468 Record No: H020422)
5 Sri Lanka. Ministry of Mahaweli Development; Netherlands. Ministry of Foreign Affairs. NEDECO. 1979. Mahaweli Ganga Development Program Implementation Strategy Study - Volume 4: Annex I - Cost estimates and preliminary planning studies; Annex J - Geology (Annex 1, Part A: Multipurpose dams; Annex 1, Part B: Transbasin canals; Annex 1, Part C: Main canals and system head works; Annex 1, Part D: Minor irrigation system and settlement) Unpublished report. v.p.
Irrigation programs ; River basin development ; Development projects ; Project planning ; Cost benefit analysis ; Dams ; Irrigation canals ; Pumping ; Irrigation systems ; Settlement ; Geology / Sri Lanka / Mahaweli Project / Kotmale Project / Moragahakanda Project / Randenigala Project / Victoria Project / Maduruoya Project / Rantembe / Moragahakanda / Elehera / Angamadilla / Rotalawela / Kiri Oya / Maduru Oya / Uma Oya / Loggal Oya / Taldena / Hassalaka Oya / Heen ganga
(Location: IWMI-HQ Call no: R 631.7.8 G744 SRI Record No: H024308)
6 Medawewa, S. 1999. Proposed upper watershed management project. In Sri Lanka. Forest Department; Participatory Watershed Management Training in Asia (PWMTA). Proceedings of the Workshop on Watershed Management, Sri Lanka Forestry Institute, Nuwara Eliya, Sri Lanka, 24-25 April 1997. Battaramulla, Sri Lanka: Forest Department. pp.115-121.
Water management ; Development projects ; Environmental sustainability / Sri Lanka / Uma Oya / Walawe Ganga / Kirindi Oya / Kalu Ganga
(Location: IWMI HQ Call no: 333.91 G744 SRI Record No: H025395)
7 Manthritileka, H. M. 1999. Economic implications of land use changes: Hydrological perspective. In Chisholm, A.; Ekanayake, A.; Jayasuriya, S. (Eds.), Economic policy reforms and the environment: Land degradation in Sri Lanka. Colombo, Sri Lanka: Ministry of Public Administration, Home Affairs & Plantation Industries. pp.414-434.
Hydrology ; Erosion ; Sedimentation ; Catchment areas ; Reservoirs ; Economic aspects ; Land use ; Hydroelectric schemes ; Water use ; Rain ; Stream flow ; Surface runoff ; Water potential / Sri Lanka / Kotmale / Victoria / Randenigala / Polgolla / Maha Oya / Rantembe / Uma Oya
(Location: IWMI-HQ Call no: 333 G744 CHI Record No: H027627)
8 Somatilake, H. S. 2002. Water for energy. In Imbulana, K. A. U. S.; Droogers, P.; Makin, I. W. (Eds.), World Water Assessment Programme Sri Lanka case study, Ruhuna basins: Proceedings of a Workshop held at Koggala Beach Hotel, Sri Lanka, 7-9 April 2002. Colombo, Sri Lanka: IWMI. pp.129-141.
Electricity supplies ; Hydroelectric schemes ; Energy ; Institutions ; Public sector ; Private sector ; Production costs ; Discharges / Sri Lanka / Uma Oya / Ruhuna Basin / Uda Walawe / Samanalawewa
(Location: IWMI-HQ Call no: IWMI 333.91 G744 IMB Record No: H031116)
9 JICA; Sri Lanka. Ministry of Plan Implementation, Ethnic Affairs and National Integration. 1997. The Master Plan Study for Southern Area Development in the Democratic Socialist Republic of Sri Lanka: Final report – Sector report 3 – Water resources. Unpublished report. Nippon Koei Co., Ltd.; International Development Center of Japan; System Science Consultants Inc. v, 60p. + appendix.
National planning ; Development projects ; Regional development ; Water resources development ; River basins ; Water policy ; Water supply ; Water demand ; Water balance ; Watershed management ; Groundwater ; Assessment ; Sanitation ; Runoff ; GIS / Sri Lanka / Galle District / Matara District / Hambantota District / Tissa-Debarawewa / Menik Ganga / Uma Oya / Mau Ara diversion / Weli Oya / Muruthawela / Gin Ganga / Nilwala Ganga
(Location: IWMI-HQ Call no: P 6237 Record No: H031388)
10 De Silva, R. P. (Ed.) 2005. Sweden international training course on remote sensing education for educators, decadal proceedings 1990-2004: a collection of selected papers submitted by former participants. Peradeniya, Sri Lanka: Geo Informatics Society of Sri Lanka (GISSL) 116p.
GIS ; Remote sensing ; Habitats ; Mapping ; Rivers ; Ecosystems ; Soil fertility ; Groundwater recharge ; Land use ; Land cover / Nepal / Thailand / Sri Lanka / Vietnam / Chitwan District / Narayani River / Horton Plains / Deduru Oya / Uma Oya / Suoi Muoi Catchment
(Location: IWMI HQ Call no: 526.0285 G570 DES Record No: H040875)
11 Hashimoto, T. 2004. Asian experiences in water and regional development. In Biswas, A. K.; Unver, O.; Tortajada, C. (Eds.). Water as a focus for regional development. New Delhi, India: Oxford University Press (OUP) pp.14-53.
Water resources development ; Regional development ; Urbanization ; Irrigation water ; Water demand ; Water supply ; Sanitation ; Water balance ; Analysis ; Case studies / Asia / Philippines / Thailand / Sri Lanka / Myanmar / Laos / Central Luzon / Uma Oya / Kirindi Oya / Chao Phraya
(Location: IWMI HQ Call no: 333.91 G000 BIS Record No: H041110)
12 Gunawardhana, W. D. T. M.; Jayawardhana, J. M. C. K.; Udayakumara, E. P. N. 2016. Impacts of agricultural practices on water quality in Uma Oya catchment area in Sri Lanka. Procedia Food Science, 6:339-343. [doi: https://doi.org/10.1016/j.profoo.2016.02.068]
Water quality ; Agricultural practices ; Catchment areas ; Habitats ; Invertebrates ; Species ; Chemical compounds ; Pollutant load ; Ecological factors ; Farmland ; Land use ; Principal component analysis / Sri Lanka / Uma Oya
(Location: IWMI HQ Call no: e-copy only Record No: H047770)
http://www.sciencedirect.com/science/article/pii/S2211601X16000699/pdf?md5=4576562be7b258c1f31fbba8a85dc634&pid=1-s2.0-S2211601X16000699-main.pdf
https://vlibrary.iwmi.org/pdf/H047770.pdf
https://vlibrary.iwmi.org/pdf/H047770.pdf
(0.24 MB) (240 KB)
Sustainability of global food production is highly depending on the quality of the environment. In many parts of the world increase of agricultural production heavily depend on intensive agricultural practices which are having negative impact on the environment. The impacts of agricultural practices on surface water quality is given special attention currently since the safe and ample supply of freshwater is fundamental to humans and for the sustainability of ecosystem function. Intensive agricultural practices in river catchments often pose threat to the ecological integrity of river ecosystems. Uma Oya watershed in the upper Mahaweli watershed in Sri Lanka is an intensively cultivated landscape. In most parts of the catchment previously forested lands have been cleared and converted to agricultural lands. However, the empirical evidence on quantitative assessment of such land use conversion impacts on stream ecological health is lacking in the context of river catchments in Sri Lanka. Therefore the present study was aimed at evaluating the agricultural land use impacts on stream physical habitat quality, water quality and macroinvertebrate indices in the Uma Oya catchment at different spatial scales. The relationship between catchment and site scale % agricultural lands, water quality and macroinvertebrate indices were evaluated using univariate and multivariate approaches. The results indicated that stream physical habitat quality, water quality parameters and macroinvertebrate indices are significantly (p<0.05) affected by catchment scale % agricultural land cover. Among the water quality variables that were tested NO2-N, NH3-N, PO4-P and BOD5 level in sites with higher percentage of agricultural land cover exceeded the drinking water quality standards during dry season. PO4-P and BOD5 level in those sites exceeded the proposed ambient water quality standards for inland waters in Sri Lanka for aquatic life and for irrigation purposes. Findings of the present study suggest that catchment scale interventions are crucial for the management of Uma Oya watershed and for the improvement of water quality and sustainable agricultural production.
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