Your search found 13 records
1 Fink, A. (Ed.) 2003. The survey kit. Vol.8. How to assess and interpret survey psychometrics, by M. S. Litwin. 2nd ed. Thousand Oaks, CA, USA: Sage. 87p. (Survey Kit)
(Location: IWMI-HQ Call no: 300.723 G000 SUR Record No: H039092)
2 Kadhim, L. S.; Salih, S. A.; Qadir, Manzoor. 2010. Geochemistry of salt-affected wasteland resulting from long-term wastewater irrigation. Qadir, Manzoor; Wichelns, Dennis; Oster, J.; Jacobsen, S. -E.; Basra, S. M. A.; Choukr-Allah, R. (Eds.). Sustainable management of saline waters and salt-affected soils for agriculture: proceedings of the Second Bridging Workshop, Aleppo, Syria, 15-18 November 2009. Stimulating session 6. Aleppo, Syria: International Center for Agricultural Research in the Dry Areas (ICARDA); Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.65-72.
Geochemistry ; Soil salinity ; Testing ; Electrical conductivity ; Soil properties ; Waste land ; Wastewater irrigation / Syria / Aleppo / Qweik River
(Location: IWMI HQ Call no: IWMI 631.7.5 GG30 QAD Record No: H043451)
http://www.icarda.org/wli/pdfs/Books/ProceedingsOfSecondBridgingWorkshopBook.pdf
https://vlibrary.iwmi.org/pdf/H043451.pdf
https://vlibrary.iwmi.org/pdf/H043451.pdf
(0.38 MB) (3.08 MB)
3 Jayawardena, U. A.; Rajakaruna, R. S.; Navaratne, A. N.; Amerasinghe, Priyanie H. 2010. Toxicity of agrochemicals to common hourglass tree frog (Polypedates cruciger) in acute and chronic exposure. International Journal of Agriculture and Biology, 12(5): 641-648.
(Location: IWMI HQ Call no: e-copy only Record No: H043540)
http://www.fspublishers.org/ijab/past-issues/IJABVOL_12_NO_5/1.pdf
https://vlibrary.iwmi.org/pdf/H043540.pdf
https://vlibrary.iwmi.org/pdf/H043540.pdf
(0.15 MB)
Direct effect of four common agricultural pesticides viz., chlorpyrifos, dimethoate, glyphosate and propanil, on the survival, growth and development of malformations in common hourglass tree frog, Polypedates cruciger (Anura: Ranidae) was studied under laboratory conditions in acute and chronic exposure. Acute exposure to high concentrations was carried out to determine the LC50. The 48 h LC50 of the pesticides were within the Pesticide Area Network specified limits, except for propanil. The percentage survival of the tadpoles under chronic exposure to ecologically relevant doses was lower (glyphosate 75%, dimethoate 77.5%, chlorpyrifos 80% & propanil 85%) than the control group (95.5%) and was significantly affected by the concentrations. Exposed tadpoles took more time to metamorphose and were significantly smaller in size than the control tadpoles. They also developed malformations at high frequencies (glyphosate = 69%, dimethoate = 64%, chlorpyrifos = 60%, propanil = 45%). Malformations were mainly kyphosis (hunched back), scoliosis (curvature), skin ulcers and edema. However, severe limb malformations were not observed in the study. Chlorpyrifos had a profound effect even at very low concentrations (0.05 ppm). This study provides the first empirical evidence of a comparative study on the effect of pesticides on an endemic amphibian species in Sri Lanka and underscores the importance of investigation the level of agricultural pesticides in freshwater ecosystems and their effect on non-target organisms.
4 Japan International Cooperation Agency (JICA); Kokusai Kogyo Co. Ltd.; Cambodia. Ministry of Rural Development. 2002. The study on groundwater development in southern Cambodia. Final report - supporting report 1/2. Tokyo, Japan: Japan International Cooperation Agency (JICA); Tokyo, Japan: Kokusai Kogyo Co. Ltd. 207p.
Groundwater development ; Wells ; Drilling ; Pumping ; Testing ; Water quality ; Analysis ; Hygiene ; Education ; Waterborne diseases ; Public health ; Gender ; Woman's status / Cambodia
(Location: IWMI HQ Call no: e-copy only Record No: H044614)
(9.09 MB)
5 Wooldridge, J. M. 2010. Econometric analysis of cross section and panel data. 2nd ed. Cambridge, MA, USA: MIT Press. 1064p.
Statistical methods ; Econometrics ; Mathematical models ; Linear models ; Cross sectional analysis ; Simultaneous equation analysis ; Single equation analysis ; Regression analysis ; Multivariate analysis ; Non linear programming ; Estimation ; Data analysis ; Cluster sampling ; Testing
(Location: IWMI HQ Call no: 330.015195 G000 WOO Record No: H047137)
(0.88 MB)
6 Wooldridge, J. M. 2010. Econometric analysis of cross section and panel data. 2nd ed. Cambridge, MA, USA: MIT Press. 1064p.
Statistical methods ; Econometrics ; Mathematical models ; Linear models ; Cross sectional analysis ; Simultaneous equation analysis ; Single equation analysis ; Regression analysis ; Multivariate analysis ; Non linear programming ; Estimation ; Data analysis ; Cluster sampling ; Testing
(Location: IWMI HQ Call no: 330.015195 G000 WOO c2 Record No: H047138)
(0.88 MB)
7 Cameron, A. C.; Trivedi, P. K. 2010. Microeconometrics using stata. Rev. ed. College Station, TX, USA: Stata Press. 706p.
Microeconomics ; Statistical methods ; Econometrics ; Mathematical models ; Computer software ; Data management ; Computer programming ; Optimization methods ; Linear models ; Regression analysis ; Non linear programming ; Computer graphics ; Simulation ; Testing
(Location: IWMI HQ Call no: 330.015195 G000 CAM Record No: H047139)
(1.57 MB)
8 Cameron, A. C.; Trivedi, P. K. 2010. Microeconometrics using stata. Rev. ed. College Station, TX, USA: Stata Press. 706p.
Microeconomics ; Statistical methods ; Econometrics ; Mathematical models ; Computer software ; Data management ; Computer programming ; Optimization methods ; Linear models ; Regression analysis ; Non linear programming ; Computer graphics ; Simulation ; Testing
(Location: IWMI HQ Call no: 330.015195 G000 CAM c2 Record No: H047140)
(1.57 MB)
9 Okyere, C. Y.; Asante, F. A. 2017. Perceptions and determinants of households’ participation in a randomized evaluation on water quality testing and information in southern Ghana. Water Policy, 19(6):1206-1224. [doi: https://doi.org/10.2166/wp.2017.177]
Water quality ; Testing ; Households ; Attitudes ; Community involvement ; Wastewater treatment ; Information dissemination ; Evaluation techniques ; Experimentation ; Training ; Socioeconomic environment / Africa / Ghana / Shai-Osudoku District / Ga South Municipal
(Location: IWMI HQ Call no: e-copy only Record No: H048382)
(0.14 MB)
In this paper, we analyze perceptions and determinants of households’ participation in a randomized experiment on water quality testing and information in southern Ghana. Beneficiary households assessed the components of the intervention including its relevance and adequacy in improving understanding of water quality issues. Motivating and constraining factors to participation in the randomized experiment are also assessed. We also estimate the correlates of participation in the intervention. Social and economic benefits derived from the intervention based on perceptions are compared with impacts of the intervention using an instrumental variable approach. We found evidence that subjective analysis estimates of the effects of the intervention are higher than the objective analysis estimates. Households generally perceived the intervention to be relevant in improving their understanding of water quality issues. However, there are differing opinions based on random assignment into either child or adult treatment groups on most- and least-liked attributes of the intervention, and also motivating and constraining factors affecting participation in the intervention. The factors that statistically and significantly influenced participation in the intervention include educational attainment, ethnicity, religious denomination and marital status of the household heads, in addition to the location of residence.
10 Zelelew, D. G. 2017. Spatial mapping and testing the applicability of the curve number method for ungauged catchments in northern Ethiopia. International Soil and Water Conservation Research, 5(4):293-301. [doi: https://doi.org/10.1016/j.iswcr.2017.06.003]
Catchment areas ; Spatial database ; Mapping ; Testing ; Hydrological factors ; Runoff ; Discharges ; GIS ; Soil types ; Soil texture ; Land use ; Land cover ; Rain ; Estimation ; Models / Ethiopia / Godigne Catchment
(Location: IWMI HQ Call no: e-copy only Record No: H048433)
http://www.sciencedirect.com/science/article/pii/S2095633916300880/pdfft?md5=a01f0af5fbf5a6af8b90fb612805a7bb&pid=1-s2.0-S2095633916300880-main.pdf
https://vlibrary.iwmi.org/pdf/H048433.pdf
https://vlibrary.iwmi.org/pdf/H048433.pdf
(1.90 MB) (1.90 MB)
Understanding the spatial variability of land and water resources has significant importance for its planning, management, and utilization. It is also significant in understanding the response behavior of a catchment in order to model the basic physical processes. In this study, a weighted overlay analysis technique using ArcGIS was implemented for developing a geo-database of the standard curve number (SCN) in a catchment around Northern Ethiopia. The spatial data were used to investigate a 'standard curve number method' for the simulation of the direct runoff at the outlet of the catchment. Both spot based rainfall and runoff measuring techniques were adopted for deriving an instant observed flow measurement, and to make a comparison with the simulated flow values. The results showed that the model underestimated most of the simulated values with a coefficient of regression of R2 = 0.52, with a proportion of higher variances between the simulated and observed runoff events. The result suggests that the accuracy of the model leaves room for significant improvement and the method could not be easily adopted in the catchment and other similar catchments in the semi arid regions of Ethiopia. For improving the prediction capacity of the model, further research in adjusting loss factors in the method is recommended. It is also suggested for developing a localized and modified SCN values by considering geologic, climatic and seasonal variation. The results of this study and the maps generated can be used for improving the hydrological understanding of the catchment. The study is useful for further investigation of the SCN methodology in other un-gauged catchments around the world.
11 American Society of Civil Engineers (ASCE). Environmental and Water Resources Institute (EWRI). 2001. Standard guidelines for artificial recharge of ground water. Reston, VA, USA: American Society of Civil Engineers (ASCE). 106p. (ASCE Standard: EWRI/ASCE 34-01)
Groundwater recharge ; Artificial recharge ; Standards ; Guidelines ; Groundwater management ; Water resources ; Water availability ; Well construction ; Water drilling ; Aquifers ; Subsurface runoff ; Infiltration ; Wastewater treatment ; Water reuse ; Water quality ; Water rights ; Regulations ; Resource evaluation ; Testing ; Models ; Maintenance ; Hydrogeology ; Dams ; Environmental Impact Assessment ; Social participation ; Economic analysis ; Costs
(Location: IWMI HQ Call no: 627.56 G000 AME Record No: H048606)
(0.51 MB)
12 Mukuyu, Patience; Jayathilake, Nilanthi; Tijani, M.; Nikiema, Josiane; Dickens, Chris; Mateo-Sagasta, Javier; Chapman, D. V.; Warner, S. 2024. Country water quality profiles: towards developing an African Water Quality Program (AWaQ). Colombo, Sri Lanka: International Water Management Institute (IWMI). 86p. [doi: https://doi.org/10.5337/2024.215]
Water quality ; Monitoring ; Assessment ; Water pollution ; Pollution control ; Pollutants ; Policies ; Institutions ; Regulations ; Wastewater ; Laboratory techniques ; Testing ; Pathogens ; Nutrients ; Agricultural runoff ; Sediment ; Stakeholders / Africa / Egypt / Ghana / Kenya / Liberia / Malawi / Mauritania / Mauritius / Mozambique / Nigeria / Rwanda / Sierra Leone / Somalia / South Africa / South Sudan / United Republic of Tanzania / Tunisia / Zimbabwe
(Location: IWMI HQ Call no: e-copy only Record No: H052846)
(2.73 MB)
The African Ministers’ Council on Water (AMCOW) Secretariat committed to design and implement an African Water Quality Program (AWaQ) in its Strategic Operational Plan (2020-2024) considering the guiding frameworks it uses such as the Africa Water Vision 2025, United Nations Sustainable Development Goals (SDGs), and the African Union Agenda 2063: The Africa We Want. AMCOW reached out to the International Water Management Institute (IWMI) to support the development of such a program.
AWaQ builds on the rich experiences and lessons learned from past and ongoing regional and subregional water quality initiatives across Africa by different players, including African Union institutions, and the wider members of the World Water Quality Alliance (WWQA), as well as the AMCOW African Water and Sanitation Sector Monitoring and Reporting System (WASSMO).
The five phases of developing an African Water Quality Program (AWaQ) are explained in the following papers:
1. State of Water Quality Monitoring and Pollution Control in Africa (phase 1-2)
2. Innovations in Water Quality Monitoring and Management in Africa (phase 3-4)
3. A Framework for an African Water Quality Program (AWaQ) (phase 5)
4. Country Water Quality Profiles
This report is the last in the above list and contains the results of an AMCOW-IWMI Africa-wide survey that was conducted to gain a better understanding of the water quality situation of several countries in the region. The survey was conducted across Africa through the AMCOW network of African country representatives. Of the 54 AMCOW Member States, 31 responded to the survey offering their inputs on different water quality-related aspects. Water quality profiles of 17 of those countries are presented in this paper.
Each country profile contains a statistical summary of the water quality situation, a summary of the water pollution sources and impacts, the policies and institutions governing water quality, and some of the most important water monitoring and pollution control initiatives.
Although there are variations across countries in terms of the status of available capacity for water quality monitoring and management as well as pollution control, water pollution remains a critical challenge that provides an impetus for AWaQ.
AWaQ builds on the rich experiences and lessons learned from past and ongoing regional and subregional water quality initiatives across Africa by different players, including African Union institutions, and the wider members of the World Water Quality Alliance (WWQA), as well as the AMCOW African Water and Sanitation Sector Monitoring and Reporting System (WASSMO).
The five phases of developing an African Water Quality Program (AWaQ) are explained in the following papers:
1. State of Water Quality Monitoring and Pollution Control in Africa (phase 1-2)
2. Innovations in Water Quality Monitoring and Management in Africa (phase 3-4)
3. A Framework for an African Water Quality Program (AWaQ) (phase 5)
4. Country Water Quality Profiles
This report is the last in the above list and contains the results of an AMCOW-IWMI Africa-wide survey that was conducted to gain a better understanding of the water quality situation of several countries in the region. The survey was conducted across Africa through the AMCOW network of African country representatives. Of the 54 AMCOW Member States, 31 responded to the survey offering their inputs on different water quality-related aspects. Water quality profiles of 17 of those countries are presented in this paper.
Each country profile contains a statistical summary of the water quality situation, a summary of the water pollution sources and impacts, the policies and institutions governing water quality, and some of the most important water monitoring and pollution control initiatives.
Although there are variations across countries in terms of the status of available capacity for water quality monitoring and management as well as pollution control, water pollution remains a critical challenge that provides an impetus for AWaQ.
13 Mukuyu, Patience; Warner, S.; Chapman, D. V.; Jayathilake, Nilanthi; Dickens, Chris; Mateo-Sagasta, Javier. 2024. Innovations in water quality monitoring and management in Africa: towards developing an African Water Quality Program (AWaQ). Colombo, Sri Lanka: International Water Management Institute (IWMI). 52p. (IWMI Working Paper 208) [doi: https://doi.org/10.5337/2023.217]
Water quality ; Monitoring ; Innovations ; Technology ; Policies ; Regulations ; Guidelines ; Standards ; Laboratory techniques ; Instrumentation ; Analytical methods ; Testing ; Water resources ; Catchment areas ; Transboundary waters ; Groundwater ; Contaminants ; Water pollution ; Pollution control ; Parameters ; Bio-assays ; Human health ; Awareness-raising ; Data management ; Wastewater treatment ; Water reuse ; Nature-based solutions ; Intervention ; Community involvement ; Citizen science ; Capacity development ; Training ; Best practices ; Sustainable Development Goals ; Goal 6 Clean water and sanitation ; Earth observation satellites ; Sensors / Africa
(Location: IWMI HQ Call no: IWMI Record No: H052848)
(1.30 MB)
The African Ministers’ Council on Water (AMCOW) Secretariat committed to design and implement an African Water Quality Program (AWaQ) in its Strategic Operational Plan (2020-2024) considering the guiding frameworks it uses such as the Africa Water Vision 2025, United Nations Sustainable Development Goals (SDGs), and the African Union Agenda 2063: The Africa We Want. AMCOW reached out to the International Water Management Institute (IWMI) to support the development of such a program.
AWaQ builds on the rich experiences and lessons learned from past and ongoing regional and subregional water quality initiatives across Africa by different players, including African Union institutions, and the wider members of the World Water Quality Alliance (WWQA), as well as the AMCOW African Water and Sanitation Sector Monitoring and Reporting System (WASSMO).
The five phases of developing an African Water Quality Program (AWaQ) are explained in the following papers:
1. State of Water Quality Monitoring and Pollution Control in Africa (phase 1-2)
2. Innovations in Water Quality Monitoring and Management in Africa (phase 3-4)
3. A Framework for an African Water Quality Program (AWaQ) (phase 5)
4. Country Water Quality Profiles
This paper is the second in the above list and documents the greatest innovations in water quality monitoring and management in Africa, and proposes interventions to strengthen Africa’s current water quality monitoring and management efforts. Innovations related to monitoring program design, analytical techniques and instruments, deployment of instrumentation and approaches to water quality monitoring are presented together with their applicability and suitability for implementation in Africa. Similarly, water quality management interventions — policy and regulatory mechanisms, catchment-based management, data management and sharing, wastewater reuse and nature-based solutions, among others — are examined. The most suitable interventions are proposed for African contexts using criteria such as affordability, scalability and flexibility.
Key findings of this paper highlight the following:
1. There are numerous innovations within water quality monitoring and management. However, not all of them may be suitable for implementation in resource-constrained environments characteristic of many parts of Africa. For example, statistical analysis and modelling may require large amounts of existing monitoring data currently unavailable in most African countries. Nonetheless, other interventions such as the priority monitoring approach can be beneficial in optimizing resource utilization. Similarly, technological interventions such as multi-parameter sensors for basic water quality variables are now widely available and affordable in the provision of in situ results and lessening the need for laboratory analysis.
2. Available and existing traditional methods of water quality monitoring and management offer a good starting point to further strengthen and streamline efforts for increasing efficiency and effectiveness. Currently available laboratory facilities may benefit from instrumentation upgrades and continuous staff training.
3. There is scope for community and citizen engagement in the various processes of water resources monitoring and management. There is evidence that this enables success where governments do not have the monitoring capacity or adequate resources.
AWaQ builds on the rich experiences and lessons learned from past and ongoing regional and subregional water quality initiatives across Africa by different players, including African Union institutions, and the wider members of the World Water Quality Alliance (WWQA), as well as the AMCOW African Water and Sanitation Sector Monitoring and Reporting System (WASSMO).
The five phases of developing an African Water Quality Program (AWaQ) are explained in the following papers:
1. State of Water Quality Monitoring and Pollution Control in Africa (phase 1-2)
2. Innovations in Water Quality Monitoring and Management in Africa (phase 3-4)
3. A Framework for an African Water Quality Program (AWaQ) (phase 5)
4. Country Water Quality Profiles
This paper is the second in the above list and documents the greatest innovations in water quality monitoring and management in Africa, and proposes interventions to strengthen Africa’s current water quality monitoring and management efforts. Innovations related to monitoring program design, analytical techniques and instruments, deployment of instrumentation and approaches to water quality monitoring are presented together with their applicability and suitability for implementation in Africa. Similarly, water quality management interventions — policy and regulatory mechanisms, catchment-based management, data management and sharing, wastewater reuse and nature-based solutions, among others — are examined. The most suitable interventions are proposed for African contexts using criteria such as affordability, scalability and flexibility.
Key findings of this paper highlight the following:
1. There are numerous innovations within water quality monitoring and management. However, not all of them may be suitable for implementation in resource-constrained environments characteristic of many parts of Africa. For example, statistical analysis and modelling may require large amounts of existing monitoring data currently unavailable in most African countries. Nonetheless, other interventions such as the priority monitoring approach can be beneficial in optimizing resource utilization. Similarly, technological interventions such as multi-parameter sensors for basic water quality variables are now widely available and affordable in the provision of in situ results and lessening the need for laboratory analysis.
2. Available and existing traditional methods of water quality monitoring and management offer a good starting point to further strengthen and streamline efforts for increasing efficiency and effectiveness. Currently available laboratory facilities may benefit from instrumentation upgrades and continuous staff training.
3. There is scope for community and citizen engagement in the various processes of water resources monitoring and management. There is evidence that this enables success where governments do not have the monitoring capacity or adequate resources.
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