Adapting to the challenges of changing water availability
Water and climate are inextricably linked. It is largely through water that most people will ‘experience’ climate change for the first time: through unpredictable rainfall, droughts and floods, and the disruption this will bring to our food systems, drinking water supplies and our connectivity.
Ahead of COP26, IWMI will focus on the link and the importance of how best to manage increasingly unpredictable water resources, particularly in the countries where we work. We will bring ideas and discussions on a range of solutions and tools – technical, policy, financial, knowledge – that can support countries adapt to the challenges of changing water availability and quality.
We advance a gender equality and social inclusion (GESI) framework for incorporating climate information services (CIS), which is now becoming central due to the ongoing climate change and climate variability. We understand gender as a social construct of who women and men are supposed to be. Gender inequalities seem to be enduring such that, despite innovations in agricultural and climate information technologies, unequal gender power dynamics will still emerge. As far back as the 1960s, the gendered inequalities in accessing technologies could be identified. Such a historical analysis clearly shows that the different technological solutions are clearly embedded within the society in which they evolve in. The paper uses a literature review methodological approach whilst informing the implementation of an ongoing Accelerating Impacts of CGIAR Climate Research for Africa (AICCRA) Project. The findings reveal that unless women are intentionally included in designing and developing agricultural technologies, specifically climate information systems, there is a danger that women will be excluded from the benefits. Conway’s law clearly stipulates that technological innovations are not neutral as they are a projection of the values of their creators. It is, therefore, central to grasp the values of creators of different technological solutions and innovations. The key findings are built around the espoused conceptual framework, which has five indicators, namely: (1) gender targeting by intentional design, (2) collection of sex-disaggregated data, (3) conduct an analysis of the sex-disaggregated data, (4) dissemination of the technological options and (5) conduct continuous monitoring of gender and ongoing empowerment evaluation. The five indicator domains are further complemented by their respective assumptions. Our GESI recommendations are on the five selected indicator domains. These domains must be used within the three focal development areas: agricultural data hub, climate information services training, and flood and drought indicators, which are all being implemented in Zambia. Other AICCRA Project countries are Ethiopia, Ghana, Kenya, Mali, and Senegal. This paper engages why CIS has not gained significant traction in Africa, as it has not genuinely incorporated the differential gender technological nuances.
Empowerment / Women / Climate variability / Climate change / Technology / Access to information / Climate services / Frameworks / Social inclusion / Gender equality Record No:H051578
Domfeh, M. K.; Diawuo, F. A.; Akpoti, Komlavi; Antwi, E. O.; Kabo-bah, A. T. 2023. Lessons for pumped hydro energy storage systems uptake. In Kabo-Bah, A. T.; Diawuo, F. A.; Antwi, E. O. (Eds.). Pumped hydro energy storage for hybrid systems. London, UK: Academic Press. pp.137-154. [DOI] More...
Pumped hydro energy storage (PHES) has for years been touted as a suitable alternative for balancing the mismatch between demand and supply of electricity. As the world transits from a fossil fuel-based electricity sector to a renewable energy-based one, PHES is also continuously being used to resolve challenges regarding variable or intermittent sources of energy. This chapter presents lessons from countless literature and studies on the global development and market environment of PHES. The study reveals that critical factors such as investing in public-private research, development and deployment, instituting regulatory frameworks that stimulate innovative operation of PHES, increasing digital operation of PHES systems, and retrofitting PHES facilities could foster the uptake and revolutionize the development of PHES.
Trends / Financing / Infrastructure / Markets / Electricity / Climate change / Socioeconomic aspects / Public-private partnerships / Decision making / Pumping / Storage / Renewable energy / Hydroelectric power Record No:H051549
An accurate estimate of crop coefficient (Kc) values at different development stages (Kcini, Kcmid, and Kcend) is crucial for assessing crop water requirements in semi-arid regions. The objectives of this study were first to quantify the reference evapotranspiration (ETo) and to calculate the actual evapotranspiration (ETa) over citrus in a semi-arid climate under drip irrigation. For this purpose, a site of a citrus orchard in Souss-Massa, planted with the Esbal variety of clementine, was equipped with an Eddy-Covariance (EC) system, and sensors to measure radiation, soil heat flux, and micrometeorological forcing data, during 2020 and 2021 seasons. Also, the soil moisture content at various soil depths in the root zone near the EC tower was monitored. The energy balance closure (EBC) approach was adopted for flux assessment to ensure a quality check for the EC measurements. The obtained EBCs were about 82% and 79% for the daily measurements in 2020 and 2021, respectively, which can be considered acceptable considering the nature of the citrus orchard (relatively tall and sparse). Second, the study aimed to estimate actual Kc act values for citrus under the same irrigation strategy. The derived values were compared to different recommended Kc values in the literature. In the third stage, this work aimed to offer an alternative plan to sustainable irrigation management by elaborating an irrigation schedule for citrus crops in the region using the FAO-56 simple approach to avoid water stress and deep percolation (i.e., Ks = 1 and DP = 0). Eventually, an irrigation schedule was drawn following the crop’s phenological stages. The seasonal mean citrus evapotranspiration (ETa) values are 1.68, 3.02, and 1.86 mm/day for the initial, mid, and end-season. The seasonal actual Kc act values were 0.64, 0.58, and 0.64 for Kcini, Kcmid, and Kcend, respectively. Additionally, the application of the water balance equation revealed that a large quantity of water is lost through deep percolation (52% of total water supplied). The study focuses on Citrus trees being a strategic crop with important socio-economic values in the Souss-Massa region. Thus, the results should support both scientists and farmers in planning and strategy development.
Eddy covariance / Mediterranean climate / Crop water use / Rain / Water stress / Water supply / Irrigation scheduling / Irrigation management / Water management / Agriculture / Energy balance / Soil water balance / Commercial farming / Semiarid climate / Deep percolation / Evapotranspiration / Citrus / Irrigated farming Record No:H051504
Quantifying water-saving potential (WSP) is crucial for sustainable water resource management in canal command areas and river basins. Previous studies have partially or fully ignored the importance of groundwater in WSP assessments, particularly in irrigated areas. This study is aimed at quantifying WSP in the Lower Chenab Canal (LCC) command area of the Indus River Basin, Pakistan, under various scenarios of future climate change and groundwater recharge. These quantifications are conducted using an empirical model based on the Budyko theory. The model was forced using observed, remote sensing, and CMIP6 future climate data for two Shared Socioeconomic Pathways (SSP245 and SSP585) and their ensembles (cold-dry, cold-wet, warm-dry, and warm-wet) for possible futures. The results showed that the average WSP in the LCC command area was 466 48 mm/year during the historical period (2001–2020). The WSP is projected to decrease by – 68 3% under the warm-dry ensemble scenario (SSP245 and SSP585) and – 48 13% under the ensembled cold-wet scenario by 2100. The results also demonstrated that WSP could be increased by up to 70 9% by artificially recharging 20% of the abstracted groundwater per year in the LCC command area by the late twenty-first century. Our findings highlight the importance of adopting artificial groundwater recharge to enhance the WSP and sustainably manage water resources in the LCC command area. Policymakers should consider these findings when deciding on water resource management in the Indus River Basin.
Models / Projections / Water availability / Artificial recharge / Energy balance / Water management / Water resources / Irrigation efficiency / Irrigation systems / River basins / Groundwater recharge / Climate change / Water conservation Record No:H052239
Although Ghana is a leading global cocoa producer, its production and yield have experienced declines in recent years due to various factors, including long-term climate change such as increasing temperatures and changing rainfall patterns, as well as drought events. With the increasing exposure of cocoa-producing regions to extreme weather events, the vulnerability of cocoa production is also expected to rise. Supplemental irrigation for cocoa farmers has emerged as a viable adaptation strategy to ensure a consistent water supply and enhance yield. However, understanding the potential for surface and groundwater irrigation in the cocoa-growing belt remains limited. Consequently, this study aims to provide decision-support maps for surface and groundwater irrigation potential to aid planning and investment in climate-smart cocoa irrigation. Utilizing state-of-the-art geospatial and remote sensing tools, data, and methods, alongside in-situ groundwater data, we assess the irrigation potential within Ghanaapos;s cocoa-growing areas. Our analysis identified a total area of 22,126 km2 for cocoa plantations and 125.2 km2 for surface water bodies within the cocoa-growing regions. The multi-criteria analysis (MCA) revealed that approximately 80% of the study area exhibits moderate to very high groundwater availability potential. Comparing the MCA output with existing borehole locations demonstrated a reasonable correlation, with about 80% of existing boreholes located in areas with moderate to very high potential. Boreholes in very high potential areas had the highest mean yield of 90.7 l/min, while those in low groundwater availability potential areas registered the lowest mean yield of 58.2 l/min. Our study offers a comprehensive evaluation of water storage components and their implications for cocoa irrigation in Ghana. While groundwater availability shows a generally positive trend, soil moisture and surface water have been declining, particularly in the last decade. These findings underline the need for climate-smart cocoa irrigation strategies that make use of abundant groundwater resources during deficit periods. A balanced conjunctive use of surface and groundwater resources could thus serve as a sustainable solution for maintaining cocoa production in the face of climate change.
Climate change / Water availability / Surface water / Remote sensing / Geographical information systems / Groundwater assessment / Groundwater potential / Land cover mapping / Land-use mapping / Groundwater irrigation / Cocoa / Climate-smart agriculture Record No:H052236
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Brokering knowledge for sustainability
As a research-for-development organization, IWMI is both a producer and broker of knowledge. IWMI generates evidence to support investment in innovations that sustainably increase agricultural productivity and economic returns, support human well-being, water security and safeguard ecosystems in a changing climate. Through forums and events, often co-convened with partners, IWMI brokers knowledge exchange to catalyze change in water and food systems and accelerate innovation scaling. These forums and events include multi-stakeholder dialogues, demand-supply linkage workshops and knowledge exchange conferences.
This focus area contributes to the following One CGIAR impact areas:
Enabling gender and youth inclusion
Agriculture is the bedrock of food and nutrition security and a major source of income and employment in many developing countries. Inclusive agriculture, provides opportunities for women and youth who have historically been excluded from agriculture-led economic growth. Enhancing gender and youth inclusion in high-value agricultural value chains has the potential to increase the production of nutrient-rich, profitable crops and create attractive job opportunities for currently disadvantaged groups. Inclusive agriculture includes ensuring that women, youth and other vulnerable groups gain equitable access to water resources and technologies to support agronomic growth.
IWMI conducts comprehensive analyses of the policy framework and interventions in value chains in key geographies to clarify the barriers to gender and youth inclusion. Inclusion segmentation is also carried out to understand the investment needs and abilities of women and youth regarding innovation. IWMI then makes recommendations and develops evidence-based strategies to enable public and private sector actors to achieve sustainable and inclusive scaling of water solutions and agricultural innovation bundles. Among these strategies are internships with private sector companies for young professionals and entrepreneurs. These create win-win situations in which companies benefit from interns’ specific knowledge or skills while interns gain valuable private sector work experience and mentorship.
This focus area contributes to the following One CGIAR impact areas:
Economics and equity
At IWMI, researching underlying economic and social trends helps us understand why people migrate. They also explain the impact of remittances and loss of agricultural labor, as well as consequences of migration on gender roles and food and water security. For instance, communities with higher levels of income inequality, or relative deprivation, may experience greater levels of out-migration compared to consistently low-income communities. In addition, migration changes intra-household gender-labor composition, which can change the access of smallholders to water resources, affecting the functioning of community-based institutions and consequently household and local food security. IWMI also focuses on circular economy, a strategy to recover and reuse waste, to boost food security and understand how interventions can encourage refugee and host communities to retain scarce resources.
This focus area contributes to the following One CGIAR impact areas:
Co-developing innovation bundles
Although agricultural water is still mainly funded by the public sector, private sector organizations and farmers are increasingly investing in innovative water management and irrigation technologies. At the same time, simply increasing the amount of finance flowing to the agricultural water sector is not enough to guarantee the uptake of innovative solutions. Investments must also be responsible, targeted and bundled with improved inputs and services, market information and access, and digital payment methods.
Consequently, IWMI partners with farmers and public and private sector actors to co-develop contextually relevant socio-technical-institutional-financial and process innovation bundles that are contextually relevant. IWMI integrates the scaling of innovation bundles into agricultural and food value chains, for instance by strengthening market linkages, to enhance the impacts on farmers’ investments, incomes and livelihoods.
This focus area contributes to the following One CGIAR impact areas:
Strengthening and sustaining the enabling environment
Making agricultural innovations and water solutions available to farmers on a massive scale is crucial if the world is to meet growing food demands and mitigate climate change impacts. However, innovation scaling efforts often do not have the desired impact because they do not sufficiently consider the factors enabling and inhibiting farmers’ adoption of these innovations. In some instances, they may even produce undesirable impacts, including environmental degradation, loss of access to resources and social inequality. IWMI develops tools and other evidence-based resources to help partners and stakeholders understand and sustain the enabling environment and introduce measures to ensure scaling success. In addition, IWMI co-designs innovative, inclusive financial modalities to accelerate investment in innovations by farmers and agri-businesses.
A key part of this focus area is the Accelerator Program, for which 12 small and medium-sized agribusinesses were selected to scale five innovation bundles that support climate information services and climate-smart agriculture.
This focus area contributes to the following One CGIAR impact areas:
Urban & rural transformation
As agricultural opportunities fluctuate in rural areas, migration, particularly to urban areas, is an adaptation technique to secure incomes and alternative livelihoods. Income generated by migrants is often sent back to family as remittances to support communities at home. At IWMI, we assess linkages between rural and urban areas, as well as the role of agricultural knowledge systems and food and water security. We recognize there are complex push and pull factors such as individual aspirations, economic opportunity, social norms, climate variability and government policies which drive migration and affect rural communities, particularly youth. Our work follows a ‘positive migration’ philosophy, framing migration as an adaptation technique and socio-economic choice (in many cases) rather than a problem to be solved, and focuses on establishing safer, more regular migration by supporting changes to migration governance in sending regions.
This focus area contributes to the following One CGIAR impact areas:
Covid-19 disruption & adaptation
Covid-19 has caused a rupture in migration logistics and exposed inequities in the migration system, yet drivers of movement remain. Government lockdowns and closed borders due to the pandemic curtailed movement for migrants, posing complex problems for migrant hosting and origin countries. There have been significant economic shocks, with a sharp decline in unemployment for migrants and an inability to send money home through remittances to support family. Some migrants face social stigma for returning home without an income, particularly if families relied on loans to support their journeys. Consequences have been severe for informal migrants who lack government protection in their host countries. Migrants, particularly those living in crowded, lower-income neighborhoods, have been experiencing stigmatization related to the spread of Covid-19. We look at the impacts of Covid-19 on migration governance and rural areas across seven countries,development planning in Ghana, migration challenges in Southeast Asia, and community-based disaster management and resilience building in South Africa.
This focus area contributes to the following One CGIAR impact areas:
Water, climate change and agrarian stress
Migration, water and climate stress are inextricably linked to rural development. Water stress and climate variability can act as a driver of fragility, intensifying pre-existing political, social, economic and environmental challenges. Initiatives designed to address migration-related challenges must tackle inequalities and the exclusion of women, youth and marginalized groups; governance opportunities to better manage water and natural resources and technology and innovations to help communities escape socio-ecological precarity and thrive despite climate challenges. IWMI intends to build climate resilience by implementing projects which tackle gender-power inequalities in the face of dynamic, economic-social-ecological challenges. Our work brings together affected communities, institutional stakeholders and social actors to manage water in response to climate variability and agrarian stress, striving to address complex physical and social variables.
This focus area contributes to the following One CGIAR impact areas:
Gender, intersectionality and social inclusion
It is critical to center gender and intersectional identities when unpacking migration phenomena. Gender as a social construct guides social norms and relations, including the decision-making processes and mechanisms leading to migration. We recognize that the intersections between race, age, class, sex, caste and region shape the migrant experience.
IWMI strives to offer transformative approaches and solutions for women, youth and marginalized groups, regarding them as equal partners in our work rather than passive end-users. For example, within communities that experience male out migration, socio-political systems are restructured to make women, youth and other groups active agents in their own agri-food transformation. Migration patterns contribute to the feminization of agriculture, and women may experience a greater burden of responsibility coupled with an increased ability to access and control resources and policies to build sustainable livelihoods. Acknowledging social complexities helps researchers and communities understand migration trends and address structural power imbalances to build a more equitable world.
This focus area contributes to the following One CGIAR impact areas:
Enhancing capacity for system transformation
Food, land and water systems are complex networks of actors, institutions and activities related to the production, value addition and consumption of food. These systems are connected to and influenced by the structures and supporting mechanisms that underlie them. System transformation cannot occur without changing these underlying structures and supporting mechanisms. However, the capacity for actors to take up specific roles and responsibilities in scaling processes is sometimes lacking. Stimulating system transformation therefore requires enhancing actors’ capacity to assume their roles and responsibilities in the system to ensure that scaling processes provide equitable opportunities and contribute to sustainable development.
As a research institution, IWMI stimulates system transformation by building capacity within institutions and facilitating dialogue and collaboration between various stakeholders across sectors and their respective networks. IWMI does this by developing evidence-based capacity-strengthening programs and strategies. These include demand-driven internships with private sector entities and innovation hackathons.
This focus area contributes to the following One CGIAR impact areas:
Fostering scaling partnerships
Private sector actors play a central role in the dissemination and adoption of technologies and services such as information, financing, and pre- and after-sales support. IWMI has established scaling partnerships with private sector companies across Africa and Asia. Besides technical assistance, IWMI provides its partner companies with research evidence and advice, risk and suitability assessments and capacity strengthening for effective climate change-related planning and management.
Armed with these tools and resources, companies are better equipped to identify and reach their target customers in ways that are equitable, economically viable and environmentally sustainable. At the same time, farmers benefit from better access to innovations vital for improving livelihoods and climate adaptation.
This focus area contributes to the following One CGIAR impact areas:
Cultivating scaling preparedness
Scaling preparedness is a set of actions undertaken throughout the scaling process to maximize the adoption of innovation bundles, accelerate scaling and increase the likelihood of achieving transformational change. In cultivating scaling preparedness, stakeholder engagement is key to gain stakeholders’ buy-in, commitment, resource contribution and investment as well as adaptability. By cultivating scaling preparedness, IWMI is better able to identify and develop high-potential innovation bundles with the greatest chance of being successfully scaled.
This focus area contributes to the following One CGIAR impact areas:
Innovation bundles
Farmer-led irrigation development is about much more than installing a pump in a field. It requires access to financing, labor, energy, and input and output markets, so that investments in irrigation translate into sustainable returns. IWMI uses a systemic approach to understand the farming system as well as the factors in the enabling environment that prevent women, men and youth from engaging in and benefitting equitably from farmer-led irrigation. We partner with farmers and the public and private sectors to test contextually relevant innovation bundles that combine irrigation technology such as solar pumps with financing mechanisms like pay-as-you-own or pay-as-you-go, agricultural inputs and agronomic techniques. We also look at ways to improve on-farm water management and nutrient use efficiency and reduce evapotranspiration through digital advances and agricultural extension. We integrate the scaling of innovation bundles into agricultural value chains to enhance the impacts on farmers’ irrigation investments, incomes and livelihoods.
This focus area contributes to the following One CGIAR impact areas:
Gender and social inclusion
The barriers facing women and men in accessing irrigation technologies are not the same. Neither are the benefits. Social, cultural and religious norms influence inter- and intra-household power relations. These, in turn, affect access to resources such as land, credit, information and training. IWMI carries out cross-dimensional analysis of gender and social inclusion in policy, financing, livelihood assets and access, institutional approaches and interventions as well as gender-based technology preferences. For example, we work with farmers, financial institutions and the private sector to address gender-based constraints in credit scoring and enhance women’s purchasing power. But benefitting from farmer-led irrigation does not stop at accessing and adopting technologies; enabling women and resource-poor farmers to participate in input and output markets is equally important to ensure that investments in irrigation result in improved nutrition and economic empowerment. Other ways we enhance gender and social inclusion include tackling agency issues around financial management and literacy, livelihood diversity and social capital as well as access to infrastructure, extension services and market linkages.
This focus area contributes to the following One CGIAR impact areas:
Environmental sustainability
Population pressure and increasing water competition in a changing climate require us to take stock of the availability and use of water across scales. Water availability not only influences farmers’ commercial prospects but also irrigation-related enterprises and agri-businesses. Greater water scarcity could jeopardize irrigation and agricultural markets while excessive water use can lead to declining ecosystems, water quality and soil health. IWMI advises development partners and the public and private sectors on all aspects of water resource availability and use through a variety of advanced modeling and remote-sensing products and tools, including Water Accounting+, solar irrigation mapping and internet of things. These are complemented by multi-criteria analysis to evaluate the potential of irrigation expansion, taking into consideration environmental flows. With our private sector partners, we are leveraging converging technologies, such as sensors on solar pumps that capture usage data, to encourage better resource management and governance.
This focus area contributes to the following One CGIAR impact areas:
Adaptive scaling and partnerships
The ability of farmers to engage in or expand irrigation depends on the prevailing socioeconomic, ecological and political contexts, which are often complex, non-linear and changeable. Overcoming systemic barriers to farmer-led irrigation development while taking advantage of existing opportunities requires scaling processes to be adaptive. This means diverse actors feed off, adapt to, support, cooperate, compete and interact with each other, forming different multi-actor networks and engaging in collective action to undertake various functions in the scaling ecosystem. IWMI works with farmers and public and private sector partners to co-design and pilot contextually relevant innovation bundles and their scaling pathways or strategies, influence policies and accelerate the transition to scale of innovations with demonstrated early impact.
This focus area contributes to the following One CGIAR impact areas:
Financing ecosystem
A lack of affordable credit, particularly for women and resource-poor farmers, is one of the main barriers to expanding farmer-led irrigation in low- and middle-income countries. But credit alone is not enough. Financing for irrigation equipment must be embedded in a wider financing ecosystem that bundles credit with inputs and services, market information and access, and technology such as digital payment. In several countries, irrigation equipment suppliers are stepping in to provide financing directly to farmers. In doing so, they increase their own risk. To address this issue, IWMI works with farmers, private companies, finance institutions and development partners such as the World Bank Group to analyze whether credit-scoring tools are inclusive. We also help to identify gaps in the financing ecosystem and de-risk the private sector from testing innovative end-user financing mechanisms that take into account farming system typologies, financial and social capital and crop seasonality.
This focus area contributes to the following One CGIAR impact areas:
Human capacity development and knowledge exchange
Scaling farmer-led irrigation requires strengthening human capacity and knowledge exchange among all actors and stakeholders involved. IWMI takes an action research approach, working with national and international research institutions, governments, extension agents and public and private organizations to co-develop the scaling ecosystem and strengthen capacity to drive scaling networks and collective action. We support the development of or reinforce national multi-stakeholder dialogues with the aim of sharing scaling experiences and realizing win-win collaboration, interactive learning and capacity development. Other modalities for capacity development include hackathons, innovation research grants for bachelor’s and master’s students, private sector scaling grants and innovation internships with private companies. These all serve to stimulate local and contextually relevant innovation, close the research-private sector divide and enhance job readiness among young professionals.
This focus area contributes to the following One CGIAR impact areas: