Engineering, economic, social sciences, geophysical, and integrated modeling studies have approached the assessment of water security in Central Asia (CA) in distinct ways. Different indicators and indexes have been introduced to assess the most vulnerable aspects of water use in this region. Until now, though, the suggested approaches are often represented in a fragmented manner, while the relevant indicators cannot fully attribute the vulnerability status of a country or on a regional level. This can result in diverging perceptions of the water security situation in policy dialogues, also affecting bilateral and multilateral relations among the countries in CA. In this study, we conduct a bibliometric review on the approaches and methods that directly or indirectly touch upon the water security perceptions in CA. We employ data mining techniques to explore trends in the conceptualization of water security in the region since the breakup of the Soviet Union by also identifying the water interests and priorities set by each country. The findings reveal that within the last decade, the water security-related studies have given much importance to technical and infrastructural means to protect human livelihoods against global environmental changes but also to foster economic growth. The water governance and management aspects are largely overlooked in favour of more techno-centric approaches. These findings are expected to clarify further the perception of the water security concept within CA by indicating the geophysical, institutional, and historical challenges that need to be met for a mutual understanding among the countries in the region.

Water security in Central Asia has been discussed by researchers and international organizations using hydrological, engineering, and modeling approaches. Various frameworks conceptualize water security through technical, socio-economic, and environmental aspects. This study attempts to identify the current trends of perceptions of experts about water security in Central Asian countries and Afghanistan as assessed through different regional and international experts with relevant knowledge and experience. The experts originate from diverse professional backgrounds like ministries, NGOs, international organizations, research, and academic institutes. The analysis was conducted through the Delphi approach, which has been widely used to identify experts' views by reaching a consensus on various subjects. The Delphi method assisted in the elicitation of experts' opinions about different water security dimensions in the overall region and each Central Asia country that have been suggested from the relevant literature. The two-round questionnaire was developed to infer the experts' views (round 1) on water security in Central Asia and then identify the agreement's rate with the initial findings (round 2). The results have shown that, while the relevant scientific literature gives priority to environmental factors, the experts emphasize water security's economic aspects. Experts suggested including transboundary challenges, legislative and institutional weaknesses in assessing water security in Central Asia and Afghanistan. Respondents highlighted the low effectiveness or ineffectiveness of the current institutions and mechanisms that dealt with water security-related issues in Central Asia and suggested strengthening water governance in the region.

The accessibility to freshwater sources and even allocation among different uses has become one of the most challenging sustainability aspects, especially in developing and transition economies, where a rapid increase in water consumption and poor management practices are more frequent. Water security has been adopted as a relatively new concept to encompass the relevant dimensions for the sustainable management of freshwater resources. Still, water security remains a rather abstract notion without well-established and measurable indicators. Central Asia (CA) is a region where water security was prioritized after the Soviet dissolution in 1991; however, several socio-economic, environmental, and transboundary aspects hinder establishing a common understanding. In this study, we have attempted to synopsize the concept of water security in CA as perceived by the views of water professionals with experience and expertise in the region. We applied a Delphi method and analyzed its outcome with clustering and regression analysis to better comprehend the agreement rate among water professionals on critical aspects of water security in the CA region. Our devised methodology can quantify the general agreement rate among professionals and assess the behavioural trends for iterative Delphi rounds. The findings suggest that the economic dimension of water security in CA is the ultimate priority for nearly all water professionals, while the national priorities for each CA county are not identical. The study anticipates identifying the elements needed for a commonly agreed water security framework in CA and offering methodological insights for the assessment of socio-ecological challenges.

<p>Water security in Central Asia (CA) plays a vital role because of transboundary river systems and interconnected infrastructure assets. Each CA country has differently contextualized the water security notion to serve national priorities and needs. Various scholars have studied and interpreted the concept of water security in CA through economic, environmental, social, and technical perspectives. Yet however, there is very little information on the perceptions of policymakers and water professionals that are directly engaged with the water policy discourse in the CA region.</p><p>In this regard, we attempted to identify policy makers and water professionals' views on water management and security aspects in CA.  A Delphi method was introduced through a two-round survey to decision-makers and water professionals to assess the rate of agreement on different water security dimensions that have been identified through a thorough literature review.</p><p>Namely, the dimensions associated with urban & household facilities, economic activities, environmental aspects and natural hazards were assessed, whereas different attributes related to each dimension were also considered. The first survey round explored the rate of agreement in the following six different sections: the proposed water security dimensions (1) and attributes (2) in CA; historical trends and dynamics of each dimension (3) and the implications on a policy level (4); the national priorities for each country (5); and the effectiveness of mechanisms dealing with regional water security issues (6).  The second round synopsized the initial findings by exploring whether a higher agreement rate was attained in each of the sections mentioned above.</p><p> Clustering analysis was applied to better identify the agreement rate and assess decision-makers and water professionals' behavioral patterns within the two-survey rounds.  A number of clustering techniques were tested out. Methods such as K-Medoids, Spectral, Hierarchical, and Agglomerative clustering, as well as the Affinity Propagation, were applied. Hyperparameters were chosen based on the observations of how well the clusters are formed, i.e., how similar the responses are within the cluster and how much they differ from other clusters. The clustering was applied to the whole range of responses, as well as separately on different sections of the surveys.  </p><p>The findings indicate that the clustering of all six parts did not clearly define separation and distinctive agreement rates in the first survey round. However, when the clustering was performed within specific sections, e.g., the national priorities in each country, behavioral patterns were revealed among respondents. The clustering trends among sections became more apparent in the second survey round.  Our preliminary findings indicate that a set of socio-demographic and professional-related features of the participants are aligned with the patterns of the clustering outcomes on water security priorities in CA. The study findings could identify the major challenges that policymakers and water professionals face being mutually addressed by improving water security dialogue in the CA region.</p>