In the frame of the Sustainable Development Goals (SDGs), the International Community has renewed its commitment to reach sustainable development by 2030 that encompass multiple aspects of human well-being. 17 goals were defined and include the environment, water and sanitation, energy, poverty, health, gender, economic growth among others  . This integrated view of development is not new, and has shifted from the assessment of the economic growth  to an integration of additional social and environmental dimensions like inequality (e.g.  ) education/literacy, and the WSS access (e.g.  or gender  . Composite indicators have been also built to provide synthetic measures of several aspects of development at national scale: for instance, the Inequality-adjusted Human Development Index (HDI)  ), the Multidimensional Poverty Index (MPI)  or the Employment-adjusted Human Development Index  . (Gain et al., 2016) developed a global water security index associated socio-economic aspects and biophysical indices to better assess the water sector, to contribute to the framework of the SDGs  . Holden et al. (2017) assessed and cross-analysed three aspects to measure sustainable development: “the human needs, ensuring social equity, and respecting environmental limits”  .
Following such trend to understand development through more than one aspect, this study extends the multi-dimensional approach conducted for year 2004  . It aims at finding patterns and trends in country sustainable development over the period 1995-2010 from the point of view of the water sector. Indeed, considering the 17 sectors of the SDGs together would have been complex. The water and sanitation sector is a transversal sector that interacts with other sectors, such as education, health, agriculture, energy, environment/biodiversity and general economy, is estimated as a good entry point-proxy to assess country development. In addition, it has been included the Official Development Assistance flows (external financial support) which can be a significant amount depending on the recipient country  . The main objective is to analyse the country evolution considering several aspects: living conditions such as access to Water and Sanitation services, urbanisation and the housing conditions, the access to basic health care, the balance and estimation of water uses per main economic consumers, and the official development flows (general and water sector specific flows). This study focuses on developing countries where development is key to improve the living conditions of a significant part of the population.
The WatSan4dev database, developed by the Joint Research Centre in 2012  , has been enhanced by adding and pre-processing the data series from 1995 to 2010 with a 5-year interval  . 103 developing countries are selected from Latin America, Africa and South Eastern Asia. These profiles are the framework to observe the country evolution over 1995 to 2010 and are characterised around 5 thematic factors: Human Development and Poverty (HDP), Agriculture pressure on water resources (AP), Official Development Assistance (ODA Composite Index), Water Resource (WR) and Governance (GOV).
Therefore, this paper presents the data sources and selected variables that are included in this study (Section 2), the methods and pre-processing performed to establish the coherence of the dataset (Section 3). It finally presents the results with the 5 country profiles that define different countries behaviours related to development, water resources management, governance and donors support (Section 4). The year 2005 is taken as reference for building the profiles because of being most complete and robust dataset as well as enabling a coherence validation with  .
2. Data Description
The variables and data were collected from providers that are internationally mandated institutions (the World Bank, the OECD or the FAO). They delivered worldwide datasets at national scale for which validation and harmonisation processes were carried out. Validation processes performed by each data provider are described in  . The selected datasets were processed to set up the WatSan4tDev database, developed by the Joint Research Centre (JRC) of the European Commission (EC). From this database, 22 variables are selected related to the environment, economic and social development, governance and financial aid flows in developing countries and collected for years 1995, 2000, 2005, and 2010. The list of data gathered, their unit and source are detailed in Table 1. Note that Total Water Renewable Resources (TWRR), precipitations (Precipit), and percentage of land under risk of desertification (Desert risk) are considered as constant variables over the 15 years period.
As in  , no independent territories, developed countries, countries with less than 150,000 inhabitants and the countries with more than 35% missing data for the set of variables selected were not considered in this analysis. Eastern European countries and Central Asia are also excluded because focusing on Africa, Latin America and South-East Asia.
There is little information about uncertainty of data, only standards errors for Worldwide Governance Indexes (WGI) (between 4% and 7% in average) are given by observations (WGIs database). The data used take into account updates made by the data providers until May 2015.
Missing data rate is a significant constraint for several data series, therefore, an imputation process is setup to complete datasets with realistic values. Prior, the variables were processed using linear regression to adjust the outlier values. The multi-variate imputation software Amelia II which uses EMB algorithm has been used  . Additional and manual verifications were made based on the data available in previous or consecutive years and specific literature. Therefore, this data is to be used only for qualitative analysis, quantitative analysis should be avoided because of the heterogeneity of the data collection and computation methodologies.
A combination of methods is applied to the 22 variables, 103 countries and 4 years (1995, 2000, 2005, and 2010) as detailed in  . It consists in, first, performing a Principal Factor Analysis (PCA) to reduce the number of variables into coherent thematic principal factors  , then clustering the countries observations with 2005 as reference year to observe country change across profiles.
Table 1. Variables used in this study, unit and source. FAO stands for Food and Agriculture Organization, WB for the World Bank, OECD for Organisation for Economic Cooperation and Development, JMP for Joint Monitoring Program, WHO for World Health Organisation, UNICEF and UN HABITAT for the direction related to Children and housing/Urbanisation matters respectively f of the United Nations.
2005 was chosen as reference year because of being most completed and thus, robust dataset.
In more details, the PCA was first performed on the 2005 dataset with the projection as supplementary observations of the datasets for 1995, 2000, 2010 into the multidimensional 2005 space. This ensures the consistency of the comparison and the clustering of observations across time and makes the change of country profile observable and measurable against 2005. The spearman rank-order correlation is used as the dataset satisfies its two assumptions: 1) it does not required normal distributions; and, 2) the two-by-two variable relationships are monotonic. Varimax rotation is applied to maximize the variance of the loadings (Abdi, 2003). The first 5 main factors selected provide a simple and easy interpretable structure that is the data baseline of the clustering next step. The factors are selected because having an eigenvalue above 1 and at least two variables with an above 0.5 factor load   .
The main two clustering methods used are the Agglomerative Hierarchical Clustering (AHC) and the k-means clustering (k-means)   . The AHC is used in a first step, as a discovery tool to define the number of clusters that suits the dataset. The AHC analysis was enough stable, indicating that the appropriate number of clusters is 5 clusters  .
The k-means is then applied to 2005 observations setting 5 clusters because it provides more sharped cluster  . The observations of 1995, 2000 and 2010 were distributed, in a second step, into the 2005 clusters according to the shortest Euclidian distance with each cluster centroid (Appendix 2). In this way, it is easy to observe the progress of the countries along the period 1995-2010.
4.1. Five Thematic Factors
The five first factors represent 73.11% of the whole observed variance and the Bartlett’s sphericity test confirmed the PCA significance with a computed p-value (<0.0001) lower than alpha level of 0.05 (Appendix 1). Next paragraphs summarized the meaning of the main factors defined for 2005 that are the reference values for building country profiles.
Factor 1 Human Development and Poverty (HDP)
The first factor (HDP) gathered the variables that characterize human development of a country such as access to basic health or education, and the living conditions (income, urbanization, access to water supply or sanitation). HDP is logically organised with the “development variables”, namely Water supply (WS) and Sanitation(S) access, the urbanization level (Urban pop), the education level (School enrol, School G/B), inversely correlated to “poverty variables”, namely Malaria prevalence (Malaria), Children under five years mortality rate (Child Mortal-5), Proportion of the urban population leaving in slums (% Slums)  . The higher the value on the HDP factor, the higher the country development.
Factor 2: Agriculture pressure on water resources (AP)
The second factor (AP) illustrates the balance between the water consumption and uses: agricultural usage that competes with domestic and industrial consumption. The total amount of water withdrawals (Tot_with) is strongly driven by agriculture water demand  . Therefore, the domestic (Dom_with) and industrial water demands (Ind_with) are negatively correlated with the irrigation practice (% irrigation) and the total withdrawn water (Tot_with). This dominance of agricultural water demand remains true for the great majority of countries and for the whole period. The AP indicates the level of this domination of Agriculture as main water consumer. This means that the lower the value in AP, the higher percentage of the water resources is dedicated to Industrial and/or Municipal sectors.
Factor 3: Official Development Assistance Composite Index (ODA CI)
The third factor (ODA CI) gathers the variables measuring the Official Development Assistance provided by the donor community to recipient counties. ODA variable is the financial flows invested by donors covering any sectors of cooperation (such as health, education, economic support…) while ODA-WSS considers only flows dedicated to the Water sector. The higher the value on ODA CI, the bigger the external support provided to the country.
Factor 4: Water Resources (WR)
The fourth factor (WR) gathers the variables related to the estimation of Water Resources available (WR), namely the total water renewable resources (TWRR), the average precipitations (Precipit), and the percentage of the territory under desertification threat (Desert risk). The variables TWRR and Precipitation are logically negatively correlated to desert risk. Therefore, the more the value on the WR factor, the higher the estimated amount of Water Resources.
Factor 5: Governance (GOV)
The fifth factor (GOV) represents the governance variables (loadings > 0.6), namely Political Stability and Absence of Violence (WGI-PSAV), Government Effectiveness (WGI-GE), and Voice and Accountability (WGI-VA). The higher the value in GOV factor, the better the governance.
4.2. The Country Profiles in 2005 Reference Year
Applying clustering methods, 5 main groups of countries were defined (Section 3). Their respective average behaviour according to the HDP, ODAC CI, GOV, WR and AP thematic factors is shown in Figure 1.
Profile 1: Counting on its own capacities
First profile is mainly characterized by a very low centroid value on ODA CI (−1.151 centroid loading), indicating a less investment from donors into these countries, and the slightly highest AP value (0.401), indicating the dominant water consumption of agriculture. The central observation is Peru, while Myanmar and Nepal are in periphery of this cluster. Many of these countries are, indeed, emerging countries of Latin America and Asia. They received less ODA as in previous decades. The good value in HDP (0.316 centroid loading) is also associated to a relatively good level of GOV (0.561 centroid loading). These countries benefit, in addition, from a context of availability of Water Resources (0.606 centroid loading).
Figure 1. Centroid value according to the 5 thematic factors HDP, GOV, ODACI, WR and AP for each country profile. The central objects are for cluster 1-Peru, cluster 2-Oman, cluster 3-Nicaragua, cluster 4-Zambia, and cluster 5-Burundi.
Profile 2: Governance black spot
These countries present a profile characterized by the highest factor loading on the HDP (1.011 centroid loading) but a very low level of GOV f (−0.717, centroid loading). The positive loading on AP (0.257 centroid loading) means that the amount of water dedicated to agriculture is slightly dominant compared to domestic/municipal and industrial uses together. Industrial water use is very limited or marginal (0% to 9%). These countries are situated in dry regions (mainly Maghreb and Middle East), therefore, their negative loadings on the WR (−1.233). The factor loading on ODA CI is close to 0 (−0.041) that indicates a moderate/low external financial input in these countries. The central observation is Oman while Djibouti, Jordan and Sudan are in periphery of this cluster.
Profile 3: Development boosted by external aid and water abundance.
The third profile is characterized by high values on WR (0.998 centroid loading) and ODA CI factors (0.879 centroid loading). The majority of the countries are in South East Asia, Central America and Caribe. They receive a relatively high flow of ODA per capita because of being target countries like Bhutan and Central America or lightly populated countries such as Fiji and Sao Tome & Principe. Their level of governance is significant with a central factor loading closed to 0 (0.055) that may explain the high level of financial support of Donors  . The centroid of AP factor is also positive (0.334) implying the dominance of the agricultural demand (around 60%) versus the domestic and industrial needs. The central observation is Nicaragua while Laos, Bangladesh and Guyana is in the periphery of the cluster.
Profile 4: Good governance and essential external support
This fourth profile is characterised by a poor HDP (−1.007 centroid loading) similar to profile 5 but in a context of water scarcity (−0.637 centroid loading). Despite this state, the governance level is relatively high (0.925 centroid loading) corresponding mainly to the most stable, democratic and efficient African countries in 2005 such as Zambia, Namibia, Lesotho, or Senegal. Therefore, the ODA flows is at substantial level with a 0.307 centroid loading. The country closest to this centroid is Zambia while Madagascar, Cape Verde and Botswana are in periphery of this cluster.
Profile 5: Primary material consumption
The fifth profile shows a very low HDP (−0.856 centroid loading) and a very low level of AP (−1.025 centroid loading). The latter means that water for agriculture is below 50% of the water withdrawn. Water resources are mainly dedicated to domestic and/or industrial uses. These countries mainly present a weak agricultural sector. The water consumption is divided between domestic/municipal use (dominant in Comoros, Equatorial Guinea, and Gabon) and/or a strong natural/primer resources sector (like in Congo, Cong Dem, Sierra Leone, Nigeria, Guinea). In addition, these countries are subject to very poor governance at various levels: corruption, state weakness or authoritarian government...etc. Therefore, a very low value of GOV (−0.856 centroid loading). Burundi is closest to the centroid of this cluster and no countries are in the periphery.
4.3. Trends over 1995-2010 Period
4.3.1. Trends by Thematic Factors
Figures 2-5 describe the change between factor loading in 1995 and 2010 of each thematic factor (except WR which is considered constant) enabled by the fact that all observations are projected in the same space.
Figure 2 shows the HDP changes between 1995 and 2010. HDP globally progresses for all the countries no matter from which continent. Only Bahrain has a
Figure 2. HDP difference change between 1995 and 2010 per country: All countries, except Barhain, benefited from a positive trend in term of human development between 1995 to 2010, even for the poorest.
Figure 3. GOV difference change between 1995 and 2010 per country. The pattern of country governance trends covers multiple situations: from a low level of governance that degraded (like Yemen), or on the contrary, that improve a lot (like Rwanda). Countries with relatively good governance in 1995 show a lower magnitude in change (both negatively and positively) like Argentina, South Africa Botwana or Namibia.
Figure 4. AP difference change between 1995 and 2010 per country. The cloud of points is more concentred, indicating slower change trend. The countries form profiles 1, 2 and 3 have an AP driven by the Agriculture activity and water demand.
slightly lower level (−0.0272), since it was already in the highest HDP levels. In this methodology, the poverty alleviation is understood as an economic assessment but also includes access to basic health, education for both sexes, decent housing
Figure 5. ODA CI difference change between 1995 and 2010 per country. The countries from profiles 1 and 2 mainly received less or stable amount of ODA over the period.
conditions in urban and rural conditions. This global positive trend in terms of poverty alleviation was internationally highlighted in particular by the Millennium Development Goals report in 2015  . Laos, Cambodia, Tanzania, Gambia and Sri Lanka are the top 5 countries which progressed the most over the 15 years. Note that these good progresses are associated to their low initial HDP level in 1995.
The evolution of GOV factor (Figure 3) ranges between [−1.6, +1.6]. The governance level is volatile in developing countries and subjected to quick changes (government or military coup etc.). The rate of change is also depending on the initial level of governance. A country with a good governance is most probably having a slow or negative evolution rate while a country going out years of civil war is expected to show good rate while recovering from this crisis. Zimbabwe, Fidji and Cote D’Ivoire are the top 3 countries where governance decreased the most. This negative trend is probably due to the Agrarian reform in Zimbabwe in 2000  , a military coup in Fiji in 2006  and political/ military crisis in Ivory Coast during 2002-2007 period  .
The changes in AP (Figure 4) are concentrated around [−0.5, +0.5], and reflects mid-term/long-term phenomena. The most important positive changes are mainly due to the increment of water dedicated to domestic/municipal uses, a phenomenon that accompany the extension of WSS coverage and urbanization processes. However, agriculture remains in the great majority of countries, in development or developed, the main consumer of water resources. Gambia, Haiti and Dominican rep have seen the very dominant agricultural consumption (>88%) reduced in favour of a significant domestic/municipal demand (between 18% - 45%). In the case of Gambia and Dominican Republic, the tourism activity development may be a reason of this change. The new assessment made by FAO of the water withdrawals by sector in 2015 can complement this analysis.
The ODA CI flow can show fluctuations from year to year and therefore, this factor shows a high range of changes (Figure 5). The top 3 countries are Liberia, Lebanon and Haiti during this period. The reasons of ODA provision are very much linked to donor motivation(s) that is a topic discussed in the literature: e.g. relationships with governance  , with former colonisation relation  or cooperation and geopolitical strategy  .
4.3.2. Changes of Profile over 1995-2010 Period
Understanding the change of cluster by the selected countries aims at quickly catching what is the medium term evolution of developing countries according to these five key factors. The longer the observation period, the better for the trend analysis.
Before going into the details of profile shifts, an average trend is analysed looking at the centroid country per profile.
The centroid country evolution
As average of profile 1, Peru saw its HDP value progressing steadily (from −0.041 to 0.34) together with the GOV (from 0.161 to 0.830). This development is associated to a decrease of the share of the agricultural water demand, potentially due to the development of the domestic demand ongoing with the access to water supply service.
As average of profile 2, Oman is characterised by a degradation of GOV (from 0.263 to −0.228) associated with a decrease of ODA (from −0.407 to −0.863). Despite this, the HDP value globally increased (from 0.802 to 1.38) over 1995-2010 period.
As average of profile 3, Nicaragua appears to follow the same pattern as Peru except on what concerns GOV that was already low and degraded over the period (from −0.387 to −0.691).
As average of profile 4, Zambia showed a very low level of HDP in 1995(on contrary of Profile 1) that improved significantly (from −1.531 to −1.222) during the 1995-2010 period. Remaining poor countries in 2010, the perception of governance was initially good and even progressed over the period (from 0.687 to 1.24).
Finally, Burundi, as average of profile 5, is a poor country that improved its HDP value (from −0.944 to −0.578) similarly to profile 4. Its level of GOV remains poor despite an improvement (from −2.250 to −1.34). Its specificity is the negative value in AP indicating a less dominant agricultural water demand, decreasing over the 1995-2010 period.
The number of countries changing cluster at least once over the whole period 1995-2010 is 22 out of 103 countries (21%). This small change rate was expected as the factors mainly measure mid-long term phenomena such as access to education, health, governance framework, level of urbanization, living conditions, etc. In details, 5 are short term changes while the others (16%) are potential medium term changes (Table 2).
The medium term changes
The analysis of country evolution will be focused on changes to or out of profile 4 and 5, to limit the length of this paper. These two profiles are considered most disadvantaged and gather most of the poor countries. The identification of roots of each change would need specific investigation in each specific country. Note that the group of countries in profile 2 remain stable over this 15 years period.
Changes to or out of profile 5
Several countries moved out of the profile 5 to: 1) profile 3 like Gabon, Haiti, Rwanda and Sierra Leone; 2) profile 4 like Eritrea, Guinea Bissau; 3) Papua New Guinea, Ivory Coast and Chad moved from others profiles to profile 5.
Gabon (profile 3 in 2010) already is in periphery of the profile 5 in 2005 showing a minimum and degrading governance (from 0.586 in 1995 to 0.271 in 2010), and a higher value in HDP than the average (around 0 HDP loading). The reason of this change between 2005 and 2010 is the increment of HDP, combined with a significant increase of ODA (less than 7 USD$ per cap in 2005 to in more than 66USD$ in 2010). The better HDP indicates either an increase of income per capita, an extension of access to basic services, and/ or a reduction of mortality and disease prevalence.
Haiti (profile 3 in 2010) moved out profile 5 because of a spectacular increase of global ODA (from 45USD per cap in 2005 to 309USD per cap in 2010), certainly in support to Haiti recovery after the earthquake in January 2010. However, this change is to be taken with caution as the distance of Haiti 2010 observation with centroids of both profiles 3 and 5 are similar. Therefore, there is a significant probability that Haiti will move back to profile 5 as soon as the ODA level will drop again to 1995-2005 levels, since GOV values remained close to those ones of profile 5.
Rwanda’s shift (profile 3 in 2010) is due to a continuous progress of HDP and GOV factors with the support of increasing ODA flows. In details and for the whole period, values of GOV factor steadily increased from −1.683 to −0.328 and
Table 2. Medium term changes across profiles for the 1995-2010 period.
from −0.957 and −0.07 on HDP factor and, associated with an increment of ODA CI loading from 1.087 in 2005 to 1.878 in 2010. These trends can illustrate well the recovery of Rwanda from the civil war that ended in 1994.
The case of Sierra Leone (profile 3 in 2010) is similar to Rwanda with a progress of HDP and GOV supported by an increase of ODA flows from 2000. Sierra Leone started its recovery from a civil war in 2002/2004 as shown, for instance, by the already better value in GOV in 2005. The flow of ODA greatly increased from 46USD in 2000 to 81USD per cap in 2010, while ODA dedicated to WSS tripled (from 3.3 million 2007-constant USD in 2004 to 13.5 million).
Papua New Guinea (PNG) belongs to profile 5 since 2000. Note that PNG was already in the periphery of profile 3 in 1995 (with a distance to the centroid of 2.13) showing lower HDP and AP values than the average behaviour of profile 3. The change of cluster is mainly due to a decrease of HDP between 1995 to 2000  and an additional decrement of AP already low value. The degradation of its governance (from positive to negative values) over the whole period keeps the PNG in profile 5 since 2000.
The shift between profile 4 and 5 is due to the evolution of two factors among AP, ODA CI and GOV factors as the countries included in these 2 clusters are the poorest with the lowest HDP values.
Ivory Coast and Chad felt into profile 5 during the 2000 to 2010 period because of a decrement of GOV and, in parallel a decrement of AP value. The decrease of governance is certainly due to security degradation and political troubles (e.g. political crisis/violence in Ivory Coast in 2002  and from 2005 to 2009 in Chad). The reinforcement for municipal and/or industrial sector share may rather highlight a degradation of agriculture activities (to be specifically analysed for these two countries) and thus, water needs during that period.
Since 2000, Guinea-Bissau is in profile 4 because of an increase of GOV accompanied by a positive external support flows (in average above 0.5 ODA CI loading) being in the periphery of the cluster. Eritrea also moved to profile 4 since 2000 because a decrement of AP toward an increasing share of water used for agriculture activities (AP values becoming positive in 2005 and 2010). Eritrea also benefited of an increasing external support for the period 1995 to 2005 (ODA CI values becoming positive in 2005) reaching a level closer to ODA value of profile 4.
Changes to or out of profile 4
Madagascar and Nepal shifted from profile 4 to profile 1 while South Africa moved in the opposite direction. Bhutan belonged to profile 4 in 1995 before shifting to profile 3 in 2000. Finally, Swaziland belongs to profile 2 since 2005.
Since 2000, South Africa belongs to profile 4, despite a HDP and limited ODA CI which are more suitable to profile 1. The reasons of this shift are the slight increases of AP and GOV in a context of water scarcity, making South Africa nearer the profile 4. The negative and decreasing value in AP illustrates the development of municipal and domestic water demand (around 30%). Agricultural water use is still dominant but no more exclusive. The improvement of governance is mainly related to the civil freedom improvement and the reduction of political instability and violence, in particular initiated with Nelson Mandela’s presidency in 1994.
Madagascar (Profile 1 since 2010) remains in the periphery of profile 1 in 2010 keeping a close distance with profile 4 (2.256 distance with profile 1’s centroid against 2.482 with profile 4’s centroid). Madagascar shows a particularity in AP factor with a very high value dedicating almost all the water withdrawn to agricultural purposes; having no industries and few water withdrawn specifically for domestic/municipal demand. The shift from profile 4 to 1 is mainly due to a drastic decrease of GOV from 1.503 to 0.209 since high governance is a strong characteristic of profile 4. The three WGI variables measuring the political stability, the civil freedom, the government effectiveness and accountability show a significant degradation of governance since 2005. This shift implied no big increase of human development, with progresses rather slow and steady over the whole period.
Nepal (profile 1 since 2000) dropped in both GOV and ODA CI factors. The GOV value decreased from 1995 to 2005 while ODACI mainly dropped from 1995 to 2000. These decrements are probably due to the internal conflict between the Government of Nepal and the Communist Party of Nepal (Maoist) between 1996 and 2006  . This is associated with a reinforcement of its agriculture orientation, continuous small improvement of HDP in a context of low ODA flows (24USD per cap in average). These have led to Nepal to be statistically closer to profile 1 average behaviour since 2000, but remaining in the periphery of this profile.
Swaziland has a specificity because in the periphery of both profiles 2 and 4 with similar distance with the two centroids (e.g. 2.069 with profile 2 and 2.083 with profile 4). Its poor level of development and its relative water scarcity fit rather the profile 4 characteristics. The negative governance and an ODA limited value are more suitable to profile 2. The AP average value diverges from the two profiles (fitting better profile 1). Therefore, the position of Swaziland is found original. The shift to profile 2 observed in 2005 is mainly due to slight decrements of GOV and ODA CI in 2005-2012.
Bhutan’s shift (profile 3 in 2000) is due to an increment of ODA CI and HDP. The ODA flows to Bhutan increased from 102 USD per cap in 1995 to 182 USD in 2010. This is associated to a concomitant increment of the HDP value. Note that WR level of Bhutan was already diverging from profile 4 average with a relative abundance of water resources. Therefore, a specific country analysis could be interesting to explore the reasons of this specificity.
Short term changes
Costa Rica, Dominican Republic, Panama balanced between profile 3 and 1 while Zimbabwe balanced between profile 4 and 1 over the period. Bolivia belongs to profile 4 expect in 2005 when it is classified in profile 3.
Costa Rica and Panama have exactly the same trends over the whole period, belonging first to profile 3 in 1995, moved to profile 1 in 2000 and 2005; and finally, are back to profile 3 in 2010. Dominican Republic shows the exact opposite trend, belonging first to profile 1 before moving to profile 3 and be back again to profile 1. These shifts between same two profiles are due to the fluctuations of ODA financial flows in these recipient countries and do not represent a structural change in their development. When the ODA CI shows a positive value, these three countries belong to profile 3 characterized by high level of ODA. Negative values in ODA Ci move these three countries to profile 1. Such fluctuations of financial flows question the purpose and the medium-long term strategy of donors in recipient countries    .
Zimbabwe belongs to profile 4 in 1995 and 2010 being nearer to its average behaviour (the Euclidian distance being inferior to 1.3). Zimbabwe shifted to profile 1 in 2000-2005 period certainly because Zimbabwe went through trouble time in 2000-2008 period  . This implied a drastic drop of 2 factors out of 5: the ODA and GOV making it temporary nearer to profile 1 (still in the periphery of profile 1). The initiate of the recovery since 2008 can be first observed on ODA value, while GOV remains unchanged at a poor level in 2010.
Bolivia belongs to profile 4 over the whole period except in 2005 where Bolivia moved to profile 3. This temporary classification is due to a drop of governance while the ODA flows slightly decreased; fitting better the profile 3.
In conclusions, these temporary shifts (5%) illustrate the difficulty to cluster in a simple and understanding way, complex behaviours of countries toward their development. Not all countries fit well in one of the 5 profiles however, the number of cases remains minor.
With regards to the methodology and the datasets several remarks are to be made  . First, the quantity and completeness of data constraint the accuracy and interpretation of this multivariate analysis. Therefore, only quantitative interpretation is enabled. Since the period is relatively short and introduces uncertainty in the duration of the change, the parameters to analyse are ODA CI and GOV factors because being the most responsive to short term events impacts (e.g. civil wars, natural disaster…). Therefore, a minimum of 30/40 years period would already improve the quality of the interpretation of country long term evolution, in particular for HDP and AP factors. The developed countries were excluded in this study. The main reason stands in the very different levels of economic development and access to basic services between developed and developing world. As a consequence, making such a global analysis will make less visible the differences within developing countries and mainly highlight the gap between developed and developing countries. Such approach would be useful in the case of a research aiming at assessing this gap.
The interest of WR factor can be improved by including water quality indicator or climate variability trends. In such case, it is expected to strength the relationship between country development and availability of water resources necessary to ensure it. This would be more interesting as the climate change affects the spatial and temporal distribution but also the amount of water available in particular in the sub-Sahelian Africa. In developed countries, the quality of freshwater is already a key issue subject to policy regulation. In the developing world, it is becoming a growing issue due to the lack of treatment in a context of demographic growth and high urbanisation  .
In addition, the AP is less discriminated across profiles if compared with the pilot study for 2004. In fact, Profiles 1 to 3 show similar behaviours, with a majority of water resources dedicated to Agriculture (>60%) confirming its strong pressure on these resources. This similarity is due to the missing variable “water use intensity in agriculture” that measured for 2004 the water efficiency of agriculture practices. Such variable allowed. This variable, together with irrigation variable, allowed to refine the analysis of agriculture dominance providing insights on the water-efficiency and productivity of the agricultural sector (from intensive agriculture using irrigation to less productive one mainly with rain-fed crops). This is to be noted that the irrigation practices are limited in the developing world and occurs almost exclusively in countries from profiles 1, 2 and 3 (mainly Latin American, MENA and South East Asian countries).
The AP is in this study focused on water resources uses however, a reinforcement of this factor could be done opening it toward a better evaluation of the agricultural sector as a whole. In fact agriculture sector is very linked to the water sector and the development of countries. In particular, it could be explored how to evaluate the intensivity of rainfed agriculture.
This analyse of cluster changes illustrates a key aspect: the diversity of the developing countries according to these 22 variables makes the five profiles fitting well or roughly each country situation. The reduction into 5 factors is a mean to reduce this multi-dimensional space and support the clustering of observations. The multiplicity of status and evolution is reflected by setting of several countries in between of two profiles, or distant from the average behaviour of the profile. This is, for instance, the case of Swaziland, Madagascar, South Africa, mentioned as in periphery or in between two profiles. The advantage of such clustering around few and understanding factors and profiles is to ease the overview of 103 developing countries, the identification of similar development behaviours (or on the contrary specific cases) and potential changes. This broad picture is a useful basis to orient the deepening of the analysis or to identify weakest countries according to one or several factors of interest.
Sustainable development is an international priority and countries are committed to the Sustainable Development Goals to be reached by 2030. As sustainable development is complex, the approach of this study was to analyse country development through the following factors: water resources availability and uses, the economic and social conditions, Official Development Assistance and governance context of the country.
This study performed a cross-cutting analysis on 22 indicators that represent environmental, socio-economic, governance and financial aid flows aspects. It considered a 15-year period with 4 years: 1995, 2000, 2005 and, 2010. Since  detailed the methodology applied to analyse this multi-variate dataset, this paper focused and analysed the trends according to 4 out of the 5 thematic axes: Human Development and Poverty (HDP), Agriculture pressure on water resources (AP), Official Development Assistance (ODA CI), a measure of Governance (GOV). Water Resources (WR) is estimated constant over this 15 years period, climate change impacts on Water Resources are generally observable on a longer period (minimum 30 years). Applying clustering methodologies, five reference profiles were identified and based on 2005 dataset which is the most complete dataset. The observations for 1995, 2000 and 2010 were in second step distributed among these profiles. Profile 4 and 5 are the poorest country profiles and profile 5 the less advantaged one.
In summary, this paper aimed at analysing the evolution of countries toward sustainable development and better water resources management. Over the 1995-2010 period, the HDP has progressed in all countries (expect Bahrain). GOV and ODACI trends show more diversity with positive and negative evolutions. AP remains globally driven by agriculture water use for the large majority of countries. AP decrement is generally due to the increase of the water dedicated to domestic-municipal sector. 16% of countries moved out a reference profile and are considered mid-term changes, while short term changes (5 cases) are due to the specific position of these countries between two profiles.
The main output of this 15-year analysis is that 22 countries changed cluster on this period and, 17 of these changes can be considered as mid-term changes. This is in line with the nature of the processes and reforms required for a country to improve its development, which correspond to long term efforts. A short majority of these changes (10 out of 17 countries) moved out of the most disadvantaged profiles to reach profile 1, 2 or 3. Out of these changes, 6 were due to the fact that the country of was already in the cluster periphery, showing divergences with its central behaviour. This highlights the diversity of country situation and therefore, the difficulty to define profiles that would fit well all countries. Most of the other observed shifts (11 countries) were due to an evolution of ODA CI and GOV factors. In fact, these factors are responsive to short term changes, such as political crisis or natural disaster that makes observable trends on this relative short period. This current limitation in the assessment of development will be overcome with an extended period (>30 years) as soon as the data will become available. The Official Development Assistance flow per recipient country fluctuates, in general, over the observation period. Note that a drop of governance is often associated to a drop of ODA  .
For future research, the analysis of country evolution will be complemented with variables to better assess the agricultural pressure and domestic water impact on the environment (water quality, resources efficiency of agriculture, etc.…) which will support the assessment of the sustainability of the country development. Additional variables measuring the climate variability will also reinforce the WR factor and enable the analysis of its impact on HDP. Inequality aspects and remittance flows can also be analysed to catch the quality and endogenous part of the ongoing development through, the enhancement of the measure of HDP and the complement of ODA, respectively.
The authors acknowledge that this paper is following up the methodological work done with Ms María del Rocío Rivas López, cited in reference (Rivas et al, 2016). This research benefited from the financial support of the Joint research Centre and European Commission through the project Mékrou.
Appendix 1 Main Five Factors Loading (PCA)
Table A1. Eigenvalues and factors loadings of the first five factors after varimax rotation and kaiser normalisation.
Appendix 2 Distribution of the Country Observation by Profile
Table A2. Clustering of country observations for 1995, 2000, 2005 and 2010 across the 5 defined profiles.