Uganda – FutureWater

Twiga is the Swahili word for ‘giraffe’, a keen observer of the African landscape. TWIGA aims to provide actionable geo-information on weather, water, and climate in Africa through innovative combinations of new in situ sensors and satellite-based geo-data. With the foreseen new services, TWIGA expects to reach twelve million people within the four years of the project, based on sustainable business models.

Africa needs reliable geo-information to develop its human and natural resources. Sixty percent of all uncultivated arable land lies in Africa. At the same time Africa is extremely vulnerable to climate change. Unfortunately, the in situ observation networks for weather, water, and climate have been declining since the 1970s. As a result, rainfall predictions in Africa for tomorrow have the same accuracy as predictions in Europe, ten days ahead. To realize the tremendous potential of Africa while safeguarding the population against impacts of climate change, Earth observation must be enhanced and actionable geoinformation services must be developed for policy makers, businesses, and citizens. New in situ observations need to be developed that leverage the satellite information provided through GEOSS and Copernicus (Open data/information systems).

TWIGA covers the complete value chain, from sensor observation, to GEOSS data and actionable geoinformation services for the African market. The logic followed throughout is that in situ observation, combined with satellite observations and mathematical models, will result in products consisting of maps and time series of basic variables, such as atmospheric water vapour, soil moisture, or crop stage. These products are either produced within TWIGA, or are already available with the GEOSS and Copernicus information systems. These products of basic variables are then combined and processed to derive actionable geo-information, such as flash flood warnings, sowing dates, or infra-structural maintenance scheduling.

The TWIGA consortium comprises seven research organisations, nine SMEs and two government organisations. In addition it uses a network of 500 ground weather stations in Africa, providing ready-to-use technical infrastructure.

FutureWater’s main role in TWIGA is centered around the use of flying sensors to map crop conditons, flood extent, and energy fluxes, complementing and improving data from in situ sensors and satellites. Furthermore, FutureWater is involved in innovative app development.

The Nile Basin Decision Support System (NBI-DSS) will provide the necessary knowledge base and analytical tools to support the planning of cooperative joint projects and the management of the shared Nile Basin water resources on an equitable, efficient and sustainable manner. FutureWater was asked to support this NBI-DSS and to undertake preliminary data collection and compilation.

Details

The developed data base has two main components: spatial data and point data. Regarding the spatial data the following data have been made available

Land cover
Soils
Vegetation Indices
Precipitation FEWS

These data are available over the entire Nile Basin and include a extensive set of attributes. Data have been quality controlled and is ready to apply in the DSS and can be used for various types of hydrological models.

The point data includes over 20 million records from various sources included global and local data sets. Data are stored in PostGreSQL. The data can be considered as the most complete hydro-meteorological dataset available for the Nile so far.

Climate change and variability affects countries’ economies and households through a variety of channels. Uganda’s 2010–2015 five-year National Development Plan (NDP) already recognizes that addressing the challenges of climate change is crucial to enhancing sustainable economic and social development. Most of the key economic sectors – such as forestry, energy and agriculture – will be affected by climate change and have recognized the importance of climate change and its effect on the national economy.

One of the key aims of the present study is to make an economic and social assessment of climate change impacts in Uganda covering a selection of the areas identified above, and to economically assess possible measures to adapt to these impacts to the period to 2050. The social and economic assessment will consist of the following steps:

Preliminary sectoral studies characterizing the impacts of current climate variability and the medium to long-term probable impacts of climate change, on the basis of the climate change scenarios;
An in-depth evaluation of the likely economic damages from climate change, building the analysis on downscaled climate scenarios, literature review and a broad consultations process;
The costs of adaptation and other important factors that determine the ranking of potential adaptation measures (notably, concerns with equity and risk). Social impacts in terms of loss of income, loss of employment and morbidity will be estimated for those sectors where such effects are likely to occur.

The Rwenzori Mountains National Park (RMNP) is a key natural resource, safeguarding drinking water for around 2 million people, and supplying water for a variety of industrial users including several hydropower and mining companies. These are key economic growth engines and major employers in the region and beyond.

The watershed services of the RMNP are currently undervalued and under increasing threat from climate change and increasing intensity of land use. Current land use practices, dominated by small holder farmers, are leading to loss of soil and reduce water quality and water quantity.The erosion and variable water flows puts at risk the reliability of the downstream services (hydropower and mining) and water supply.

World Wide Fund for Nature (WWF) has in the recent years recognized the strong links between conservation and sustainable use of biological diversity, and the eradication of extreme poverty. Currently WWF Uganda is implementing “Sustainable Financing of the Rwenzori Mountains National Park (SFRMNP) Project” with funding from the European Union (EU) and the French Funds for Global Environment (FFEM).

This project pilots a Payment for Watershed Services (PWS) scheme that should engage large, downstream users (corporations and utilities) that willingly contribute to a water conservation scheme as a way of shoring up their business investments. The goal of the pilot is to study the feasibility of the PWS scheme in the watersheds of the Mubuku and Nyamwamba rivers and supporting nature conservation and a healthy watershed that improves the livelihoods of landowners and provides a sustainable supply of the critical quantity and quality of water to downstream water users, to local communities as well as to industrial users, including the hydropower and mining sector.

To understand the value of the resources and what interventions are required to protect these resources, a study is required to map the resources, stakeholders, and drivers to behaviour change and management change in the study area.

Los países incluidos en las subcuencas de los lagos ecuatoriales del Nilo se enfrentan a una creciente presión sobre la tierra y los recursos hídricos, unida al rápido crecimiento demográfico. Por ello, la producción de alimentos es una de las principales preocupaciones y prioridades de los responsables políticos de la zona. El regadío y la mejora de la gestión del agua tienen el potencial de impulsar la productividad agrícola en la zona, que en la actualidad es casi totalmente de secano. El rendimiento de los cultivos de regadío es muy superior al de los cultivos de secano, lo que significa que existe un gran potencial para aumentar la producción de alimentos en la zona.

FutureWater, en colaboración con WaterWatch, evaluará el potencial de regadío de siete países del Nilo con el fin de colmar las lagunas existentes en la información del NBI y de los países miembros basada en el uso agrícola. Este estudio consta de varias etapas consecutivas, en las que la modelización hidrológica, el uso de datos obtenidos por teledetección, los análisis ArcGIS, los talleres de consulta y las reuniones constituyen el núcleo del proyecto.

Los objetivos específicos de este proyecto son:

Determinar el potencial de riego de los países propuestos teniendo en cuenta los recursos físicos de «suelo» y «agua», combinados con las necesidades de agua de riego determinadas por los patrones de cultivo y el clima
Proporcionar una evaluación preliminar de las posibles limitaciones medioambientales y socioeconómicas que deben tenerse en cuenta para garantizar el uso sostenible de los recursos físicos de la cuenca del Nilo
Indicar los recursos necesarios para la fase de preparación e inversión

Mapas

La evaluación del estudio del potencial de riego dio lugar a un mapa de idoneidad para el riego. Este mapa puede descargarse como jpeg o como GeoTIFF. Haga clic en los enlaces siguientes para descargar el formato adecuado: