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[[Africa Groundwater Atlas Home | Africa Groundwater Atlas]] >> [[Hydrogeology by country | Hydrogeology by country]]  >> Hydrogeology of Rwanda  
 
[[Africa Groundwater Atlas Home | Africa Groundwater Atlas]] >> [[Hydrogeology by country | Hydrogeology by country]]  >> Hydrogeology of Rwanda  
  
[[File:CC-BY-SA_logo_88x31.png | frame | This work is licensed under a [https://creativecommons.org/licenses/by-sa/3.0/ Creative Commons Attribution-ShareAlike 3.0 Unported License]]]
 
  
Rwanda is a small and quite densely populated country in the Great Lakes region of central Africa. It is also known as "The Land of a Thousand Hills". Rwanda has been a distinct entity from pre-colonial times. It was colonised by Germany in 1884 (as part of German East Africa), then by Belgium in 1916, before achieving independence in 1962. Ethnic tensions between the Hutu and Tutsi cultural groups led to periodic episodes of violence, including the 1994 genocide. In the aftermath of the genocide there was a period of reconciliation and justice with associated improvement in economic, health and social indicators.
+
'''This page has limited information and needs to be updated. If you have more information on the hydrogeology of Rwanda, please get in touch!'''
 
 
Tea and coffee cultivation are the major cash crops and growth agricultural industries, facilitated by Rwanda's climate and geography. Mining is a significant contributor to export income. The services sector has started to recover after the late 2000s recession, including banking and communications, and particularly tourism, which is now the main source of foreign income and is supported by government. This sector is boosted by the presence of mountain gorillas in uplands areas.
 
 
 
Rwanda has relatively high rainfall and both surface water and groundwater resources. Two major river basins cover Rwanda – the Nile and the Congo basins – and there are many lakes and wetlands. Groundwater is the main source of water supply in rural and some urban areas: in mountain areas from springs, and in other areas from boreholes.
 
  
  
 
==Compilers==
 
==Compilers==
  
'''Mr Francois-Xavier Tetero''', Rwanda Water and Forestry Authority
 
 
 
'''Dr Kirsty Upton''' and '''Brighid Ó Dochartaigh''', British Geological Survey, UK
 
'''Dr Kirsty Upton''' and '''Brighid Ó Dochartaigh''', British Geological Survey, UK
  
'''Dr Imogen Bellwood-Howard''', Institute of Development Studies
+
Please cite this page as: Upton & Ó Dochartaigh, 2016.
 
 
Please cite this page as: Tetero, Upton, Ó Dochartaigh and Bellwood-Howard, 2018.
 
  
Bibliographic reference: Tetero F, Upton K, Ó Dochartaigh BÉ and Bellwood-Howard, I. 2018. Africa Groundwater Atlas: Hydrogeology of Rwanda. British Geological Survey. Accessed [date you accessed the information]. http://earthwise.bgs.ac.uk/index.php/Hydrogeology_of_Rwanda
+
Bibliographic reference: Upton, K. & Ó Dochartaigh, B.É. 2016. Africa Groundwater Atlas: Hydrogeology of Rwanda. British Geological Survey. Accessed [date you accessed the information]. http://earthwise.bgs.ac.uk/index.php/Hydrogeology_of_Rwanda
  
 
==Terms and conditions==
 
==Terms and conditions==
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===General===
 
===General===
 +
  
 
{| class = "wikitable"
 
{| class = "wikitable"
 
|-
 
|-
|Capital city || Kigali
+
|Estimated Population in 2013* || 11,776,522
 
|-
 
|-
|Region || Eastern Africa
+
|Rural Population (% of total) (2013)* || 73.1%
 
|-
 
|-
|Border countries || Uganda, Tanzania, Burundi, the Democratic Republic of the Congo
+
|Total Surface Area* || 24,670 sq km
 
|-
 
|-
|Total surface area* || 26,340 km<sup>2</sup>  (2,634,000 ha)
+
|Agricultural Land (% of total area) (2012)* || 75.3%
 
|-
 
|-
|Total population (2015)* || 11,610,000
+
|Capital City || Kigali
 
|-
 
|-
|Rural population (2015)* || 8,029,000 (69%)
+
|Region || Eastern Africa
 
|-
 
|-
|Urban population (2015)* ||3,581,000 (31%)
+
|Border Countries || Uganda, Tanzania, Burundi, the Democratic Republic of the Congo
 
|-
 
|-
|UN Human Development Index (HDI) [highest = 1] (2014)*|| 0.4832
+
|Annual Freshwater Withdrawal (2013)* || 150 Million cubic metres
 +
|-
 +
|Annual Freshwater Withdrawal for Agriculture (2013)* || 68%
 +
|-
 +
|Annual Freshwater Withdrawal for Domestic Use (2013)* || 24%
 +
|-
 +
|Annual Freshwater Withdrawal for Industry (2013)* || 8%
 +
|-
 +
|Rural Population with Access to Improved Water Source (2012)* || 68.3%
 +
|-
 +
|Urban Population with Access to Improved Water Source (2012)* || 80.7%
 
|}
 
|}
  
<nowiki>*</nowiki> Source: [http://www.fao.org/nr/water/aquastat/data/query/index.html?lang=en FAO Aquastat]
+
<nowiki>*</nowiki> Source: World Bank
  
  
 
===Climate===
 
===Climate===
 
Rwanda's climate is classed as tropical savannah. Temperature does not vary significantly throughout the year but there are two distinct rainy seasons (February to May and October to December). Rainfall varies across the country, with drier conditions in the eastern savannah regions and much wetter conditions over the central plateau and western mountains.
 
  
 
[[File:Rwanda_ClimateZones.png | 375x365px |Koppen Geiger Climate Zones]][[File:Rwanda_ClimatePrecip.png | 375x365px |Average Annual Precipitation]][[File:Rwanda_ClimateTemp.png | 375x365px |Average Temperature]]
 
[[File:Rwanda_ClimateZones.png | 375x365px |Koppen Geiger Climate Zones]][[File:Rwanda_ClimatePrecip.png | 375x365px |Average Annual Precipitation]][[File:Rwanda_ClimateTemp.png | 375x365px |Average Temperature]]
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These maps and graphs were developed from the CRU TS 3.21 dataset produced by the Climatic Research Unit at the University of East Anglia, UK. For more information see the [[Climate | climate resource page]].
 
These maps and graphs were developed from the CRU TS 3.21 dataset produced by the Climatic Research Unit at the University of East Anglia, UK. For more information see the [[Climate | climate resource page]].
  
In Rwanda, rainfall data are collected by MeteoRwanda. More detailed information on rainfall at a catchment scale is described in the [http://www.environment.gov.rw/uploads/media/Rwanda_Water_Resources_Master_Plan_01.pdf Rwanda Water Resources Master Plan] (2014).
+
 
 +
 
 +
In Rwanda, rainfall data are collected by MeteoRwanda. More detailed information on rainfall at a catchment scale is described in the [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf Rwanda Water Resources Master Plan] (2014).
  
 
===Surface water===
 
===Surface water===
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{|
 
{|
 
|-
 
|-
|Rwanda is divided into two major river basins: the Nile in the east and centre, and the Congo in the west. Both are shared with neighbouring countries.  
+
|Within Rwanda are two major basins: the Nile and Congo basins, both of which are shared with neighbouring countries. Other smaller river basins include the Rusizi, Akanyaru and Akagera rivers (all shared with Burundi); the Akagera River (shared with Tanzania); the Muvumba River (shared with Uganda); and Lake Kivu and the Rusizi River (shared with the DRC). Some institutional arrangements are operational, either bilateral (Commission Mixte between Rwanda and Burundi) or regional (e.g. EAC, NBI, ABAKIR; these latter two specifically on water resources) (RNRA 2014).
  
Within the Nile and Congo basins in Rwanda, smaller river catchments include the Rusizi and Akanyaru rivers (shared with Burundi); the Akagera River (shared with Tanzania and Burundi); the Muvumba River (shared with Uganda); and Lake Kivu and the Rusizi River (shared with the DRC). There are many smaller lakes, rivers and associated wetlands. The Akagera River, and its tributary the Nyabarongo, are two of the main rivers, both part of the upper Nile basin.
+
Nine Level 1 surface water catchments have been classified for Rwanda (see [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf RNRA 2014], page 10).
  
Surface water resources, as other water resources in Rwanda, are managed by the [http://rwfa.rw Rwanda Water and Forestry Authority], previously the Rwanda Natural Resources Authority, which is affiliated to the [http://www.environment.gov.rw Ministry of Environment].  
+
Surface water monitoring is generally good for the large catchments, but station data often lack absolute topographic reference level; and discharge measurements are often absent or at best out of date. For small catchments, monitoring is less well established (RNRA 2014). Information on surface water resources in Rwanda is described in the [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf Rwanda Water Resources Master Plan] (2014). Surface water monitoring data are stored in the Rwanda Water Resources Information System (RWRIS), which is managed by the Rwanda Natural Resources Authority-Integrated Water Resource Management section (RNRA-IWRM).
  
Nine Level 1 surface water catchments have been classified for Rwanda (see the [http://www.environment.gov.rw/uploads/media/Rwanda_Water_Resources_Master_Plan_01.pdf Rwanda Water Resources Master Plan (RNRA 2014)], page 10).
 
 
Surface water monitoring is generally good for the large catchments, but less well established for smaller catchments (RNRA 2014). Monitoring data are collected and stored as part of the Water Management Information System. Data from 65 surface water monitoring stations is now available via the [https://waterportal.rwfa.rw/data/surface_water Rwanda Water Portal]. 
 
  
 
| [[File:Rwanda_Hydrology.png | frame | Major surface water features of Rwanda. Map developed from World Wildlife Fund HydroSHEDS; Digital Chart of the World drainage; and FAO Inland Water Bodies. For more information on the map development and datasets see the [[Surface water | surface water resource page]].]]
 
| [[File:Rwanda_Hydrology.png | frame | Major surface water features of Rwanda. Map developed from World Wildlife Fund HydroSHEDS; Digital Chart of the World drainage; and FAO Inland Water Bodies. For more information on the map development and datasets see the [[Surface water | surface water resource page]].]]
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|}
 
|}
  
 +
==Geology==
  
===Water statistics===
+
The geology map shows a simplified overview of geology at a national scale (see the [[Geology | Geology resource page]] for more details).
  
{| class = "wikitable"
+
More information is available in the report [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060018 UN (1988)] (see References section, below).  
| ||2000||2005||2014||2015
 
|-
 
|Rural population with access to safe drinking water (%) || || ||  ||71.9
 
|-
 
|Urban population with access to safe drinking water (%) || || ||  ||86.6
 
|-
 
|Population affected by water related disease || No data || No data ||No data || No data
 
|-
 
|Total internal renewable water resources (cubic metres/inhabitant/year) || || ||818.3||
 
|-
 
|Total exploitable water resources (Million cubic metres/year) || No data || No data ||No data || No data
 
|-
 
|Freshwater withdrawal as % of total renewable water resources ||1.128|| || ||
 
|-
 
|Total renewable groundwater (Million cubic metres/year) ||  || ||7,000 ||
 
|-
 
|Exploitable: Regular renewable groundwater (Million cubic metres/year) || No data || No data ||No data || No data
 
|-
 
|Groundwater produced internally (Million cubic metres/year) || || ||7,000||
 
|-
 
|Fresh groundwater withdrawal (primary and secondary) (Million cubic metres/year) || || || ||
 
|-
 
|Groundwater: entering the country (total) (Million cubic metres/year) || No data || No data ||No data || No data
 
|-
 
|Groundwater: leaving the country to other countries (total) (Million cubic metres/year) || No data || No data ||No data || No data
 
|-
 
|Industrial water withdrawal (all water sources) (Million cubic metres/year) || ||20.5|| ||
 
|-
 
|Municipal water withdrawal (all water sources) (Million cubic metres/year)  || ||61.4|| ||
 
|-
 
|Agricultural water withdrawal (all water sources) (Million cubic metres/year) ||102 || || ||
 
|-
 
|Irrigation water withdrawal (all water sources) <sup>1</sup> (Million cubic metres/year) || No data || No data ||No data || No data
 
|-
 
|Irrigation water requirement (all water sources) <sup>1</sup> (Million cubic metres/year) || || || ||
 
|-
 
|Area of permanent crops (ha) || || ||250,000||
 
|-
 
|Cultivated land (arable and permanent crops) (ha) || || ||1,400,000||
 
|-
 
|Total area of country cultivated (%) || || ||53.15||
 
|-
 
|Area equipped for irrigation by groundwater (ha) ||85|| ||  ||
 
|-
 
|Area equipped for irrigation by mixed surface water and groundwater (ha) || No data || No data ||No data || No data
 
|}
 
  
These statistics are sourced from [http://www.fao.org/nr/water/aquastat/main/index.stm FAO Aquastat]. They are the most recent available information in the Aquastat database. More information on the derivation and interpretation of these statistics can be seen on the FAO Aquastat website.
 
  
Further water and related statistics can be accessed at the [http://www.fao.org/nr/water/aquastat/data/query/index.html?lang=en Aquastat Main Database].  
+
Significant outcrops of alluvial sediments occur in the Akagera River floodplain (shown on the map below as the line of Unconsolidated Aquifer along the eastern border of Rwanda). Smaller outcrops of alluvium are also present in river valleys across the rest of the country, but are too small to be shown on this map.  
  
<sup>1</sup> More information on [http://www.fao.org/nr/water/aquastat/water_use_agr/index.stm irrigation water use and requirement statistics]
+
{|
 +
|-
 +
|
  
==Geology==
 
  
The geology map shows a simplified overview of geology at a national scale (see the [[Geology | Geology resource page]] for more details).
+
| [[File:Rwanda_Geology.png | center | thumb| 500px | Geology of Rwanda at 1:5 million scale. Developed from USGS map (Persits et al. 2002). For more information on the map development and datasets see the [[Geology | geology resource page]].]]
More information is available in the report [https://www.bgs.ac.uk/africaGroundwaterAtlas/atlas.cfc?method=ViewDetails&id=AGLA060018 UN (1988)] (see References section, below).
 
 
 
 
 
[[File:Rwanda_Geology2.png | center | thumb| 500px | Geology of Rwanda at 1:5 million scale. Based on map described by Persits et al. 2002/Furon and Lombard 1964. For more information on the map development and datasets see the [[Geology | geology resource page]].]]
 
 
 
 
 
 
 
{| class = "wikitable"
 
|+ Geological environments
 
|Key formations||Period||Lithology
 
|-
 
!colspan="4"|Unconsolidated sedimentary
 
|-
 
|Alluvium and lake sediments
 
||Quaternary
 
||Unconsolidated alluvium infilling valleys and forming floodplains; and lake sediments, which mainly comprise sands, silts, gravels and clays. The most significant alluvial sediments occur in the Akagera River floodplain along the eastern border with Tanzania. Smaller outcrops of alluvium are also present in river valleys across the rest of the country, but are too small to be shown on this map.
 
|-
 
!colspan="4"|Volcanic rocks
 
|-
 
|Northern lavas; Southwestern basalts
 
||Cenozoic (some possibly Cretaceous)
 
||Volcanic rocks crop out in the north and the far west of the country, largely lava flows. Schlüter (2006) divides them into northern lavas (of Quaternary age) and southwestern basalts (of Cenozoic-Cretaceous age).
 
|-
 
!colspan="4"|Precambrian
 
A number of different units within the Precambrian are named, with complex outcrops across the country (e.g. see Schlüter 2006). These are not distinguished on this geology map because of its small scale. The main divisions are described below.
 
|-
 
|Metasedimentary rocks, including the Burundian Supergroup
 
||Middle Proterozoic
 
||Metasedimentary rocks, largely quartzites, metamorphosed sandstones and shales of the Burundian Supergroup, which are locally intruded by granite. These are seen across much of the country. Named geological units within the Burundian Supergroup are the Byumba, Miyove and Lower series (Schlüter 2006).
 
|-
 
|Granites and associated other basement rocks
 
||Lower Proterozoic
 
||These are sometimes called 'older granites', along with granitic-gneisses and migmatites. They are seen in parts of eastern and southern Rwanda.
 
|-
 
 
|}
 
|}
  
 
==Hydrogeology==
 
==Hydrogeology==
  
The hydrogeology map below shows a simplified overview of the type and productivity of the main aquifers at a national scale (see the [[Africa Groundwater Atlas Hydrogeology Maps| Hydrogeology map resource page]] for more details).  
+
The hydrogeology map below shows a simplified overview of the type and productivity of the main aquifers at a national scale (see the [[Hydrogeology Map | Hydrogeology map resource page]] for more details).  
  
Information on groundwater in Rwanda is still relatively limited, but further detail can be found in the reports listed in the references section below, including a more detailed hydrogeological map, which is published in the [https://waterportal.rwfa.rw/report/annual-water-status-report-2016-2017 Rwanda Annual Water Status Report 2016-2017].
+
Some information on the hydrogeology of Rwanda is available in the report [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060018 United Nations (1988)] (see References section, below).  
  
[[File:Rwanda_Hydrogeology2.png | center | thumb | 500px | Hydrogeology of Rwanda at 1:5 million scale. For more information on how the map was developed see the [[Africa Groundwater Atlas Hydrogeology Maps | hydrogeology map]] resource page]]
 
  
  
'''Summary'''
 
  
The most common aquifer type in Rwanda is fractured, weathered Precambrian basement. Small outcrops of volcanic rocks form aquifers in the Western Province, in the far west and on the northern border. There are many local Quaternary unconsolidated alluvial aquifers, generally forming narrow, shallow aquifers along river valleys, with the largest outcrop in the east of the country.
+
[[File:Rwanda_Hydrogeology.png]] [[File: Hydrogeology_Key.png | 500x195px]]
  
====Unconsolidated====
+
===Groundwater use and management===
{| class = "wikitable"
 
|Aquifer Productivity||Named Aquifers and General Description||Recharge
 
|-
 
|High Productivity
 
||Most of the Quaternary unconsolidated aquifers are river alluvium, and form narrow linear aquifers along river valleys. Their aquifer properties are variable, depending largely on lithology, but where alluvium is dominated by coarser grained sediment (gravel and coarse sand), storage capacity and transmissivity can be high. Aquifers are usually unconfined with a shallow water table (<15 mbgl) and form locally important water supply sources.
 
||Recharge is generally high due to close connection with rivers and wetlands.
 
|}
 
  
====Volcanic====
+
The [http://www.minirena.gov.rw Ministry of Environment] and the [http://www.rnra.rw/ Rwanda Natural Resources Authority (RNRA)] have responsibility for managing water resources in Rwanda. The RNRA, and particularly its Integrated Water Resource Management section (RNRA-IWRM) is the institution with responsibility for monitoring groundwater resources.  
{| class = "wikitable"
 
|Aquifer Productivity||Named Aquifers and General Description
 
|-
 
|Moderate Productivity
 
||Little is known about groundwater in the volcanic rocks in Rwanda. Highly permeable basalt layers are documented in the Sebeya catchment in north-west Rwanda [http://www.water.rw/wp-content/uploads/2018/11/20181016-Sebeya-Catchment-Plan-2018-2024-FINAL.pdf (Water for Growth Rwanda, 2018c)].
 
|}
 
  
====Weathered, Fractured Basement====
+
A [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf Rwanda Water Resources Master Plan] (2014) contains detailed recommendations for future management of groundwater, including setting up and operating a groundwater monitoring network.  
{| class = "wikitable"
 
|Aquifer Productivity||Named Aquifers and General Description
 
|-
 
|Variable Productivity (generally Low to Moderate)
 
||The productivity of the basement aquifer depends on the localised nature and extent of fracturing and weathering - how thick is the weathered zone and how developed are water-bearing fractures? In the eastern and western provinces groundwater is mostly found in low productivity fractured granite, gneiss and the generally more productive quartzite. A north-south trending belt of more productive metasedimentary basement rocks, including schist and quartzite, extends along the border of the western province.
 
|}
 
 
 
===Groundwater Quality===
 
 
 
Groundwater quality is monitored by the Rwanda Water and Forestry Authority (RWFA). Noted problems with groundwater quality are usually caused by poor agricultural and mining practices, or by wastewater discharge from both domestic and industrial sources. Further detail on specific groundwater quality issues identified by the monitoring programme are summarised in [https://waterportal.rwfa.rw/report/annual-water-status-report-2016-2017 Rwanda Water and Forestry Authority (2017)].
 
 
 
===Groundwater use and management===
 
  
The [http://www.environment.gov.rw Ministry of Environment] and the [http://rwfa.rw Rwanda Water and Forestry Authority (RWFA)] have responsibilities for managing water resources in Rwanda.  
+
At present there is no systematic groundwater monitoring in Rwanda. Groundwater monitoring data (both levels and quality) are generally only collected during specific, temporary projects (RNRA 2014), such as the development of the Rwanda National Water Master plan, during which a few groundwater stations were monitored temporarily. Groundwater data collected will be stored in the Rwanda Water Resources Information System (RWRIS).  
  
The [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf Rwanda Water Resources Master Plan] (2014) contains detailed recommendations for integrated water resources management, including setting up and operating a groundwater monitoring network. This has now started and data from the monitoring stations are available through the [https://waterportal.rwfa.rw/ Rwanda Water Portal]. An Annual Water Status Report was produced for 2016/17 and is available through the Water Portal (see References below). This contains a more detailed hydrogeological map of the country.  
+
At the moment, therefore, there is not enough information to assess the groundwater resources in Rwanda in terms of total volume available, water levels, essential water quality parameters, or annual recharge assessments, interactions with surface water resources, or current abstraction and used water infiltration rates (RNRA 2014).  
  
The Water Resources Master Plan estimated that total groundwater storage in Rwanda is around 162,176 Million Cubic Metres. There are no reliable estimates of total groundwater abstraction, but in 2005, groundwater was reported to account for 86% of safe drinking water supply in rural areas (Ministry of Natural Resources 2011). In the Eastern and parts of the Southern Province, most people depend on groundwater from boreholes. Extensive borehole drilling and shallow well construction have been done, mostly in the Eastern Province, since 1994. As of 2009, there were at least 400 boreholes and wells in various parts of the country (Ministry of Natural Resources 2011). In upland areas, groundwater from springs is a key resource, including via many piped water supply schemes. Spring supplies can be threatened by deforestation and erosion.
 
  
 
=== Transboundary aquifers===
 
=== Transboundary aquifers===
  
For general information about transboundary aquifers, please see the [[Transboundary aquifers | Transboundary aquifers resources page]].
+
For further information about transboundary aquifers, please see the [[Transboundary aquifers | Transboundary aquifers resources page]].
  
 
==References==
 
==References==
  
References with more information on the geology and hydrogeology of Rwanda may be accessed through the [https://www.bgs.ac.uk/africaGroundwaterAtlas/atlas.cfc?method=listResults&title_search=&author_search=&category_search=&country_search=RW&placeboolean=AND&singlecountry=1 Africa Groundwater Literature Archive].
+
References with more information on the geology and hydrogeology of Rwanda may be accessed through the [http://www.bgs.ac.uk/africagroundwateratlas/searchResults.cfm?title_search=&author_search=&category_search=&country_search=RW&placeboolean=AND&singlecountry=1 Africa Groundwater Literature Archive].
  
 
===Online resources===
 
===Online resources===
  
Further information on Rwanda's water and groundwater resources can be found via:
+
Information on Integrated Water Resource Management] in the [http://www.rnra.rw/ Rwanda Natural Resources Authority]
  
[http://rwfa.rw Rwanda Water and Forestry Authority]
 
  
[https://waterportal.rwfa.rw/ Rwanda Water Portal]
 
  
[http://www.water.rw/ Water for Growth Rwanda] - a joint Rwanda-Netherlands Initiative to promote improved integrated water resources management in Rwanda
 
  
Further geological information can be obtained from the [http://www.rmb.gov.rw Rwanda Mining Board].
+
==Return to the index pages==
 
+
[[Africa Groundwater Atlas Home | Africa Groundwater Atlas]] >> [[Hydrogeology by country | Hydrogeology by country]]  >> Hydrogeology of Rwanda  
===Documents===
 
 
 
Hulsbosch N, Van Daele J, Reinders N, Dewaele S, Jacques D and Muchez P. 2017. [https://www.researchgate.net/publication/317424038_Structural_control_on_the_emplacement_of_contemporaneous_Sn-Ta-Nb_mineralized_LCT_pegmatites_and_Sn_bearing_quartz_veins_Insights_from_the_Musha_and_Ntunga_deposits_of_the_Karagwe-Ankole_Belt_Rwanda Structural control on the emplacement of contemporaneous Sn-Ta-Nb mineralized LCT pegmatites and Sn bearing quartz veins: Insights from the Musha and Ntunga deposits of the Karagwe-Ankole Belt, Rwanda]. Journal of African Earth Sciences 134, 24-32. Doi: 10.1016/j.jafrearsci.2017.06.004
 
 
 
Rwanda Natural Resources Authority (RNRA). 2014. [http://www.environment.gov.rw/uploads/media/Rwanda_Water_Resources_Master_Plan_01.pdf Consultancy services for development of Rwanda National Water Resources Master Plan]. Tender Number 021/RNRA/2011-2012. Master Plan Report: Main Volume. Final Version May 2014. Prepared by SHER Ingénieurs-Conseils s.a.
 
 
 
Rwanda Ministry of Natural Resources. 2011. [http://www.environment.gov.rw/uploads/media/Rwanda-Waterstrategy-04062011-final-1006-corrected1406_02.pdf Water Resources Management Sub-Sector Strategic Plan (2011-2015)].
 
 
 
Rwanda Water and Forestry Authority. 2017. [https://waterportal.rwfa.rw/report/annual-water-status-report-2016-2017 Annual Water Status Report 2016-2017]
 
 
 
Schlüter T. 2006. [http://www.geokniga.org/bookfiles/geokniga-geological-atlas-africa.pdf Geological Atlas of Africa].  
 
 
 
Water for Growth Rwanda. 2018a. [http://www.water.rw/wp-content/uploads/2018/11/20181016-Upper-Nyabarongo-Catchment-Plan-2018-2024-FINAL.pdf IWRM Programme Rwanda: Upper Nyabarongo Catchment Plan 2018-2024].
 
 
 
Water for Growth Rwanda. 2018b. [http://www.water.rw/wp-content/uploads/2018/11/20181016-Nyabugogo-Catchment-Plan-2018-2024-FINAL.pdf IWRM Programme Rwanda: Nyabugogo Catchment Plan 2018-2024].
 
  
Water for Growth Rwanda. 2018c. [http://www.water.rw/wp-content/uploads/2018/11/20181016-Sebeya-Catchment-Plan-2018-2024-FINAL.pdf IWRM Programme Rwanda: Sebeya Catchment Plan 2018-2024].  
+
Rwanda Natural Resources Authority (RNRA). 2014. [http://www.minirena.gov.rw/fileadmin/Land_Subsector/Water/Rwanda_Water_Resources_Master_Plan.pdf Consultancy services for development of Rwanda National Water Resources Master Plan]. Tender Number 021/RNRA/2011-2012. Master Plan Report: Main Volume. Final Version May 2014. Prepared by SHER Ingénieurs-Conseils s.a.  
  
Water for Growth Rwanda. 2018d. [http://www.water.rw/wp-content/uploads/2018/11/20181016-Muvumba-Catchment-Plan-2018-2024-FINAL.pdf IWRM Programme Rwanda: Muvumba Catchment Plan 2018-2024].  
+
United Nations. 1989. [http://www.bgs.ac.uk/africagroundwateratlas/fulldetails.cfm?id=AGLA060018 Groundwater in Eastern, Central and Southern Africa: Rwanda]. United Nations Department of Technical Cooperation for Development.  
  
Theunissen K, Hanon M and Fernandez N. 1991. Carte geologique du Rwanda (scale 1:250,000). Service Geologique du Rwanda et Musee Royale de l'Afrique Centrale,  Tervuren.
 
 
United Nations. 1989. [https://www.bgs.ac.uk/africaGroundwaterAtlas/atlas.cfc?method=ViewDetails&id=AGLA060018 Groundwater in Eastern, Central and Southern Africa: Rwanda]. United Nations Department of Technical Cooperation for Development.
 
 
 
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