The Pangani Basin Water Board is implementing the project with technical assistance from IUCN (International Union for Conservation of Nature), the Netherlands Development Organization (SNV) and the local NGO PAMOJA. The project is financially supported by the IUCN Water & Nature Initiative, the Government of Tanzania, the European Commission through a grant from the EU-ACP Water Facility, and the Global Environment Facility through UNDP.
Pangani River Basin Flow Assessment
Background Information
The Pangani River Basin Management Project (PRBMP) is generating technical information and developing participatory forums to strengthen Integrated Water Resources Management in the Pangani Basin, including mainstreaming climate change, to support the equitable provision and wise governance of freshwater for livelihoods and environment for current and fu ture generations.
The Project is based on Tanzania’s National Water Policy (2002) and the Water Resource Management Act (2009) which promotes integrated water resource management principles. The policy and legislation recommend that water be managed at the basin level in a participatory and equitable way that emphasizes sustainability and conservation of the water source.
The Project has undertaken an Integrated Flow Assessment with the Pangani Basin Water Office, to develop an understanding of the hydrology of the river basin, the flow-related nature and functioning of the river ecosystem and the links between the ecosystem and the social and economic values of the river’s resources. A series of reports have been produced that have provided information into the flow assessment.
Building on this information, stakeholders are now gaining understanding of social, economic and environmental trade-offs for different water allocations through the development of a number of scenarios.
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Pangani River Basin Flow Assessment - Final Summary Report | This report synthesises information from the Pangani River Basin Flow Assessment into a Final Project Report; and evaluates the extent to which the project has achieved its goals. | PDF Document 5.30MB |
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River Health Assessment Report | This report forms part of the Pangani River Basin Flow Assessment Initiative. It is based on a health assessment of the river during the wet and dry seasons, together with existing Pangani Basin Water Board water-quality data collected at key points along the river. | PDF Document 4.17MB |
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Pangani Socioeconomic Assessment | This study forms part of the Pangani River Basin Flow Assessment Initiative. The aims of the socio-economic baseline assessment were: To provide an overview of the basin and its economy, to provide a description of the livelihoods of people living in proximity to rivers in the basin, and to estimate the contribution that aquatic ecosystem resources make to people’s livelihoods. | PDF Document 3.53MB |
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Pangani Basin Delineation Report | This report addresses study area delineation and site selection for the Pangani Environmental Flow Assessment work. The task was accomplished by first separately delineating relatively homogeneous zones and sub-zones along the river and estuary, and for socio-economic activities in the basin. Thereafter, the resultant delineations were synchronised to produce a scheme for all project work. Within this scheme, representative sites were selected in the subzones deemed to be most relevant to the study. | PDF Document 2.28MB |
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Pangani - Development of Climate Change Scenarios | This report documents the modelled scenarios of local climate variability due to global climatic change, using the projected climate changes to modify the “no change”, 76-year long, monthly sub-catchment rainfall sequences, and average monthly evaporation values that serve as input to the hydrological catchment model that has been configured and calibrated for the Pangani Basin. | PDF Document 3.05MB |
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Pangani Hydraulic Study of Lake Jipe, Nyumba ya Mungu Reservoir and Kirua Swamp | This report documents information on surface water inflows and groundwater recharge in maintaining water levels in Lake Jipe and the Kirua swamps and water levels (or depth) and inundated areas in Lake Jipe, Nyumba ya Mungu and Kirua Swamp associated with different antecedent river flows and seasonal variations in aspects such as evaporation etc. | PDF Document 1.66MB |
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Pangani Hydrology and System Analysis Volume 1 | The report documents basic hydrological information that is required to undertake the environmental flow assessments for the Pangani Basin to support the water allocation process in the basin. | PDF Document 4.43MB |
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Pangani Hydrology and System Analysis Volume 2 | This report document the configuration of the WEAP Model and the way it was used to simulate scenarios and generate modified flow sequences at key points in the Pangani basin. | PDF Document 2.79MB |
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Pangani - The Analysis of Water Allocation Scenarios for the Pangani River Basin | This report contains information on the Present Day situation in the catchment, scenario creation process, the chosen scenarios, the predicted outcomes of each scenario, and the predicted effect of climate change. It also presents some recommendations for consideration. | PDF Document 4.99MB |
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Pangani - Water-related issues and trends in the Pangani River Basin | This report provides baseline information on the condition of the Pangani River system against which the impact of water-related decision-making can be monitored in future interms of the relationship between flow, river health and the people who use the river. | PDF Document 775KB |
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Pangani - An assessment of understanding and knowledge gaps | This report provides information to enhance understanding of water-related ecological and economic systems of the Pangani Basin based on work which was already completed then with a view to identifying gaps and development of Terms of Reference for specialist studies to address the gaps. | PDF Document 3.17MB |
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Pangani - Fish and invertebrate life histories and important fisheries of the Pangani River Basin | This report describe the relationships between the timing and magnitude of freshwater flows in the Pangani system and the biology and life history characteristics of its key fish and invertebrate species. Such information could be used to infer what the historic abundance levels and distribution patterns were for these species in the Pangani catchment (where such information is lacking); predict how abundance and distribution patterns may change in the future under altered flow patterns; and derive the relationships between water level and fishery production that will be used to predict changes in catches in Nyumba ya Mungu, Lake Jipe, Kalimawe Dam and the Pangani estuary under different flow and water-level scenarios. | PDF Document 2.07MB |
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Pangani Estuarine Health Assessment Report | The report present information about the health of the Pangani Estuary. This is by no means a comprehensive assessment of the health of the system but is rather an initial health determination designed to provide an overview of the status of the system and to highlight potential flow related problems affecting the health of the system. | PDF Document 4.17MB |
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Pangani - Climate change modelling for the Pangani Basin to support the IWRM planning process | The report describes the best possible climate scenarios for the middle of the 21st century for the Pangani Basin, utilising a range of General Circulation Models (GCMs) and a state of the art statistical downscaling procedure. This should enhance understanding on the implications of future climate change on the water resources of the Basin for pragmatic planning. | PDF Document 4.85MB |
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Pangani Hydroelectric Power Modeling Study | This report provide information on an indication of dam-levels at Nyumba ya Mungu for different flow scenarios to the PRBFA biophysical models and input to the PRBFA macro-economic model on firm power generation and total energy production for different flow scenarios. | PDF Document 2.35MB |
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Pangani Basin: A Situation Analysis (2nd Edition) | The report describes the Pangani Situation including identifying the resources that occupy the Pangani River Basin (PRB) and the processes and events that affect them, and identifying a series of broad action areas wherein interventions may feasibly be delivered. | PDF Document 2.09MB |
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Bonde La Pangani: Uchambuzi wa Hali Halisi (Toleo la pili) | Madhumuni ya toleo la kwanza la Uchambuzi ya Hali ya Bonde la Mto Pangani yalikuwa kuainisha rasilimali za asili zilizomo katika Bonde hilo, matukio yanayoziathiri na kutambua maeneo ya kufanyia kazi. Madhumuni mengine yalikuwa kutambua mashirika, asasi na wadau wengine ambao IUCN ingeweza kushirikiana nao. | PDF Document 2.04MB |
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Mto Pangani Na Mfumo Wake: Ripoti ya Hali ya Bonde | Ripoti hii ya Hali ya Bonde inaeleza kwa muhtasari mambo muhimu yaliyojitokeza katika tafiti hizi za kitaalamu kwa ajili ya watu kwa ujumla. Inaweka msingi wa uelewa wetu wa hali ya sasa ya uhai na kazi mbalimbali zitokanazo na mto Pangani na mfumo wake. | PDF Document 2.79MB |
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Pangani River System: State of the Basin Report | This report summarizes the key findings of the various reports from the Pangani Flow Assessment in a simple language for the general audience. It serves as a baseline marking our current understanding of the health and functions of the Pangani River System. | PDF Document 6.83MB |
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Mto Pangani Na Mfumo Wake: Ripoti ya Hali ya Bonde | Ripoti hii ya Hali ya Bonde inaeleza kwa muhtasari mambo muhimu yaliyojitokeza katika tafiti hizi za kitaalamu kwa ajili ya watu kwa ujumla. Inaweka msingi wa uelewa wetu wa hali ya sasa ya uhai na kazi mbalimbali zitokanazo na mto Pangani na mfumo wake. | PDF Document 2.79MB |
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Future of the Basin Report | The Future of the Basin Report summarizes the findings of the 2nd phase of the Pangani River Basin Management project. It recaps some of the pertinent information from the State of the Basin Report, explains the mandate of the Pangani Basin Water Office and Board, and provides some information on the hydrology of the basin. It then outlines the approach used to develop and analyze future development pathways for the basin as well as a further investigation of the impacts of climate change. This will help the government and other stakeholders to understand what the future could be like, and to discuss and negotiate on the future that they wish for. | PDF Document 11.27MB |
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Eflow Assessment | Critical analysis of environmental flow assessments of selected rivers in Tanzania and Kenya | PDF Document 10.23MB |
Project Partners
The Pangani River Basin Management Project is generating technical information and developing participatory forums to strengthen Integrated Water Resources Management in the Pangani Basin, including mainstreaming climate change, to support the equitable provision and wise governance of freshwater for livelihoods and environment for current and future generations.
