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.
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 PBWO water-quality data collected at key points along the river. Thirteen study sites (Figure E1) were selected to represent a range of zones (Mountain Stream; Upper Foothill; Lower Foothill; Mature Lower River and Rejuvenated Bedrock Cascade).
The methods used for the assessment are based on those developed in the River Health Programme of the National Aquatic Ecosystem Health Biomonitoring Programme of South Africa. The method involves the collection of information necessary to characterise a site, to provide an indication of catchment condition and land-use, together with relevant abiotic (water quantity and quality) and biotic
(invertebrates, fish, riparian vegetation) information.
Each of these biotic components provides information of the health on the instream or riparian zone of the river. A field
manual and associated datasheets have been compiled for use in the IUCN-Pangani Basin River Health assessment.
The results section provides a description of the characteristics of each site, including a description of channel classification and stream dimensions, together with a photographic record for each site during the wet and dry seasons. In terms of water quantity, discharge were generally higher at sites in the wet season compared to the dry season, with the exception of two lower foothill sites (R8 and R9), both below NYM dam. Sites R2, on the Kikuletwa River, and R7, on the Muraini River, dried up during the dry season; the latter due to the seasonal nature of the river.
The site on the mature Lower River (R11) had highly variable flow within a 24-hour period in the dry season due to storage and releases from the Pangani Falls Hydropower station.
Other Resources and Highlights
- Publications
- River Health Assessment Report
- Pangani Socioeconomic Assessment
- Pangani Basin Delineation Report
- Pangani - Development of Climate Change Scenarios
- Pangani Hydraulic Study of Lake Jipe, Nyumba ya Mungu Reservoir and Kirua Swamp
- Pangani Hydrology and System Analysis Volume 1
- Pangani Hydrology and System Analysis Volume 2
- Pangani - The Analysis of Water Allocation Scenarios for the Pangani River Basin
- Pangani - Water-related issues and trends in the Pangani River Basin
- Pangani - An assessment of understanding and knowledge gaps
- Pangani - Fish and invertebrate life histories and important fisheries of the Pangani River Basin
- Pangani Estuarine Health Assessment Report
- Pangani - Climate change modelling for the Pangani Basin to support the IWRM planning process
- Pangani Hydroelectric Power Modeling Studd
- Pangani Basin: A Situation Analysis (2nd Edition)
- Bonde La Pangani: Uchambuzi wa Hali Halisi (Toleo la pili)
- Pangani River System: State of the Basin Report
- Mto Pangani Na Mfumo Wake: Ripoti ya Hali ya Bonde
