Type of Habitat
The project is near Jinja, Uganda on the White Nile between Lake Kyoga (downstream) and Lake Victoria (upstream). The project overlaps the Victoria Basin forest-savanna mosaic terrestrial ecoregion and Lake Victoria Basin freshwater ecoregion. These ecoregions do not form part of any biodiversity hotspot or endemic bird area. The total project footprint is 617 ha, including a 388 ha impoundment, which was first flooded in 2011, and the land lease of 229 ha. Prior to start of construction (2007), the terrestrial area to be inundated (approximately 80ha) was classified as modified habitat. The nearest upstream dams are Nalubaale and Kiira (approximately 8 km) commissioned in 1954 and 2000, respectively. The nearest downstream dam will be Isimba Dam (approximately 32km), currently under construction by a third party contracted by the Government of Uganda (GoU), with completion expected in the near future.
An independent biodiversity baseline, focused on several species of fish - identified as haplochromines - between Lake Victoria and Lake Kyoga, was completed in 2001, as a supplement to a broader social and environmental assessment for the project. Haplochromines are a family of fish species known for high diversity and endemism within the region and identified as a set of high biodiversity values during the original IFC project appraisal. Biannual monitoring with support from the project has been undertaken by National Fisheries Resources Research Institute (NaFIRRI) from 2006 to present, with the most recent monitoring report in March 2017. An additional aquatic survey of the entire river between Lake Victoria and Lake Kyoga was conducted by NaFIRRI and international species experts in 2016. Independent annual audits of the project, including review of NaFIRRI monitoring reports described above, have been conducted annually to meet NEMA and lenders’ requirements. The status of biodiversity is thus well understood, consisting of a decade of surveys and monitoring by various parties.
At the time of IFC’s original investment in 2007, BEL was required to offset impacts to the Nile River and environs via enhanced protection of the Kalagala Falls, along with the Kalagala Central Forest Reserve and the Nile Bank Central Forest Reserve (CFR). (Separately, impacts from the transmission line to Kawanda - ‘the transmission line’ described above - were addressed through the offset of the Mabira CFR.) These two CFRs (along with the Mabira CFR) are included within the area covered by the offset as agreed by World Bank and the GoU. BEL’s role was defined as supporting development of this offset, in collaboration with the National Forestry Authority (NFA). In addition, it was agreed that responsibility for implementing the mitigation measures with regards to the transmission line rested largely with the NFA, with UETCL contributing to on-going management of the Mabira CFR (also included in the offset governend by the IA) by paying ground rent to NFA and covering its incremental costs. As was required under the 2006 SEA, BEL has monitored progress on these measures and collaborated, as necessary, to ensure their implementation.
The offset was established and protected by an indemnity agreement (IA) between World Bank and the Government of Uganda, which was signed on July 18, 2007. The IA is the legal instrument governing the Government of Uganda’s obligations regarding the Kalagala Offset Area (KOA), referred in the IA as the Kalagala Falls Site (KFS). The IA defines the KFS by reference to a map attached to it. The map indicates that the KFS includes a 10-km long stretch of the river. The southern and northern boundaries of the KFS are about 12.5 km and 22.5 kilometers, respectively, downstream of the Bujagali dam. The KFS extends some distance away from the river, to include two forest reserves on the river banks – the Kalagala CFR and the Nile Bank CFR, as noted earlier. The IA also extends specific protections to the Mabira CFR.
The IA specifically requires the Government of Uganda to set aside the KFS “to protect its natural habitat and environmental and spiritual values in conformity with sound social and environmental standards acceptable to the Association [International Development Association or ‘IDA’].” It also limits any tourism development at the KFS and requires that such tourism development only be carried out “in a manner acceptable to IDA and in accordance with the aforementioned standards.” Further, it requires that any power generation development that could adversely affect Uganda’s ability to maintain the above stated protection at the KFS obtain the prior agreement of IDA. The IA remains in effect until the commercial loans guaranteed by IDA are fully repaid (expected to occur in November 2023). While the IA is in effect, the Government of Uganda will continue to be bound to its contractual obligations in connection with the KFS and the Bank will continue assessing compliance of this contractual obligation by the Government of Uganda.
The Kalagala Offset Sustainability Management Plan (KOSMP) was developed by the Ministry of Water and Environment in response to IA requirement (iv) for the GoU to “conserve through a sustainable management program and budget mutually agreed by the Government and the Association, the present ecosystem of the Mabira Central Forest Reserve, as well as the Kalagala Central Forest Reserve and the Nile Bank Central Forest Reserve on the banks of Kalagala Falls (as such Reserves are included in the Kalagala Falls Site).” The KOSMP was finalized and adopted in 2010, covering the period 2010 through 2019, and was launched by the GoU in 2011. The KOSMP sets forth appropriate mitigation measures to conserve and safeguard the ecosystem of the CFRs and address some of the impacts of the Bujagali project. The plan recognizes the contributions by BEL through actions implemented under the BEL SEA in order to mitigate the negative effects of the Bujagali HPP.
The KOSMP is a Government program with a geographic scope that extends beyond the area defined as the KFS, as defined in the Bujagali IA, and which covers activities that go well beyond the specific contractual undertakings in the IA between the Government of Uganda and the World Bank. In that regard, the title of Kalagala Offset Sustainable Management Plan is misleading, since the KOSMP covers a broad range of reforestation, capacity building and livelihood restoration activities outside the KFS and the specific obligations set out in the IA.
The Kalagala Falls Site (KFS has been shown to be an area of high haplochromine diversity due to presence of rapids and includes important sites for restricted range species. The Isimba HPP, which as noted above is currently under construction, will affect the river downstream from Bujagali and is expected to flood a portion of the KFS, including aquatic areas, and is subject to assessment as an addendum to the Isimba ESIA, which is now disclosed on NEMA’s website (http://nema.go.ug/sites/all/themes/nema/docs/UG-ISIMBA-ESIA%20Addendum-TRACKED%20WB.%20June%2022%202017.pdf) for public consultation before being finalized. The Government of Uganda is being supported by the World Bank to prepare the addendum. The addendum includes recommendations to mitigate impacts to the offset from the construction of the Isimba HPP.
IFC and the client will continue to monitor the discussions between the Government of Uganda and the World Bank (ESAP item 15). As per ESAP item 16, in the unlikely event that the KFS ceases to exist (in the current or modified form), and is not replaced by alternative measures with similar objectives, BEL would be required to review 2006 requirements and develop an alternative offset approach to address compliance requirements agreed to between IFC and BEL at the time of the original investment, i.e., enhanced protection of the Kalagala Falls and Nile Bank Central Forest Reserve (CFR). (Any such measures would not include the Mabira Forest CFR, which is the responsibility of UETCL.) These alternative mitigation measures, if required, will not be asked to replace the broader set of actions and programs currently described within the KOSMP. Instead, the actions would be limited to reasonable actions within BEL’s control, namely enhancing the current fish surveys to focus on the species affected by the project and programs that could reduce threats to these species (e.g., provision of fish nets and education on fishing techniques to local fisherman), with a focus on the impacts of introduced predators, which have been the main cause of decline in the native species. In the unlikely event that there are further mitigation actions that may be required, but remain outside of BEL’s control, these will need to be discussed with the Government of Uganda in order to identify an appropriate course of action.
One issue that BEL is currently addressing is agricultural activities within a 100 meter buffer from the edge of the Nile River that is within the project site’s temporary lands and is required under Regulation 29 of Ugandan law (see ESAP item 12) to be free of those activities. BEL’s response includes replanting of river bank areas and notifying authorities of such encroachment This encroachment affects water quality and ultimately fish habitat.
Despite past conversion and existence of modified habitat pre- and post-construction, the project area is likely to qualify as critical habitat as defined by the (updated) 2012 edition of PS6. This is based on the continued occurrence in 2017 of aquatic restricted range species (e.g., Haplochromis simotes) and unique/threatened ecosystems (e.g., Lake Victoria/Kyoga transition zone rapids) within the broader river area. Ongoing monitoring and recent surveys indicate that at least two new-to-science species may also occur within the project area. No new impacts to these values are, however, expected as a result of the proposed financing because they have co-existed with the Bujagali dam and reservoir since inception, and no new construction or development is planned at the Bujagali dam site and reservoir. As per the ESAP item 13, BEL will commission a critical habitat assessment that will focus - though not exclusively - on the haplochromine species of fish in order to confirm the project area’s status as critical habitat and describe the full extent of possible values triggering critical habitat. Existing data is likely to be adequate for this assessment. As per ESAP item 14, should the critical habitat assessment find that the Bujagali HPP is in critical habitat, the company will prepare a biodiversity action plan (BAP) to deliver net gains for Critical Habitat values via reasonable actions that are within BEL’s control. Net gain will be assessed against a baseline at the time of the existing investment. Given existing monitoring by the project (e.g. NaFIRRI fish surveys) and management of the KFS by Government of Uganda no significant changes to existing practices by BEL and agreed SEA comitments from the original investment are expected.
Protected or Recognized Areas
The project does not overlap any known protected areas or internationally recognized areas. The nearest such site upstream is the Jinja Wildlife Sanctuary (IUCN Category IV, approximately 5km away). The nearest such sites downstream are Namavundu Forest Reserve (IUCN undesignated, 5km away), Kalagala Falls Central Forest Reserve (IUCN Category undesignated, 15 km away) and Nile Bank Central Forest Reserve (IUCN Category undesignated, 15 km away). The KOA was built around these last two protected areas, and they were targeted for enhanced management as part of the SMP.
Alien Invasive Species
Alien species are present within the project area. The most critical of these is the Nile Perch (Lates niloticus). The species is found in Lake Kyoga, Lake Victoria and the entire stretch of the Nile that connects them. It has been linked to widespread loss of endemic haplochromines within Lake Victoria, Lake Kyoga and associated catchments. The species was present prior to inundation, but inundation has improved habitat suitability and allowed individuals to reach larger sizes. Local fishers prize this species, which has had additional impacts from the fishing of haplochromines and other species for live bait. The quantities and size of Nile Perch are lower below the dam and this is associated with a stretch of river with the highest haplochromine abundance and diversity.
Kariba Weed (Salvinia molesta) is also found in both lakes and intervening river channel. BEL has an undocumented procedure for addressing alien invasive species. ESAP item 11 will ensure that the procedure is documented.
Control of such invasive species, particularly the Nile Perch, is likely to yield gains in haplochromine fish, including species of concern, but will be limited due to community preferences for Nile Perch as a preferred fishing species.
Management of Ecosystem Services
Community members and National Fisheries Resources Research Institute (NaFIRRI ) agree that fishery value has increased in the inundation area post dam construction due to increased size of Nile Perch. This has attracted local communities to the area and catch per unit effort has declined. This increased use has caused impacts to haplochromines and other indigenous fish species within the inundation area, as described above.