The Poonch River is a warm water river and the water temperature approaches almost 30oC during the summer months. A total of 37 fish species have been recorded from the Poonch river. Six fish species observed in the study area are listed on the global IUCN Red List of Threatened Species. The Kashmir Catfish (Glyptothorax kashmirensis) is listed as Critically Endangered (CR), the Mahseer (Tor putitora) is listed as Endangered (EN) while the Common Carp (Cyprinus carpio) and Twin-banded Loach (Botia rostrata) are listed as Vulnerable (VU). Moreover, Pabdah Catfish (Ompok pabda) and Butter Catfish (Ompok bimaculatus) are listed as Near Threatened (NT). Other important endemic fish species found in the project’s area include Pakistani Baril (Barilius pakistanicus), Punjab Loach (Schistura punjabensis) and Nazir‟s Catfish (Glyptothorax naziri).
Critical Habitat: Due to its high fish diversity and importance in supporting fish of both conservation and economic importance, in December 2010, the Poonch river along with its tributaries was declared as Poonch River Mahaseer National Park by local environmental authorities. The nomination of this National Park has been promoted and/or endorsed by a number of reputable environmental NGO, including but not limited to IUCN, WWF, Himalayan Wildlife Foundation, and Snow Leopard Foundation, as they argue that the Poonch river is essential for the global survival of Kashmir Catfish, and presents a unique natural abundance of the Mahaseer fish, an endangered species whose population has been consistently declining all over Himalayan rivers.
Upon IFC’s request, and as an integral component of the ESIA, a Critical Habitat Assessment (CHA) was conducted. This assessment confirmed that the project will be sited in a Critical Habitat, and therefore the project company will developed a Biodiversity Action Plan (BAP), of which an advanced draft is disclosed together with this review summary.
The Project ESIA evaluated various scenarios to address both flow and non-flow related pressures on the biodiversity of the Poonch River. See below for discussion of flow related pressures. The non-flow related pressures include selective fishing (with nets and rods), non-selective fishing (with gill nets, poisons and dynamite), sediment mining (sand, gravel and boulders), nutrient enrichment (waste water from human population centers), and harvesting of riparian vegetation for building materials. The ESIA scenarios predict that under a “business as usual” (BAU) scenario, even without the Gulpur HPP, the non-flow related pressures on the aquatic ecosystem will double in intensity over the next fifty years, predictably resulting in significant decline in abundance and diversity of the aquatic and semi-aquatic flora and fauna. The ESIA proposes a scenario (Pro 2 Scenario) that includes actions (proposed in the BAP) to reduce 2013 levels of these pressures by 50%, which is predicted to achieve net gain of aquatic biodiversity in th
e project area. For the two fish species that trigger Critical Habitat (Mahaseer and Kashmir Catfish), the ESIA “business as usual” (BAU) scenario – i.e. even in the absence of the Gulpur HPP - predicts extreme losses (46 - 100% loss) relative to 2013 levels over the next 50 years without any preventive actions. The ESIA Pro 2 scenario, with the BAP actions, predicts an overall net gain for both fish species.
Ecological Flow: Hagler Bailly Pakistan appointed Southern Waters to assist with an environmental flow (EFlow) assessment for the Poonch river in the proposed Gulpur HPP’s area of influence. The objectives of the assessment were (a) to evaluate present day condition (i.e. the present structure and functioning) of the Poonch river from upstream of Gulpur HPP to Mangla Dam; and (b) to evaluate how the condition of the river would change under different operational scenarios for the proposed Gulpur HPP, including a non-project business-as-usual (BAU) scenario. Hydrological data collected during the last 50 years, shows that in the project area the Poonch river has an average mean flow of approximately 110 m3/s, with 5-day high and low flows of 726 m3/s and 17 m3/s, respectively. Downstream Response to Imposed Flow Transformations (DRIFT -
http://www.southernwaters.co.za/downloads/drift.pdf) methodology was used to assess impact of varying levels of downstream releases / environmental flow on project economics and aquatic ecosystem integrity. To finally select an EFlow regime that achieves a balance between ecosystem integrity and project financial viability, the company discussed these modelled impacts with key stakeholders, including environmental authorities and representatives from the environmental NGOs that promoted the Poonch River Mahaseer National Park nomination. Given the limited length of the dewatered section from the dam to the power house tailrace of only 700 meters and the company’s commitment to a true run-of-river operation (e.g. non-peaking), the study determined that the optimal trade-off was at 4 m3/s, and that beyond this release, there was limited-to-nil ecological gains by increasing Eflow at the expense of power generation. Prior to plan commissioning, as a requirement to IFC financing, Gulpur HPP will complete a comprehensive Ecological Flow Management Plan, consistent with good international industry practices and PS6 requirements.
Terrestrial and riparian Natural Habitat: Site clearance and construction of project infrastructure will result in immediate and direct modification of land and a loss of terrestrial habitat leading to loss of plants and animals in the project’s influence area, including the area to be flooded by the new reservoir. The area of habitat loss consists largely of riparian habitat and scrub forest. No threatened flora or fauna species were found or reported from this area. Limited signs of the Otter (Lutra lutra, listed as Near Threatened in the IUCN Red List) were observed, and this species is
known to be present in similar habitat. No critical habitat, threatened or unique ecosystems were identified in the terrestrial and riparian impact area. The decrease in biodiversity and ecological function caused by construction related disturbances is predicted to be minor. Mitigation measures include following the measures outlined in the Construction Management Plan, such as development of a reforestation program, and prohibition of hunting, poaching and/or logging by the workforce.
Biodiversity Action Plan (BAP): A comprehensive BAP will be developed, outlining Pro2 scenario commitments to achieve net positive gain in the ecological values that triggered Critical Habitat classification, namely (a) Kashmir Catfish, (b) Mahaseer fish and (c) Poonch River Mahaseer National Park conservation objectives.
These actions will include, among others: (i) implementing an effective watch and ward system supported by institutional arrangements to reduce illegal and indiscriminate hunting and killing of wildlife (both aquatic and terrestrial) including several bans on non-selective fishing, fishing in tributary breeding grounds, fishing during the breeding season, and sediment mining in ecologically sensitive areas; (ii) prohibiting removal of vegetation that is important for supporting biodiversity; (iii) increasing park staff, patrols and mining inspectors; (iv) limiting areas designated for sediment mining; (v) banning of livestock grazing and wood collection in sensitive areas; and (vi) conducting environmental awareness workshops for local communities. The Sponsors will finance supplemental park staff, equipment, facilities, and logistics to close the existing capacity gaps – including the construction of two park management offices and support to the local Fish and Wildlife Department (FWD) on the construction of a hatchery for Mahaseer on the Poonch river. This hatchery is a key component of the actions needed to increase numbers of the Mahaseer in the downstream portion of the Poonch river after the dam is in place as they will be cut off from their breeding grounds upstream. Therefore, success of this hatchery is critical to the success of the BAP actions and will be planned and monitored carefully. In addition, project sponsors will provide technical support to the local FWD by engaging experts in park management and river ecology.
Institutional arrangements proposed in the BAP consists of (vii) putting in place a protection system for Poonch River Mahaseer National Park partly financed by the project and implemented by an independent organization; (viii) active support from the local FWD by making available existing staff for protection and assistance in coordination with other government line departments such as police and district administration; (ix) commitment by the local FWD to provide legal authority to the staff of the independent organization for exercising powers under wildlife legislation; (x) oversight and monitoring by the Wi
ldlife Management Board of the local FWD; and (xi) monitoring by an independent third party on a long term basis.
These actions, along with development of a strong Poonch River Mahaseer National Park management plan, are expected to lead to net gain on the indicator fish species populations and strengthen and support conservation objectives of the park.
The draft Biodiversity Action Plan (BAP), including a Biodiversity Monitoring and Evaluation Plan (BMEP) will be updated and finalized in the 1Q of 2015 after further consultation with key stakeholders, and include metrics to measure and track abundance/population of these two fish species in the project’s area of influence and to quantitatively evaluate if net gain is achieved for these two species over time.