Halda River is only a river where carp species spawn naturally. Every year a huge number of carp fish spawn here. But this river now faces several destructions and pollution.

1. Noakhali Science and Technology University
Department of Fisheries and Marine Science
Presentation topic: Halda river pollution
Course Title: Aquatic Pollution and Environmental Impact Assessment
Course code: FIMS 4209
Submitted to:
Shyamal Kumar Paul
Assistant professor,
Department of Fisheries and Marine
Science
Noakhali Science and Technology
University
Submitted
by:
Roll:
ASH1802060M
BFH1802065F
ASH1802066M
Session: 2017-18
Year: 3 Term: 2

2. Content line
 Introduction
 Halda river egg collection statistics
 Different types of pollutants in the Halda river
 Sources of pollutants in river Halda
 Major pollution source of Halda river
 Effects of pollution in Halda river
Conclusion
 References

3. Introduction
Halda river is one of the major rivers in the South-East region of Bangladesh.
This river originates in the hilly streams of the Khagrachari district and flows
through the Fatickchari, Hathazari, and Rouzan of Chattogram districts covering 88
km, and then meets the river Karnaphuli.
The Halda river is unique for carp breeding.
The Halda River and 23,422 acres of land adjoining its banks as Bangabandhu
Fisheries Heritage.
This important river is getting polluted intensely in different ways, such as through
industrial, agricultural, domestic, and sewage disposal.

4. Map of Halda River

5. Halda river egg collection statistics
Good weather conditions still cause occasional blips in egg production. For instance, during
the years when there was a lot of rainfall, favorable temperature, and a minimum influx of
saltwater in the waterbody, about 33,000kg of eggs were hauled in 2008, 23,000kg in 2018,
and 25,536kg in 2020.

6. Different types of pollutants present in the halda river
 Pathogens
 Inorganic compounds
 Organic materials
 Salinity intrusion
 Macroscopic pollutants
 Sediments
Sources of pollutants in river Halda
 Point Source
 Non-point source

7. Major pollution source of Halda river
Men made source
 Industrial pollution
 Tannery
 Agri-chemicals
 Brick-fields
 Constructions site
 Paper mills
 Power plants
 Wastage from the boat
Natural source
 Saltwater intorsion
 Soil erosion and siltation

8. Effects of pollution in Halda river
Food web destruction
Death of fish and other animals
Create problems associated with fertility rate and spawning rate
High diseases rate
Lower egg production

9. Conclusion
The river Halda is considered the only gene bank of pure Indian carp fish like Ruhi,
Katla, Mrigel, and Kalibaush — globally, and hosts around 200 Gangetic dolphins
categorized as endangered by International Union for Conservation of Nature
(IUCN).
Most of the pollution sources that hamper the health of Halda river are men made
and the pollution gredually kill the only source of carp’s natural breeding ground.
References
 https://www.thedailystar.net/frontpage/industrial-pollution-killing-halda-river-in-bangladesh-
1718734
 https://bengaldelta.net/how-the-halda-river-in-danger/
 https://thedailynewnation.com/news/231090/Alarming--pollution-in-Halda-River-causes-concern
 http://www.haldariver.org/Book%20PDF/31.pdf

10. This Photo by Unknown Author is licensed under CC BY-SA-NC