Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Status of Water Quality in the Tista River at Kaunia Point and Its Impact on Aquatic Environment

M. S. Islam
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail -1902

M. A. Islam
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail -1902

M. J. Islam
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail -1902

M. H. Kabir
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail -1902

N. T. Meghla
Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail -1902

Abstract/ Executive Summary:

The study was conducted to investigate the surface water quality of the Tista River at Kaunia point in wet (September to November) and dry season (December to February) during the period from September 2013 to February 2014. The water samples were collected from five different sampling stations of Tista River mentioned as Station 1 (St-1), 2 (St-2), 3 (St-3), 4 (St-4) and 5 (St-5). The analysis of the study showed that the average transparency was 13.28 and 32.31 cm in wet and dry season, respectively, while the temperature was observed 25.86 and 18.18?C in wet and dry season, respectively. The observed electrical conductivity (EC) was 84 and 145.67 μs cm^-1, pH was 7.72 and 8.03, dissolve oxygen (DO) was 5.35 and 5.37 mg l^-1, biochemical oxygen demand (BOD) 1.64 and 1.89 mg l^-1 in wet and dry season, respectively. In wet season, the total dissolved solid (TDS) was measured 53.2 mg l^-1, while 73.86 mg l^-1 in dry season. The alkalinity was found 40.94 and 43.4 mg l^-1 in wet and dry season, whereas, the hardness was found 98.47 and 102.46 mg l^-1 in the following seasons. The study showed that most of the water quality parameters of the Tista River were suitable for aquatic organisms as well as fishes. However, the agricultural runoff and waste materials generated from anthropogenic sources could be the main causes of degradation of water quality and aquatic organisms.

Keywords: Tista River, Water quality, Wet -dry season

Location: Rangpur district.

Start Date: 00-09-2013

End Date: 00-02-2014

Program Area: Crop-Soil-Water Management

Commodity: Water quality

Objectives:

(i) To investigate the physicochemical parameters of Tista River water

(ii) To find out the suitability of water for aquatic life.

Methodology:

The study area was located at the Tista River at Kaunia in Rangpur district which was approximately within latitude 24.11920-25.46745 ⁰N and longitude 89.59224-89.26841 ⁰E.The Tista is the most important river in northwest region Bangladesh and originates in the Sikkim valley of the Himalayan Range. It enters Bangladesh near Tin Bigha in Lalmonirhat district. The Tista River is flashy and eroding during monsoon. Total length of the river is 315 km out of which 129 km is inside Bangladesh. The Bangladesh Water Development Board (BWDB) constructed a barrage on this river at Gaddimari of Lalmonirhat district. At Kaunia rail way cum road bridge in Rangpur district, there is a water level and discharge me asuring stations for the Tista River. The study was executed in five different sites at the distance of 1.5 km from each station of Tista River. From each site, samples were collected from five different points of the river. Water samples were collected for physicochemical analysis from those sites in dry season (September to November 2013) and wet season (December 2013 to February 2014). Water sample was collected by plastic bottles with double stoppers. Before the sampling the bottles were proper cleaned and finally rinsed with de-ionized water and dried. After sampling the bottles were screwed and marked with the respective identification number. The different instrumental techniques employed for water quality parameters. The water quality parameters such as pH, temperature, transparency, DO, EC and TDS were measured by pH meter (model-pH Scan WP 1, 2, Malaysia), thermometer (Celsius scale), Secchi disk, DO meter, EC meter (model-HM digital, Germany) and TDS meter, respectively. Alkalinity was measured by titration method with 0.1 N HCl after adding 2 -3 drops of methyl-orange indicator. The EDTA method was used to determine the hard ness of water where Eriochrome Black T was used as indicator and titration with EDTA solution. The Biological Oxygen Demand (BOD) was measured by two steps where initial BOD (BOD₁ ) was measured immediately after collection and after 5 days BOD (BOD ₅₎ was measured by incubation in the dark condition at 20 o C for 5 days. Then the total BOD (BOD₁ - BOD₅ ) was measured. The collected data were compiled and tabulated in proper form and were subjected to statistical analysis. The findings of the study were presented as charts and tabular forms.

Source of Information: J. Environ. Sci. & Natural Resources, 8(1): 29-33, 2014 ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The study observed that all the water quality parameters were suitable in all sampling stations of the river during both seasons. However, due to anthropogenic activities and agricultural runoff would be the main causes of the water quality degradation. To maintain the suitable aquatic environment of the river the study suggests the following measures should be taken: (a) regular monitoring the seasonal variations of the water quality parameters of the Tista River, (b) to ensure the control use of fertilizers and pesticides, (c) illegal dredging and sand extraction must be stopped, (d) halt encroachment, and (e) restoration of fisheries habitat and keep records about fish species and their status.

Knowledge Management: Journal