Navila Moushan | Ahsanullah University of Science and Technology (original) (raw)

Papers by Navila Moushan

Research paper thumbnail of Opportunities and Barriers Against Successive Implementation of Rainwater Harvesting Options to Ensure Water Security in Southwestern Coastal Region of Bangladesh

Frontiers in water, May 20, 2022

The Coastal Region of Bangladesh is surrounded by the acute crisis of safe drinking water. Potabl... more The Coastal Region of Bangladesh is surrounded by the acute crisis of safe drinking water. Potable water scarcity is an acute problem within the coastal regions of Bangladesh. Salinity intrusion in freshwater bodies, arsenic contamination, and low dry season rainfall are some of the reasons behind this deplorable condition. Such is the case in a southwestern district, Satkhira, where safe drinking water is a mirage for people. In this situation, adaptation and utilization of Rainwater Harvesting (RWH) can be considered as a globally sustainable solution among the various technologies to augment freshwater resources. RWH is becoming an integral part of the sustainable water management toolkit gradually. However, some issues are hindering the success of RWH. The absence of technical knowledge, unawareness of hygiene, economic constraints, and lack of training programs on the usage and maintenance of the technology are major reasons for reducing RWH technology's acceptability. This study assessed existing RWHs from several locations of Shyamnagar Upazila of Shatkhira district, incorporating social, economic, and institutional aspects along with policy and application gaps. A mixed-method approach was adopted for the assessment, which included 20 site inspections, questionnaire surveys among the consumers, focus groups discussions with concerning stakeholders, key informant interviews with local government officials. From the outcomes, Strength Weakness Opportunity Threat (SWOT) analysis was done to indicate opportunities and barriers which hinder the success of existing RWHs. We identified RWH as the most appropriate supplementary water source in this region. The substantial factors which enhanced the acceptance of RWH in the water-scarce area were the accessibility of water compared to other sources, improved livelihood potential, security against climate change, and provision from local government and Non-Government Organizations. Furthermore, there was enough quantity of water to support the total water need in household activities.

Research paper thumbnail of Trend analysis of Climate Change in Chittagong Station in Bangladesh

The amount of rainfall received over an area is an important factor in assessing availability of ... more The amount of rainfall received over an area is an important factor in assessing availability of water to meet various demands for agriculture, industry, irrigation, generation of hydroelectricity and other human activities. Over the study period of recent 30 years, trend values of monsoon average rainfall in Chittagong have increased. This paper has measured the correlation coefficients between rainfall and time for Chittagong, where correlation coefficient for Chittagong is positive. In order to check the strength of linear relationship between rainfall and time, P-value has been measured. Due to various factors of Chittagong region of Bangladesh, there is a growing need to study the rainfall, temperature and humidity pattern. This study was checked annual average rainfall of 30 years, temperature of 60 years and humidity of 28 years for this region. It is hoped that this research may be of help to the concerned organizations and experts working on increasing climate variation in Chittagong.

Research paper thumbnail of Opportunities and Barriers Against Successive Implementation of Rainwater Harvesting Options to Ensure Water Security in Southwestern Coastal Region of Bangladesh

Frontiers in water, May 20, 2022

The Coastal Region of Bangladesh is surrounded by the acute crisis of safe drinking water. Potabl... more The Coastal Region of Bangladesh is surrounded by the acute crisis of safe drinking water. Potable water scarcity is an acute problem within the coastal regions of Bangladesh. Salinity intrusion in freshwater bodies, arsenic contamination, and low dry season rainfall are some of the reasons behind this deplorable condition. Such is the case in a southwestern district, Satkhira, where safe drinking water is a mirage for people. In this situation, adaptation and utilization of Rainwater Harvesting (RWH) can be considered as a globally sustainable solution among the various technologies to augment freshwater resources. RWH is becoming an integral part of the sustainable water management toolkit gradually. However, some issues are hindering the success of RWH. The absence of technical knowledge, unawareness of hygiene, economic constraints, and lack of training programs on the usage and maintenance of the technology are major reasons for reducing RWH technology's acceptability. This study assessed existing RWHs from several locations of Shyamnagar Upazila of Shatkhira district, incorporating social, economic, and institutional aspects along with policy and application gaps. A mixed-method approach was adopted for the assessment, which included 20 site inspections, questionnaire surveys among the consumers, focus groups discussions with concerning stakeholders, key informant interviews with local government officials. From the outcomes, Strength Weakness Opportunity Threat (SWOT) analysis was done to indicate opportunities and barriers which hinder the success of existing RWHs. We identified RWH as the most appropriate supplementary water source in this region. The substantial factors which enhanced the acceptance of RWH in the water-scarce area were the accessibility of water compared to other sources, improved livelihood potential, security against climate change, and provision from local government and Non-Government Organizations. Furthermore, there was enough quantity of water to support the total water need in household activities.

Research paper thumbnail of Trend analysis of Climate Change in Chittagong Station in Bangladesh

The amount of rainfall received over an area is an important factor in assessing availability of ... more The amount of rainfall received over an area is an important factor in assessing availability of water to meet various demands for agriculture, industry, irrigation, generation of hydroelectricity and other human activities. Over the study period of recent 30 years, trend values of monsoon average rainfall in Chittagong have increased. This paper has measured the correlation coefficients between rainfall and time for Chittagong, where correlation coefficient for Chittagong is positive. In order to check the strength of linear relationship between rainfall and time, P-value has been measured. Due to various factors of Chittagong region of Bangladesh, there is a growing need to study the rainfall, temperature and humidity pattern. This study was checked annual average rainfall of 30 years, temperature of 60 years and humidity of 28 years for this region. It is hoped that this research may be of help to the concerned organizations and experts working on increasing climate variation in Chittagong.