Relationship between macrobenthos and abiotic characteristics of river Alaknanda in a stretch from Chamoli to Devprayag in Garhwal Himalayan region of Uttarakhand, India (original) (raw)
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The paper attempts to analyze, interpret, compare and contrast water quality of selected environmental parameters of the Subansiri river in the eastern Himalayas and the Alaknanda river in the western Himalayas. Standard methodologies (APHA, 1995) are adopted to analyze the data and obtain the values for the samples of both the rivers in summer season. The results of the analysis are compared with the drinking water quality standards such as WHO and BIS. It is found from the study that the water quality parameters show a similar trend in case of the ph and electrical conductivity but most of the parameters show dissimilarities in the eastern and western Himalayan basins.
The Ecoscan 10(1&2), 2016
The present work deals with the assessment of the Water Quality Index (WQI) of the ground water (hand pumps) as well as surface water (Budhi Gandak River) in Khagaria town, Bihar in order to ascertain the quality of water for public consumption, recreation and other purposes. In this study, WQI was determined on the basis of seasonal variations in important water quality parameters such as pH, temperature, total dissolved solids (TDS), electrical conductivity (EC), total hardness (TH), bicarbonate (HCO3-), phosphate (PO4-P), nitrate (NO3-N ), chloride (Cl-) and turbidity. The results in the present study indicated that most of the water quality parameters analyzed were within the WHO and BIS limits for drinking water except turbidity values that exceeded permissible limit in surface water and some samples of ground water. WQI values of surface water at all the three sites in all the three seasons were categorized in Excellent (40.09-42.35), Good (52.09-99.13) and Poor (103.67-126.76) categories whereas ground water samples in Excellent (42.9249.85) and Good (51.23-73.79) categories. WQI was in good correlation with phosphate and turbidity in all the three seasons at all the three sites. The study suggests that river water is not suitable for human consumption during monsoon months. Ground water is suitable for drinking in all the three seasons at all the three sites.
Assessment of Water Quality of a Transboundary River at Brahmanbaria
Bangladesh Journal of Zoology
This investigation was undertaken to evaluate some physico-chemical parameter of water of the trans-boundary Haora River in Brahmanbaria during October 2018 to September 2019 from three different sites. The study revealed that air temperature at three different sites ranged 13 – 38 °C while the water temperature was 11 – 32 °C. Transparency of water varied from 18 – 55 cm Secchi depth and became more turbid during monsoon. The average values of pH and dissolved oxygen (DO) both in sites and seasons were within the standard limits for aquatic organisms. Total dissolved solids (TDS) were found between 77 and 352 mg/L and varied greatly in seasons. Electric conductivity (EC) was ranged 135 to 650 μS/cm. On the other hand, maximum and minimum hardness of water were recorded as 322 mg/L and 118 mg/L respectively and become lowest in monsoon. The rainy season bear high torrential water which brought huge amount of different types of garbage through the water flow from the Indian part. Mos...
The present study was carried out to assess the water quality of Manawar Tawi river of Rajouri during May 2013 to April 2014 in four different seasons viz. Summer (March to June), Monsoon (July-August), Post Monsoon(September to October) and Winter (November to February). Two stations were identified on the basis of anthropogenic load viz. Station I & Station II. Water samples were analyzed for physicochemical parameters including: Phosphate from two different stations. The results revealed seasonal variations in the Physico-chemical parameters at Station I & Station II and further investigations showed that water was clear with high values of pH and DO and low values of FCO2, TDS, TSS and BOD at Station 1 while at Station II high values of BOD, nitrates, chlorides, free CO2, TDS but low value of DO & pH indicated pollution load. The comparative study showed that the water quality of the Manawar Tawi was degraded due to the presence of significant amount of pollutants discharged from Rajouri city at Station II so water is not potable at this site. To maintain the healthy ecosystem of the river there is a need for proper management and monitoring of water quality of the river.
A review of the water quality indices of riverine ecosystem, Bangladesh
Archives of Agriculture and Environmental Science, 2022
Rivers have been the most important freshwater resource, and our ancient civilizations have flourished along the banks of rivers. River water finds multiple uses like agriculture, industry, transportation, aquaculture, and public water supply. Natural waters are being contaminated as the quality of water is being affected by anthropogenic activities, in developing countries like Bangladesh. From the point of view, the physicochemical parameters (water temperature, pH, electrical conductivity, total dissolved solids, DO, BOD, alkalinity, total hardness, nitrate) of seventeen rivers in Bangladesh were reviewed from January 2021 to June 2021. The water quality parameters of some rivers were found to be far above the suitable limits, which is dangerous for human health, agriculture, and fisheries. It is therefore necessary to check the water quality at regular interval of time to conserve the natural ecosystem of the rivers of Bangladesh. Furthermore, this study would help to create and...
Assessment of spatial variation in water quality of Doodhganga stream in Kashmir Himalaya
The present study was carried out during April 2018 to assess the spatial variability in water quality of Doodhganga-a stream in Kashmir Himalaya and the assessment of land use land cover (LULC) of the four selected sites [Yousmarg (Site-A), Nowhar (Site-B), Chadoora (Site-C) and Barzulla (Site-D)] based on differential anthropogenic pressures. At each site samples were collected from three locations (which served as three replications) and data was represented as mean value of all locations. At Site-A (comparatively clean site), the mean value of parameters viz. temperature, pH, electrical conductivity, BOD, total hardness, sulphate, orthophosphate and ammonical nitrogen increased significantly downstream with minimum mean value recorded as 10 ±0.1 • C, 7.7 ±0.02, 72.2 ±0.06 µScm-1 , 1.5 ±0.5mgL-1 , 67.2 ±0.5mgL-1 , 9.2 ±0.2mgL-1 , 0.09 ±0.01mgL-1 and 0.53 ±0.01mgL-1 respectively. On the other hand maximum mean value for all these parameters viz. 20.6 ±0.03 • C, 8.1 ±0.01, 179.8 ±0.23 µScm-1 , 3.5 ±0.06mgL-1 , 259.2 ±0.5mgL-1 , 29.6 ±0.3mgL-1 , 0.35 ±0.01mgL-1 and 0.82 ±0.01mgL-1 where recorded at SiteD. Similarly, dissolved oxygen recorded maximum mean value at Site-A (8.6 ±0.08mgL-1) and decreased significantly downstream and its minimum mean value was recorded at SiteD (6.0 ±0.5mgL-1). Land use/land cover (LULC) of Doodhganga watershed revealed considerable change in some LULC classes during the selected time period (2000-2018). Total share of area under agricultural field, mixed plantation, water body and wetlands reduced by 3.23%, 1.61%, 0.14% and 0.04% respectively. On the other hand, built up, and horticulture/orchards increased by 3% and 1.46% respectively. Change in physico-chemical characteristics of water of Doodhganga stream elucidates increased pollution load downstream.