scholarly journals Eutrophication mechanism of Asahikawa Dam reservoir and downstream propagation of water quality.

1995 ◽  
Vol 24 (4) ◽  
pp. 203-206
Author(s):  
Osami KAWARA ◽  
Hiroshi NAGO ◽  
Shigeru TAKASUGI
Keyword(s):  
Water Quality ◽  
Dam Reservoir

scholarly journals The Use of Biological Indices for the Assessment of the River Quality (Ruda River, Poland)

2017 ◽  
Vol 24 (2) ◽  
pp. 285-298 ◽  
Author(s):  
Aneta Spyra ◽  
Justyna Kubicka ◽  
Małgorzata Strzelec
Keyword(s):  
Water Quality ◽  
Benthic Invertebrates ◽  
Ecological Status ◽  
Field Studies ◽  
Human Pressure ◽  
Dam Reservoir ◽  
River Quality ◽  
Water Field ◽  
Study Sites

AbstractRecognition of the deteriorating conditions of rivers worldwide has called for increased efforts to improve the ecological quality of impacted river systems. This is particularly important in areas that have suffered from a significant impact of human pressure on the ecological status of water. Field studies were conducted in the Ruda River in an area that had undergone anthropogenic disturbances. The objectives of our survey were to test the biological metrics based on benthic macroinvertebrates at four study sites. Spring and autumn surveys of benthic invertebrates indicated that based on the BMWP and BMWP(PL) indices, water quality was higher in comparison with the value of Multimetric index at all of the sites that were studied. Our results revealed that the water quality was higher at the study sites that are located above the dam reservoir based on both the chemical and biological parameters. This study also indicated that both spring and autumn constitute appropriate periods for carrying out monitoring studies. The values of multimeric index indicated the same water quality (except for site 1) in both sampling periods. Anthropogenic transformations of a riverbed influence the flora and fauna and affect the ecological status of rivers.

scholarly journals Continuous and Periodic Monitoring System of Surface Water Quality of an Impounding Reservoir: Sulejow Reservoir, Poland

2019 ◽  
Vol 16 (3) ◽  
pp. 301
Author(s):  
Aleksandra Ziemińska-Stolarska ◽  
Mirosław Imbierowicz ◽  
Marcin Jaskulski ◽  
Aleksander Szmidt ◽  
Ireneusz Zbiciński
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Monitoring System ◽  
Online Monitoring ◽  
Surface Water Quality ◽  
Dam Reservoir ◽  
Reservoir Water ◽  
Periodic Monitoring

Keywords: online monitoring; dam reservoir; water quality; multi-parameter probe; eutrophication

scholarly journals Water Quality Study at Sembrong Dam Reservoir in Johor

2015 ◽  
Vol 773-774 ◽  
pp. 1370-1374 ◽  
Author(s):  
Halizah Awang ◽  
Zawawi Daud ◽  
Mohd Zainuri Mohd Hatta
Keyword(s):  
Water Quality ◽  
Riparian Vegetation ◽  
Organic Load ◽  
Dam Reservoir ◽  
Lowland Rivers ◽  
Shallow Reservoir ◽  
Physical Chemical ◽  
Wide Range ◽  
Human Need ◽  
The Right

Rivers play a major role for communities especially in fisheries and as a source of water for people residing within the vicinity. Water quality is of utmost importance and it covers a wide range of approaches and conflicts. Water is super abundant on the planet, as whole, but fresh potable water is not always available at the right time or the right place for human or ecosystem use [3]. Water quality refers to the physical, chemical and biological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose. It is most frequently used by reference to a set of standards against which compliance can be assessed. Sembrong dam reservoir was built by damming a river. When a reservoir is built along a river’s flow, the physical, chemical and biological conditions of the river are disrupted to some degree [2]. Since Sembrong dam reservoir is constructed on large lowland rivers with gradually sloping banks, it can be characterized by inundation of large areas, extreme horizontal variability with extensive shallows riparian vegetation and shallow reservoir. Such reservoir is usually eutrophic and high natural organic load are likely to contribute to the formation of an anoxic hypolimnion [9]. Shallow reservoir is usually well mixed by wind, and this leads to non-stratified condition [7]. Therefore, Sembrong dam reservoir can be categorized as shallow unstratified reservoir.

Use of the preliminary Jedlice Reservoir for water protection in the Turawa Reservoir on the Mała Panew River

2009 ◽  
Vol 38 (1) ◽  
Author(s):  
Mirosław Wiatkowski ◽  
Izabela Czerniawska-Kusza
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Benthic Community ◽  
Algal Blooms ◽  
Water Protection ◽  
Benthic Community Structure ◽  
Dam Reservoir ◽  
Physico Chemical

Use of the preliminary Jedlice Reservoir for water protection in the Turawa Reservoir on the Mała Panew RiverPhysico-chemical variables of water quality and benthic community structure were assessed in order to evaluate the need for reinstating the use of the preliminary Jedlice Reservoir. The waters of the Mała Panew River carry a significant load of nutrient compounds, particularly nitrates and phosphates. Deteriorating water quality results in permanent algal blooms and changes in the macrofauna structure. It was confirmed that the use of a preliminary reservoir could contribute to the protection of the Turawa Dam Reservoir against pollutants transported by the waters of the Mała Panew River.

scholarly journals The environmental importance of Pinheirinho wetland for water quality in the dam reservoir of Jundiaí Mirim River - SP

2017 ◽  
Author(s):  
Lirian Lourenço Segabinassi ◽  
Claudia Aparecida Longatti ◽  
Naita Aparecida Zerbianti ◽  
Ana Carolina Barros de Gennaro Veredas
Keyword(s):  
Water Quality ◽  
Dam Reservoir ◽  
Environmental Importance

scholarly journals Changes in the quality of a small lowland river in Poland under the influence of pollution and a dam reservoir located in its course

2020 ◽  
Vol 20 (3) ◽  
pp. 145-159
Author(s):  
Donat Hansz ◽  
Katarzyna Kowalczewska-Madura
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
External Loading ◽  
Lowland River ◽  
Dam Reservoir ◽  
Agricultural Areas

AbstractThe study on a small lowland river was conducted in order to determine changes in water quality under external loading (inflow of treated wastewater, runoff from agricultural areas) and the location of a dam reservoir in its course. The 21 km long River Pogona (Greater Poland, Poland) is a small tributary of the Obra Canal in Kościan. In 2004, in its valley, the Jeżewo Reservoir, with an area of 78 ha, was utilized to supply the flow in the Obra Canal during the dry season and to irrigate agricultural areas. The river is also a receiver of treated sewage from the sewage treatment plant in Karolewo. The research, carried out in 2017 at six sampling stations in its course, showed that the discharge of treated wastewater resulted in an increase in conductivity, concentration of ammonium nitrogen, nitrites and total nitrogen in the waters of the River Pogona. On the other hand, the location of the Jeżewo Reservoir in its course contributed to an increase in water temperature, pH, dissolved oxygen, chlorophyll-a and nitrite concentration in the outflowing river. The results showed that the inflow of treated wastewater from the sewage treatment plant, surface runoff from the catchment area and the Jeżewo Reservoir formed in its course, influenced seasonal and spatial changes in the water quality of the River Pogona.

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