Effects of water level and climate on the hydrodynamics and water quality of Anvil Lake, Wisconsin, a shallow seepage lake

2018 ◽  
Vol 34 (3) ◽  
pp. 211-231 ◽  
Author(s):  
Dale M. Robertson ◽  
Paul F. Juckem ◽  
Eric D. Dantoin ◽  
Luke A. Winslow
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Seepage Lake

scholarly journals Assessment of the Water Quality of Jatiluhur Reservoir, the Downstream of Citarum Cascade River, Using Selected Physico-Chemical Parameters

2014 ◽  
Vol 10 (1) ◽  
Author(s):  
Lieza Corsita ◽  
Arwin Arwin ◽  
Barti Setiani Muntalif ◽  
Indah Rachmatiah Salami
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Level ◽  
Hydrological Regime ◽  
Quality Parameters ◽  
Biological Data ◽  
Chemical Parameters ◽  
Stream Flows ◽  
Physico Chemical

Physico-chemistry and biological data were investigated  from  October 2010 until April 2011 of Jatiluhur reservoir. A total of six sampling stations were selected for this study. The discharge and hidrological data were obtained from Perum Jasa Tirta II Jatiluhur. The results showed that the hydrological regime in the reservoir Jatiluhur was affected by global phenomenon La Nina events in 2010 and early in 2011. Stream flows were determined during sampling to range from 78  to 482.5 m3/s. The water quality findings were as follows: pH (6.93-8.81), temperature (26.37-30.6°C), dissolved oxygen (0.733-5.2 mg/l), conductivity (2.45-233µmhos/cm), COD (7.36-96.9 mg/l), turbidity (4.063-65.6 NTU), total phosphate (0.002-0.324 mg/l), total nitrogen (0.99-5.96 mg/l), chlorophyl (2.237-43.37 mg/m3), visibility (30-160 cm). The eutrophication was pronounced at Jatiluhur reservoir. Canonical Correspendence Analysis found that some water quality parameters correlated positively with the discharge and the water level.

scholarly journals PEMANTAUAN KUALITAS AIR DI BAGIAN HULU SUNGAI CISADANE DENGAN INDIKATOR MAKROINVERTEBRATA

2017 ◽  
Vol 1 (1) ◽  
pp. 68
Author(s):  
Poltak BP Panjaitan ◽  
Supriyono Eko Wardoyo ◽  
Sofian Rodian
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Human Life ◽  
Research Area ◽  
Middle Level ◽  
Polluted Water ◽  
Chemical Waste ◽  
Middle Point ◽  
Invertebrate Animals

Observation on the Water Quality of Cisadane River in the Upstream Part Using Macroinvertebrates as The Indikator          Water is an important thing for either human life or other creatures on the earth.  Water posses a lot of necesities, among of them is to fullfill domestics, industries, and agriculture. For this purposes people often take from rivers.  River Cisedane is one of rivers that available in Bogor City, having water catchment area of 1100 km2 and is one of main rivers in West Java and Banten Province. One procedure for testing water quality of rivers is to see the invertebrate animals available in the river, because some species are very sensitive for pollution. There were three points in the reserch area that were in upperpart area was Rancamaya, middle area was Pasir Jaya, and the lower area was Situ Gede.  Water quality value index in Rancamaya (Upper part) was 5.42, included middle level of water pollution. In Pasir Jaya (middle point) was 4.75, included polluted water level, and in Situ  Gede (lower prt) was 4.28 included more pollutud water level. Overall of observed research area were the lower part of river the worse pollution available. The pollution available in the research area was caused by domestics waste from inhabitant and other chemical waste from agriculture.Keyword :  Mikroinvertebrata, Cisadane, water quality, upper river part ABSTRAK          Air merupakan salah satu unsur yang sangat penting bagi kelangsungan hidup manusia maupun mahkluk hidup lainnya yang ada di muka bumi. Air memiliki banyak manfaat, diantaranya untuk memenuhi kebutuhan rumah tangga, industri dan pertanian. Untuk memanfaatkan air tersebut biasanya masyarakat mengambil air dari satu sungai pada suatu Daerah Aliran Sungai (DAS). Salah satu DAS yang terdapat di Kota Bogor yaitu DAS Cisadane dengan daerah tangkapan air seluas 1.100 km2, selain itu DAS Cisadane  merupakan aliran sungai utama di Propinsi Banten dan Jawa Barat. Salah satu cara untuk menilai kualitas air sungai adalah dengan melihat keberadaan makroinvertebrata yang hidup di sungai tersebut. Makroinvertebrata dapat memberikan petunjuk adanya pencemar, karena jenis-jenis tertentu sangat peka terhadap pencemaran. Maka berdasarkan hal tersebut penelitian ini akan mengidentifikasi adanya makro-invertebrata di sungai yang merupakan bioindikator kualitas airnya. Tiga titik pengambilan sampel makro-invertebrata di hulu sungai Cisedane yaitu di bagian atas peneltian (Daerah Rancamaya), di bagian tengah penelitian  (Pasir Jaya) dan di bagian bawah penelitian (Situ Gede). Nilai indeks kualitas air di bagian atas penelitian, yaitu di daerah Desa Rancamaya adalah 5,42. Itu menunjukan bahwa kualitas air di daerah tersebut masuk air berpolusi sedang. Pada lokasi penelitian di bagian tengah, yaitu Daerah Desa Pasir Jaya indeks kualitas air nya adalah 4,75. Itu menunjukan bahwa kualitas air di sana masuk air kotor. Sedangkan di bagian bawah penelitian, yaitu daerah Desa Situ Gede indeks kualitas air nya adalah 4,28. Itu menunjukan bahwa kualitas air di sana masuk air kotor. Dari Nilai Indeks Kualitas air di seluruh lokasi hulu sungai penelitian menunjukan bahwa semakin ke bawah kualitas air sungai semakin kotor. Kualitas air di sana diduga diakibatkan oleh sampah atau limbah organik yang berasal dari rumah tangga. Selain itu, kualitas air di sana diduga disebabkan oleh bahan –bahan kimia berbahaya yang berasal dari penggunaan pupuk, pestisida di areal pertanian. Kata kunci : Mikroinvertebrata, Cisadane, kualitas air, hulu.

scholarly journals The hydrodynamic and environmental characteristics of tributary bay influenced by backwater jacking and intrusion of main reservoir

2020 ◽  
Author(s):  
Xintong Li ◽  
Bing Liu ◽  
Yuanming Wang ◽  
Yongan Yang ◽  
Ruifeng Liang ◽  
...  
Keyword(s):  
Water Quality ◽  
Flow Field ◽  
Water Level ◽  
Water Environment ◽  
Quality Model ◽  
Environmental Characteristics ◽  
Concentration Boundary ◽  
The Three Gorges ◽  
Regional Boundary

Abstract. The construction of large reservoirs results in the formation of tributary bays, and tributary bays are inevitably influenced by the backwater jacking and intrusion of the main reservoir. The hydrodynamic conditions and the environmental factors of tributary bays exhibit complex distribution characteristics and eutrophication occur frequently. Thus, exploring the distribution and evolution of the hydrodynamic and water environment characteristics of tributary bays in response to backwater jacking and intrusion is the key to solving eutrophication and other problems relevant to water environment. In this paper, a typical tributary bay (Tangxi River) of the Three Gorges Reservoir (TGR) was selected to study the hydrodynamic and environmental characteristics of the tributary bay influenced by the jacking and intrusion of the main reservoir. The flow field, water temperature and water quality of the Tangxi River were simulated using the hydrodynamic and quality model CE-QUAL-W2, and the eutrophication status of the tributary bay was also evaluated. The results showed that the main reservoir had different effects on its tributary bay in each month. The tributary bay was mainly affected by backwater jacking of the main reservoir when the water level dropped and by intrusion of the main reservoir when the water level rose. An obvious quality concentration boundary existed in the tributary bay, which was basically consistent with the regional boundary in the flow field. The flow field and water quality on both sides of the boundary were quite different. The results of this study can help us figure out how the backwater jacking and intrusion of the main reservoir influence the hydrodynamic and water environment characteristics of the tributary bay and provide guidance for water environment protection in the tributary bays.

scholarly journals Analysis of the effects of the stream confluence on the Alagoas Aqueduct

RBRH ◽  
2018 ◽  
Vol 23 (0) ◽  
Author(s):  
Jerônimo Leoni Leandro Lima ◽  
Vladimir Caramori Borges de Souza
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Drainage System ◽  
Potential Effect ◽  
Semiarid Region ◽  
Flow Discharge ◽  
Social And Economic Development ◽  
Level Elevation ◽  
Water Elevation

ABSTRACT The project of the Canal do Sertão (Alagoas Aqueduct) is an important step toward social and economic development in the semiarid region of Alagoas State in Brazil. Therefore, a hydrodynamic assessment in the canal is necessary due to a complex drainage system under parameters that were not considered during the project design and execution, mainly along the reach km 67, where it is located a convergent confluence and an overchute structure. The analysis conducted in this study addressed three main aspects: i) verify possible risks to the water quality of the canal, pumped from São Francisco River; ii) evaluate scenarios with risks to the canal structure due a convergent confluence between Riacho Seco and the stream of the tributary basins, which flows over a drainage structure crossing the canal at km 67.28; and iii) analyze the water level elevation into the overchute structure, submerged during flood events, and the water level elevation in the upstream reach of the confluence of the Riacho Seco, with a length of 620 m parallel to the canal and separate by a distance of 80 m from each other, where the level may rise reaching the left levee of the canal. Thus, were assessed the potential effect of the Riacho Seco confluence with the flow discharge of the tributary basins on the overchute structure at km 67.28 of the Canal do Sertão. The analysis of the water elevation and its possible risks to the water quality and the canal structure for different flood scenarios were performed by using the hydrodynamics models HEC-HAS. It was noticed that there is an elevation of the water surface of the tributary streams in the upstream reaches of the convergent confluence and that the drainage structure over the canal do Sertão fails for flow discharge with a return period of 50 years or more, overflowing the water from the drainage system into the channel.

Trend and abrupt change analysis in water quality of Urmia Lake in comparison with changes in lake water level

2020 ◽  
Vol 192 (10) ◽  
Author(s):  
Mohammad Taghi Sattari ◽  
Rasoul Mirabbasi ◽  
Salar Jarhan ◽  
Fatemeh Shaker Sureh ◽  
Sajjad Ahmad
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Lake Water ◽  
Abrupt Change ◽  
Urmia Lake ◽  
Change Analysis ◽  
Lake Water Level ◽  
Abrupt Change Analysis

Monitoring approach to evaluate water quality of intermittent lake Cerknica

1996 ◽  
Vol 33 (4-5) ◽  
pp. 357-362
Author(s):  
Alenka Gaberšcik ◽  
Olga Urbanc-Bercic
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Main Flow ◽  
Specific Nature ◽  
Pollution Effects

The article presents the monitoring approach that is used to evaluate water quality of the intermittent Lake Cerknica and its tributaries. The results show that specific nature of Lake Cerknica influences the extent of the pollution. When regular gradual changes in water level occur the pollution effects can be buffered. The consequence of immediate decrease of water level is severe pollution of the main flow. The springs of the carstic tributaries are already loaded with pollutants which are transferred through underground pathways from neighbouring regions.

scholarly journals Assessment of the Water Quality of Lake Plastira through Mathematical Modelling for Alternative Management Scenarios

2013 ◽  
Vol 5 (2) ◽  
pp. 99-105
Keyword(s):  
Water Quality ◽  
Water Level ◽  
Water Body ◽  
Water Quality Management ◽  
Water Levels ◽  
Biological Processes ◽  
Management Scenarios ◽  
Elasticity Of Demand

In the context of a research program regarding water quality management and protection plan for Lake Plastira, one of the main tasks was the establishment of a sound relationship between the minimum water level and the trophic state of the lake. The study involves the application of a eutrophication-dissolved oxygen mathematical model (EUTRO-SEL) which describes various physical, chemical and biological processes taking place in a water body. Three water management scenarios were examined in the context of the study, based on alternative minimal operating water levels (782m, 784m and 786m). According to the modelling results and the classification of the water bodies according to the recent standards and trends within the European Commission, the operation of Lake Plastira at a minimum water level of 786 m ensures very good water quality characteristics (Category I). The operation of the Lake Plastira at lower water levels between 782-784 m, results in acceptable water quality that classify the lake into Category II. Since in all three management scenarios the water quality is acceptable and describes a water body with at least good water quality, acceptable minimum operational water level, can be determined by other considerations (e.g. elasticity of demand, lanscape aesthetics, etc).

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