scholarly journals Water quality index including periphyton chlorophyll-a in forested urban watersheds from Tierra del Fuego (Argentina)

2021 ◽  
Vol 126 ◽  
pp. 107614
Author(s):  
María Granitto ◽  
Soledad Diodato ◽  
Patricia Rodríguez
Keyword(s):  
Water Quality ◽  
Chlorophyll A ◽  
Water Quality Index ◽  
Quality Index ◽  
Tierra Del Fuego ◽  
Urban Watersheds

Developing a water quality index in a tropical reservoir using a measure of multiparameters

2018 ◽  
Vol 8 (4) ◽  
pp. 752-766 ◽  
Author(s):  
Alberto Quevedo-Castro ◽  
Jesús G. Rangel-Peraza ◽  
Erick Bandala ◽  
Leonel Amabilis-Sosa ◽  
Abraham Rodríguez-Mata ◽  
...  
Keyword(s):  
Water Quality ◽  
Sensitivity Analysis ◽  
Chlorophyll A ◽  
Total Phosphorus ◽  
Water Quality Index ◽  
Quality Index ◽  
Organic Nitrogen ◽  
Oxygen Demand ◽  
Fecal Coliforms ◽  
Tropical Reservoir

Abstract A water quality index (WQI) for the Adolfo López Mateos Dam (ALMD) was developed based on statistical multiparameter tools assisted with linear programming. ALMD was selected due to its social and economic significance in Sinaloa, the state with the highest agricultural production in Mexico. Twenty-six water-quality parameters were analyzed for four sampling points distributed along the dam during 2012–2017. The data were analyzed using Pearson's correlation matrix, principal components analysis (PCA) and sensitivity analysis (SA). Results indicated that variables explaining spatial and temporal water quality distribution at ALMD were total suspended solids, fecal coliforms, pH, dissolved oxygen, chemical oxygen demand, nitrate nitrogen, organic nitrogen, ammonium nitrogen, total phosphorus, orthophosphates and chlorophyll a. A series of pondering weights (Wi) were obtained from the PCA analysis. Every Wi was multiplied by the probability function of the specific parameter (SIi) to generate the WQIALMD model. The model was applied to address water quality at ALMD which describes the general overall water quality in the dam as ‘good’. Finally, a sensitivity analysis for the model showed that the most sensitive WQI variables were: fecal coliforms, total phosphorus, organic nitrogen, and chlorophyll a.

GEOPHYSICAL AND WATER QUALITY INDEX SURVEYS OF GROUNDWATER QUALITY AROUND UGBOR DUMPSITE IN BENIN CITY, EDO STATE, NIGERIA, WEST AFRICA.

2016 ◽  
Vol 12 (3) ◽  
pp. 4383-4393
Author(s):  
Osabuohien Idehen
Keyword(s):  
Water Quality ◽  
Groundwater Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Dry Season ◽  
Depth Range ◽  
Benin City ◽  
Physico Chemical ◽  
Vertical Electric Sounding ◽  
Geoelectric Layer

This study takes a look into groundwater quality at Ugbor Dumpsite area using water quality index (WQI), 2-Dimensional (2-D) geophysical resistivity tomography and vertical electric sounding (VES).The geophysical resistivity methods employed revealed the depth to aquifer, the geoelectric layers being made up of lateritic topsoil, clayed sand and sand. Along the trasverse line in the third geoelectric layer of lateral distance of 76 m to 100 m is a very low resistivity of 0.9 to 13 m from a depth range o f about 3 to 25 m beneath the surface- indicating contamination. Water samples were collected and analyzed at the same site during the raining season and during the dry season. The value of water quality index during the raining season was 115.92 and during the dry season was 147.43. Since values at both seasons were more than 100, it implies that the water is contaminated to some extent and therefore poor for drinking purpose. The Water Quality Index was established from important analyses of biological and physico-chemical parameters with significant health importance. These values computed for dumpsite area at Ugbor were mostly contributed by the seasonal variations in the concentrations of some parameters, such as, conductivity, total dissolved solids, hardness, alkalinity, chlorides, nitrates, calcium,  phosphates, zinc, which showed significant differences (P<0.01 and P<0.05) in seasonal variation.

PEMETAAN STATUS KUALITAS SUMBERDAYA AIR PERMUKAAN DI KOTA BOGOR DAN UPAYA PENGELOLAANNYA MENUJU KOTA SENSITIF AIR

2019 ◽  
Vol 3 ◽  
pp. 627
Author(s):  
Muhammad Ramdhan ◽  
Suria Darma Tarigan ◽  
Yuli Suharnoto ◽  
Hadi Susilo Arifin
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Total Dissolve Solid ◽  
Total Coliform

erkembangan Kota Bogor tidak bisa dilepaskan dari keberadaan dua sungai utama yang melewatinya, yaitu Sungai Ciliwung dan Sungai Cisadane. Aktivitas penduduk di sekitar Daerah Aliran Sungai (DAS) Sungai Ciliwung dan Sungai Cisadane sangat berpengaruh terhadap kualitas air sungai, karena sebagian dari limbah buangan hasil aktivitas tersebut langsung dibuang disungai. Analisa ini bertujuan untuk mengetahui kualitas air Sungai Ciliwung dan Sungai Cisadane Kota Bogor pada tahun 2017. Data yang digunakan dari pengambilan sampel air di lapangan pada bulan Agustus di 10 titik pengamatan. Selanjutnya hasil dianalisa menggunakan Metode Water Quality Index (WQI). Parameter yang digunakan meliputi Temperatur, Total Dissolve Solid, Turbiditas, pH, DO, Nitrit, Amonia, Fosfat, Minyak dan Lemak serta Total Coliform. Parameter tersebut dianalisa secara insitu menggunakan alat portable Water Quality Checker juga melalui analisis laboratorium. dan hasilnya bahwa kualitas air yang masuk ke Kota Bogor mengalami penurunan setelah melewati area Kota Bogor.

Evaluation of Ground Water Quality For AL Shuwayja area –Wasit Provence Using GIS Technique

2017 ◽  
Vol 1 (2) ◽  
pp. 1-11
Author(s):  
Ali Nasser Hilo
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Ground Water ◽  
Water Quality Index ◽  
Quality Index ◽  
Poor Quality ◽  
Quality Parameters ◽  
Ground Water Quality ◽  
Water Index ◽  
The City

The low level of water in rivers in Iraq leads to poor water quality, on that basis; we need to assess Iraq's water resources for uses of irrigation and drinking water. This study present a model accounts for ground water quality by using a water quality index (WQI) for the region defined between the city of Kut and the city of Badra in Wasit province. this study relies on a system of wells set up along the path through the Badra –Kut  and around it  up to 78 wells. The study showed poor quality of ground water in the region of study and it is unsuitability for irrigation and drinking water, as well as provided a solution to the water accumulated in the Shuwayja to reduce the bad effect on groundwater by using a system of branch and collection canals  then pumping at the effluent  of Al  Shuwayja in seasons of rainy season ..Water quality index calculated depend on the basis of various physic-chemical parameters as PH, Ec , TDS, TSS, Nacl , SO4 ,Na , and  Mg. The resultant and analytical are present with use of Arch GIS program – geostastical analysis for the water index and water quality parameters

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