scholarly journals Human activity impact on surface water quality in semi-arid regions: a case study of Aïnzeda lake (North-East Algeria)

2020 ◽  
Vol 20 (5) ◽  
pp. 1726-1744
Author(s):  
Abdelhafid Mebarkia ◽  
Abdelmadjid Boufekane
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Human Activity ◽  
Arid Regions ◽  
Surface Water Quality ◽  
Unequal Distribution ◽  
North East ◽  
The Impact ◽  
Semi Arid

Abstract Water resources scarcity in Algeria, their fragility and their unequal distribution have resulted in a serious shortage, which, in spite of all the efforts, seems inevitable. This study consists of evaluating the impact of human activity on the water quality of Aïnzeda lake (NE Algeria), a typical case study of the difficulties posed by the problem of surface water quality in semi-arid regions. Principal component analysis (PCA) and the trend method were applied to interpret the physico-chemical data of monthly analyzed samples, over a 25-year period (1988–2012). The trend method results show that most chemical elements have a direct relationship with urbanization and agricultural practices in the area. The change in the watershed climatic conditions (increase of 9% in air temperature, 7% in the lake water temperature, and decrease of 8% in precipitation) is also responsible for the degradation of the water quality. The PCA shows that salinization (51.73%), and anthropogenic and agricultural pollution (13.49%) are the most significant degradation factors. These two approaches have enabled us to prove that aridity and anthropogenic or agricultural activities have a negative impact on the lake's surface water quality.

scholarly journals Review on the Environmental Impact of Saw Mill Waste Discharges in Nigeria

2018 ◽  
Vol 1 (March 2018) ◽  
Author(s):  
O.K Fagbenro ◽  
K Abdulfatai
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Developing Nations ◽  
Wood Products ◽  
Aquatic Biota ◽  
Natural Conditions ◽  
The Impact ◽  
Mill Waste

Saw mill is basic to the manufacture of wood products and is therefore considered very relevant as it is almost impossible to avoid the use of wood or its products in any given household. Although the development of this industry brings great gain, providing employment, sources of livelihood and products which gives comfort, it is yet associated with environmental pollution. The aim of this review is thus to establish the influence of waste generated from the saw mill on the environment and surface water quality in particular, using the Nigerian situation as a case study for other developing nations. Studies have shown that pollution from inappropriate storage and disposal of saw mill waste is not only physical but chemical as well. The manufacture of wood, especially those meant for external use or where they may be subjected to harsh artificial or natural conditions such as weather often requires its treatment with chemicals for preservation. These chemicals may be toxic or possess sufficient capacity to interfere with health or the aquatic biota when exposed. A review of previous studies on the impact of saw mill waste discharges on water quality has shown that surface water qualities especially is compromised when exposed to these waste.

Surface Water Quality Assessment. Case Study: Târnava Mare River, Mediaș Town-Romania

2011 ◽  
Vol 4 (5) ◽  
pp. 70-72
Author(s):  
Cristina Roşu ◽  
◽  
Ioana Piştea ◽  
Carmen Roba ◽  
Mihaela Mihu ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment

scholarly journals Impact of Controlled Drainage and Subirrigation on Water Quality in the Red River Valley

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 308
Author(s):  
Kristen Almen ◽  
Xinhua Jia ◽  
Thomas DeSutter ◽  
Thomas Scherer ◽  
Minglian Lin
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Drainage Water ◽  
River Valley ◽  
Red River ◽  
Nutrient Loss ◽  
Controlled Drainage ◽  
Red River Valley ◽  
The Impact

The potential impact of controlled drainage (CD), which limits drainage outflow, and subirrigation (SI), which provides supplemental water through drain tile, on surface water quality are not well known in the Red River Valley (RRV). In this study, water samples were collected and analyzed for chemical concentrations from a tile-drained field that also has controlled drainage and subirrigation modes in the RRV of southeastern North Dakota from 2012–2018. A decreasing trend in overall nutrient load loss was observed because of reduced drainage outflow, though some chemical concentrations were found to be above the recommended surface water quality standards in this region. For example, sulfate was recommended to be below 750 mg/L but was reported at a mean value of 1971 mg/L during spring free drainage. The chemical composition of the subirrigation water was shown to have an impact on drainage water and the soil, specifically on salinity-related parameters, and the impact varied between years. This variation largely depended on the amount of subirrigation applied, soil moisture, and soil properties. Overall, the results of this study show the benefits of controlled drainage on nutrient loss reduction from agricultural fields.

scholarly journals Predictive scenarios for surface water quality simulation - A watershed case study

CATENA ◽  
2018 ◽  
Vol 170 ◽  
pp. 283-289 ◽  
Author(s):  
I.M.H.R. Antunes ◽  
M.T.D. Albuquerque ◽  
S.F. Oliveira ◽  
G. Sánz
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Water Quality Simulation
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