Management of natural lake water resources: problems and solutions

2012 ◽  
Author(s):  
Arkadi Parparov ◽  
Gideon Gal
Keyword(s):  
Water Resources ◽  
Lake Water ◽  
Natural Lake ◽  
Problems And Solutions

scholarly journals An Overview on Water Quality Trending for Lake Water Classification in Malaysia

2018 ◽  
Vol 7 (3.23) ◽  
pp. 5
Author(s):  
Muhammad Muzzammil Shahabudin ◽  
Sabariah Musa
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Lake Water ◽  
Quality Index ◽  
Water Quality Assessment ◽  
Lake Water Quality ◽  
Water Classification ◽  
Quality Classification ◽  
Water Quality Classification ◽  
Quality Assessments

Lake water is important to all life and surroundings with multiples benefits and forms either in natural or man-made conditions. One of the most well-known tools for assessing the water quality is Water Quality Index (WQI) and widely used including Malaysia. Lake water quality should be represented in lucid way like other surface water regarding to the WQI standards for water quality assessment on lakes. This paper aims to review on lake water quality classification and its uses based on WQI standards in Malaysia. In this review, the uses of WQI for assessing the lake water and functioned of lakes are discussed. Results on pH from 5.0 to 9.2, BOD in mg/l from 0 to 180, COD in mg/l from 5 to 150, SS in mg/l from o to 1800, DO in mg/l from 0 to 8 and AN in mg/l N from -1 to 26. Variety of numbers is due to different loading of pollutions and location. With used of WQI on lake water quality assessments, further action can be taken for the uses on water resources by maintaining the quality. It also will broaden the uses of lake water as alternative of water resources in Malaysia.  

Bench-scale Study on the Removal of TiO2Nanoparticles in Natural Lake Water by Coagulation

2017 ◽  
Vol 46 (12) ◽  
pp. 1846-1848 ◽  
Author(s):  
Chunpeng Zhang ◽  
Ye Fan ◽  
Xuege Wang ◽  
Xin Xing ◽  
Xiaochen Chen ◽  
...  
Keyword(s):  
Lake Water ◽  
Bench Scale ◽  
Natural Lake

scholarly journals Improved Landsat-Based Water and Snow Indices for Extracting Lake and Snow Cover/Glacier in the Tibetan Plateau

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1339 ◽  
Author(s):  
Dajiang Yan ◽  
Chang Huang ◽  
Ning Ma ◽  
Yinsheng Zhang
Keyword(s):  
Water Resources ◽  
Tibetan Plateau ◽  
Snow Cover ◽  
Lake Water ◽  
The Tibetan Plateau ◽  
Water Index ◽  
Normalized Difference Water Index ◽  
Two Indices ◽  
Normalized Difference Snow Index ◽  
Physical Principles

Identifying water and snow cover/glaciers (SCG) accurately is of great importance for monitoring different water resources in the Tibetan Plateau. However, discriminating between water and SCG remains a difficult task because of their similar spectral characteristic according to the physical principles of remote sensing. To efficiently distinguish different kinds of water resources automatically, here we proposed two new indices including: (i) the normalized difference water index with no SCG information (NDWIns) to extract lake water and suppress SCG: and (ii) the normalized difference snow index with no water information (NDSInw) to extract SCG and suppress lake water. Both new water and snow indices were tested in the Tibetan Plateau using Landsat series, showing that the overall accuracies of NDWIns and NDSInw were in the range of 94.6–97.0% and 94.9–97.0% in mapping the lake water from SCG and mapping the SCG from lake water, respectively. Further comparisons suggest that these new two indices improved upon the previous normalized difference snow index/modified normalized difference water index (NDSI/MNDWI) in mapping the water body and SCG. While the present study only focuses on the validation over certain areas in Tibetan Plateau, the newly proposed NDWIns and NDSInw have the potential for better monitoring the lake water and snow/glacier areas over other cold regions around the globe.

scholarly journals Climate change and lake water resources in Sub-Saharan Africa: case study of lake Chad and lake Victoria

2017 ◽  
Vol 36 (2) ◽  
pp. 648
Author(s):  
D. A. Yunana ◽  
A. A. Shittu ◽  
S. Ayuba ◽  
E. J. Bassah ◽  
W. K. Joshua
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Lake Water ◽  
Lake Victoria ◽  
Sub Saharan Africa ◽  
Lake Chad ◽  
Sub Saharan
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