An alternative approach for evaluation of lake water quality: Lake Sapanca – a case study from Turkey

1996 ◽  
Vol 34 (12) ◽  
pp. 73-81 ◽  
Author(s):  
B. Beler Baykal ◽  
I. E. Gönenç ◽  
M. Meriç ◽  
A. Tanik ◽  
O. Tunay
Keyword(s):  
Water Quality ◽  
Nutrient Concentrations ◽  
Lake Water Quality ◽  
Technical Standards ◽  
Nutrient Sources ◽  
Detailed Classification ◽  
Alternative Approach ◽  
Critical Issues ◽  
Rational Management

Lake Sapanca is the major water resource supplying drinking water as well as water for industrial and agricultural uses for one of the more industrialized areas of Turkey. Currently, the sustainability of its beneficial use is an issue of concern. Initially the water quality in the lake was classified according to the Turkish Regulations. With this conventional approach, a detailed water quality evaluation could not be achieved due to certain drawbacks, and this required the search for a new approach. Therefore, a more detailed classification was accomplished by taking German Technical Standards as a basis that would lead to more usable and understandable classification necessary to promote a rational management strategy. Both classifications dictate that classes 1 and 2 may be used for water supply effectively. The detailed classification indicates that at present water quality in the lake is overall of first class; however, it is tending towards Class 2, with the lake in a state of transition from oligotrophy to mesotrophy and the most critical issues being nutrient concentrations in the lake and land based nutrient sources.

scholarly journals The Challenges of Regulating Diffuse Agricultural Pollution to Improve Water Quality

2017 ◽  
Vol 1 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Ronlyn Duncan
Keyword(s):  
Water Quality ◽  
Agricultural Land ◽  
National Policy ◽  
Predictive Modelling ◽  
Diffuse Pollution ◽  
Nutrient Concentrations ◽  
Policy Reforms ◽  
Lag Effects ◽  
Legal Provisions

Worldwide, the cumulative effects of diffuse pollution arising from a range of human activities are diminishing the quality and ecosystem capacity of lakes, rivers, estuaries, and oceans. Devising effective ways to regulate the causes and effects of diffuse pollution is a fraught legal, political, policy, and management challenge given the difficulties in identifying and measuring who is responsible for what, where, and when. In 2011, under its Resource Management Act, 1991, the South Pacific nation of New Zealand introduced national policy to arrest diffuse pollution with a requirement for local government to institute enforceable water quality and quantity limits on all freshwater bodies. The blueprint for these national freshwater policy reforms comes from its South Island region of Canterbury. Canterbury's regional council has adopted a catchment load approach whereby an overarching limit on nutrient losses from agricultural land is calculated and linked to land use rules to control property-scale agricultural activities. With a focus on the Canterbury region, this case study examines two approaches to establishing a catchment load for diffuse nutrient pollution to link to legal provisions in its regional plan. One is based on a river's nutrient concentrations and the other relies on predictive modelling. The case study opens important questions about measuring and regulating diffuse pollution and the difficulties faced by policy-makers and regulators in linking numbers to legally binding compliance and enforcement mechanisms, e.g. how to account for lag effects when establishing ‘in-stream’ limits and how to address changes in software when relying on ‘modelled’ limits?

scholarly journals Assessment of Lake Water Quality Using Factor Analysis: A Case Study of North Belgaum City, India

2017 ◽  
Vol 29 (1) ◽  
pp. 213-220
Author(s):  
Smita S. Muchandi ◽  
Rajkumar V. Raikar ◽  
Arjun S. Virupakshi ◽  
Pallavi Pharalad
Keyword(s):  
Water Quality ◽  
Factor Analysis ◽  
Lake Water ◽  
Lake Water Quality

Case study on water quality modelling of Dianchi Lake, Yunnan province, South West China

1999 ◽  
Vol 40 (2) ◽  
pp. 35-43 ◽  
Author(s):  
A.V. Gray ◽  
Wang Li
Keyword(s):  
Water Quality ◽  
Lake Water ◽  
Dianchi Lake ◽  
Water Quality Modelling ◽  
Quality Model ◽  
Lake Water Quality ◽  
West China ◽  
Run Off ◽  
Projected Changes

The main aim of this work was to construct and validate a mathematical water quality model of the Dianchi lake, so that by altering input total phosphate (TP) loads the projected changes in the lake water TP concentrations could be estimated. Historical information had indicated deteriorating lake water quality with increasing TP concentrations. The model was based on a simple annual mass balance, relying on 3 years (wet, average and dry) data with all TP loads quantified, 7 years of lake water quality, and 36 years of flow data. All lake processes were considered within a single variable, R. Planning TP removal at STWs and within fertilizer plants, coupled with interventions to reduce non-point TP loads from all land run-off by 50%, suggested future lake water TP concentrations could be stabilised at about 0.3 mg TP/l, i.e. the estimated limit for producing algal concentrations that would cause major problems in water treatment plants. The TP load reductions envisaged as realistic would only stabilise the lake water quality by about the year 2008; interventions, unfortunately, could not return the lake to its former pristine condition. The accuracy of the predictions was ± 0.1 mg TP/1, so collection of better data was needed.

Water quality management for the Talkatora Lake, Jaipur – a case study

1999 ◽  
Vol 40 (2) ◽  
pp. 29-33
Author(s):  
Akhilendra B. Gupta ◽  
Renu Jain ◽  
Kapil Gupta
Keyword(s):  
Water Quality ◽  
Research Study ◽  
Water Quality Management ◽  
Rapid Assessment ◽  
Mitigation Measures ◽  
Lake Water Quality ◽  
Sources Of Pollution ◽  
Lake Waters

This paper describes the field-based research study undertaken to quantify the pollution, identify the sources of pollution and draw up a plan of action to restore the water quality of the Talkatora Lake located in Jaipur City, capital of Rajasthan State. Laboratory analysis of water samples at different time periods and a mass balance of the lake waters showed that the first flush of stormwater from the adjoining residential and commercial areas was a major cause of pollution in the lake. An integrated waste management strategy to limit the pollution discharged to this lake to enable self-purification was recommended. The mitigation measures were partially implemented and the results of a rapid assessment of the subsequent lake water quality are also reported.

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