Hydrological modeling for the Piracicaba River basin to support water management and ecosystem services

A computer program based on expert system software was developed and proposed as a prototype model for water management to control eutrophication problems in receiving water bodies (Suzuki etal., 1988). The system has several expert functions: 1. data input and estimation of pollution load generated and discharged in the river watershed; 2. estimation of pollution load run-off entering rivers; 3. estimation of water quality of receiving water bodies, such as lakes; and 4. assisting man-machine dialog operation. The program can be used with MS-DOS BASIC and assembler in a 16 bit personal computer. Five spread sheets are utilized in calculation and summation of the pollutant load, using multi-windows. Partial differential equations for an ecological model for simulation of self-purification in shallow rivers and simulation of seasonal variations of water quality in a lake were converted to computer programs and included in the expert system. The simulated results of water quality are shown on the monitor graphically. In this study, the expert system thus developed was used to estimate the present state of one typical polluted river basin. The river was the Katsura, which flows into Lake Sagami, a lake dammed for water supply. Data which had been actually measured were compared with the simulated water quality data, and good agreement was found. This type of expert system is expected to be useful for water management of a closed water body.

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Integrated waste water management for a small river basin - a case study

Water Science & Technology ◽

10.2166/wst.1998.0442 ◽

1998 ◽

Vol 38 (11) ◽

pp. 87-95

Author(s):

R. Fenz ◽

M. Zessner ◽

N. Kreuzinger ◽

H. Kroiss

Keyword(s):

Waste Water ◽

Water Management ◽

River Basin ◽

Rural Areas ◽

Urban Areas ◽

Waste Water Treatment ◽

Point Of View ◽

Political Issue ◽

The North ◽

Waste Water Management

In Austria approximately 70% of the population is connected to sewerage and to biological waste water treatment plants. Whereas the urban areas are already provided with these facilities to a very high extent, effort is still needed in rural areas to meet the requirements of the Austrian legislation. The way, this task should be solved has provoked much controversy. It is mainly the question, whether centralised or decentralised sewage disposal systems are preferable from the ecological and economical point of view, that became a political issue during the last 5 years. The Institute for Water Quality and Waste Management was asked to elaborate a waste water management concept for the Lainsitz River Basin, a mainly rural area in the north of Austria discharging to the Elbe river. Both ecological and economical aspects should be considered. This paper presents the methodology that was applied and the criteria which were decisive for the selection of the final solution.

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Arsenic in terrestrial invertebrates from riparian areas of the Piracicaba River Basin, São Paulo State, Brazil

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/s10967-017-5606-2 ◽

2017 ◽

Vol 314 (3) ◽

pp. 1675-1681

Author(s):

Elvis J. França ◽

Elisabete A. De Nadai Fernandes ◽

Felipe Y. Fonseca ◽

Marcelo R. L. Magalhães ◽

Mariana L. O. Santos

Keyword(s):

River Basin ◽

Sao Paulo ◽

São Paulo ◽

Riparian Areas ◽

Terrestrial Invertebrates ◽

Paulo State ◽

São Paulo State ◽

Piracicaba River

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Emergy Analysis and Ecological Spillover as Tools to Quantify Ecological Compensation in Xuchang City, Qingyi River Basin, China

Water ◽

10.3390/w13040414 ◽

2021 ◽

Vol 13 (4) ◽

pp. 414

Author(s):

Huiqin Li ◽

Cuimei Lv ◽

Minhua Ling ◽

Changkuan Gu ◽

Yang Li ◽

...

Keyword(s):

Ecosystem Services ◽

River Basin ◽

Water Footprint ◽

Effective Means ◽

Cost Benefit ◽

Emergy Analysis ◽

Ecological Compensation ◽

Freshwater Resources ◽

Ecological Protection ◽

Complex Relationships

As an effective means to coordinate cost–benefit allocation of ecological protection between upstream and downstream cities, ecological compensation is often used to improve collaborative basin-wide freshwater resources management. Yet, due to the complex relationships between upstream and downstream ecosystem services, calculating eco-compensation is not an easy task. We used ecological spillover (the amount of local ecosystem services not used in the region and thus flows to downstream areas) and emergy analysis to determine the amount of eco-compensation that the city of Xuchang should pay to the upstream city of Xinzheng (Qingyi River Basin, China) from 2010 to 2014. Eco-compensation was determined by deducting the emergy of the local, self-supplied ecosystem services of Xuchang City, calculated using an ecological-water-footprint-based analysis, from the emergy of the total ecosystem services used in Xuchang, and monetized accordingly. The results showed that the self-supplied ecosystem services decreased from 2010 to 2014 and, thus, Xuchang relied more on the ecological spillover services flowing from Xinzheng. As a result, eco-compensation increased from 990 million Chinese Yuan (¥) in 2010 to ¥509 billion in 2014, mostly due to increased demands for water purification and reduced precipitation around Xuchang. This method can be further enhanced by introducing larger datasets and can be replicated elsewhere to accurately determine ecological compensation, ensuring basin-wide collaboration towards the sustainable management of freshwater resources.

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