Management of Hydrological Systems

Muñoz, Holger Manuel Benavides; Zari, Jorge Eugenio Arias; Fries, Andreas Erwin; Sánchez-Paladines, José; Reina, Antonio Gallegos; Hernández-Ocampo, Raquel Verónica; Ochoa-Cueva, Pablo

doi:10.1201/9781003024576

Cited by 3 publications

(4 citation statements)

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“…O c is the opportunity cost (USD/ha). The α coefficient is the value of the water regulation ecosystem service (between 0 and 1), estimated using the contingent valuation method [55], because this is one of the most used methods for the economic valuation of environmental goods and services [56,57]. The contingent valuation method, with the support of a survey, was applied to a random sample of residential water users in the study area, with a confidence level of 95%.…”

Section: Economic Valuation For Iwmmentioning

confidence: 99%

“…The gap between the full cost of the drinking water service and water supply companies' budgets is an issue that compromises aspects such as the quality and coverage of the water service [45]. This fact is evident for the public water supply company in the city of Loja [55]. Despite the water supply basins being located in an area considered to be of high water production [30], the area has serious deforestation problems [68], there is high demand for urbanization and agricultural production [38,69], and there is a water deficit [22].…”

Section: Financial and Operational Challenges To Water Supply Sustain...mentioning

confidence: 99%

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Sustainable Water Service Tariff Model for Integrated Watershed Management: A Case Study in the Ecuadorian Andes

Granda-Aguilar,

Benavides-Muñoz,

Arteaga-Marín

et al. 2024

Water

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This study addresses the financial sustainability challenge of integrated watershed management (IWM) in regions with inadequate water service tariffs. A novel water service tariff model is proposed, incorporating supply costs, water loss reduction investments, and IWM expenses informed by user perceptions. The model is applied to an intermediate Andean city in southern Ecuador, where the current tariff impedes the financial viability of the water utility, reflecting a regional trend. The results indicate a necessary tariff increase exceeding 100% to cover the costs and support IWM. The economic value of watershed environmental services (WES) were estimated at USD 1,505,530.64 per year. This value translates to an average water consumption of 20 m3/user/month, equivalent to a WES of USD 2.60 per month. Despite the users’ willingness to pay falling below the estimated economic value of WES, there is a clear need for implementing incentive programs to promote water conservation and policy adjustments that favor the financial sustainability of water supply companies in developing countries.

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Section: Economic Valuation For Iwmmentioning

confidence: 99%

Section: Financial and Operational Challenges To Water Supply Sustain...mentioning

confidence: 99%

Sustainable Water Service Tariff Model for Integrated Watershed Management: A Case Study in the Ecuadorian Andes

Granda-Aguilar,

Benavides-Muñoz,

Arteaga-Marín

et al. 2024

Water

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“…The basin has been intervened with in terms of conservation, with highly restrictive regulations related to human activities. The local government has also bought lands closed to catchments to protect water supply, however, wealthy owners still retain some properties focused on areas in the upper part of the basin [80]; therefore, the conditions of change of use and land cover are atypical and deserve to be studied, in addition to their effect on the different natural physical processes associated with water. The meteorological forecast was developed in order to contextualize the increase in temperature and extreme rainfall and to raise the need for adaptation measures to climate change.…”

Section: Actual Context Of the Zh Basin And The Need For Iwrmmentioning

confidence: 99%

Establishment of the Baseline for the IWRM in the Ecuadorian Andean Basins: Land Use Change, Water Recharge, Meteorological Forecast and Hydrological Modeling

Mera-Parra

Oñate-Valdivieso

Massa-Sánchez

et al. 2021

Land

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This study was conducted in the Zamora Huayco (ZH) river basin, located in the inter-Andean region of southern Ecuador. The objective was to describe, through land use/land cover change (LUCC), the natural physical processes under current conditions and to project them to 2029. Moreover, temperature and precipitation forecasts were estimated to detail possible effects of climate change. Using remote sensing techniques, satellite images were processed to prepare a projection to 2029. Water recharge was estimated considering the effects of slope, groundcover, and soil texture. Flash floods were estimated using lumped models, concatenating the information to HEC RAS. Water availability was estimated with a semi-distributed hydrological model (SWAT). Precipitation and temperature data were forecasted using autoregressive and exponential smoothing models. Under the forecast, forest and shrub covers show a growth of 6.6%, water recharge projects an increase of 7.16%. Flood flows suffer a reduction of up to 16.54%, and the flow regime with a 90% of probability of exceedance is 1.85% (7.72 l/s) higher for 2029 than for the 2019 scenario, so an improvement in flow regulation is evident. Forecasts show an increase in average temperature of 0.11 °C and 15.63% in extreme rainfall by 2029. Therefore, intervention strategies in Andean basins should be supported by prospective studies that use these key variables of the system for an integrated management of water resources.

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“…This has caused problems associated with competition for its use and has affected the supply ecosystems [1,7]. Until the end of the last century, water management in the world focused mainly on meeting demand [8,9]. Also, the availability of water was apparently sufficient, and it was not necessary to analyze in depth all of the aspects related to its management.…”

Section: Introductionmentioning

confidence: 99%

Territorial Prospective to Sustainability: Strategies for Future Successful of Water Resource Management on Andean Basins

Mera-Parra

Massa-Sánchez

Oñate-Valdivieso

et al. 2022

Land

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In Latin America, water resource management in some areas is difficult when all parts of a system are not considered (including its dynamism). Therefore, it becomes necessary to prepare instruments that facilitate management using a comprehensive approach. This study aimed to develop a methodology that allows one to conduct a prospective analysis of water management over delimited territories. The Zamora Huayco basin was chosen as the study area. This work included a survey of physical-natural, socioeconomic, and political-institutional variables, as well as a system structural analysis. Also, the generation of future scenarios and the strategic and tactical orientation for the integrated management of water resources. The results show that, of the 23 variables used, 19 were classified as key system variables. Most of the variables had strong impacts on each other, but at the same time these were highly receptive to changes. The behavior of change, proposed for the different uses and land cover in the basin for 2029, was considered as the objective scenario, highlighting the gain in forest areas and shrub vegetation. The strategic plans proposed in this methodology consider the structuring and collecting information in a single repository, creating communication channels between stakeholders and decision-makers.

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Management of Hydrological Systems

Cited by 3 publications

References 0 publications

Sustainable Water Service Tariff Model for Integrated Watershed Management: A Case Study in the Ecuadorian Andes

Sustainable Water Service Tariff Model for Integrated Watershed Management: A Case Study in the Ecuadorian Andes

Establishment of the Baseline for the IWRM in the Ecuadorian Andean Basins: Land Use Change, Water Recharge, Meteorological Forecast and Hydrological Modeling

Territorial Prospective to Sustainability: Strategies for Future Successful of Water Resource Management on Andean Basins

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