scholarly journals Toward hyper-resolution global hydrological models including human activities: application to Kyushu Island, Japan

2021 ◽  
Author(s):  
Naota Hanasaki ◽  
Hikari Matsuda ◽  
Masashi Fujiwara ◽  
Yukiko Hirabayashi ◽  
Shinta Seto ◽  
...  
Keyword(s):  
Water Resource ◽  
Human Activities ◽  
Water Resource Management ◽  
Resource Assessment ◽  
Historical Record ◽  
Water Withdrawal ◽  
Hydrological Models ◽  
Water Balance Components ◽  
Kyushu Island ◽  
Dam Operation

Abstract. Global hydrological models that include human activities are powerful tools for assessing water availability and use at global and continental scales. Such models are typically applied at a spatial resolution of 30 arcminutes (approximately 50 km). In recent years, some 5-arcminute (9-km) applications have been reported, but with numerous technical challenges, including the validation of calculations for more than a million grid cells and the conversion of simulation results into meaningful information relevant to water resource management. Here, the H08 global water resources model was applied in two ways to Kyushu Island in Japan at resolution of 1 arcminute (2 km), and the detailed results were compared. One method involved feeding interpolated global meteorological and geographic data into the default global model (GLB; in accordance with previous high-resolution applications). For the other method, locally derived boundary conditions were input to the localized model (LOC; this method can be easily extended and applied to other regions, at least across Japan). The results showed that GLB cannot easily reproduce the historical record, especially for variables related to human activities (e.g., dam operation and water withdrawal). LOC is capable of estimating natural and human water balance components at daily time scales and providing reliable information for regional water resource assessment. The results highlight the importance of improving data preparation and modeling methods to represent water management and use in hyper-resolution global hydrology simulations.

scholarly journals Assessing the impact of climate variability and human activities on streamflow variation

2016 ◽  
Vol 20 (4) ◽  
pp. 1547-1560 ◽  
Author(s):  
Jianxia Chang ◽  
Hongxue Zhang ◽  
Yimin Wang ◽  
Yuelu Zhu
Keyword(s):  
Climate Variability ◽  
Water Conservation ◽  
Human Activities ◽  
Water Resource Management ◽  
Water Withdrawal ◽  
Shaanxi Province ◽  
Hydrological Models ◽  
Moisture Index ◽  
Model Parameter ◽  
The Impact

Abstract. Water resources in river systems have been changing under the impact of both climate variability and human activities. Assessing the respective impact on decadal streamflow variation is important for water resource management. By using an elasticity-based method and calibrated TOPMODEL and VIC hydrological models, we quantitatively isolated the relative contributions that human activities and climate variability made to decadal streamflow changes in the Jinghe basin, located in the northwest of China. This is an important watershed of the Shaanxi province that supplies drinking water for a population of over 6 million people. The results showed that the maximum value of the moisture index (E0∕P) was 1.91 and appeared in 1991–2000, and the decreased speed of streamflow was higher since 1990 compared with 1960–1990. The average annual streamflow from 1990 to 2010 was reduced by 26.96 % compared with the multiyear average value (from 1960 to 2010). The estimates of the impacts of climate variability and human activities on streamflow decreases from the hydrological models were similar to those from the elasticity-based method. The maximum contribution value of human activities was 99 % when averaged over the three methods, and appeared in 1981–1990 due to the effects of soil and water conservation measures and irrigation water withdrawal. Climate variability made the greatest contribution to streamflow reduction in 1991–2000, the values of which was 40.4 %. We emphasized various source of errors and uncertainties that may occur in the hydrological model (parameter and structural uncertainty) and elasticity-based method (model parameter) in climate change impact studies.

scholarly journals The Capacity of the Hydrological Modeling for Water Resource Assessment under the Changing Environment in Semi-Arid River Basins in China

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1328 ◽  
Author(s):  
Xiaoxiang Guan ◽  
Jianyun Zhang ◽  
Amgad Elmahdi ◽  
Xuemei Li ◽  
Jing Liu ◽  
...  
Keyword(s):  
Water Resource ◽  
Human Activities ◽  
Hydrological Modeling ◽  
Environmental Changes ◽  
Hydrological Cycle ◽  
Resource Assessment ◽  
Hydrological Models ◽  
Runoff Series ◽  
Water Resource Assessment ◽  
Semi Arid

Conducting water resource assessment and forecasting at a basin scale requires effective and accurate simulation of the hydrological process. However, intensive, complex human activities and environmental changes are constraining and challenging the hydrological modeling development and application by complicating the hydrological cycle within its local contexts. Six sub-catchments of the Yellow River basin, the second-largest river in China, situated in a semi-arid climate zone, have been selected for this study, considering hydrological processes under a natural period (before 1970) and under intensive human disturbance (2000–2013). The study aims to assess the capacity and performance of the hydrological models in simulating the discharge under a changing environment. Four well-documented and applied hydrological models, i.e., the Xin’anjiang (XAJ) model, GR4J model, SIMHYD model, and RCCC-WBM (Water Balance Model developed by Research Center for Climate Change) model, were selected for this assessment. The results show that (1) the annual areal temperature of all sub-catchments presented a significant rising trend, and annual precipitation exhibited insignificant decline trend; (2) as a result of climate change and intensive human activities, the annual runoff series showed a declining trend with abrupt changes mostly occurring in the 1980s with the exception of the Tangnaihai station; (3) the four hydrological models generally performed well for runoff simulation for all sub-catchments under the natural period. In terms of Nash–Sutcliffe efficiency coefficient, the XAJ model worked better in comparison to other hydrological models due to its detailed representations and complicated mechanism in runoff generation and flow-routing scheme; (4) environmental changes have impacted the performance of the four hydrological models under all sub-catchments, in particularly the Pianguan River catchment, which is could be attributed to the various human activities that in turn represent more complexity for the regional hydrological cycle to some extent, and reduce the ability to predict the runoff series; (5) the RCCC-WBM model, well known for its simple structure and principles, is considered to be acceptable for runoff simulation for both natural and human disturbance periods, and is recommended for water resource assessment under changing environments for semi-arid regions.

scholarly journals Assessing the impact of climate variability and human activities on streamflow variation

2015 ◽  
Vol 12 (12) ◽  
pp. 12747-12788
Author(s):  
J. Chang ◽  
H. Zhang ◽  
Y. Wang ◽  
Y. Zhu
Keyword(s):  
Climate Variability ◽  
Water Conservation ◽  
Human Activities ◽  
Water Resource Management ◽  
Water Withdrawal ◽  
Shaanxi Province ◽  
Hydrological Models ◽  
Moisture Index ◽  
Model Parameter ◽  
The Impact

Abstract. Water resources in river systems have been changing under the impact of both climate variability and human activities. Assessing the respective impact on decadal streamflow variation is important for water resource management. By using an elasticity-based method and calibrated TOPMODEL and VIC hydrological models, we quantitatively isolated the relative contributions that human activities and climate variability made to decadal streamflow changes in Jinghe basin, located in the northwest of China. This is an important watershed of Shaanxi Province that supplies drinking water for a population of over 6 million people. The results showed that the maximum value of the moisture index (E0/P) was 1.91 and appeared in 1991–2000 and that the decreased speed of streamflow was higher since 1990. The average annual streamflow from 1990 to 2010 was reduced by 26.96 % compared with the multi-year average value. The estimates of climate variability and the impact of human activities on streamflow decreases from the hydrological models were similar to those from the elasticity-based method. The maximum contribution value of human activities was appeared in 1981–1990 due to the effects of soil and water conservation measures and irrigation water withdrawal. Climate variability made the greatest contribution to reduction in 1991–2000, the values of which were 99 and 40.4 % when averaged over the three methods. We emphasized various source of errors and uncertainties that may occur in the hydrological model (parameter and structural uncertainty) and elasticity-based method (model parameter) in climate change impact studies.

scholarly journals Isotopes in Hydrology and Hydrogeology

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 291 ◽  
Author(s):  
Maurizio Barbieri
Keyword(s):  
Resource Management ◽  
Water Resource ◽  
Water Resource Management ◽  
Analytical Techniques ◽  
Resource Assessment ◽  
Full Spectrum ◽  
Assessment Development ◽  
Development And Management ◽  
Water Resource Assessment ◽  
Critical Aspects

The structure, status, and processes of the groundwater system, which can only be acquired through scientific research efforts, are critical aspects of water resource management. Isotope hydrology and hydrogeology is a genuinely interdisciplinary science. It developed from the application of methods evolved in physics (analytical techniques) to problems of Earth and the environmental sciences since around the 1950s. In this regard, starting from hydrogeochemical data, stable and radioactive isotope data provide essential tools in support of water resource management. The inventory of stable isotopes, which has significant implications for water resources management, has grown in recent years. Methodologies based on the use of isotopes in a full spectrum of hydrological problems encountered in water resource assessment, development, and management activities are already scientifically established and are an integral part of many water resource investigations and environmental studies. The driving force behind this Special Issue was the need to point the hydrological and water resource management societies in the direction of up-to-date research and best practices.

scholarly journals Watershed Modelling of the Mindanao River Basin in the Philippines Using the SWAT for Water Resource Management

2020 ◽  
Vol 6 (4) ◽  
pp. 626-648 ◽  
Author(s):  
Ismail Adal Guiamel ◽  
Han Soo Lee
Keyword(s):  
Resource Management ◽  
Data Quality ◽  
River Basin ◽  
Water Resource ◽  
River Discharge ◽  
Water Resource Management ◽  
The Philippines ◽  
Water Withdrawal ◽  
Precipitation Data ◽  
Average Growth

This study aims to simulate the watershed of the Mindanao River Basin (MRB) to enhance water resource management for potential hydropower applications to meet the power demand in Mindanao with an average growth of 3.8% annually. The soil and water assessment tool (SWAT) model was used with inputs for geospatial datasets and weather records at four meteorological stations from DOST-PAGASA. To overcome the lack of precipitation data in the MRB, the precipitation records were investigated by comparing the records with the global gridded precipitation datasets from the NCDC-CPC and the GPCC. Then, the SWAT simulated discharges with the three precipitation data were calibrated with river discharge records at three stations in the Nituan, Libungan and Pulangi rivers. Due to limited records for the river discharges, the model results were, then, validated using the proxy basin principle along the same rivers in the Nituan, Libungan, and Pulangi areas. The R2 values from the validation are 0.61, 0.50 and 0.33, respectively, with the DOST-PAGASA precipitation; 0.64, 0.46 and 0.40, respectively, with the NCDC-CPC precipitation; and 0.57, 0.48 and 0.21, respectively, with the GPCC precipitation. The relatively low model performances in Libungan and Pulangi rivers are mainly due to the lack of datasets on the dam and water withdrawal in the MRB. Therefore, this study also addresses the issue of data quality for precipitation and data scarcity for river discharge, dam, and water withdrawal for water resource management in the MRB and show how to overcome the data quality and scarcity.

scholarly journals Hydrological calibration and validation of the MGB-IPH model for water resource management in the upper Teles Pires River basin in the Amazon-Cerrado ecotone in Brazil

2019 ◽  
Vol 49 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Riene Filgueiras de OLIVEIRA ◽  
Cornélio Alberto ZOLIN ◽  
Daniel de Castro VICTORIA ◽  
Tarcio Rocha LOPES ◽  
Laurimar Gonçalves VENDRUSCULO ◽  
...  
Keyword(s):  
Resource Management ◽  
River Basin ◽  
Water Resource ◽  
Water Resource Management ◽  
Large Scale ◽  
Model Performance ◽  
Resource Assessment ◽  
Distributed Hydrological Model ◽  
Statistical Parameters ◽  
Mato Grosso

ABSTRACT The upper Teles Pires River basin is located in the Brazilian agriculture frontier in the north of Mato Grosso state and has experienced significant changes in land use and cover, which can cause major changes in its hydrological dynamics. Climatic and hydrologic data are scarce in the region, which poses uncertainties in the decision-making process aiming at the sustainable management of water resources in this strategic area. The aim of this study was to evaluate the performance of the Large-Scale Distributed Hydrological Model (MGB-IPH) to assess water availability of the upper Teles Pires basin and support water resource management in the Amazon-Cerrado ecotone. The MGB-IPH model was calibrated and validated using data from three streamflow stations available in the basin. In order to verify the model performance, the Nash-Sutcliffe (NS) and the PBIAS statistical parameters were applied. Our results show that, by using the MGB-IPH model with generally available data, the maximum and minimum flow regimes can be successfully assessed in the upper Teles Pires basin. The continuity curves of daily flow simulated by the model showed a good fit with the observed flow. Overall, the results demonstrated the applicability of the MGB-IPH model for water resource assessment and management in the basin.

The introduction of water resources management programs in Western Asia

Water Policy ◽  
2003 ◽  
Vol 5 (3) ◽  
pp. 257-268 ◽  
Author(s):  
Mey Jurdi ◽  
Mohamed J. Abdulrazzak ◽  
Shiraz Basma
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Water Resources Management ◽  
Water Resource Management ◽  
Demand Management ◽  
Integrated Water Resources Management ◽  
Resource Assessment ◽  
Management Program ◽  
Resources Management ◽  
Western Asia

This paper emphasizes the importance of developing and implementing integrated water resource management programs in the Western Asia region. As such, the status of water resources management programs is assessed in reference to the integrative components of water policies and strategies, water legislation and enforcement, water institution framework, and water resource assessment and capacity building. Besides, recommendations relative to the hereby indicated integrative components are proposed where applicable. Development and implementation of an integrated water resources management program is essential for the region to overcome existing programs that are mainly oriented towards demand management and exploitation of groundwater reserves. Such programs would be directed to satisfy national freshwater needs for development and to promote water as an integrated component of social and economic goals as well as ecosystem management.

scholarly journals Water Resource Management through Understanding of the Water Balance Components: A Case Study of a Sub-Alpine Shallow Lake

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3124
Author(s):  
Marzia Ciampittiello ◽  
Claudia Dresti ◽  
Helmi Saidi
Keyword(s):  
Resource Management ◽  
Surface Water ◽  
Water Balance ◽  
Water Resource ◽  
Water Resource Management ◽  
Water Inflow ◽  
Water Balance Components ◽  
Hydrological Balance ◽  
Volume Variation ◽  
Groundwater Source

Water availability is a crucial factor for the hydrological balance of sub-alpine shallow lakes and for their ecosystems. This is the first study on water balance and water management of Lake Candia, a small sub-alpine, shallow morainic lake. The aims of this paper are to better understand the link between surface water and groundwater. The analyses carried out included: (i) evaluation of water balance, (ii) identification of trends for each component of water balance, (iii) detection of the presence of a break point or change in the behavior of each component, and (iv) regression analyses of the terms of hydrological balance and their relative importance. The analyses revealed a high variability mainly regarding the groundwater component, and very good correlation between rainfall and volume variation, between rainfall and the water inflow, and between groundwater source and outflow. Volume variation is linked with rainfall, outflow, groundwater source, and surface water inflow. Despite the fact that the groundwater component does not seem to have a great importance relative to direct rainfall on the lake, it is necessary to study the component with careful resource management policies that point toward the protection of the water resource, sustainable uses, and protection of the Lake Candia ecosystem.

Variations in Baseflow Recession Curves as a Function of Land-Use Change in the Keduang Watershed, Wonogiri Regency, Jawa Tengah Province, Indonesia

2020 ◽  
Vol 3 (2) ◽  
pp. 54-67
Author(s):  
Bokiraiya Latuamury ◽  
Moda Talaohu
Keyword(s):  
Land Use ◽  
Resource Management ◽  
Land Use Change ◽  
Water Resource ◽  
Human Activities ◽  
Water Resource Management ◽  
Agricultural Fields ◽  
Forest Land ◽  
Recession Curves ◽  
Agricultural Areas

Land-use change and its effects on hydrological processes in a watershed strongly determine the adopted land and water resource management. Human activities that lead to the conversion of forest to non-forest land can continue to modify hydrological systems. This study was intended to analyze the variation in baseflow recession curves as a function of land-use change in the Keduang Watershed, Wonogiri Regency, Jawa Tengah Province. The results showed that the types of land-use conversions had the same model of recession: Qmodel= 0.9747*Exp(-0.2357*ts) for preserved forests, Qmodel= 0.1266*Exp(-0.1238*ts), to represent the conversion of forests to agricultural areas, Qmodel= 0.1108*Exp(-0.1008*ts) for forests to settlements, Qmodel= 0.7628*Exp(-0.2015*ts) for unchanged agricultural areas, Qmodel= 0.0465*Exp(-0.1141*ts) for the conversion of agricultural areas back to forests, Qmodel= 0.1072*Exp(-0.0952*ts) for agricultural areas to settlements, and Qmodel= 0.3359*Exp(-0.1542*ts) for settlements. Overall, the equations indicate that forests can store water better and longer than converted to agricultural fields and settlements.

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