scholarly journals The Yampa River basin, Colorado and Wyoming : a preview to expanded coal-resource development and its impacts on regional water resources

1979 ◽  
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Resource Development ◽  
Coal Resource ◽  
Yampa River ◽  
Regional Water

Runoff Forecast and Analysis of the Probability of Dry and Wet Transition in the Hanjiang River Basin

2021 ◽  
Author(s):  
Haoyu Jin ◽  
Xiaohong Chen ◽  
Ruida Zhong
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Transition Probability ◽  
Conversion Model ◽  
Drought And Flood ◽  
Runoff Prediction ◽  
Runoff Forecast ◽  
Hanjiang River ◽  
Basin Area ◽  
Regional Water

Abstract Runoff prediction has an important guiding role in the planning and management of regional water resources, flood prevention and drought resistance, and can effectively predict the risk of changes in regional water resources. This study used 12 runoff prediction methods to predict the runoff of four hydrological stations in the Hanjiang River Basin (HRB). Through the MCMC method, the HRB runoff probability conversion model from low to high (high to low) is constructed. The study found that the runoff of the HRB had a decreasing trend. In the mid-1980s, the runoff had a significant decreasing trend. The smoother the runoff changes, the easier it is to make accurate prediction. On the whole, the QS-MFM, MFM, MA-MFM, CES and DNN methods have strong generalization ability and can more accurately predict the runoff of the HRB. The Logistic model can accurately simulate the change of runoff status in the HRB. Among them, the HLT station has the fastest conversion rate of drought and flood, and the flow that generates floods is 6 times that of drought. The smaller the basin area, the larger the gap between drought and flood discharge. Overall, this research provides important technical support for the prediction of change in water resources and the transition probability from drought to flood in the HRB.

scholarly journals Quantitative Analysis of the Sustainable Development Capacity of Regional Water Resources：A case study of Sichuan Province

2020 ◽  
Vol 143 ◽  
pp. 02005
Author(s):  
Xuedong Liang ◽  
Li Yang ◽  
Meng Ye ◽  
Guoying Deng
Keyword(s):  
Sustainable Development ◽  
Water Resources ◽  
Water Resource ◽  
Principal Component ◽  
Resource Development ◽  
Measurement Model ◽  
Water Resource Development ◽  
System A ◽  
Sustainable Water Resource ◽  
Regional Water

Limited water resources have become a serious problem in recent decades. Based on previous research results, this article develops an index system to evaluate sustainable water resource development that includes a water resource condition system, a water resource development and utilization system, a water resource protection and management system, and a socio-economic system. A measurement model is then constructed based on a principal component analysis (PCA) -entropy weights-weighted average method to optimize the evaluation index system for dimensionality reduction, to assign weights to the principal component factors, and allow for a comprehensive evaluation of water resource sustainability. The measurement model is applied to an empirical analysis of sustainable water resource development in Sichuan Province from 2008 to 2017, from which it is found that coordinated sustainable regional water resource and social economic development can be achieved through rational exploitation, efficient utilization, and environmental water pollution control. This research could provide a reference for regional sustainable development of water resources and policy developments.

scholarly journals Modelling the Impact of Vegetation Change on Hydrological Processes in Bayin River Basin, Northwest China

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2787
Author(s):  
Xin Jin ◽  
Yanxiang Jin ◽  
Xufeng Mao ◽  
Jingya Zhai ◽  
Di Fu
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Vegetation Change ◽  
Northwest China ◽  
Hydrological Processes ◽  
Area Index ◽  
Groundwater Exchange ◽  
Low Coverage ◽  
The Impact ◽  
Regional Water

Vegetation change in arid areas may lead to the redistribution of regional water resources, which can intensify the competition between ecosystems and humans for water resources. This study aimed to accurately model the impact of vegetation change on hydrological processes in an arid endorheic river watershed undergoing revegetation, namely, the middle and lower reaches of the Bayin River basin, China. A LU-SWAT-MODFLOW model was developed by integrating dynamic hydrological response units with a coupled SWAT-MODFLOW model, which can reflect actual land cover changes in the basin. The LU-SWAT-MODFLOW model outperformed the original SWAT-MODFLOW model in simulating the impact of human activity as well as the leaf area index, evapotranspiration, and groundwater table depth. After regional revegetation, evapotranspiration and groundwater recharge in different sub-basins increased significantly. In addition, the direction and amount of surface-water–groundwater exchange changed considerably in areas where revegetation involved converting low-coverage grassland and bare land to forestland.

scholarly journals Assessing the hydrological impacts of coal resource development: a case study from Australia

2021 ◽  
Vol 66 (1) ◽  
Author(s):  
David A. Post ◽  
Keyword(s):  
Water Resources ◽  
Regional Scale ◽  
Resource Development ◽  
Stream Network ◽  
Stream Length ◽  
Near Surface ◽  
Hydrological Change ◽  
Planning Decisions ◽  
Groundwater Drawdown ◽  
Coal Resource

The objective of this study is to predict regional-scale cumulative impacts on water resources caused by coal resource developments in the Gloucester subregion of New South Wales (NSW), Australia. A key outcome of the assessment is identifying areas where water resources are very unlikely to be impacted (with a less than 5% chance) from those where water resources are potentially impacted (at least a 5% chance). Governments, industry and the community can then focus on areas that are potentially impacted when making regulatory, water management and planning decisions. Potential impacts were ruled out using a zone of potential hydrological change. This zone was defined based on at least a 5% chance of exceeding defined thresholds in multiple hydrological response variables including groundwater drawdown and eight streamflow metrics (only reductions in annual streamflow are reported here). The zone of potential hydrological change in the Gloucester subregion covers 250 km2 and includes 242 km of stream network. This represents 52% of the area and 70% of the stream length assessed. Groundwater drawdown exceeding 0.2 m in the near surface aquifer due to additional coal resource development is very likely (>95% chance) for an area of 20 km2 but is very unlikely (<5% chance) to exceed an area of 100 km2. Although 242 km of streams are identified as being potentially impacted, changes in streamflow are small, with a little over 5% reduction in annual flow in some streams close to the coal mines, and reductions in annual flow in the major rivers not exceeding 1 - 5%.

Sign in / Sign up

Export Citation Format

Share Document