Hydrological dams

This paper examines the effects of reduced water flow by upstream dams’ operation and river bed incision on saltwater intrusion in the Mekong Delta. In that regard, long-term water flow at two upstream hydrology stations from 1980 to 2020 and river bed incision from 2009 to 2017 were analyzed.

9p visherylsandber 04-07-2022 11 2   Download

Objects and range of research: Assessing the impacts of irrigation-hydropower construction system on some hydrologyhydraulic factors at downstream of Huong river from reservoirs to Thao Long dam with climate change calculated to the year of 2030.

27p dolphintaletale 23-04-2021 28 8   Download

This study demonstrated the prominent role of river meandering in erosion in An Giang province, but the erosion rates of river banks varied largely in time and space because this process is a composition of hydrological and sedimentation alterations due to upstream damming, sand mining, and a tropical cyclone. Hence, the results of this study would meaningfully verify and explain corresponding mechanisms/causes in other related study areas.

10p trinhthamhodang9 04-12-2020 12 2   Download

An evaluation was conducted to develop a stochastic time series model, capable of prediction of rainfall and runoff in Karso watershed. The Karso Watershed selected for hydrological studies is one of the sub watershed of the Damoder dam catchment of upper Damodar Valley, comprising a cover the area of 27.41 km2 . The hydrologic sequences data of watershed collected from Soil Conservation Deptt., Damodar Valley Corporation, Hazaribagh, Jharkhand State were analysed. The watershed be capable of be divided into three main landscapes.

7p kequaidan4 05-05-2020 13 0   Download

The aim of the present study is to assess the effect of hydropower dams on the streamflow in the Be river basin using the Soil and Water Assessment Tool (SWAT). Model calibration and validation of SWAT were conducted using the historical data collected from two stream gauges, namely Phuoc Long and Phuoc Hoa, and the obtained results indicated that SWAT shows a good reliability in reproducing streamflow with R2 >0.90 and NSE>0.70 for both periods of calibration (1980-1990) and validation (1991-1993).

5p chauchaungayxua2 07-01-2020 30 1   Download

The flow regime information from 1961 to 2016 was obtained from the Vietnam Meteorological and Hydrological Administration. The hydrological alteration was quantified by using IHA (Indicators of Hydrologic Alteration). The Kruskal – Wallis test was applied to examine the changes of hydrological regime between pre- and post- dam period. The results showed that 4 groups of IHA had significant change and one group had no significant difference in preand post-dam period.

10p queencongchua2 29-08-2019 5 0   Download

The account measures the Total Ecosystem Accessible Fresh Water (TEAW) and the Net Ecosystem Accessible Fresh Water Surplus (NEAWS) adjusted for water stress during the vegetation growing season. Accounts in m3 are established for water stocks in terrestrial ecosystems (soil and vegetation) and water bodies (aquifers, lakes and dams, rivers). They include a distinction between total and accessible stocks, the difference being due to physical or economic constraints of abstraction, pollution or time mismatch between availability and requirements for natural or human uses.

51p bin_pham 06-02-2013 59 4   Download

Tiếp tục sông Hồng. b Bao gồm sự chuyển từ sông Mississippi qua sông hoặc kênh dẫn dòng sông Old Old. c Rất ít nhánh dòng chảy hạ lưu. Hạ lưu nhà ga nằm ở Yuma, AZ, thoát nước diện tích 242.900 dặm vuông. Phần lớn dòng chảy tự nhiên chuyển hướng cho thủy lợi và sử dụng khác trong lưu vực trên Yuma. Lưu lượng trung bình tại Yuma, 1963-1970, là ít hơn 1.000 ft3secK1. d Đối với giai đoạn 1934-1960. e Interbasin dẫn dòng đầu tháng sáu năm 1966 giữa Hồ Barkley trên sông Cumberland và Hồ Kentucky trên sông Tennessee thông qua Barkley-Kentucky Canal. f...

0p hoakimthienduong 21-12-2011 69 4   Download