Be river basin

This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75.

12p dianmotminh02 03-05-2024 2 2   Download

Vietnam has been considered as one of the most vulnerable countries in the world under global warming. The Intergovernmental Panel on Climate Change (IPCC) estimated the increasing trend in the total annual rainfall in Vietnam in the mid-21st century, where 70% of the amount of rainfall will be delivered by the summer monsoon.

10p vinikolatesla 31-03-2022 11 2   Download

Clarias gariepinus and Oreochromis niloticus are two hot-water fish species of African origin that have been recently reported to occur unnaturally in hot-water resources and springs in the Sakarya River Basin (northwestern Turkey). Within effective planning strategies to maintain native biodiversity, monitoring fishes’ well-being can be useful to evaluate the status of nonnative fish populations and their degree of adaptation to new environments.

6p dolomite36 30-12-2021 6 0   Download

Stone moroko (Pseudorasbora parva) is considered to be one of the most invasive fishes, dispersing rapidly all over Europe and also in the freshwaters of the Baltic Sea basin. A recent survey carried out in the catchment of the lower part of the Odra River (Poland) in 2015 and 2016 revealed a large new population of stone moroko, which had colonized the creek Wardynka.

12p dolomite36 30-12-2021 10 0   Download

Gambusia holbrooki Girard, 1859 has established very strong populations in freshwater resources in Turkey after being introduced into Amik Lake (Hatay/Antakya) at the beginning of the 1920s. In this study, it was aimed to determine the female:male ratios and length-weight relationships of G. holbrooki populations in Turkey, which are considered as a threat, especially for endemic species. G. holbrooki specimen were sampled at total of 66 locations, including 39 lentic and 27 lotic locations, between 2016 and 2017. The female:male ratio was 1:0.39 for all of the investigated localities.

11p dolomite36 30-12-2021 7 0   Download

Fish communities are important indicators of the health of riverine ecosystems. Fish monitoring for The Living Murray (TLM) initiative, one of Australia’s most ambitious restoration undertakings for the degraded river-floodplain biota of the River Murray system (south-eastern Australia), was carried out annually from 2005 to 2011 across six ‘Icon Sites’, including the habitats and reaches therein. These spatial and temporal components of variation in fish community abundance and composition must be taken explicitly into account for consistent assessment of riverine ecosystem health.

16p dolomite36 30-12-2021 10 0   Download

The process of domestic wastewater treatment has created a large amount of greenhouse gases (GHG). However, the measure for evaluating domestic wastewater treatment is only the treatment efficiency. Meanwhile, the factors to assess the possibility of generating GHG emissions have not been concerned. The Nhue–Day River basin plays an important role on the socio–economic development; therefore, one of the problem needs to be filled with concern is the level of GHG emissions from waste sources, including domestic wastewater.

11p kequaidan10 03-03-2021 10 1   Download

The present study, it concluded that remote sensing techniques (ASTER–DEM) coupled with GIS can be a powerful tool in morphometric analysis of a region or basin and the data can be used for hydrological studies and water resource management. In the present study the liner and areal aspect parameters were calculated. The major parameters were Drainage density, stream order and Bifurcation ratio were play major role for hydrological processing and the values were, 0.58, 1-5 th order and 4 respectively.

7p gaocaolon9 22-12-2020 18 2   Download

Therefore, it is important to study the composition of Perciformes to have accurate assessment on their quality, composition and distribution, compared with past published findings to consider whether and how the polluted environment and non-scientific fishing methods may have caused impacts on the fish composition in which species are threatened and may be in the danger of extinction.

9p tamynhan8 04-11-2020 9 2   Download

This research has mainly investigated, surveyed and assessed the status of agricultural waste collection and treatment from agricultural production activities in 13 districts and cities, which have significant impact on water quality in Ma and Chu rivers. These research results could be used as practical basics to propose the measures for environmental protection of the basin.

9p cothumenhmong8 05-11-2020 12 1   Download

This paper presents the results of the flood frequency analysis of Meenachil river basin in Kerala using Gumbels extreme value distribution. The analysis used 34 years of data (1985-2018) to model the annual maximum discharge. The flood peak values of return period 2, 10, 50 and 100 year were computed and further extrapolation could be done to find out the flood discharge of any return period.

7p nguaconbaynhay7 15-08-2020 12 1   Download

Presently, in South Asian countries, majority of cucurbitaceous vegetables are extensively being grown in riverbeds (called diara land) for off season produce. Growing cucurbitaceous vegetables on river-beds or river basins constitute a distinct type of farming. River bed cultivation is a kind of vegetable forcing is being used in India facilitating off season production of cucurbitaceous vegetables, where cucurbits are grown in the river beds during winter season.

7p nguathienthan4 18-04-2020 12 1   Download

The accelerated erosion and the sediment outflow from agricultural lands is a serious global problem. Mankind will be facing great challenges in the next few decades. The present study was undertaken to estimate the suspended sediment concentration using Fuzzy Logic (FL), Multiple Linear Regression (MLR) and Sediment Rating Curve (SRC) models for the Vamsadhara river catchment comprising of 7820 km2 Area, situated between Mahanadi and Godavari river basins in south India.

18p kethamoi4 16-04-2020 6 1   Download

Water resource assessment involved various variables that can be simplified and tackled by developing a suitable mathematical model. Rainfall-Runoff (RR) modeling considered as a major hydrologic process and is essential for water resources management. This study presents the development of rainfall-runoff model based on artificial neural networks (ANNs) models in Shipra river basin of Madhya Pradesh. The ability of model was evaluated based on sum of squares error (SSE) and relative error.

9p caygaocaolon4 04-04-2020 25 1   Download

Groundwater is a treasured underground resource, which plays a central role in sustainable water management. However, it being hidden and dynamic in nature, its sustainable development and management calls for precise quantification of this precious resource at an appropriate scale. Chance of getting good groundwater at shallow depths for irrigation is always considered as a blessing for the farmers.

13p chauchaungayxua4 18-03-2020 19 2   Download

Cauvery river system is one of the major freshwater aquatic systems in Peninsular India with a number of tributaries and reservoirs on it. The system inhabits a variety of endemic fish species. Thippagondanahalli Reservoir (TR) is a medium reservoir on Arkavathy River, a tributary of River Cauvery. This report is on the first record of dwarf gourami, Trichogaster lalius belonging to the family, Osphronemidae, from the TR. The reservoir is located in Bengaluru South Taluk, Karnataka [13⁰ 02’41”N 77⁰ 36’24”E; Area at FRL (Full Reservoir level): 1162.0 ha].

8p caygaocaolon2 14-03-2020 21 0   Download

The present investigation intends to examinations the morphometric attributes of Ozat River basin to comprehend the hydrogeological behavior and influence on hydrology of the basin. The basic and derived morphometric parameters (linear, areal and relief aspects of drainage network) for the basin were determined using ASTER DEM (30 m resolution),remotely sensed images of Linear Imaging Self Scanner III (LISS III) and Geographic Information System (GIS).

21p caygaocaolon3 27-02-2020 29 2   Download

Bihar lies in the river plains of the basin of the river Ganga. It is endowed with the fertile alluvial soil with abundant water resources. This makes the Agriculture of Bihar rich and diverse. The state has about 3.2 million ha under rice cultivation, which is mostly rainfed covering both uplands and shallow lowland ecosystems. The area has decreased from 36.57 to 32.22 lakh ha during the last six years. Rice is cultivated in 37 districts of Bihar.

6p cothumenhmong3 22-02-2020 21 1   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

Morphometric analysis, which refers to the science of quantitative analysis of land surface, has been carried on Kamleshwar watershed of Hiran River in Gujarat using remote sensing and GIS techniques. Digital Elevation Model of 30 m × 30 m resolution was used to prepare the detailed drainage map in ArcGIS software and stream ordering was in which study area has trunk order of 5. Total seventeen morphometric parameters including linear, areal and relief aspects have been estimated. Mean bifurcation ratio of the watershed has been calculated to be 3.

9p quenchua2 15-12-2019 13 0   Download