Selection and validation of reference sites in small river basins

Hydrobiologia ◽  
2006 ◽  
Vol 573 (1) ◽  
pp. 133-154 ◽  
Author(s):  
M. L. Chaves ◽  
J. L. Costa ◽  
P. Chainho ◽  
M. J. Costa ◽  
N. Prat
Keyword(s):  
River Basins ◽  
Small River ◽  
Reference Sites

Quantitative and Qualitative Characteristics of Urban Discharge to Small River Basins in the South West of Sweden

1983 ◽  
Vol 14 (3) ◽  
pp. 155-166 ◽  
Author(s):  
Wm. Hogland ◽  
R. Berndtsson
Keyword(s):  
River Basins ◽  
Small River ◽  
The South ◽  
Time Intervals ◽  
Qualitative And Quantitative ◽  
South West ◽  
Quantitative Characteristics ◽  
Qualitative Characteristics ◽  
Qualitative And Quantitative Characteristics

The paper deals with the qualitative and quantitative characteristics of urban discharge. Ratios for urban discharge and recipient flow during different time intervals are presented and discussed. The quality of the urban discharge is illustrated through pollutographs.

Nitrogen balance in small river basins under agricultural and forestry use

1980 ◽  
Vol 14 (1) ◽  
pp. 23-27 ◽  
Author(s):  
V. N. Kudeyarov ◽  
V. N. Bashkin
Keyword(s):  
Nitrogen Balance ◽  
River Basins ◽  
Small River

scholarly journals ASSESSMENT OF FLASH-FLOOD SUSCEPTIBILITY IN SMALL RIVER BASINS

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Andreea Dragomir ◽  
Andreea-Violeta Tudorache ◽  
Romulus Costache
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Flash Flood ◽  
River Basins ◽  
Flood Risk Management ◽  
Small River ◽  
Management Activity ◽  
Flood Susceptibility ◽  
River Valleys ◽  
Very High

Due to the climate changes occurred in the last decades the frequency and intensity of hydrological risk phenomena are also increasing. The flash-floods are considered the most devastating natural hazards around worldwide. The identification of areas with a high flash-flood potential and also of the valleys with a high potential for flash-flood propagation is mandatory to be included in the flash-flood risk management activity. In this regard the present study proposes a GIS methodology to identify the flash-flood potential along river valleys from small catchments. The analysis carried out into a number of 5 small river basins across Romania revealed that a high percentage of river network is characterized by a high and very high flash-flood potential. The results of the present study can be successfully used in the flash-flood risk management activity and also in the activity of flash-flood forecast and warning.

scholarly journals Basin-centric approach to the sustainable development of agriculture in the context of climate change

2021 ◽  
pp. 5-13
Author(s):  
S.E. Dehodiuk ◽  
Е.G. Degodiyk ◽  
Yu.P. Borko
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Terrestrial Ecosystems ◽  
River Basins ◽  
Ecological Condition ◽  
Scientific Data ◽  
Small River ◽  
Nature Management ◽  
Small Rivers ◽  
Nature Restoration

The aim is to develop conceptual principles of sustainable development of the agrosphere and reproduction of degraded riverbeds of small rivers under climate change. Methods. Methodology and methods of system approach, monitoring, statistical analysis, and synthesis of scientific data. Results. It has been determined the ecological condition in Ukraine and the world has been by the manifestations of degradation processes in terrestrial ecosystems and small river basins on the principle of causation. It has been suggested the conceptual bases of restoration of channels of small rivers and their basins by carrying out engineering, culture-technical works in channels and floodplains of small rivers, the organization of adaptive landscaping of the territory, and also carrying out agro-, chemo-, bio- and phyto-meliorations in their basins without disturbance the basis of erosion and giving impetus to self-renewal of natural fauna and flora. In the processes of nature restoration, the leading role of domestic science in the methodological and methodological support of projects has been identified, and importance is attached to the restoration of natural biodiversity and biologization in agricultural systems. We proposed to create a state mortgage land bank with a concentration in it of land fees of ecological funds with the involvement of domestic and foreign investment. It is recommended to test the idea in several model pools of soil-climatic zones with further replication in Ukraine and the spread of technology beyond its borders. Conclusions. А systematic approach is needed to carry out reclamation works in the basins of small rivers is to implement the basin approach. To implement the program, the Verkhovna Rada of Ukraine must adopt the Law of Ukraine “On Agriculture, Sustainable Development of the Biosphere and Ecological Nature Management”, the project of which was developed at the NSC “Institute of Agriculture of NAAS”. The NSC “Institute of Agriculture of NAAS” with appropriate financial and personnel support on a multifunctional basis can perform the functions of a methodological center for the development of methodology and techniques of land management and reclamation in the process of restoring small river basins.

The Pollutant Load Factor of Household Wastewater in Japan

1986 ◽  
Vol 18 (7-8) ◽  
pp. 157-167 ◽  
Author(s):  
Masao Ukita ◽  
Hiroshi Nakanishi ◽  
Masahiko Sekine
Keyword(s):  
Mass Balance ◽  
River Basins ◽  
Small River ◽  
Water Bodies ◽  
Load Factor ◽  
Pollutant Load ◽  
Fine Weather ◽  
Household Wastewater ◽  
Load Generation

The objective of this study was to clarify quantitatively the role of household wastewater as one of the causes of the rapid pollution of nearby water-bodies and to consider the importance of countermeasures at the stage of pollutant load generation. Using mass balance techniques, actual samples and measurements, or by referring to the literature, reliable values of the pollutant load factor of household wastewater were obtained for both the residential and occupational population and after every type of treatment system. Then, to verify the reliability of these values, the flow-out rate of the pollutant load from small river basins was investigated in fine weather. The results show that the proposed values of the pollutant load factor were appropriate, and cesspool night soil and miscellaneous household wastewater are the main causes of the pollution of nearby waterbodies. The results of several experiments show that awareness regarding pollutant load at the stage of its generation, e.g. in cooking and dining, can greatly reduce the pollutant load.

scholarly journals Effective Monitoring of Small River Basins

2002 ◽  
Vol 2 ◽  
pp. 1017-1021
Author(s):  
W. Symader ◽  
R. Bierl ◽  
A. Krein
Keyword(s):  
Water Quality ◽  
Fine Particles ◽  
River Basins ◽  
Small River ◽  
Chemical Data ◽  
Quality Data ◽  
Monitoring Station ◽  
Small Rivers ◽  
Water Quality Data ◽  
Short Pulses

As the transport of many pollutants occurs during high floods monitoring programs must focus on these intermittent events. In small rivers the pollutants start their travel as short pulses often associated with fine particles, but disperse on their way downstreams. Therefore the chemical data of a flood event are only representative of a small part of the basin adjacent to the monitoring station. This is usually not taken into account by evaluating water quality data.

Application of geomorphometric analysis for small river basins in the Selenga middle mountains (on the example of Tarbagatayka river basin)

2019 ◽  
Vol 948 (6) ◽  
pp. 30-38
Author(s):  
M.Y. Opekunova ◽  
A.V. Bardash
Keyword(s):  
River Basin ◽  
Water Flow ◽  
Total Curvature ◽  
River Basins ◽  
Surface Curvature ◽  
Small River ◽  
Basin Analysis ◽  
Coding System ◽  
System Maps ◽  
Middle Mountains

The authors present the data of a geomorphometric Tarbagatayka river basin analysis (Selenga middle mountains) for the purpose of subsequent geomorphological zoning within the framework of allocating the erosion-and-accumulative potential of the basins. The basis for the surface curvature maps were the creation of a DEM basing upon ALOS data, the construction of water flow orders’ scheme in the Straler-Filosofov coding system. Maps of horizontal, vertical and total curvature were obtained, statistical coefficients of these indicators were determined for each of the basins of the 3–4th order and in general for the Tarbagatayka. In the Tarbagatayka basin both in terms of plan and profile convex shapes of the surface pre-dominate, variations in curvature indices correlate well with the morphostructural plan of the territory, which is illustrated by the map of the total curvature. Applying the vector ruggedness measure (VRM) together with surface curvature maps can be used later to determine the erosion-accumulative potential of basins using the methods of structural basins’ coefficients. This approach can be successfully implemented in geomorphological studies and within the framework of the basin concept as well.

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