scholarly journals Determination of potential retention of the Fryšávka River basin

2010 ◽  
Vol 58 (5) ◽  
pp. 263-270 ◽  
Author(s):  
Tomáš Mašíček ◽  
František Toman
Keyword(s):  
River Basin ◽  
Flood Control ◽  
Water Retention ◽  
Curve Number ◽  
Control Measures ◽  
Design Parameters ◽  
Software Products ◽  
Software Applications ◽  
Integrated Software

Hydrological models provide design parameters for the design of flood control measures. Runoff from the river basin is primarily determined by the amount of rainfall and water retention of the river basin. The Fryšávka River basin was chosen to determine the potential water retention of the river basin. Before the determination of potential retention preparatory work was carried out: description of the current state of land cover based on a detailed field survey, the representation of hydrological soil groups in the basin found in BPEJ (Bonitované půdně ekologické jednotky – Valuated land–ecological units) maps, delimitation of basin parts by the digital vector layer ZABAGED altimetry (Základní báze geografických dat – Fundamental base of geographic data) – 3D contour and evaluation of basin parts by the runoff curve numbers (CN). The processing of background data was performed by the program ArcGIS 9.2 of ArcView software products using a set of integrated software applications ArcMap, ArcCatalog and ArcToolbox. To assess the potential retention, as part of the hydrologic cha­ra­cte­ri­stics of the Fryšávka River basin, the curve number method, a modification of the deterministic episode model DesQ–MAXQ, was used. The average numbers of runoff curves and the data about potential retention of river basin parts are presented in the form of map outputs.

Comprehensive Flood Control Measures in the Tsurumi River Basin in Japan

1997 ◽  
Vol 22 (4) ◽  
pp. 252-258 ◽  
Author(s):  
Tadahiko Nakao ◽  
Koji Tanimoto
Keyword(s):  
River Basin ◽  
Flood Control ◽  
Control Measures

scholarly journals Survey of efficiency of erosion and flood control measures at the Němčický stream

2008 ◽  
Vol 2 (No. 3) ◽  
pp. 85-95 ◽  
Author(s):  
J. Uhlířová
Keyword(s):  
Flood Control ◽  
Water Retention ◽  
Arable Land ◽  
Erosion Control ◽  
Control Measures ◽  
Protective Measures ◽  
Water Quality Indicators ◽  
Long Term Observation ◽  
Experimental Basin

The article presents the initial part of the research of the efficiency of erosion and flood control measures designed in the experimental basin of the Němčický stream. A long term observation of discharges, rainfalls, and some water quality indicators was introduced at 2 experimental profiles. We have elaborated a study of the erosion threat for discovered areas, where the realisation of protective measures is necessary to reduce soil loss. Besides the erosion control, the sheet grassing contributes to a better water retention by the agricultural countryside. The efficiency of the designed measures ascertained by model evaluation proved that grassing of 49 ha of arable land (from total 183 ha) and the exclusion of erosive dangerous crops growing (on 21 ha) should decrease the centenary discharge by 18% and the amount of the transported suspended matter by 29%. The observation will continue after realisation of the erosion control measures and of a polder, which was designed for sufficiently effective flood protection, and the measurements will be compared with the preliminary and model values.

scholarly journals DETERMINATION OF SLOPE LENGTH AND STEEPNESS FACTOR (LS) FOR DURUJI RIVER BASIN

2021 ◽  
Vol 06 (06) ◽  
Author(s):  
Irma Inashvili ◽  
Keyword(s):  
River Basin ◽  
Soil Loss ◽  
Control Measures ◽  
Gis Technology ◽  
Slope Length ◽  
North Eastern ◽  
Successful Design ◽  
North Eastern Part ◽  
Soil Loss Equation

Based on the application of the Revised Universal Soil Loss Equation (RUSLE) and modern GIS technology (ArcGis 10.2.2.), the article presents a method for calculating the erosion potential of the relief (LS) of the Duruji river basin (north-eastern part of Georgia). The most erosion-hazardous areas have been identified, which is approximately 75.1% of the total area of ​​the Duruji river basin. It has been established that special attention should be paid to a detailed study of the identified erosional areas of the Duruji river basin, taking into account all the influencing factors on soil erosion for the successful design of erosion control measures.

scholarly journals The Use of Multi-Criteria Analysis for Identifying Areas Sensitive to Land Degradation and water Retention

2018 ◽  
Vol 37 (1) ◽  
pp. 90-100
Author(s):  
Marek Bednář ◽  
Bořivoj Šarapatka
Keyword(s):  
River Basin ◽  
Water Retention ◽  
Agricultural Land ◽  
Arable Land ◽  
Principal Component ◽  
Curve Number ◽  
Aggregation Index ◽  
Landscape Degradation ◽  
Catchment Areas ◽  
Average Size

AbstractThe article presents a method of selecting critical areas (4th river basin) in terms of landscape degradation, with an emphasis on water retention, from a relatively larger unit (3rd river basin). For this purpose, indicators that point directly or indirectly to soil and landscape degradation or water retention were selected with regard to the scale of processing. The indicators were processed in a multi-criteria context using principal component analysis, which, based on the spatial layout pattern of the indicators, assigns weights of importance. These weights were then subsequently used to calculate the aggregation index, which indirectly indicates the sensitivity of the area to degradation and, in particular, water retention. Two catchment areas of the 3rd order – Čížina and Kyjovka – with different soil, climatic and economic conditions were selected for the study. Among the indicators of water retention in the landscape, our analysis included the share of agricultural land in the total area, the share of arable land, the average size of the field block, soil degradation according to the degradation model, runoff curve number, potential water erosion and surface drainage. The resulting procedure can be used to evaluate smaller areas. For a more detailed solution, a number of other methods and indicators could be used, which are also outlined in the article.

scholarly journals Effects of polders on the course of floods in the watershed of the Tichá Orlice river

2008 ◽  
Vol 56 (4) ◽  
pp. 135-142
Author(s):  
Vladimír Pavlík
Keyword(s):  
Water Management ◽  
Flood Control ◽  
Control Measures ◽  
Protective Function ◽  
The Czech Republic ◽  
Small Water ◽  
Research Activities ◽  
Management Function ◽  
Basin Water

Polders show an important water-management function in the flood-control protection of watersheds. The course of actual floods in recent decades and effects of the water works on flood flows have proved the suitability of the construction within integrated flood-control measures in particular watersheds of the Czech Republic. To determine the transformation effect of flood-control measures in watersheds mathematical modelling is an important method, which is used not only in the preparation and design of retention areas but also in dealing with the flood protection of towns and villages. Easy verification of other measures in watersheds is also useful. Their implementation can be thus prepared for the future or it is possible to back off the intentions. In our case, a fact is advantageous that the model is ope­ra­ted in the workplace of the Elbe Basin water-management dispatching centre, which is compatible with assessed polders in the partial Elbe watershed, namely in the Tichá Orlice watershed and its partial Třebovka watershed. The polders assessed are situated on the Třebovka stream, which is the lar­gest tributary of the Tichá Orlice river. These dry reservoirs and the increased protective function of the Hvězda pond affect runoff from about 80 km2. Within research activities, possibilities were studied to obtain necessary retention areas in existing small water reservoirs. It became evident that the only rea­lis­tic solution was to increase protective functions of the pond Hvězda. Its present total retention space of 1.4 million m3 can be increased only by 0.35 million m3, however, in combination with the sophisticated lay-out of a new emergency spillway and outlet the whole retention space can be used much more effectively. To obtain other retention areas localities were found out in the whole upper watershed of the Třebovka stream, which fulfilled requirements for placing the adequate capacity of polders. Subsequent modifications of the Třebovka channel in the most endangered villages and towns and their capacity design according to transformation effects of selected reservoirs and measures, determination of their effect and comparison with profiles on the Tichá Orlice are the content of the paper.

scholarly journals An Analysis of Transboundary Water Resources: A Case Study of River Brahmaputra

1970 ◽  
Vol 7 (1) ◽  
pp. 135-141
Author(s):  
Debi Prasad Bhattarai
Keyword(s):  
Water Management ◽  
Water Supply ◽  
River Basin ◽  
Flood Control ◽  
Management Strategies ◽  
Integrated Approach ◽  
Control Measures ◽  
Brahmaputra River ◽  
Transboundary Water Resources ◽  
Political Boundaries

The need for water management on hydrological boundaries is mainly triggered by the growing competition for water or by the need to cooperate in an upstream downstream relation. For an institution operating on political boundaries, not coinciding with the boundaries of the river basin, it is very difficult to allocate or prioritise water or carry out flood control measures. A system of water management on political boundaries will induce the respective authorities to either monopolise the water supply sources within its area and to transfer the problem of flooding to downstream. In this article it is attempted to explore the major transboundary issues that need to be addressed in the whole Brahmaputra River basin. Sharing of resources, sharing of basic data and information and protection and preservation of ecosystem are identified as three major issues. In this context, controversial legal issues between the riparian nations in the past were also analysed which has triggered the scope for integrated approach to manage the Brahmaputra River basin. In the later part of the article, a critical analysis was made to understand the principles, approaches and instruments to address the above problems. Finally, some legal materials are presented which could be used as a basis for solving the major river basin issues.Key words: water management; diversifying water supply sources; water management strategies; NepalJournal of the Institute of Engineering, Vol. 7, No. 1, July 2009, pp. 135-141doi: 10.3126/jie.v7i1.2072

scholarly journals Hydrological forecast of maximal water level in Lepenica river basin and flood control measures

2006 ◽  
Vol 86 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Ana Milanovic
Keyword(s):  
Water Supply ◽  
Urban Development ◽  
Water Level ◽  
River Basin ◽  
Flood Control ◽  
Control Measures ◽  
The Other ◽  
Maximum Water Level ◽  
Maximum Water ◽  
Hydrological Forecast

Lepenica river basin territory has became axis of economic and urban development of Sumadija district. However, considering Lepenica River with its tributaries, and their disordered river regime, there is insufficient of water for water supply and irrigation, while on the other hand, this area is suffering big flood and torrent damages (especially Kragujevac basin). The paper presents flood problems in the river basin, maximum water level forecasts, and flood control measures carried out until now. Some of the potential solutions, aiming to achieve the effective flood control, are suggested as well.

scholarly journals A procedure for designing natural water retention measures in new development areas under hydraulic-hydrologic invariance constraints

2019 ◽  
Vol 50 (5) ◽  
pp. 1293-1308 ◽  
Author(s):  
Daniele Masseroni ◽  
Giulia Ercolani ◽  
Enrico Antonio Chiaradia ◽  
Claudio Gandolfi
Keyword(s):  
Natural Water ◽  
Water Retention ◽  
Curve Number ◽  
Design Storm ◽  
New Development ◽  
Storm Duration ◽  
Harvesting Systems ◽  
Correct Determination ◽  
Peak Runoff

Abstract In recent years, in Italy and elsewhere, regional regulations based on hydraulic-hydrologic invariance (HHI) principles have taken hold, especially for new development areas. Natural water retention measures (NWRMs) are among the most interesting options to provide the storage and infiltration capacities that are needed to achieve the HHI objectives. A procedure for the design of NWRMs in new development areas under HHI constraints is presented and is based on a simple combination of Soil Conservation Service Curve Number (SCS-CN) method for determining rainfall excess and lag-time method for simulating runoff propagation. Three types of NWRMs can be considered: rain barrels, drainage wells and drainage trenches; five types of synthetic hyetographs can be selected and three different approaches for the determination of critical storm duration applied. The results obtained by applying the procedure in a new development area located in northern Italy are illustrated and some general conclusions are drawn. It clearly emerges that practitioners should pay particular attention to the correct determination of design storm duration in order to avoid large underestimations of NWRMs size. Moreover, different combinations of the three NWRMs can provide the required reduction of peak of runoff after the transformation, but it appears that drainage trenches are more effective with respect to harvesting systems in reducing the peak runoff value.

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