Flood ; Flood control ; River basin ; Waterretention
The paper discusses a broad range of flood control measures designed mainly to increase waterretention capacity. It focuses on the main trends in flood control, i.e. on passive flood control and functions of dikes and retention basins. - (EN)
Chemical trap efficiency of a construction site storm-waterretention basin
Applied hydrology ; Heavy metals ; Nutrient ; Ohio ; Pollution ; Rainstorm ; Rill wash ; Suspended load ; United States of America ; Water management
Storm-water runoff from construction sites is an important source of nonpoint-source (NPS) pollution in an urban areas, and retention basins are widely used on construction sites to control NPS pollution. Data collected during storms for a retention
are to be developed to improve the chemical sediment-trap efficiency (TE) of retention basins.
Floodplain retention capacity assessment for Lužnice river
Czech Republic ; Digital elevation model ; Drainage ; Flood ; Flood wave ; Floodplain ; Geographical information system ; Lužnice river ; Model ; Stream flow ; Topography ; Waterretention
One of main topics of interdisciplinary project NIVA – WaterRetention in Floodplains and Possibilities of Retention Capacity Increase is the assessment of flood wave transformation in the floodplain. Despite the fact that the main influence
on flood wave transformation is flow retardation due to the flow velocity decrease, the retention in surface depressions within floodplain has been analyzed to get better overview of whole transformation process. Detailed digital relief model (DRM) has been
used for given purposes to be able to analyze terrain depressions volumes. The methodology itself is based on analysis of areas inundated by water at different elevation levels. The method was then applied on the area of Lužnice River floodplain section
to assess the retention capacity of real floodplain with natural character which usually means higher surface retention capacity in comparison to trained rivers. - (EN)
Natural iron precipitates in a mine retention pond near Jabiru, Northern Territory, Australia
The objectives of this paper are to: a) report on the detailed characteristics of the red-brown precipitates forming the sludge plumes in retention pond 4; b) describe and characterise the red-brown precipitate coating the organic mat over the pond
floor in areas adjacent to the plumes during times of low water level; c) speculate on the processes of formation of the precipitates, and; d) comment in their environmental significance.
Gdańsk ; Mathematical model ; Poland ; Waterretention ; Watershed
The paper aims at identifying retention types and their natural and anthropogenic determinants in the catchment of the Potok Oliwski, especially in its headwater section, by means of Mike She mathematic model. The calculations performed allowed
to determine that the studied area, due to natural factors, has high retention potential, mostly in the underground zones. - (BJ)
the depositional action of flood flow and the role of a floodplain in the transfer and retention of flood water. Results obtained are presented for three cross-sections located on mountain, foothill and piedmont rivers within the upper Vistula drainage basin
Statisticeskij analiz svjazi vodouderzivajuscej sposobnosti s drugimi fiziceskimi svojstvami pocv. (Stastistical analysis of correlations between the soil waterretention capacity and other physical properties)
Methods of correlation, regression and dispersion analysis were applied for the investigation of the granulometric composition and volume mass impact on the waterretention capacity in chernozems and meadow soils. The most close correlations were
The AA. focused on soil porosity, runoff and the waterretention capacity of soils with microbiotic crusts in Sahelian environments in Western Niger. The study aimed at highlighting soil hydrological processes at the surface of microbially covered
investigations and laboratory measurements of soil porosity and waterretention capacity. Final runoff values obtained on densely covered surfaces were significantly higher compared to those measured on surfaces with thin microbial cover due to the geometry
Values of runoff capacities, indicators of infiltration, retention and storage potential of the drainage area were used as differential parameters for the basic typology of rivers and watersheds where features manifest the Czech part of the Labe
river. The relationships of superficial and ground waters are discussed. - (MS)
This present study was to obtain information on moisture retention and release curves using both physical and chemical properties of the soils. The second objective was to advance the understanding of the physico/chemical behaviour of the soils
in relation to (an agronomic problem) mid-day water stress in the Sudan Gezira.
density, porosity and water content. Hydraulic properties that affect infiltration are waterretention, saturated conductivity and unsaturated conductivity. Rock fragments on the soil surface have been reported to both increase or decrease infiltration
constructed on dispersive soils as part of road cut embankments, or where culverts debouch water onto gentle, well vegetaed slope having a high waterretention and increased infiltration. - (AJC)
The role of vegetation in the retention of fine sediment and associated metal contaminants in London's rivers
conditions associated with river restoration may lead to enhanced retention of contaminated fine sediments, particularly around emergent plants, frequently leading to the development of submerged and emergent landforms and potential river channel adjustments.
[b1] Water and Environment, Atkins, London, Royaume-Uni
of soil series such as textural composition, organic carbon, calcium carbonate and hydrated ferri-oxyde-content, Cation Exchange Capacity (CEC), soil waterretention and hydraulic conductivity. Necessary input for the system are the soil series and some
The aim was to determine the extent to which the outflow can be influenced by the human interventions in three-selected water basins in Bohemian Forest and foothills. The runoff trend deviation has been related to the nature and human factors
, mainly to current climatic changes and changes of landscape retention potential. - (EN)