This study examines the adjustment of river systems in the Golan Heights to reservoir construction in small basaltic mountainous catchments where total water flow is impounded, and discusses comparisons with the effects of large dams on alluvial
Long profiles of the lower courses of the Lish and the Gish Rivers
Cours d'eau ; Darjeeling district ; Gish River ; Géographie de l'Asie ; Géomorphodynamique ; Géomorphométrie ; Hydrodynamique ; Inde ; Lish River ; Lit fluvial ; Profil longitudinal
River systems and flood problem in Jalparguri district, West Bengal
Rivers in this district of West Bengal alter the landscape by their floods, which are still a menace. An attempt has been made to depict the flood hazards in the river systems of the district. - (PLK)
The geographer's journal : across the river lies another country
Culturel ; Etats-Unis ; Géographie de l'Amérique ; Louisiana ; Mississippi River ; Mode de vie ; Peuplement ; Récit de voyage ; Répartition de la population
Travel account by a cultural geographer of the settlement and people along the Mississippi River south of New Orleans. - (DWG)
Application of stream ordering to the Ardeche River basin, southern France. Quantitative relief classification in the Ardeche River basin, southern France
The aim of this paper is to improve the understanding of the nature and dynamics of river channel patterns in the humid tropics through detailed survey and quantitative analysis of the plan geometry of alluvial streams in a seasonally wet humid
tropical environment. The implications of the findings for river management are also briefly highlighted.
Australia ; Carrying capacity ; Fluvial processes ; Hydrodynamics ; Methodology ; New South Wales ; River bed
The dynamics of river beds can be assessed from scour and fill data obtained from scour chains. Chain insertion, anchoring and relocation can be determined with minimal manpower by utilising a set of tested employment methodologies
. These are described in sufficient detail to allow fluvial geomorphologists, ecologists and river engineers to more commonly utilise chains in studies of river stability and river response.
Human impact on rivers in Hungary as reflected in changes of channel planform
Channel geometry ; Cross section ; Floodplain ; Human impact ; Hungary ; Hydraulic works ; Meander ; River bed ; Stream
In the second half of the 19th century, flood control measures radically changed the Hungarian river network. Channel length, slope and planform were all directly affected by regulation and also by subsequent river adjustment. In this paper selected
sections of 2 rivers are studied. Sinuosity and shifts and dimension changes of meanders are used to detect river mechanism countering or complying with the impact of human intervention.
Floodplain dynamics of a wandering river, dendrochronology of the Morice River, British Columbia, Canada
British Columbia ; Canada ; Crue ; Dendrochronologie ; Fluviatile ; Géographie physique ; Holocène ; Morice River ; Néoglaciaire ; Paléogéographie ; Paléohydrologie ; Plaine d'inondation
Dendrochronological techniques are used to develop a history of flood occurrence and relative stage for the middle section of the Morice River based on flood scars, bank under cutting dates and tree establishment dates on fluvial features. During
the Neoglacial the Morice River was more active than in recent times, and its channels occupied twice the present area.
River adjustment to changes in sediment load : the effects of tin mining on the Ringarooma River, Tasmania, 1875-1984
Années 1875-1984 ; Australie ; Capacité de charge ; Cours d'eau ; Exploitation minière ; Fluviatile ; Géographie physique ; Hydrodynamique ; Lit fluvial ; Modèle ; Ringarooma river ; Tasmania ; Transport sédimentaire
This paper is concerned with the impact of hydraulic tin mining on the Ringarooma River. It has two main aims : 1) to establish the transport history of the introduced debris over more than a century| and 2) to analyse the response of the river
Modelling the impact of anthropogenic modifications to river channels on the course of extreme floods
Czech Republic ; Flood ; Human impact ; Impact ; Modelling ; River bed
This paper presents the results of analysis of the impact of anthropogenic modifications to river channels on the course of floods by means of hydraulic modeling. The study is focused on the quantitative analysis of changes of the flow dynamics
in the river bed and in the inundation zone due to river network modifications. The one-dimensional hydraulic model HEC-RAS coupled with GIS is used to simulate the effect of the river channel changes on the course of extreme flood. - (EN)
Stream transformation index as an identification tool for the river network critical elements from the viewpoint of the flood risk
Czech Republic ; Flood ; Human impact ; Methodology ; River basin ; Spatial distribution
The paper presents a quantitative method for analysis and evaluation of the intensity and structure of anthropogeneous transformation of the river network and its spatial distribution. The Stream Transformation Index is derived based on them
subsequently, allowing for overall quantitative evaluation of the river network transformation intensity, and identification of critical elements in the river network from the viewpoint of potential affecting of the course and consequences of floods
. The methodology has been applied to the Sázava river basin in the Czech Republic, hit by the extreme flood from snow melt in 2006. - (EN)
Equilibrium and nonequilibrium conditions in dryland rivers
This paper critically examines equilibrium and nonequilibrium conditions in dryland rivers. After discussing the concept and nature of equilibrium, the AA. provide examples of nonequilibrium behavior in dryland rivers. They then use examples from
the Channel Country and the Northern Plains in central Australia to demonstrate that large sections of dryland rivers can be in equilibrium. The paper concludes with a discussion of the factors that may be important in determining whether a particular dryland
river, or reach of river, is in an equilibrium or nonequilibrium condition.
The application of palaeohydrology in river management
This paper reviews recent changes in river management. These changes are characterised by a move from the notion of rivers as stable equilibrium forms to one of dynamic responsive ecosystems. Palaeohydrology is shown to be capable of providing
important and relevant information to river managers. Furthermore a series of emerging frameworks for incorporating geomorphology in river management exist wherein palaeohydrological data and analysis can be directly interfaced with the river management
The fluvial process of the lower Yellow River and its extension of river mouth deposits.
The old beds of the Yellow River can be found almost everywhere on the North China Plain. The cyclical process of the estuary development, namely, rerouting, extending, and rerouting again, is an epitome of the estuary development in the past
but on a big scale now. The extension of the river mouth is the direct cause of aggradation of the river bed above the point of estuary pivot, arising from large sediment load consequent to soil erosion in the upland areas. (TNC).
20th century stage trends along the Mississippi River
This study compared 4 measures of river hydrology at the beginning (1910-1930) and at the end of the 20th century (1980-2000). River-stage data were statistically analyzed from 15 equidistant gauges along the main stem of the Mississippi River
. The findings revealed : significant changes in components of river hydrology between both time periods; varying patterns of change between the different river segments. Discussion of these results.
The separation of hydrological periods and description of river regimes by comparison of probability distribution of water stages by pentads
The paper deals with the problem of the investigation on river regime. The river regime is understood as some type and time structure of hydrological phenomena in the annual cycle. It has been accepted that hydrological periods are means
of the river regime investigations as well as the basis for its characteristics. 0n the example of the Prosna river were presented the usefulness of the described theoretical model and the methods for the separation of those periods in order to investigate
Middle-late Holocene river terraces in the Erhjen river basin, southwestern Taiwan - implications of river response to climate change and active tectonic uplift
The AA. reconstruct the Holocene river history of the Erhjen River by correlating river terraces aided by 28 radiocarbon dates at multiple sites. They conclude that genesis of river terraces is a result of complex interaction between factors
This research addresses 3 objectives : to provide a detailed description of the location, pattern characteristics and boundary conditions of wandering Miramichi rivers; to compare the pattern characteristics among wandering rivers within
the Miramichi basin and to other wandering, meandering and braided rivers; and to investigate formative processes for wandering Miramichi rivers. Wandering rivers within the Miramichi region occur in larger valleys located downstream of an abrupt change
in bedrock from resistive to more erosive bedrock lithology. Wandering Miramichi rivers may represent another anabranching river pattern type, different from anastomosed and previously described wandering rivers.