Slope-gully erosion relationship in small catchments of the middle reaches of the Yellow River
in a small catchment in the middle reaches of the Yellow River mainly come from slopes. The sediment sources from slopes are roughly 55, 60, 78, and 85% of the total sediment yield of a small catchment in Yangdaogou, Wangjiagou, Jiuyuangou and Nanxiaohegou
The paper discusses the results of hydrogeological studies carried out in the Montagna dei Fiori limestone ridge, between the Tronto and Tordino rivers, on the border between Marche and Abruzzo (Central Apennine). The hydrogeological results
and the evaluation of the hydrogeological water balance show that the Montagna dei Fiori ridge is a hydrostructure drained by the Castellano river and recharged by the precipitations and by the waters of the Salinello river. The effective infiltration is about 610 mm
Hydroclimate heterogeneity in the upper Deschutes River basin
Watershed processes are modeled by dividing the upper basin of the Deschutes River (Oregon) into four units with maximum hydroclimatic homogeneity. Author finds greater diversity between the sectors than precipitation of runoff amounts would suggest
Colorado ; Danube ; Environmental degradation ; Ganges River ; International laws ; International relations ; Legislation ; Pollution control ; Rhine ; River basin ; Stream ; Water management ; Water quality
Gravel sediment routing from widespread, low-intensity landscape disturbance, Current River basin, Missouri
Carrying capacity ; Drainage network ; Fluvial erosion ; Gravel ; Land use ; Missouri ; River bed ; Sediment load ; Sediment transport ; Spatial distribution ; Stream ; United States of America ; Watershed
bedload is moving in wave-like forms through Ozarks drainage basins. The objective of this report is to evaluate the longitudinal distribution of gravel along the mainstem of the Current River and determine the spatial and historical factors that have
Effects of climate change on soils in glacial deposits, Wind River Basin, Wyoming
In a detailed study of soils in the Wind River Range and Wind River Basin, characteristics of near-surface horizons do not follow age trends. However, the underlying carbonate-bearing horizons do have age-related characteristics. This soil paradox
The application of computational fluid dynamics to natural river channels : three-dimensional versus two-dimensional approaches
This paper addresses the recent trend in fluvial geomorphology towards using computational fluid dynamics to explore the adjustment between flow processes, sediment transport and river channel morphology. It aims to evaluate the extent to which 3D
within a gravel-bed river system with high relative roughness, are defined for each model.
Rates of stream incision in the middle part of the Arkansas River basin based on late Tertiary to mid-Pleistocene volcanic ash
Arid area ; Arkansas ; Fluvial erosion ; Lithology ; Pleistocene ; Pliocene ; River bed ; Stream ; Tephrochronology ; United States of America ; Volcanism ; Watershed
Ages and elevations of ash layers correlated with late Tertiary and Pleistocene eruptions in the western US and present stream elevations are used to calculate net rates of incision by streams in the middle reaches of the Arkansas River basin
The drainage of the Lake Ha!Ha! reservoir and downstream geomorphic impacts along Ha!Ha! River, Saguenay area, Quebec, Canada
On July 18-21, 1996, a severe rainstorm caused widespread flooding along the north shore of the St. Lawrence River. At the Lake Ha!Ha! reservoir, inadequate available capacity to spill during the storm at the outlet dam resulted in the overtopping
and erosion of a nearby earthfill saddle dyke. A new outlet formed at the site of the dyke, drained the reservoir over a period of many hours, and increased flooding. The flooding caused extensive geomorphic impacts along the river.
Stability of streambanks formed in partially saturated soils and effects of negative pore water pressures : the Sieve River (Italy)
Channel bed-level lowering along the Sieve River, Central Italy, has caused widespread bank instability. In the first part, bank erosion processes along the study river are examined, and the stability of the streambanks is analysed in order
Measured and predicted sediment yield form a subtropical, heavy rainfall, steep-sided river basin : Hanalei, Kauai, Hawaiian Islands
To determine the sediment yield of the Hanalei River basin, the AA. employ 3 methods : the Universal Soil Loss Equation (USLE); the thickness and calibrated radiocarbon age of fluvial deposits cored from the coastal plain; and field measurements
of suspended sediment in the river. However, the delivery of sediment in the Hanalei basin ranged between 45% and 101% of the maximum predicted USLE value. This higher than predicted yield may be the result of mass movement. The AA. are not able
Amerindians ; Arizona ; Conflict ; Dam ; Irrigation ; Legislation ; Planning project ; Resource management ; River basin ; United States of America ; Water resources
En prenant l'exmple de l'Arizona et de l'Active Management Area de Phoenix, l'A. présente deux accords indiens sur le régime juridique des cours d'eau, celui des Indiens Pima-Aricopa de la Salt River et celui des Indiens Apache-Mohave du Fort Mc
Dowell. Il présente aussi les revendications juridiques sur les eaux de la Gila River par les Indiens dans le contexte des tensions entre les législations fédérales et locales. Le rôle historique malencontreux du gouvernement fédéral en tant
qu'administrateur des biens des Indiens a été critiqué. De tels accords sont des jalons vers l'exploitation des bassins fluviaux à moyen et long terme (comme celui de la Gila River dans le bassin de la Colorado River). A côté de la sécurité juridique, une sécurité
Spatial distribution of human geomorphic activity in the United States : comparison with rivers
, and particularly in West Virginia and neighbouring states where coal mining is added to more general earth-moving activities. For comparison, rivers in the United States move less soil, and their influence is greatest in the western part of the country where steep
The transport of gravel in an ephemeral sandbed river
The channel dynamics of an ephemeral sandbed river, the Metsemotlhaba in southeast Botswana, were studied over a 5 year period using tagged magnetic particles of pebble and cobble size, scour chains and topographic cross-sections, with particular
Cyclic erosional instability of sandbars along the Colorado River, Grand Canyon, Arizona
The AA. present an overview of the Glen Canyon Dam environmental issue, a novel methodology for monitoring dam impacts on alluvial sediments, and three years of study relating to the stability of alluvial deposits along the Colorado River
Lateglacial river sediment budgets in the Maas valley, the Netherlands
This paper aims to explain the complex nature and causes of fluvial responses to climate change by calculating amounts of eroded, reworked and deposited sediment by different river types during Lateglacial warm and cold periods. 3 Weichselian
Vegetation controls on channel stability in the Bell River, Eastern Cape, South Africa
Channel instability has occurred in the Bell River in the form of meander cutoffs, a number of which have occurred since 1952. This study reports the results of an investigation into the effect of vegetation on channel form and stability over a 17
on morphogenic criteria and has a clear morphographic content together with some morphometric elements. The temporal evolution in regional landform patterns may be interpreted through examination of relic surfaces, river beds and beach ridges represented
on the map. The map also highlights the effects of human impacts on the evolution of the river system and coastal zone.