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  • Unimpaired and regulated discharge in the Sacramento River Basin, California
  • California ; Dam ; Discharge ; Fluvial hydrology ; Hydraulic works ; United States of America ; Watershed
  • Reservoirs alter monthly and annual discharge quantities in the Sacramento River Basin of northern California and this practice obscures the natural variability of river discharge. - (DWG)
  • The impact of climate on the discharge of the River Rhine
  • Climate ; Climatic variability ; Discharge ; Europe ; Impact ; Model ; Rhine ; Stream ; Water balance
  • In this book a first attempt has been made to provide a more detailed, quantitative assessment of the sensitivity of the River Rhine discharge to climate change. The attempt indicates the order of magnitude of the effect of a climatic change
  • . In this respect the sensitivity of the river has been analysed, a spatially distributed water balance model has been developed and finally discharge scenarios are assessed. - (AGD)
  • Bankfull discharge recurrence interval in gravel-bed rivers
  • Belgium ; Discharge ; Fluvial dynamics ; Fluvial hydrology ; Hydrological regime ; Inundation ; Lithology ; Stream ; Watershed
  • Bankfull discharge was identified in some 30 gravel-bed rivers representing in total c. 40 gauging stations. The catchment sizes vary from 4km2 to nearly 2700 km2. Bankfull discharge value increases with basin size. The selected rivers are spread
  • over 5 natural regions which show strong lithological differences. The AA. study the bankfull discharge recurrence interval for rivers flowing on permeable and impermeable terrain.
  • Effective discharge and gravel-bed rivers
  • Carrying capacity ; Colorado ; Discharge ; Fluvial hydrology ; Gravel ; Meltwater ; Mountain ; Rocky Mountains ; Sediment load ; Stream ; United States of America
  • Rivers with constraints on the mobility of bed material, typically armoured channels with steeper than average relationship of bedload discharge to water discharge, may have an effective discharge occuring at higher stages and greater recurrence
  • intervals than bankfull discharge. Bedload discharges were measured at 5 snow-melt dominated, gravel-bedded rivers in the northern Rocky Mountains, USA. Data indicate that, as the exponent of the bedload rating increases from typical to more steep values
  • , effective discharge increases from near-bankfull discharge to, in this study, about 1.3 bankfull discharge. This represents about a doubling of the recurrence interval.
  • Critical discharge for entrainment of poorly sorted gravel
  • Carrying capacity ; Discharge ; Fluvial dynamics ; Fluvial hydrology ; Fluvial processes ; Stream flow
  • Entrainment criteria for gravel-sized particles on river beds are usually defined in terms of shear stress, but some workers have proposed that critical-discharge relationships are more reliable and more convenient. Comparisons with published data
  • on critical discharges in a variety of rivers show that both the sensitivity of critical discharge to grain size, and the absolute levels of critical discharge, are predicted quite well. However, any prediction of critical discharge is sensitive
  • Velocity-discharge relationships in three lowland rivers
  • The use of different functional forms to describe the variation of velocity with discharge is explored for four cross-sections, nine short reaches (100-250 m), and three long reaches (2-7 km) in three lowland rivers in Lincolnshire.
  • Characteristics of sediment discharge in the subarctic Yukon River, Alaska
  • Alaska ; Cold area ; Discharge ; Meltwater ; Periglacial features ; Permafrost ; Seasonal variation ; Stream ; Suspended load ; Turbidity ; Yukon
  • The characteristics of sediment discharge in the Yukon River were investigated by monitoring water discharge, water turbidity and water temperature. The AA. use observational results of 1999 to characterize the Yukon sediment discharge and discusses
  • Analysis of the effect of changing discharge or channel morphology and instream uses in a braided river, Ohau River, New Zealand
  • Seasonal hydroclimate change in the Sacramento River Basin, California
  • California ; Discharge ; Fluvial hydrology ; Human impact ; Hydraulic works ; Hydrological regime ; Precipitation ; Seasonal variation ; United States of America ; Watershed
  • Reconstructed or unimpaired discharges for 1921 to 1994 for the Sacramento River are employed as an indicator of natural discharge and are analyzed for evidence of seasonal change with 2 questions : 1) are seasonal hydroclimate changes evident
  • in Sacramento River Basin unimpaired discharges? 2) if changes are evident, when did the change in unimpaired discharges first appear?
  • European rivers: first results
  • Several Central and West-European rivers were investigated within the framework of the SCOPE/UNEP study on Carbon transport in Major World Rivers. The rivers are sampled twice a year, i.e. in August/September at low discharge and in February/March
  • at high discharge. Preliminary results are presented here. The rivers Meuse and Scheldt have been sampled respectively at Heusden and Temse. (LW).
  • River sedimentation and channel adjustment of the lower Yellow River as influenced by low discharges and seasonal channel dry-ups
  • Carrying capacity ; Channel geometry ; China ; Discharge ; Huang He ; Seasonal variation ; Sedimentation ; Stream
  • Yellow River, the 3 types of sedimentation have been studied in relation to channel adjustment, emphasizing the changes under the conditions of low discharge and seasonal desiccations since 1986.
  • Determination of bankfull discharge magnitude and frequency : comparison of methods on 16 gravel-bed river reaches
  • Channel geometry ; Discharge ; Flood ; Floodplain ; France ; Garonne ; Hydrodynamics ; Loire ; Recurrence interval ; Seine ; Stream ; Stream flow
  • The aim of this paper is to test and analyse the sensitivity of : bankfull discharge magnitude according to the choice of bankfull elevation definition at river reach scale; bankfull discharge duration and frequency of exceedance according
  • Sediment and water discharge assessment on Santiago and Pánuco Rivers (Central Mexico) : the importance of topographic and climatic factors
  • Climate oscillation ; Discharge ; ENSO ; Fluvial dynamics ; Mexico ; Precipitation ; Sediment transport ; Stream ; Tectonics
  • This study explores the main factors controlling sediment and water discharge in the Santiago and Pánuco Rivers, the two largest rivers of central Mexico. Santiago River flows over a tectonically active margin draining to the Pacific Ocean
  • , and Pánuco River flows into the passive margin of the Gulf of Mexico. Mean annual and monthly values of suspended sediment load and water discharge spanning around 50 years were used to evaluate sediment load and water discharge in these two rivers
  • . The results indicated that Santiago River delivers to the ocean around 45% more sediment than Pánuco River. However, the AA. found that Santiago River has about half the water discharge of Pánuco River. The difference in sediment and water discharge for both
  • rivers are related to annual rainfall, and also to El Niño Southern Oscillation events.
  • The estimation of discharge and loads from the rivers flowing into littoral seas of China.
  • Average annual runoff and loads reaching the sea from the rivers in littoral areas of China are estimated at 1 800 km and 2 000 million tons respectively accounting for 4.6 % and 11.5 % of world total, while the content of soluble substance is about
  • the same as world average. Most discharge enters the Donghai, followed by Nanhai and the Pacific. Variations in runoff is affected by human activities besides natural precipitation. Since the last decade runoff discharged into Donghai decreased
  • Fluvial processes ; Holocene ; Hungary ; Hydrodynamics ; Palaeogeography ; Palaeohydrology ; Rainfall and discharge relationship ; River bed ; Sediment load ; Stream flow
  • Author determined the relationship between meander parameters and discharge from values for rivers in Hungary. Involving other river channel parameters he classified the rivers studied into two groups by gradient, channel material and the amount
  • Himalayan deforestation, changing river discharge, and increasing floods : myth or reality
  • Neither precipitation nor discharge data from the Chenub and other headwater streams validates the oft-repeated assertion that flooding on the Gengetic plain has increased (even though flood damage has increased). - (DWG)
  • Effective and bankfull discharges of streams in the Yampa River basin, Colorado and Wyoming
  • Spatial and scale-dependent controls on North American Pan-Arctic minimum river discharge
  • Alaska ; Arctic Region ; Canada ; Climatic change ; Discharge ; Fluvial hydrology ; Model ; North America ; Northwest Territories ; Scale ; Spatial analysis ; Stream ; Watershed
  • Spatial patterns of minimum monthly river discharge in the North American Pan-Arctic and its potential controls are explored with geographically weighted regression (GWR). Minimum discharge is indicative of soil water conditions; therefore
  • with annual mean river discharge, temperature at time of minimum discharge, and biome describes well the spatial patterns in minimum discharge. However, minimum discharge in larger watersheds is influenced more by temperature and biome distributions than
  • it is in small basins, suggesting that scale is critical for understanding minimum river discharge.
  • Discharge ; European part of USSR ; Flow ; Fluvial dynamics ; Fluvial processes ; Former USSR ; Region ; River bed ; Stream
  • Based on the calculations of river bed-forming water discharges on rivers (according to N. I. Makkaveyev's method) there is proved the scheme of regionalization of European territory of the Union according to the conditions of their distribution
  • . There are distinguished five sub-latitudinal zones and one meridional (the Urals) belt which differ according to the presence or the absence of the upper-range of the river bed-forming discharge which corresponds to the submerged flood-plain. For each region and district
  • is given the description of the river bed and its deformations which are correlated with the river bed-forming water discharges.―(L'A.).
  • Channel geometry ; Discharge ; England ; Flood ; Floodplain ; Fluvial hydrology ; Methodology ; River management ; Stream flow ; United Kingdom
  • All river engineering schemes require flood discharge estimates as part of the design and appraisal process. Research on the interrelationship of stream channel geometry and river discharge has provided the basis for an indirect method of flood
  • estimation, the channel-geometry method, which employs river channel dimensions alone to estimate discharge characteristics at ungauged river sites. Channel-geometry equations are developed empirically by relating streamflow data from gauging stations
  • and channel dimensions measured from natural river reaches in the vicinity of the gauge, and take the form of power function relations.