Geography's covert operation in water resource management
Applied geography ; California ; Man-environment relations ; Practice of geography ; Resource management ; United States of America ; Water ; Water management
Paper begins with a good review of the many ways that water is essential to humans. A. then reviews a survey she conducted of geography students and recent graduates at San Francisco State who are employed in water resource management. She discusses
Water supply and climate change in the Upper Deschutes Basin, Oregon
Carbon dioxide ; Climatic variation ; Flood ; Model ; Moisture ; Oregon ; Runoff ; United States of America ; Water ; Water budget ; Water management ; Water supply ; Watershed
Examination of how an atmospheric doubled carbon dioxide (2xCO2) climate in the Upper Deschutes Basin would strain regional water resources, as shown via a semi-distributed moisture budget (SDMB) model. Watershed climate simulation reveals a 25
Effects of water quality on infiltration, runoff and interril erosion processes during simulated rainfall
Belgium ; Clay mineral ; Comparative study ; Infiltration ; Italy ; Rainfall simulation ; Rill wash ; Salinity ; Soil ; Soil erosion ; Toscana ; Water erosion ; Water quality
This paper discusses the effects of water quality on the hydrological and erosion response of non-saline, non-sodic soils during simulated rain experiments. Two soils, a well-aggregated clay-rich soil developed on marine silty clay deposits
and a soil developed on silt loam, were selected and subjected to a series of simulated rainstorms using demineralized water and tap water. The hydrological response (infiltration, runoff), the physical degradation (soil surface roughness change and top-soil
China's regional water scarcity and implications for grain supply and trade
Agricultural hydrology ; Agricultural use ; Cereal ; China ; Eastern China ; Economic efficiency ; Hebei ; Henan ; Irrigation ; Shandong ; Water ; Water deficit ; Water economics ; Water needs ; Water resources
Assessment of water erosion processes and dynamics in semi-arid regions of southern Africa (Kwazulu/Ntal, RSA, and Swaziland) using the erosion response units concept (ERU)
Arid area ; KwaZulu-Natal ; Semi-arid area ; Soil erosion ; South Africa ; Swaziland ; Water quality ; Water resources ; Watershed
In southern African countries soil erosion and the related problems such as water quality issues or decreasing soil productivity are the main problems affecting the inhabitants of rural and urban areas. This study deals with the identification
aimed at developing an Integrated Water Resources Management System (IWRMS) for water resources analyses and prognostic scenario planning in semi-arid catchments of Southern Africa. - (NF)
Spatial variation of early season surface water chemistry in Kärkevagge, Swedish Lapland
This study examines the spatial variability of early season water chemistry in the arctic-alpine valley of Kärkevagge. The data demonstrate the spatially heterogeneous nature of water chemistry and the general patterns of chemical weathering
in the valley. Water chemistry in this valley is dominated by 2 anions, bicarbonate and sulfate. Spatial patterns of chemical constituents reflect the broad effects of local geology on surface water chemistry. In particular, they demonstrate the effects
that mineral species present in minor amounts have on basin-wide water chemistry.
Agricultural use ; Algeria ; Crop ; Drought ; Impact ; Observation network ; Rainfall deficit ; Water deficit ; Water economics ; Water management ; Water needs ; Water resources ; Water use
Design of environmental decision support system and its application to water quality management
China ; Delta ; Environmental management ; Geographical information system ; Guangdong ; Hydrodynamics ; Model ; Stream ; Water pollution ; Water quality
EDSS is a comprehensive software system for water quality management in tidal river networks in general and for the Pearl River Delta in particular. By combining the capabilities of geographical information system (GIS), database management system
, the system architecture, design features, implementation techniques and facilities provided. Thereafter, the core part of the system, the hydrodynamic and water quality models are descrbed briefly.
The waters off northern Iceland are subjected to extreme hydrographic variability on annual to decadal timescales. In years when cold low-salinity water moves coastward and sea ice is prevalent (i.e., the late 1960s), marine productivity of surface
waters is low because the water column is well stratified. In the opposite oceanographic mode, warm, salty Atlantic Water dominates the shelf and vertical mixing results in high productivity. The AA. track these 2 contrasting modes by measuring
Water resources and environmental change in Spain. A key issue for sustainable integrated catchment management
Agricultural land use ; Agricultural retreat ; Climatic variability ; Integrated planning ; Irrigation ; Land use ; Spain ; Sustainable development ; Twentieth Century ; Water budget ; Water deficit ; Water resources ; Watershed
Water discharges determined from sediment distributions : a palaeohydrological method
localities, situated along the water flowline. The model reveals new information on ancient hydrological and sedimentological processes and events. Previously the model has been applied to forecast trap efficiency of reservoirs and predict reservoir