A case study from Bolivia demonstrates that a relatively inexpensive economic analysis can develop a strong case for a watershed management project. - (DWG)
Distributed evaluation of the contribution of soil erosion to the sediment yield from a watershed
Drainage network ; Numerical model ; Sediment budget ; Sediment transport ; Soil erosion ; Suspended load ; Watershed
application of the widely used USLE formula. The formula is automatically applied along drainage networks derived from a digital elevation model and properly modified to take into account the presence of deposition zones in the watershed.
Historical land-cover changes and hydrogeomorphic adjustment in a small Georgia watershed
Channel geometry ; Georgia (USA) ; Gully erosion ; Historical geography ; Land use ; Lithology ; Plant cover ; Precipitation ; Rill wash ; United States of America ; Water regime ; Watershed
This study utilizes hydrologic modeling for discrete episodes of land use over a 160-year period, in a Georgia watershed, to portray the hydrologic adjustments that occur during a period of intensive land clearing and subsequent revegetation
Suspended sediment discharge in subsurface flow from the head hollow of a small forested watershed, northern Japan
Experiment plot ; Forest ; Hokkaido ; Japan ; Rainstorm ; Runoff ; Sediment budget ; Sediment transport ; Subsurface flow ; Suspended load ; Water erosion ; Watershed
Surface flow and suspended sediment discharge from the head hollow of the Jozankei Experimental Watershed in Hokkaido were measured to clarify the implications of subsurface hydrology for soil movement. Subsurface discharges during the extremely
Sediment yield during Late Glacial and Holocene periods in the Lac Chambon watershed, Massif Central, France
Deforestation ; Erosion rate ; France ; Holocene ; Human impact ; Lacustrine deposit ; Lateglacial ; Lithology ; Massif Central ; Sediment budget ; Slope gradient ; Watershed
A sediment budget for the Late Glacial and Holocene periods was calculated for the Lac Chambon watershed which is located in a formerly glaciated temperate crystalline mountain area. The purpose was to find the overall evolutionary characteristics
of the watershed reflecting the effect of non-varying parameters (size of the watershed, lithology, relief and tectonics), and to evaluate the effect of varying parameters (climate, vegetation and human-induced deforestation) on the sediment yield values for each
Deforestation ; Environmental management ; Forest ; Himalaya ; Land use ; Nepal ; Plant cover ; Watershed
Between 1978 and 1992, forest conversion in the two sub-basins of the Kair Khola watershed in the Chitwan District of Nepal was substantial. Although one turned into agricultural crop land and the other degraded forest, in both cases, inadequate
differing from the complete time series. Analysis of sunspot numbers, monthly precipitation records from the midwestern United States, and annual watershed discharge yield regimes that correlate to well-documented periods of extreme activity. Rescaling
An empirical approach was used to examine the morphology and behaviour of gullies along the eastern shoreline of Lake Huron, Canada. Gully and watershed dimensions and percentage vegetation cover of a sample of 44 gullies were measured from aerial
Bohemia ; Czech Republic ; Geographic research ; Groundwater ; History of geography ; Hydrology ; Prague ; Teaching of geography ; University ; Water quality ; Watershed
gauges and fog catchers installed at three elevations to study vertical and horizontal precipitation. Stream-gauging station and experimental test plots also used. Finding that deforestation has altered the area's hydrology, author calls for a watershed