Cop Abstract: Event sediment transport and yield were studied for 45 events in the upstream part of the 260 km agricultural Koga catchment that drains to an irrigation reservoir. Discharge and turbidity data were collected over a period of more than a year, accompanied by grab sampling. Turbidity was very well correlated with the sediment concentrations from the samples (r = 0.99), which allowe...

Sediment is the greatest pollutant of forest streams. In the absence of wildfire, forest road networks are usually the main source of sediment in forest watersheds. An understanding of forest road erosion processes is important to aid in predicting sediment delivery from roads to streams. The flowpath followed by runoff is the key to understanding road erosion processes. On rutted roads, the fl...

Abstract Sorghum is an important food security crop in Ethiopia. As the grain preferred for biomass equally farmers to use it as animal food. It a major lowland parts of eastern Amhara environment area best fits crop. The study was conducted with objective identifying high yielder and adaptable sorghum varieties moisture deficit areas region. Eleven genotypes including two checks were evaluated...

The lower Santa Maria River watershed provides important aquatic habitat on the central California coast and is influenced heavily by agricultural runoff. As part of a recently completed water quality assessment, we conducted a series of water column and sediment toxicity tests throughout this watershed. Sediment from Orcutt Creek, a tributary that drains agricultural land, consistently was tox...

Abstract. We develop a phenomenological model of suspended sediment transport on the basis data acquired in Capesterre river, which drains small tropical catchment Guadeloupe. The correctly represents concentration during floods, provided that relation between and water level forms counterclockwise loop. In model, properties river are all lumped into four parameters: settling velocity related t...

BACKGROUND Dar es Salaam has an extensive drain network, mostly with inadequate water flow, blocked by waste, causing flooding after rainfall. The presence of Anopheles and Culex larvae is common, which is likely to impact the transmission of lymphatic filariasis and malaria by the resulting adult mosquito populations. However, the importance of drains as larval habitats remains unknown. METH...

S AND COMMENTS RISK FACTORS FOR FRACTURES IN THE ELDERLY H Jacqrningadda, A Founier, D Commenges and J F Dartigues, France .............. 221 USE OF TOENAIL FLUORIDE LEVELS AS AN INDICATOR FOR THE RISK OF HIP AND FOREARM FRACTURES IN WOMEN NEW, OR BIASED, EVIDENCE ON WATER FLUORIDATION D Feskanich, W Owusu, D J Hunter et a/, USA ................................................ 221 ................