Measurements in the macro-tidal Daly Estuary show that the presence of an undular tidal bore contributed negligibly to the dissipation of tidal energy. No recirculation bubble was observed between a trough and the following wave crest in the lee waves following the undular bore. This differs to stationary undular bores in laboratory experiments at larger Froude numbers where a recirculation bub...

any case himself, but he gave a description of what he had heard and asked for instructions in the matter. About the middle of November 1935, a field party was sent by the senior author to this place to carry out a preliminary investigation. Information collected showed that the ' disease' started suddenly in the latter part of September 1935 at Bolbule and Katakhali villages on the right bank ...

Triangulation of LiDAR data can produce unnatural water surface. Therefore, it is necessary to hydroflatten LiDAR data. Hydro-flattening is driven primarily by cartographic mapping needs, and can also help hydrologic analysis, because hydro-flattened surfaces behave naturally; allowing water flow from upstream to downstream. Detailed hydro-flattening requirements have been stated by USGS, which...

A new species of Bachia of the B. dorbignyi group, Bachia scaea sp. nov., is described from the left bank of the upper Madeira River, at Rondônia state, at the western Brazilian Amazonia. The new species resembles morphologically B. dorbignyi and B. peruana, and seems to be related with the former species based on molecular data (16S and c-mos sequences). Nonetheless the presence of a first tem...

Abstract The lateral migration of a river meander is driven by erosion on the outer bank and deposition inner bank, both which are affected shear stress (and therefore channel slope) through complex morphodynamic feedbacks. To test sensitivity to slope, we quantify slope change induced glacial isostatic adjustment along Red River (North Dakota, USA Manitoba, Canada) two its tributaries over pas...

This paper presents a method to quantitatively assess the impact of ice-affected hydraulics on hydropower operations using widely used HEC-RAS hydraulic model. The model was identify historical periods where downstream river ice growth reduced net head US Army Corps Engineers dam Pend Oreille River in Idaho, USA. create curves projected stage impacts based border and continuous bank-to-bank ice...

In August 2010, Pakistan experienced major floods and a subsequent cholera epidemic. To clarify the population dynamics and transmission of Vibrio cholerae in Pakistan, we sequenced the genomes of all V. cholerae O1 El Tor isolates and compared the sequences to a global collection of 146 V. cholerae strains. Within the global phylogeny, all isolates from Pakistan formed 2 new subclades (PSC-1 a...

countryside, whereas it was merely mentioned occasionally; nor could he tell me the names of the affected villages, though they were only eight miles away. Finding that Kaliaganj was not a suitable place for my purpose, I pushed on to Churli, a large village eight miles away, near which several cases of the disease were known to exist. Crossing the Mahanadi near the police-station, I followed i...

Even though soil loss in the lowlands imposes not as much a restriction on land use and agricultural productivity as in erosion affected mountainous areas, the input of fine sediment into the rivers and streams is a concern due to water quality issues and substrate siltation. Drains, river banks and agricultural fields are the three main sources of fine sediment in lowland regions. For a succes...