Many engineering projects are undertaken on and around rivers, such as the construction of bridges and the placement of pipes under river beds. These engineering projects modify flow conditions away from those which occur naturally, inducing additional sedimentation and scour. This research will focus on a deep scour hole in the riverbed at the Alex […]

Dunes are common bed features in large sand-bedded rivers and are significant sources of in-channel roughness. Reliably estimating roughness is crucial for the prediction of flood flows, but roughness is crudely represented in hydraulic models widely used by environmental consultants and engineers. Roughness is treated as a calibration knob in these models, adjusted to force […]

Northwest Hydraulic Consultants Ltd. (NHC) is often involved in the restoration and design of steep streams. To date when assessing these river channels, NHC has relied upon experimental results conducted with fixed vertical river banks and a series of assumptions have been used to figure out how to make river channels with sloped banks. These […]

As the adverse effects of climate change continue to mount in natural fluvial environments, the balance of river channel characteristics (e.g. ecosystem health and biodiversity, water quality, flow turbulence and riverbed geomorphology) becomes increasingly vulnerable. In fluvial environments, erosion and deposition of bed material can pose a significant risk to channel bank stability, riverbed degradation […]

Northwest Hydraulic Consultants Ltd. (NHC) is often involved in the restoration and design of steep streams. To date when assessing these river channels, NHC has relied upon experimental results conducted with fixed vertical river banks and a series of assumptions have been used to figure out how to make river channels with sloped banks. These […]

Sediment processes are regularly disrupted in large sand-bedded rivers and deltas as a result of human development. Development of the Fraser River delta and estuary, associated with sediment dredging, dykes, and flow diversions has been linked to reduced volumes of sediment delivered to the delta front and systematic channel degradation. As a result, the delta […]

Riverbank erosion is a major threat to millions of Bangladeshi citizens who live in the vicinity of the country’s rivers, causing loss of life, land and livelihood. Sand-filled geotextile bags (geobags) are a solution to this problem and are widely used across Bangladesh to guide river flow and redirect channels in the wide braided rivers, […]

Many engineering projects are undertaken on and around rivers, such as the construction of bridges and the placement of pipes under river beds. These engineering projects modify flow conditions away from those which occur naturally, inducing additional sedimentation and scour. This research will focus on a deep scour hole in the riverbed at the Alex […]