One Dimensional, Two Dimensional and Three Dimensional Hydrodynamic Modeling of a Dyked Coastal River in the Bay of Fundy

Abstract

The urban development in Truro, Nova Scotia is situated on the floodplain of the Salmon River near its outlet to the Cobequid Bay. Extreme water levels in the Salmon River estuary and its tributaries overtop the dyke system that protects the area from high tides, resulting in widespread flooding of roads, residences, schools, senior homes, offices, commercial areas, industrial facilities and agricultural land. These high water levels are a result of the complex interactions between large river flows, the highest tides in the world, mudflat sedimentation and ice jamming. This paper presents the details of the extensive hydrodynamic modeling that was carried out for the Salmon River estuary and its tributaries as part of a comprehensive flood risk study using the latest in 1D, 2D and 3D modeling software. An integrated 1D-2D PCSWMM model was used to simulate the hydrology and the dynamic interaction between river and tidal flows, dyke breaching and urban floodplain hydraulics; MIKE21 and MIKE3 models were used to simulate the tidal ingress and amplification between the Bay of Fundy and Salmon River estuary as well as sedimentation rates in the estuary; and a HEC-RAS model was used to simulate ice jamming. Together these models were used to quantify the flood extents of the Salmon River estuary and its tributaries and to evaluate the impacts of over 40 potential flood mitigation solutions.

The Agrihood Design: Valuation of Ecosystem Services for NbS Visions in Peri-urban Housing Estate Development, Bangkok, Thailand

“…Instead, we employed the conceptual, deterministic hydrologic/hydraulic model, PCSWMM (Personal Computer version of the Stormwater Management Model). PCSWMM is a robust physical/conceptual computational model that has been applied in urban water resource studies throughout the world (Shrestha et al, 2014;Irvine et al, 2015;Ho et al, 2015;Irvine & Chua, 2016;Marvin & Wilson, 2016;Akhter & Hewa,2016;Nasrin et al, 2017;Goncalves et al, 2018;Paule-Mercado et al, 2017;Akter & Alam, 2019;Beganskas et al, 2021;Piloti et al, 2020;Saurav et al, 2021;Sidek et al, 2021;Chitwatkulsiri et al, 2022).…”

Simulation of 2D Depth Averaged Saint Venant Model of Shatt Al Arab River South of Iraq

“…Model calibration is the process of adjusting values of model parameter to be within tolerable ranges so that the differences between simulated and observed value were reduced and within some tolerable limits of precision. Verification process is the following test analysis of a calibrated model against another independent data set to extra verify the model's capacity to represent the waterbody correctly [28].…”

Review of Mathematical Surface Water’s Hydrodynamic/Water Quality Models with Their Application on the Shatt Al Arab River Southern Iraq

“…However, the water quality of the river would be considerably improved with a 50% decrease in pollutants, (Chuersuwan et al, 2013). Marvin and Wilson (2016) showed how the Salmon River estuary and its branches were modelled using the most up-to-date 1D, 2D, and 3D modelling tools as part of a full study of flood risk. A combined 1D and 2D model adopted to simulate the interaction between the Rivers and tide and floodplain hydraulics.…”