Towards efficient coastal flood modeling: A comparative assessment of bathtub, extended hydrodynamic, and total water level approaches

Hong, Yi; Kessler, James; Titze, Daniel; Yang, Qing; Shen, Xinyi; Anderson, Eric J.

doi:10.1007/s10236-024-01610-1

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…This study showed that UAVs are an effective tool for monitoring and planning for future impacts of SLR on coastal cultural heritage sites; however, there is still room for improvement. Previous studies have found that DEM-derived modeling can assist in the preliminary research of areas impacted by high water flooding [17,18,20,21]. UAV-SfM modeling methods can provide high-resolution DEMs, yet they are limited in capturing accurate ground elevation, particularly around densely vegetated areas and shorelines with high wave action [71].…”

Section: Limitations and Ways To Improve The Use Of Uavs To Monitor C...mentioning

confidence: 99%

“…Commonly known as the bathtub method, this approach identifies those cells in a DEM at or below a specified elevation or sea level scenario [16][17][18][19][20]. While this approach has been identified as a useful first step [21], several limitations exist for assessing potential impacts on coastal cultural heritage. For example, along the Eastern Hilo coastline on Hawai ′ i island, LiDAR DEMs available in SLR flood maps are almost 20 years old and have lower vertical and horizontal resolutions than UAV-derived products.…”

Section: Introductionmentioning

confidence: 99%

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Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Steward,

Ninomoto,

Kane

et al. 2024

Remote Sensing

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The use of Uncrewed Aerial Vehicles (UAVs) is becoming a preferred method for supporting integrated coastal zone management, including cultural heritage sites. Loko i′a, traditional Hawaiian fishponds located along the coastline, have historically provided sustainable seafood sources. These coastal cultural heritage sites are undergoing revitalization through community-driven restoration efforts. However, sea level rise (SLR) poses a significant climate-induced threat to coastal areas globally. Loko i′a managers seek adaptive strategies to address SLR impacts on flooding, water quality, and the viability of raising native fish species. This study utilizes extreme tidal events, known as King Tides, as a proxy to estimate future SLR scenarios and their impacts on loko i′a along the Keaukaha coastline in Hilo, Hawai′i. In situ water level sensors were deployed at each site to assess flooding by the loko i′a type and location. We also compare inundation modeled from UAV-Structure from Motion (SfM) Digital Elevation Models (DEM) to publicly available Light Detection and Ranging (LiDAR) DEMs, alongside observed flooding documented by UAV imagery in real time. The average water levels (0.64 m and 0.88 m) recorded in this study during the 2023 King Tides are expected to reflect the average sea levels projected for 2060–2080 in Hilo, Hawai′i. Our findings indicate that high-resolution UAV-derived DEMs accurately model observed flooding (with 89% or more agreement), whereas LiDAR-derived flood models significantly overestimate observed flooding (by 2–5 times), outlining a more conservative approach. To understand how UAV datasets can enhance the resilience of coastal cultural heritage sites, we looked into the cost, spatial resolution, accuracy, and time necessary for acquiring LiDAR- and UAV-derived datasets. This study ultimately demonstrates that UAVs are effective tools for monitoring and planning for the future impacts of SLR on coastal cultural heritage sites at a community level.

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Section: Limitations and Ways To Improve The Use Of Uavs To Monitor C...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Steward,

Ninomoto,

Kane

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

show abstract

Effects of river floods and sedimentation on a naturally dynamic Great Lakes estuary

Fitzpatrick,

Vaughan,

Dantoin

et al. 2024

Journal of Great Lakes Research

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Towards efficient coastal flood modeling: A comparative assessment of bathtub, extended hydrodynamic, and total water level approaches

Cited by 2 publications

References 37 publications

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Effects of river floods and sedimentation on a naturally dynamic Great Lakes estuary

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