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Topography, orthoimagery, topographic change, predicted hydraulic flow, and bedload transport rates of the Bislak River, the Philippines

Published by:
Environmental Information Data Centre
Last updated:
04 February 2026
Topic:
Not added
Licence:
None

Summary

For the Bislak River, the Philippines, this dataset contains: (i) topography and orthoimagery in 2019 and 2020; (ii) Digital Elevation Models (DEMs) of Difference; (iii) predicted depth, velocity and shear stress from HEC-RAS two-dimensional hydraulic model simulations for 10, 50 and 100 year return period flood scenarios; and (iv) calculated bedload transport for 10, 50 and 100 year return period flood scenarios. Shear stress predictions were combined with median (D50) grain size observations to compute bedload transport rates for four different river patterns (meandering, wandering, braided, deltaic). For the 50 year return period flood event, bedload transport rates were also calculated for the D16 and D84 grain size. Geomorphic change detection was used to identify geomorphic change which took place between 2014-2019 and 2019-2020. All geospatial data are in WGS 1984 UTM Zone 51N. This data was created as part of a numerical, two-dimensional hydraulic modelling investigation to predict patterns of flood inundation and bedload transport for the Bislak River Philippines under different flood scenarios (10-, 50- 100-year flood events). Full details about this dataset can be found at https://doi.org/10.5285/5b29d98e-28b6-4ca7-89b3-57174d6b404a

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Link to the data Format File added Data preview
Supporting information ZIP 04 February 2026 Not available
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Additional information

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Added to data.gov.uk
2026-02-02
Access contraints
If you reuse this data, you should cite: Quick, L., Boothroyd, R., Williams, R., Hoey, T.B., Tolentino, P.L. (2025). Topography, orthoimagery, topographic change, predicted hydraulic flow, and bedload transport rates of the Bislak River, the Philippines. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/5b29d98e-28b6-4ca7-89b3-57174d6b404a
Harvest GUID
5b29d98e-28b6-4ca7-89b3-57174d6b404a
Extent
Latitude: 18.34° to °
Longitude: 120.56° to 120.76°
Spatial reference system
Dataset reference date
2025-07-10 (publication)
Frequency of update
Responsible party
(pointOfContact, author, owner, custodian, publisher)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
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