Boothroyd, R.J.; Williams, R.D.; Hoey, T.B.; Tolentino, P.L.M.; Yang, X.

River channel migration and characteristics from 1988 to 2019 at 74 bridges in the Philippines

The data set contains the Philippines bridge inventory, river migration geodatabase and source code to assess active river channel change (i.e. planform adjustments) using Landsat 5, 7 and 8 products in Google Earth Engine. The data set contains hydro-morphological and bridge characteristics for 74 bridges (> 200 m deck length) in the Philippines from 1988 to 2019 and is available in .csv and .shp format. For a given region of interest (ROI), the code will extract active river channel masks, calculate similarity coefficients between active river channel masks at decadal intervals and calculate active widths and centreline statistics. The code was used by Boothroyd et al. (in press) to investigate decadal river migration at critical bridge infrastructure in the Philippines.

Publication date: 2020-12-17

Get the data

This dataset is available under the terms of the Open Government Licence

This data is available as Comma-separated values (CSV), Shapefile or TIFF

You must cite: Boothroyd, R.J.; Williams, R.D.; Hoey, T.B.; Tolentino, P.L.M.; Yang, X. (2020). River channel migration and characteristics from 1988 to 2019 at 74 bridges in the Philippines. NERC Environmental Information Data Centre. https://doi.org/10.5285/2efd24f9-e745-4f54-8bbd-6439b0ad93e5

 

Where/When

Study area
Temporal extent
1988-01-01    to    2019-12-31

Provenance & quality

Bridge characteristics were derived from a geospatial database of Philippine bridges retrieved in April 2020 from the Detailed Bridge Inventory Application (DPWH, 2020). The database was filtered to include only permanent bridges where the bridge deck length was equal to or greater than 200 m (n = 256). A visual inspection was performed to ensure that bridges were located at contemporary river crossings (n = 182) and only those bridges where the active river channel width exceeded 150 m (equivalent to five Landsat pixels) were retained for analysis (n = 74).

Stream network and geomorphology characteristics were derived from a nationwide digital elevation model (DEM) acquired in 2013 and generated through airborne Interferometric Synthetic Aperture Radar, with a 5 m spatial resolution and 1 m root-mean-square error vertical accuracy (Grafil and Castro, 2014) was used for topographic analysis and extraction of the stream network.

Google Earth Engine (GEE) was used to extract active river channel masks from Landsat 5, 7 and 8 satellite imagery. The workflow contained three main processing steps: (i) cloud masking and temporal compositing; (ii) active river channel classification; and, (iii) cleaning and image export.

Supplemental information

This dataset is a supplement to:

Boothroyd, R.J., Williams, R.D., Hoey, T.B., Tolentino, P.L.M., & Yang, X. (2021). National-scale assessment of decadal river migration at critical bridge infrastructure in the Philippines. Science of The Total Environment, 144460.

Correspondence/contact details

Dr. Richard Boothroyd
University of Glasgow
School of Geographical and Earth Sciences
UK
 richard.boothroyd@glasgow.ac.uk

Authors

Boothroyd, R.J.
University of Glasgow
Williams, R.D.
University of Glasgow
Hoey, T.B.
Brunel University London
Tolentino, P.L.M.
University of the Philippines
Yang, X.
University of North Carolina

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk
Rights Holder
University of Glasgow
 enquiries@ceh.ac.uk

Additional metadata

Topic categories
Structure , Inland Waters
Keywords
bridges,  Dice similarity coefficient,  Fluvial geomorphology,  Jaccard index,  Mapping Philippines river channel,  river migration,  RivWidthCloud,  stream network characteristics
Funding
Natural Environment Research Council Award: NE/S003312/1
Spatial representation type
Vector
Spatial reference system
WGS 84
Last updated
25 June 2021 18:39