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Height Above Nearest Drainage Flood Extent Maps: Huallaga River near Chazuta, Peru

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Type: Resource
Storage: The size of this resource is 151.9 MB
Created: Feb 25, 2021 at 12:04 a.m.
Last updated: Mar 05, 2021 at 11:17 p.m.
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Content types: Single File Content  Geographic Feature Content  Geographic Raster Content 
Sharing Status: Public
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This resource contains flood extent maps of the Huallaga River near Chazuta, Peru derived from Height Above Nearest Drainage (HAND). MERIT Hydro global hydrography datasets (Hydrologically Adjusted Elevations, Flow Direction, and Upstream Drainage Pixel) were used as the input terrain data. The HAND raster and corresponding rating curve were creating using ArcHydro Pro tools in ArcGIS Pro. Specifically, this resource has a shapefile of flood extents for HAND values between 0-15, catchment and drainage line shapefiles, the HAND raster, and the rating curve as a csv. Using a flowrate, the HAND value can be determined from the rating curve. Then, the flood extent is the feature in the Chazuta_FloodExtent_HAND shapefile with the FloodValue attribute matching the Height value from the rating curve. As an example, this resource also includes a shapefile of the 5-m (Height value) flood extent along with the corresponding flood depth raster.

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Chazuta, Peru
North Latitude
East Longitude
South Latitude
West Longitude


Data Services

The following web services are available for data contained in this resource. Geospatial Feature and Raster data are made available via Open Geospatial Consortium Web Services. The provided links can be copied and pasted into GIS software to access these data. Multidimensional NetCDF data are made available via a THREDDS Data Server using remote data access protocols such as OPeNDAP. Other data services may be made available in the future to support additional data types.

Related Resources

The content of this resource is derived from Yamazaki, D., Ikeshima, D., Sosa, J., Bates, P. D., Allen, G. H., & Pavelsky, T. M. (2019). MERIT Hydro: A High-Resolution Global Hydrography Map Based on Latest Topography Dataset. Water Resources Research, 55(6), 5053–5073.
The content of this resource is derived from MERIT Hydro (available at

How to Cite

Edwards, C. (2021). Height Above Nearest Drainage Flood Extent Maps: Huallaga River near Chazuta, Peru, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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