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NGIAB Data Preprocess


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Created: Nov 06, 2025 at 4:52 p.m. (UTC)
Last updated: Nov 09, 2025 at 3:05 a.m. (UTC)
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Abstract

This tool prepares data to run a NextGen-based simulation by creating a run package that can be used with NGIAB.
It uses geometry and model attributes from the v2.2 hydrofabric more information on all data sources here.
The raw forcing data is nwm retrospective v3 forcing data or the AORC 1km gridded data depending on user input

Subsets (delineates) everything upstream of your point of interest (catchment, gage, flowpath etc) from the hydrofabric. This subset is output as a geopackage (.gpkg).
Calculates forcings as a weighted mean of the gridded NWM or AORC forcings. Weights are calculated using exact extract and computed with numpy.
Creates configuration files for a default NGIAB model run.
realization.json - ngen model configuration
troute.yaml - routing configuration.
per catchment model configuration
Optionally performs a non-interactive Docker-based NGIAB run.

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Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
NOAA Geostationary Extended Observations

How to Cite

Romero, E. (2025). NGIAB Data Preprocess, HydroShare, http://www.hydroshare.org/resource/969bd01a208841e6bd5e3565d4b70ffa

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

http://creativecommons.org/licenses/by/4.0/
CC-BY

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