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Introduction to the National Water Model

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Created:	May 20, 2025 at 6:26 p.m.
Last updated:	May 20, 2025 at 6:26 p.m.
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Abstract

About This Course
An introduction to the National Water Model (NWM). This course provides a brief history of how the National Water Model was created and how it is continually developing today. The different forecast model outputs produced by the NWM are explained in detail. The learner will understand the analysis and assimilation data output period. How the short, medium, and long-range forecasts work and how to read the acquainted data. Hands-on exercises will allow learners to interact with online interactive NWM maps and even make maps of their own using Python coding. Learners will also experiment with downloading NWM data from NOMADS (NOAA Operational Model Archive and Distribution System) and the Google Storage Bucket that can then be exported to a CSV file. Learners will apply their knowledge and skills of the NWM to a final project focused on solving real world problems.

Topics Covered
-History of the National Water Model. -Recent developments. -NWM forecasts (short range, medium range, and long-range forecasts). -Exploration of the NWM interactive map. -How to visualize forecasts using python. -Mapping forecasts with Xarray. -Subetting and exporting forecasts to CSV. -How to use hydrotools to export forecasts to CSSV. -Real world applications through various learning activities.

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Name	Value
page_url	https://edx.hydrolearn.org/courses/course-v1:BYU+NWM101+2021/about
thumbnail_url	https://ciroh-portal-static-data.s3.us-east-1.amazonaws.com/e6f85876-589c-4198-86dc-92d5799d0661.png

Credits

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
National Oceanic and Atmospheric Administration (NOAA), University of Alabama	CIROH: Enabling collaboration through data and model sharing with CUAHSI HydroShare	NA22NWS4320003 to University of Alabama, subaward A23-0266-S001 to Utah State University

How to Cite

Ames, D. (2025). Introduction to the National Water Model, HydroShare, http://www.hydroshare.org/resource/9e4f3e42f75249e2ac5d413eeb80ebf4

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

http://creativecommons.org/licenses/by/4.0/

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