An integrated evaluation of the National Water  Model (NWM)–Height Above Nearest Drainage  (HAND) flood mapping methodology

Johnson, J. Michael; Munasinghe, Dinuke; Eyelade, Damilola; Cohen, Sagy

doi:https://doi.org/10.5194/nhess-19-2405-2019

Articles | Volume 19, issue 11

https://doi.org/10.5194/nhess-19-2405-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Advances in computational modelling of natural hazards and...

https://doi.org/10.5194/nhess-19-2405-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 11

Research article

|

04 Nov 2019

Research article |

| 04 Nov 2019

An integrated evaluation of the National Water Model (NWM)–Height Above Nearest Drainage (HAND) flood mapping methodology

J. Michael Johnson, Dinuke Munasinghe, Damilola Eyelade, and Sagy Cohen

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Final revised paper (published on 04 Nov 2019)
Preprint (discussion started on 02 Apr 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Interactive comment on "A comprehensive evaluation for the National Water Model (NWM) Height above Nearest Drainage (HAND) Flood Mapping Methodology" by Johnson et al.', David G. Tarboton, 18 May 2019
- AC1: 'Response to Dr. David Tarboton', J. Johnson, 03 Aug 2019
RC2: 'Call it an integrated evaluation?', D. Blodgett, 24 May 2019
- AC2: 'Response to Dr. David Blodgett', J. Johnson, 03 Aug 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (19 Aug 2019) by Albert J. Kettner

AR by J. Michael Johnson on behalf of the Authors (30 Aug 2019) Author's response Manuscript

ED: Publish subject to technical corrections (19 Sep 2019) by Albert J. Kettner

AR by J. Michael Johnson on behalf of the Authors (26 Sep 2019) Author's response Manuscript

Short summary

The coupled National Water Model (NWM)–Height Above Nearest Drainage flood mapping methodology provides the basis for operational flood forecasting across the continental United States. This paper evaluates how the method performs for 28 case studies using a historic archive of flood extents and a retrospective run of the NWM. We provide a summary of the results and discuss where the method is performing reliably, the general reasons for poor forecasts, and how the method might be improved.