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Hourly One-Dimensional HEC-RAS Hydraulic Simulation Outputs Across Distinct Floodplain Reach Types in the Lake Champlain Basin, Vermont


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Created: Jul 31, 2026 at 5 p.m. (UTC)
Last updated: Aug 03, 2026 at 3:56 p.m. (UTC) (Metadata update)
Published date: Aug 03, 2026 at 3:56 p.m. (UTC)
DOI: 10.4211/hs.c0e14364799a4877a07d474485fdde53
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Sharing Status: Published
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Abstract

This dataset contains 1D HEC-RAS hydraulic simulation outputs used to derive dimensionless scaling parameters (friction and diffusion coefficient) for seven reach types in the Lake Champlain Basin, Vermont. For each reach type we developed our model using the reach-averaged cross section and channel slope of the medoid reach. We then varied the channel slope using the 25th and 75th percentile values across a range of flood recurrence intervals (Q2, Q10, Q50, and Q100).

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
45.0134°
East Longitude
-72.1731°
South Latitude
43.2411°
West Longitude
-73.4541°

Content

Readme.txt

Hourly One-Dimensional HEC-RAS Hydraulic Simulation Outputs Across Distinct Floodplain Reach Types in the Lake Champlain Basin, Vermont

This document provides supporting information for the available 1D HEC-RAS hydraulic simulation outputs spreadsheet. Column header descriptions are provided below.

Header Descriptions:

Percentile - Slope percentile
Plan - Flood recurrence interval
Vo (m/s) - mean flow velocity 
Area (m2) - wetted area 
Wetted Perimeter (m)
Hydraulic Radius (m)
Slope (m/m)
deltat (s) - time it takes for a flood wave to travel distance deltax
deltax (m) - reach length
Cr - Courant number
C* - Chezy conveyance coefficient
k - water surface parameter equal to 1 for non-ice covered rivers
yo (m) - mean flow depth
Fi - friction parameter 
Fc - friction parameter (Fi x Cr)
Fo - Froude number
D - diffusion coefficient

References

Ferrick, M. G. (1985). Analysis of river wave types. Water Resources Research, 21(2), 209-220.
Meselhe, E., Lamjiri, M. A., Flint, K., Matus, S., White, E. D., & Mandli, K. (2021). Continental scale heterogeneous channel flow routing strategy for operational forecasting models. JAWRA Journal of the American Water Resources Association, 57(2), 209-221.




 

Related Resources

This resource is referenced by Diehl, R. M., D. Baude, K. L. Underwood, J. E. Scamardo, K. Ojasanya, and B. C. Wemple. 2026. “ A Scalable Approach for Identification of Reach-Scale Hydraulic Processes to Support Flood Prediction Models.” JAWRA Journal of the American Water Resources Association 62, no. 4: e70145. https://doi.org/10.1111/1752-1688.70145.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Oceanic and Atmospheric Administration Cooperative Institute for Research to Operations in Hydrology NA22NWS4320003

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Scott Lawson University of Vermont VT, US
Patrick John Clemins Vermont EPSCoR, University of Vermont Maryland, US 4148074064

How to Cite

Baude, D., Diehl, R., Underwood, K. L., Scamardo, J., Ojasanya, K., Wemple, B. (2026). Hourly One-Dimensional HEC-RAS Hydraulic Simulation Outputs Across Distinct Floodplain Reach Types in the Lake Champlain Basin, Vermont, HydroShare, https://doi.org/10.4211/hs.c0e14364799a4877a07d474485fdde53

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

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

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