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Unsteady flow temporal scour evolution in Type A Piano Key Weir
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Created: Mar 06, 2024 at 5:45 p.m. (UTC)
Last updated: Oct 19, 2025 at 9:16 p.m. (UTC)
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Abstract

River flow characteristics are constantly changing in nature, and any structures built within river systems are subjected to a wide range of flow conditions. Alluvial riverbeds, in particular, experience both aggradation and degradation over time. Therefore, it is essential to investigate riverbed scour under variable flow conditions rather than assuming a constant, steady discharge.

This study examines the scouring behavior of an alluvial bed under varying discharges downstream of a Type-A Piano Key Weir. The following figures, videos, and tables present experimental results that support and illustrate the findings of this study.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Utah Water Resources Laboratory
Longitude
-111.7939°
Latitude
41.7397°

Temporal

Start Date:
End Date:

Content

Readme.txt 

Unsteady Flow Experiment for Type A PKW

Raw Data: 
The resource contains raw experimental data in pdf form for all the tests conducted at the Utah Water Research Laboratory. 

Analyzed Data:
The processed temporal scour evolution data is presented in the "Experimental data_analysis" folder. 
Python code for analyzing the theoritical temporal scour evolution is also attached here. 

Scour evolution Videos:
Due to limitaion of size, only one case study is attached here showing the scour evolution for an unsteady flow with 6 steps and a peak discharge of 600 lps.
To reduce the size of video the speed of video is increased.

Additional Metadata

Name Value
Experimental Raw Data This folder contains unprocessed experimental data in a pdf format.
ScourVideo_600lps_6N_1T This folder contains video showing temporal scour evolution recorded for unsteady flow with Qpeak of 600 lps with 6 steps in the rising limb.
Experimental Data Abalysis This folder contains processed data and python code for temporal scour evolution evaluation.

Related Resources

This resource is described by Panthi, M. (2025, April). A Laboratory Study of Local Scour and Driftwood Effects on a Type A Piano Key Weir. Utah State University, Logan, UT, USA.
The content of this resource references Lantz, W. D., Crookston, B. M., & Palermo, M. (2022). Evolution of local scour downstream of Type A PK weir in non-cohesive sediments. Journal of Hydrology and Hydromechanics, 70(1), 103-113.

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
Utah State University

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
Brian Crookston Utah State University ORCID
Michele Palermo Università di Pisa | UNIPI · Department of Energy, Process and System Engineering ORCID

How to Cite

Panthi, M. (2025). Unsteady flow temporal scour evolution in Type A Piano Key Weir, HydroShare, http://www.hydroshare.org/resource/74df51f215894747818db8d313916460

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

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

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