Journal article
A Power Law Model for River Flow Velocity in Iowa Basins
Journal of the American Water Resources Association, Vol.54(5), pp.1055-1067
10/2018
DOI: 10.1111/1752-1688.12665
Abstract
This study explores power law relationships to estimate water flow velocity as a function of discharge and drainage area across river networks. We test the model using empirical data from 214 United States (U.S.) Geological Survey gauging stations distributed over the state of Iowa in the U.S. The empirical data are the measurements of the mean cross-sectional velocity and concurrent discharge. The data are used to estimate parameters for a state-wide model and to test for spatial variability for 15 large river basins contained within the state. Spatial differences among the basins are small but some parameters significantly differ from the state-wide model. Using individual station data, the authors also explore a simpler power law model that disregards dependence on the drainage area. Overall, the study shows that including drainage area improves the model. Our study provides parameter values that can be directly incorporated into a regional scale routing model, and provides a framework for developing flow velocity models for hydraulically similar rivers in the U.S. and the world.
Details
- Title: Subtitle
- A Power Law Model for River Flow Velocity in Iowa Basins
- Creators
- Ganesh Raj Ghimire - University of IowaWitold F Krajewski - University of IowaRicardo Mantilla - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of the American Water Resources Association, Vol.54(5), pp.1055-1067
- DOI
- 10.1111/1752-1688.12665
- ISSN
- 1093-474X
- eISSN
- 1752-1688
- Grant note
- DOI: 10.13039/100008893, name: University of Iowa
- Language
- English
- Date published
- 10/2018
- Academic Unit
- IIHR--Hydroscience and Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984197446102771
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