Paper Info
Title
Development of a cross-section based streamflow routing package for MODFLOW
Abstract
It is challenging to simulate stream-aquifer interactions for the wide channel streams with the existing stream routing packages of MODFLOW. To overcome this limitation, a Cross-Section streamflow Routing (CSR) package is developed to simulate the streamflow and the interaction between streams and aquifers for the stream with a width larger than the MODFLOW grid size. In the CSR package, streams are divided into stream segments which are formed by two consecutive cross-sections. A cross-section is described by a number of streambed points that determine the geometry and hydraulic properties of the streambed. The stream water depth and streamflow at the cross-sections are related by the Single Channel method, the Divided Channel method, a data table or a power function. A rapid algorithm is used to compute the submerged area of the MODFLOW grid. The streambed conductance of a grid cell is computed based on its submerged area, streambed hydraulic conductivity and thickness. Stream-aquifer seepage is subsequently estimated as the product of the streambed conductance and difference between the stream stage and groundwater hydraulic head. Stream-aquifer seepage is treated as lateral flow in the streamflow routing computation with the Muskingum-Cunge method or mass conservation method. A hypothetical problem is established to test the capabilities of the CSR package with steady- and transient-state models. The results compare favorably with the SFR2 package and the HEC-RAS model. However, significant difference in flood wave attenuation is observed between the CSR package and the SFR2 package. It proves that the CSR package is capable of simulating the variation of stream-aquifer interactions in both space and time efficiently. The CSR package represents a certain improvement over previous MODFLOW streamflow packages by providing the efficient cross-section based computation and the unique capability of simulating streambed heterogeneity in longitudinal and transverse directions.
Year
DOI
Venue
2013
10.1016/j.envsoft.2013.09.012
Environmental Modelling and Software
Keywords
Field
DocType
stream-aquifer seepage,previous modflow streamflow package,sfr2 package,streamflow routing package,csr package,streambed conductance,streambed point,streambed hydraulic conductivity,stream-aquifer interaction,streambed heterogeneity,submerged area
Streamflow,MODFLOW,Hydraulic conductivity,Hydrology,Computer science,Flow (psychology),Communication channel,Hydraulic head,Aquifer,Grid
Journal
Volume
ISSN
Citations 
50,
1364-8152
1
PageRank 
References 
Authors
0.36
1
6
Name
Order
Citations
PageRank
Gengxin Ou192.66
Xunhong Chen230.75
Ayse Kilic310.36
Shannon Bartelt-Hunt410.36
Yusong Li591.78
A Samal61033213.54