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Use of RORA for Complex Ground-Water Flow Conditions

Water-Resources Investigations Report 2003-4304

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Abstract

The RORA computer program for estimating recharge is based on a condition in which ground water flows perpendicular to the nearest stream that receives ground-water discharge. The method, therefore, does not explicitly account for the ground-water-flow component that is parallel to the stream. Hypothetical finite-difference simulations are used to demonstrate effects of complex flow conditions that consist of two components: one that is perpendicular to the stream and one that is parallel to the stream. Results of the simulations indicate that the RORA program can be used if certain constraints are applied in the estimation of the recession index, an input variable to the program. These constraints apply to a mathematical formulation based on aquifer properties, recession of ground-water levels, and recession of streamflow.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Use of RORA for Complex Ground-Water Flow Conditions
Series title:
Water-Resources Investigations Report
Series number:
2003-4304
Edition:
Online Only
Year Published:
2004
Language:
ENGLISH
Description:
5 p.
Online Only (Y/N):
Y