User Guide for LARM2: A Longitudinal-Vertical, Time-Varying Hydrodynamic Reservoir Model

A two-dimensional, laterally-averaged reservoir hydrodynamic model, LARM, was modified to provide several enhancements. The two major enhancements made to the numerical model were the incorporation of a water quality transport module (WQTM) and the capability to add or delete upstream longitudinal segments during flooding or drawdown. WQTM is a general-purpose transport algorithm for which the user must specify the water quality constituent with sources and sinks and the associated reaction rates. This user's guide contains an overall view of LARM2, a summary of its theoretical basis, a description of its application procedure, and an example. The appendices contain an input data description with examples and user notes for two auxiliary codes. In addition to this guide, there is a more detailed description of the modified model entitled 'Developments in LARM2: A Longitudinal-Vertical, Time-Varying Hydrodynamic Reservoir Model' (Edinger and Buchak 1983). Report on Environmental and Water Quality Operational Studies Program.