Title

A Nonlinear Multilevel Model for Regional Water Resources Planning

Document Type

Article

Journal/Book Title/Conference

JAWRA Journal of the American Water Resources Association

Volume

13

Issue

3

Publication Date

6-1-1977

First Page

611

Last Page

625

Abstract

A nonlinear multilevel transportation model is developed to study large‐scale allocations in a water resources system. The model uses a modified transportation matrix formulated with nonlinear cost functions as the basic subregional model and the goal coordination method for multilevel decomposition and optimization of the overall regional system. The model is applied to projected water requirements for Salt Lake County in 1985. Sources of water supply ‐ surface water, ground water, import water, and reuse of reclaimed wastewater on a restricted basis ‐ are available to satisfy water requirements for municipal, industrial, and agricultural sectors in four subregions. The conjugate gradient projection method is used to optimize the first level subregional models having cost functions of the form of C = aXb, and the second level problem is solved using the conjugate gradient method.

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