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TABLE OF CONTENTS cant. Chapter Page Infillration . 27 Surface Depression Slorage 27 Hydrograph of Rainfall Excess 27 Overland.Channel Routing 27 Channel Routing . 28 Model Verification 29 Computer Synthesis. 29 Model Verification 29 Model Calibralion for the Rural Watersheds 30 Daily time increment model 30 Hourly-time.increment model 32 Model Testing for Ihe Rural Areas 32 Daily time increment model 32 Hourly time increment model 32 Model Calibralion for the Urban Walersheds . 32 N CONCEPTUAL MODEL OF THE FLOOD CONTROL DECISION SOCIAL SYSTEM 41 Developing Ihe Conceptual Model 41 Designing a Flow Chart of the Conceplual Model 41 Basic Model Elements in Flood Control 41 Elements of an Open System Model 43 Elemenls of Ihe Conceptual Model . 43 Section One: Public Opinion. 43 Seclion Two and Three: Decision and Planning Agencies. 45 Characleristics of decision agencies. 45 The role of social power in agency action. 45 Characteristics of planning agencies. 46 Planning and decision functions . 46 Identifying flooding problems 46 Evalualing non-emergency flooding solutions 47 Distortion Factors (OF) 47 Section Four: Public Reaction 47 Perceived vs. real characteristics of a proposal 49 Function of predisposed public altitudes . 49 Non-proposal related factors affecting altitudes. 49 Section Five: The Final Decision and Alternative Actions 50 Section Six: Implementation of the Action Plan 50 The Decision Process and Some Important Theoretical Con- cepts. 50 Social Theorelical Aspects of Modeling the Decision Process 50 Importance Factors . 51 Acceptance Functions 52 Total Evaluation of a Proposal 52 Special Interest Group Funclions 53 Expansion Effect. 53 Threshold Level 55 V MATHEMATICAL MODEL OF THE SOCIAL SYSTEM. 57 Introduction of the Basic Elements of the Model 57 Purpose and Approach . 57 Flow Chart of the Mathematical Model 57 Detailed Development of the Malhematical Model. 59 Concepls in Formulations of the Mathematical Model 59 .t