INFORMATION SYSTEM REQUIREMENTS OF THE STATE ARE IDENTIFIED IN AN ANALYSIS OF INFORMATION NEEDS AND DATA AVAILABLE WITHIN WEST VIRGINIA'S CRIMINAL JUSTICE SYSTEM. SPECIFIC INFORMATION NEEDS ARE CITED AT THE LOCAL LEVEL (LOCAL LAW ENFORCEMENT, MUNICIPAL COURTS, JAILS, PROSECUTION, AND CIRCUIT COURTS) AND AT THE STATE LEVEL (STATE-LEVEL LAW ENFORCEMENT, CORRECTIONS, COURT SYSTEM, PROSECUTION, PUBLIC DEFENDER, AND OTHER STATE AGENCIES). A CONCEPTUAL DESIGN FOR A COMPREHENSIVE DATA SYSTEM IS CONSTRUCTED AROUND SEVEN BASIC GOALS. THE CONCEPTUAL DESIGN ENCOMPASSES AT LEAST 23 SEPARATE, COORDINATED INFORMATION SYSTEMS AND 3 STATE-LEVEL PUBLIC ORGANIZATIONS. A PLAN FOR IMPLEMENTING AND EVALUATING THE CONCEPTUAL MODEL IS PRESENTED, INCLUDING SCHEDULES, COSTS, AND ORGANIZATIONAL STRUCTURES. THE STATUS OF NATIONAL, STATE-LEVEL, AND LOCAL CRIMINAL JUSTICE INFORMATION SYSTEMS IS SUMMARIZED. APPENDED DOCUMENTS INCLUDE LETTERS OF COMMITMENT FROM PUBLIC OFFICIALS, STATUTES GOVERNING DATA SYSTEMS AND CRIME STATISTICS IN WEST VIRGINIA, AND EXAMPLES OF DATA ELEMENTS TO BE USED IN THE COMPREHENSIVE DATA SYSTEM.