ACWA Decision Tree

The ACWA Decision Tree diagrams the flow of information, pathways and critical decision points for the application of key criteria associated with a decision. The diagram is read left-to-right. Common objects are color-coded to simplify and help organize understanding.

Each object in the ACWA Decision Tree diagram is identified with an alpha-numeric character(s) near the upper part of the object. The alpha-numeric identifier is keyed to additional narrative description that further characterizes the objects purpose or function. In this document, references to a Decision Tree object will be alpha-numerically referenced in parentheses ( ) following the descriptive reference.

The ACWA Decision Tree is segmented top-to-bottom, using alphabetical-only designators, into three primary tracks:

  • Data Collection & Monitoring Track (D.)
  • Assessment Track (F.)
  • Stewardship Implementation Track (E.)

The Assessment Track (F.) is further segmented horizontally, left-to-right, into three different phases, as:

  • Nomination Phase (A.)
  • Analysis Phase (B.)
  • Action Phase (C.)

The ACWA Decision Tree process starts in the Assessment Track (F.) and Nomination Phase (A.) with the Waterbody Nomination (1). End results yield three sets of ranked waterbodies and one set of unranked waterbodies, each requiring a unique set of stewardship action(s). The ranked waterbodies are categorized as:

  • Data Collection & Monitoring (5A)
  • Waterbodies At Risk (8A)
  • Waterbody Recovery (9A)

A fourth set of unranked waterbodies residing in the Stewardship Track also results, categorized as:

  • Adequately Protected Waterbodies (15A)

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