2023 COASTAL MASTER PLAN. PDD Documentation 9
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INTRODUCTION
As Louisiana faces increasing threats from coastal flooding and sea level rise, there is a great need to
advance our scientific understanding of the coast and how coastal Louisiana will need to adapt to
future conditions. The Coastal Protection and Restoration Authority (CPRA) is undertaking this
challenge through six-year updates of Louisiana’s Comprehensive Master Plan for a Sustainable
Coast. The 2023 Coastal Master Plan builds on past progress and establishes a clear vision for the
future. It refines past plans by improving the methods used to ensure projects are evaluated as
efficiently, consistently, and effectively as possible.
As discussed in Appendix F: Project Concepts (Sprague, 2023a), previous master plan iterations
required hundreds of Excel spreadsheets, dozens of CSV files, and over forty unique Esri shapefiles to
measure, quantify, calculate, and aggregate project information, which in turn required frequent
manual data transfers between different modeling teams. Because the 2023 Coastal Master Plan is
intended to tackle the analysis of broader, more complicated projects than previous plans, a new
system was devised for defining and assembling the building blocks used to describe a project. This
new system streamlines this process by replacing the cumbersome spreadsheets and shapefiles with
four primary features:
1.
A centrally accessible PostgreSQL database, called the Project Development
Database (PDD), which houses tables of relevant project attributes, metadata, bid
items, costs, and any project-level outputs that may need to be passed between
modeling teams. Custom Structured Query Language (SQL) scripts are used to
access data directly from the PDD as needed and may be stored in the PDD as views
or materialized views.
2.
A python program, called the Project Costing Tool (PCT), which reads inputs from the
PDD, calculates quantities and costs of each feature within a project, and stores
values back into the PDD. Additional data processing scripts are used in conjunction
with the PCT to define project attributes and to streamline quality assurance and
control (QAQC) procedures.
3.
An Esri geodatabase, called the Project Development Geodatabase (PDG), which
contains the geospatial representations of all projects in three feature classes (for
points, polygons, and polylines); in future iterations of the master plan, geospatial
data is intended to be integrated into the PDD with a Spatial Database Engine (SDE).
While the PDG is the source of truth for all geospatial data, a copy of the PDG also
exists, referred to as the Mapping PDG, which joins project-level attributes from the
PDD to the points, lines, and polygons in the PDG. The Mapping PDG is automatically
re-created every time the PDD or PDG is updated.
4.
A reporting system (presently using Jaspersoft software) that reads from the PDD to