2028 Regional Flood Plan Working Documents (2024-2028)

Documents applicable to developing the Second Planning Cycle Regional Flood Plans (2028) can be found at the following links. Additional documents will be posted as they become available. Dates listed on this webpage indicate the date the document was posted online, or if noted, the date the document was last updated.

Contract Documents and Guidelines

  1. Request for Applications Posting (11/09/2023)
  2. Application Instructions (Updated 02/15/2024)
  3. Application Checklist (Updated 02/15/2024)
  4. DRAFT Contractor (Planning group sponsor) Task Budget (11/09/2023)
  5. Board Item Document (11/09/2023)
  6. RFPG Sponsor Designation Form (12/04/2023)
  7. DRAFT Grant Contract (02/06/2024)
  8. Exhibit A Scope of Work (05/17/2024)
  9. Exhibit B Expense and Task Budgets (02/06/2024)
  10. Exhibit C Technical Guidelines (02/06/2024)
  11. Exhibit D Data Submittal Guidelines (02/06/2024)
  12. Exhibit E Original Application Cover Page (02/06/2024)
  13. Exhibit F Certification of Procurement of Professional Services (02/06/2024)

Supporting Studies & Materials

  • Benefit-Cost Analysis (BCA) Input Tool and Instructions: The TWDB funded and guided the development of a user-friendly benefit cost analysis (BCA) input interface in the form of a spreadsheet document. This is being provided alongside the guidelines. Summary of updates (01/26/2024)
  • Flood Planning Geodatabase Templates The TWDB generated template GIS geodatabases with multiple feature classes and tables for the RFPGs. Each planning group must fill the template geodatabase with relevant regional flood planning data. The template geodatabases are populated with feature classes and fields to match the specifications in Exhibit D: Data Submittal Guidelines. The geodatabase templates are being provided with the guidelines. (04/30/2021)
  • Flood Planning Data Hub: To support the Regional Flood Planning Groups (RFPGs), the TWDB has assembled a wide array of flood-related data. The data, all of which come from publicly available sources, has been centralized into a single, easy-to-use Data Hub. (04/30/2021)
  • Draft Floodplain Quilt: The floodplain quilt consists of multiple layers of data from various sources available throughout the state to ‘quilt’ together a single flood hazard dataset. The Quilt is only the starting point of flood hazard data for the RFPGs. RFPGs will need to review and potentially re-prioritize the quilt data as appropriate by location and incorporate additional information available in their respective regions. The draft floodplain quilt, floodplain quilt input viewer and prioritization are being provided alongside the guidelines. The first official quilt will be posted by mid-May. (04/30/2021)
  • Cursory Floodplain Dataset – Future Conditions (Year 2060): The TWDB flood planning division is currently working with Fathom, Aqua Strategies (ASI) and AECOM to develop future condition flood hazard coverage for the entire state of Texas for the year 2060. The analysis is expected to account for future climate variability and associated rainfall patterns, sea level rise, land subsidence and land use change. The dataset will be a statewide set of 3-meter resolution flood hazard rasters that includes probability frequencies of 20% (5-yr), 10% (10-yr), 4% (25-yr), 1% (100-yr), and 0.2% (500-yr) annual chance flood events each for 3 different climate scenarios. These datasets are in production and are expected to be available in late 2024. More information about this update is located HERE.

Administrative Documents

See Flood-Related Federal Funding Transparency Report

Regional Flood Planning Newsletters

Presentations

TWDB Communication

Emails from TWDB regarding guidance on regional flood plan development

Chairs Conference Call Documents

  • Materials associated with periodic conference calls between TWDB and the RFPG Chairs.

Previous Planning Cycle Information