Upper Trinity River Transportation and Stormwater Infrastructure Project

Flooded Car Fire RescueRecent flood events in Texas have brought to the attention of the State the need for more comprehensive planning in urban areas. This is particularly important in the upstream portions of the Trinity watershed where urban growth and development is expected to continue and where unmanaged growth will have strongly negative consequences on downstream communities like Dallas and Fort Worth.  The North Central Texas region has a distinct window of opportunity to proactively engage in comprehensive planning efforts that integrate its transportation, environmental and stormwater needs in order to address the health, safety, and welfare concerns of the region while helping local governments manage their growth and development in a cost effective manner.

NCTCOG is currently pursuing funding from multiple partners and agencies to carry out Integrated Long-Range Planning of Regional Transportation and Stormwater Management in the western-most portion of the 16-county region that is also within the watersheds of the various Trinity River branches. The project area includes Wise County and portions of Dallas, Denton, Ellis, Hood, Johnson, Parker, and Tarrant counties. Common community development master plans incorporate roadways, water/wastewater infrastructure, parks, solid waste needs, and fire and police stations, yet stormwater is treated as “drainage as you build.” To learn from development mistakes of the past that have resulted in flooded roadways, neighborhoods, critical infrastructure, and businesses, NCTCOG wants to assist communities’ mitigation of these impacts before they happen through integrating long-range stormwater planning and creating a process that can be replicated nationwide. Goals and deliverables include: inventory of relevant data and stormwater management structures, land inventory and site-specific design considerations, plans to offset future transportation and indirect development impacts, and implementation with policy and mapping products and technical tools. Modeling and maps will be provided to cities and counties as a final product to assist them in regionally endorsed higher standards. The overall project is estimated to take 5 years once funding from multiple sources is secured.

TWDB 2021 Executed Grant Agreement


Transportation and Stormwater Infrastructure Subarea Meeting
April - May, 2023
April - May TSI Subarea Meetings Presentation

Integrated Transportation and Stormwater Management Initiative Informational Meeting
June 18, 2020

Download Presentation (PDF)

Integrated Transportation and Stormwater Management Initiative Kickoff Meeting

NCTCOG and the US Army Corps of Engineers kicked off the TSI project in August 2022 during four presentations to local government elected officials and staff.

Download Presentation (PDF)

Additional Documents

TSI Fact Sheet

July 8, 2019 Congressional Roundtable Presentation

March 18, 2019 Partner Discussion Presentation

Technical Advisory Group

The Technical Advisory Group was formed to provide input to the TSI Project team regarding policy, outreach, data, and challenges that communities face. The goals of the advisory group  are as follows:

  • Use technical and local knowledge to provide policy guidance and recommendations that should be developed or updated to the project team.
  • Provide technical input to identify gaps in the existing future planning landscape and share ideas of innovation.
  • Give feedback on data and modeling needs for the study area.
  • Provide guidance that helps project team produce products that benefit the intended communities and stakeholders.
  • Act as a link between project team and community leadership.
  • Support and represent the interests of stakeholders within a larger context of flood mitigation.
  • Advocate for TSI support in local communities and increase the projects visibility, both internally and externally.
  • Provide advice on overall approach best practices, lessons learned that will reduce the impact of flooding

3/6/23 - Technical  Advisory Group Meeting Presentation
3/6/23 - Technical  Advisory Group Meeting Summary


Green Asset Management Workshop

This hybrid workshop was held on May 16, 2023 in coordination with the U.S. EPA and City of Denton. The presentations from this workshop are linked below. 

Introduction to Green Asset Management - U.S. EPA
Incorporating Green and Natural Assets into Asset Management - Southwest Environmental Finance Center
Integrated Transportation and Stormwater Infrastructure (TSI) - NCTCOG
Integrated Stormwater Management (iSWM) Program Overview - NCTCOG
Green Asset Management - City of Denton
Green Asset Management, Inspection - USACE
Bioretention and Permeable Pavement Maintenance in the Context of Green Asset Management - Texas A&M AgriLife
Green Asset Management: Long-Term Funding Plan - U.S. EPA