FLOOD00228

• County: Statewide
• Community: All
• Stream Name: All
• Title: ASFPM Abstracts, etc. 1993
• Date: 1/1/1993
• Prepared For: ASFPM
• Prepared By: ASFPM
• Floodplain - Doc Type: Educational/Technical/Reference Information

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INTERFACE BETWEEN FLOODPLAIN MANAGEMENT RE:GULATIONS AND
ENGINEERING - THE CORRIDOR DEVELOPMENT CER'I'IFICATE PROCESS
IN THE UPPER TRINITY BASIN

Chris Brooks
Jack Tidwell

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Al:lstract

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On May 23, 1991, participating local governmen'ts in North Central
Texas took an important step towards achieving a COMMON VISION for
the Trinity River by approving the Corridor Development Certificate
(CDC) Process for the Trinity River Corridor. The development of
a common permitting process in the corridor stems from the findings I
of a 1987 Corps of Engineers Final Regional Environmental Impact
statement for the Upper Trinity River Basin. This report stated
that different local policies for construction in the corridor had
the Trinity River Basin. This report stated that different local
policies for construction in the corridor had the potential to
increase flooding risks, as well as increase water and
environmental degradation, for all of the con~unities along the
river. Since that time, the 14 local governments in the corridor
have adopted formal resolutions of support for a cooperative
program whereby each city retains development permit authority but
bases permit decisions on a set of commonly accepted flood plain
development criteria.

The CDC process has been incorporated as an integral part of the
Upper Trinity River Basin Feasibility Study. The cooperative
process has been developed to effect close coordination with the
Corps of other federal and state agencies which have their own
permit requirements. The participating local government will use
the CDC process to issue development activi.ty permits in the
portions of their jurisdictions in the corridor. This process
combines the use of corridor-wide development criteria and a multi-
jurisdictional review to ensure a comprehensive and equitable
consideration of proposed developments. Although each local
government will retain its authority to issue permits, the other
participants will have the opportunity to provide comments
regarding a proposed project.

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The area in the corridor affected by this proqram will fall into
two zones, the Regulatory and Review Zones. These zones are
generally based on the 100-year and Standard Project Flood
floodplains (respectively) as established by the Corps in the March
1990 Upper Trinity Reconnaissance Report. The RegUlatory and
Review Zone boundaries were approved by the Trinity River Steering
Committee in June 1991. The Regulatory Zone will be the area where
any development activity will require a CDC permit. The criteria
used in this area is based on stringent COE 404 permit criteria.
The effects that a proposed development will have on the valley