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Abstract: Session E  2:20 pm (Back to Session E)
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Tarrant Regional Water District’s Organizational Strategy to Proactively Manage Large Woody Debris

Jeff Coffey
Tarrant Regional Water District
Fort Worth, Texas

Authors: Jeffery M. Coffey. MS, and Tin Hendon Tarrant Regional Water District

A primary mission of the Tarrant Regional Water District (TRWD) is water supply.  Located in one of the fastest growing areas of the country, TRWD supplies water to communities within the Dallas/Fort Worth Metroplex area that currently serve over 2 million customers.  A significant component of TRWD’s water supply system is a 40-mile stretch of open river channel between two TRWD reservoirs.  Recent investigations of daily flow volumes revealed significant water loss from this channel over the last 10 years.  In 2012-2014, TRWD removed several occurrences of Large Woody Debris (LWD) and recognized a brief but significant increase in flow volumes.  As such, TRWD is investigating the opportunities for increasing flow volume efficiency by actively managing LWD.  TRWD has developed a LWD Management Advisory Committee that will proactively address LWD to maximize the benefits and minimize the negative impacts of LWD.  The LWD Management Advisory Committee is composed of key individuals from affected departments within TRWD who are subject matter experts within each of their respective domains.  Members of the LWD Advisory Committee work together within an annual year-long cycle to establish LWD management priorities and provide advice to the LWD Operations Group prior to and during the removal/modification of LWD within the channel.  As annual LWD remedial work is conducted through the LWD Operations Group, members from our LWD Technical Services Group will insure that gauges and gates are performing as designed, and necessary hydraulic studies are being performed.  A key component of this strategy supports continuous research studies to better understand the positive and negative aspects of LWD and the impact to TRWD water supply operations. This presentation will illustrate TRWD’s findings, the current situation, the formation, structure, and primary activities occurring as we embark upon our first year of the TRWD LWD Management Strategy.