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Arroyo Colorado: Los Fresnos Nature Park LID and Wetland Enhancement

This project will install several low impact development features at a nature park, monitor stormwater features at nearby Los Fresnos High School, and use native vegetation to improve the function of a stormwater wetland.

Background

The Arroyo Colorado, an ancient distributary channel of the Rio Grande, extends about 90 miles from Mission to the Laguna Madre. The tidal segment of the Arroyo Colorado is impaired (not meeting Water Quality Standards) for periods of low dissolved oxygen and for high bacteria levels. In 2007, the Arroyo Colorado Watershed Partnership completed a watershed protection plan to address the impairments. Low impact development and wetlands are identified as management measures to control stormwater and reduce pollutants entering the waterways. This project implements these measures to reduce pollutant loadings from the City of Los Fresnos.

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Project Description

The Texas Water Resources Institute (TWRI) and the City of Los Fresnos are partnering to develop a 20-acre nature park with a bioswale to treat parking lot runoff, a pervious walking trail, a rainwater collection system, and related educational features. The Texas Stream Team will help them monitor the performance of stormwater best management practices at nearby Los Fresnos High School and use native vegetation to enhance the wetland receiving its parking lot runoff.

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Documents

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For More Information

To find out more about the NPS Program, call 512-239-6682 or e-mail us at nps@tceq.texas.gov.

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