La Nana Bayou Watershed

La Nana Bayou
La Nana Bayou

La Nana Bayou is a 32-mile freshwater stream that extends from the confluence of the Angelina River south of Nacogdoches in Nacogdoches County to the upstream perennial portion of the stream north of Nacogdoches in Nacogdoches County. Routine water quality monitoring began in 1996 and led to the inclusion of La Nana Bayou on the Texas 303(d) List in 2000 as being impaired for bacteria. It remains impaired for not meeting its primary contact recreation standard. Concerns for elevated ammonia-nitrogen, nitrate-nitrogen and total phosphorous exist in the downstream portion of the bayou.

TWRI performed an initial analysis of the La Nana Bayou Watershed by completing a Watershed Characterization Report in 2019. This report analyzed potential causes and sources of pollution through the collection of water quality and watershed-related data, which will inform the upcoming watershed protection plan (WPP) development process. TWRI, the Angelina and Neches River Authority, and Stephen F. Austin State University will work with local stakeholders to create a plan that will address water quality issues in the watershed.

Lucas Gregory

Dr. Lucas Gregory currently serves as an assistant director and quality assurance officer for TWRI.


We recently published the Winter 2020 issue of our magazine, txH2O, highlighting the connection between water and health, including pathogens, poverty, PFAS and other water-health issues and developing potential solutions. 

Institute works with partners to improve water quality in East Texas

The Texas Water Resources Institute, Texas Commission on Environmental Quality and the Angelina and Neches River Authority will host a meeting Nov. 22 in Lufkin for anyone interested in water quality impairments in Jack, Cedar, Hurricane and Biloxi creeks, tributaries of the Neches River below Lake Palestine.

The Texas Water Resources Institute in collaboration with the Texas Commission on Environmental Quality will host two meetings Nov. 21 in Woodville and Jasper for anyone interested in joining a partnership to improve and protect water quality in the Sandy and Wolf creeks.

A Texas Watershed Steward workshop on water quality related to the Neches River will be held from 1-5 p.m. May 21 in Jasper. The workshop will be held at the Jasper County Courthouse Annex, 271 E. Lamar St. It will be presented by Texas A&M AgriLife Extension Service and the Texas State Soil and Water Conservation Board in cooperation with the Texas Water Resources Institute.

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    Upcoming Events

    Project Contacts

    Emily Monroe, Program Specialist I
    (979) 314-2358

    Carla Ethridge, Attoyac Bayou Watershed Coordinator
    (936) 633-7527

    Funding provided by the Texas Commission on Environmental Quality as part of a Clean Water Act Section 319(h) Grant from the U.S. Environmental Protection Agency.