1 / 20

Leona River

Leona River. SELECT Modeling and Potential Bacteria Sources. Texas Institute for Applied Environmental Research Stephenville, Texas January 24, 2013. Acknowledgements. Lead Agency - Texas Soil & Water Conservation Board Support provided by Nueces River Authority

vilina
Download Presentation

Leona River

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Leona River SELECT Modeling and Potential Bacteria Sources Texas Institute for Applied Environmental Research Stephenville, Texas January 24, 2013

  2. Acknowledgements • Lead Agency - Texas Soil & Water Conservation Board • Support provided by Nueces River Authority Texas A&M Dept Soil & Crop Sciences & Spatial Sciences Laboratory

  3. Modeling Bacteria Sources • SELECT (Spatially Explicit Load Enrichment Calculation Tool) • Developed by Dept. of Biological and Agricultural Engineering and Spatial Sciences Laboratory at Texas A&M University by Dr. R. Karthikeyan, Dr. R. Srinivasan and others

  4. SELECT • Identifies potential bacteria loadings by subwatershed based on input data • Spatial data, such as: • Land Use • Soils • Stream network provides a framework to visually representing input data and highlighting areas of potentially higher loadings

  5. Input Data • Population & Household Densities (Census data) • Livestock Densities • Stakeholder Input • Agricultural Statistics (USDA) County level data

  6. Input Data • Wildlife (native & exotic) • Stakeholder Input • Resource Experts (TPWD & others) • Domestic & Feral Animals • Stakeholder Input • Resource Experts (TPWD & others)

  7. Walnut Creek - Subwatersheds Source: Biological and Agricultural Engineering Department, Texas A&M University 7

  8. Walnut Creek - Potential E. coli loads Source: Biological and Agricultural Engineering Department, Texas A&M University

  9. Walnut Creek - Total Potential Daily E. coli load Source: Biological and Agricultural Engineering Department, Texas A&M University

  10. Potential Sources in the Leona • Wastewater Treatment Facilities • Uvalde • Batesville • US Fish & Wildlife Service National Fish Hatchery

  11. Potential Sources in the Leona • Concentrated Animal Feeding Operations • Chaparral Cattle Feedlot (Uvalde) • Live Oak Feedlot (Batesville) • Septage Sludge or Sewage Fields • None identified with permit review

  12. Potential Sources in the Leona • On-Site Sewage Facilities • What areas are on septic vs WWTF? • What kind of failures occur? • What is the “risk” of failure?

  13. Potential Sources in the Leona • Livestock based on County Statistics • Cattle & Calves (est. 28,000 head) • Goats (est. 6,000 head) • Sheep (est. 2,500 head) • Horses/Donkeys (est. 400 head) • Hogs (est. 100 head) Cattle, horses/donkey & hogs spread throughout Goats & Sheep primarily in Uvalde County Does this make sense for the watershed?

  14. Potential Sources in the Leona • What kinds of livestock operations primarily occur? • Cow/calf • Yearling • What stocking rates are reasonable • For rangeland? • For improved pastureland? Are there other types of livestock or types of operations that should be considered?

  15. Potential Unregulated Sources • Wildlife & Exotics • Deer – population estimates? • Exotics – population estimates?

  16. Potential Unregulated Sources • Feral Hogs • How large is the feral hog problem in the Leona? • Where do the hogs primarily “hang out”?

  17. Potential Unregulated Sources • Domestic Animals • Usually consider only dogs • Assume 1 dog per household Does this make sense for the Leona watershed?

  18. Next Steps • Complete land use update with the Spatial Sciences Laboratory • Obtain feedback on input information for SELECT http://www.leonariver.org/

  19. Contact Information Nikki Jackson Email: njackson@tiaer.tarleton.edu Office Phone: 254.968.1920 Anne McFarland Email: mcfarla@tiaer.tarleton.edu Office Phone: 254.968.9581

  20. Questions? Thank You Anne McFarland Texas Institute for Applied Environmental Research mcfarla@tiaer.tarleton.edu 254.968.9581

More Related