Northern Segment of the Edwards Aquifer Study S PRING 2014 Stephanie S. Wong and Joe C. Yelderman...
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![Page 1: Northern Segment of the Edwards Aquifer Study S PRING 2014 Stephanie S. Wong and Joe C. Yelderman Jr. Baylor University, Geology Department Tuesday, 11.](https://reader035.fdocuments.us/reader035/viewer/2022062515/56649ced5503460f949ba170/html5/thumbnails/1.jpg)
Northern Segment of the Edwards Aquifer Study
SPRING 2014
Stephanie S. Wong and Joe C. Yelderman Jr.Baylor University, Geology Department
Tuesday, 11 February, 2014
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Outline
1. Summary of summer 2013 dye trace study
2. Spring 2014 prioritiesi. Proposed Salado Spring dye trace
studyii. Instrumentationiii. Proposed Sanford Ranch dye trace
study
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Completed: Summer 2013 Salado Creek dye trace test
• July 31st – August 1st • Injection at Stagecoach Inn Cave well– Uranine at 8:30 am– Eosine at 2:30 pm
• 15 monitoring sites along Salado Creek– Control: Robertson Plantation– Upstream: 2 sites– Downstream: 12 sites
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EOSINEURANINE
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Findings• There appears to be groundwater discharge
across the creek from Big Boiling Spring.
• All the springs seem to be connected and function as an integrated system under low-flow conditions. – This supports the conclusion from USGS chemistry
results.– Managing the springs using the flow gage below
the springs appears reasonable.
• Flow from the Stagecoach Inn Cave well does not flow to Robertson Spring or upstream from Little Bubbly under low-flow conditions.
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Proposed: Spring 2014 Salado Creek dye trace test
• PURPOSE: To study the Salado springs system under higher-flow conditions
• OBJECTIVES: – Replicate summer trace test
under (injection point, monitoring locations)
– Refine sampling and monitoring
– Add monitoring locations
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New monitoring locations
• Robertson Spring• Little Bubbly• Salado Patio well?• Cemetery well
Little Bubbly spring run (Jan. 2014)
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Refine monitoring
• Refine amount of dye used – Less uranine, more eosine
• Two Isco automated samplers if possible– Big Boiling springs – one fracture– Anderson spring– Extend sampling time to
catch tail
• Employ larger field teams
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FIRST ARRIVAL
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North bank groundwater discharge
Salado Creek
Big Boiling Springs
?
?
• Source direction is unclear……
• Inject dye from north bank– Different dye
• Injection point:– Existing point, OR– Auger new hole
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Instrumentation
• Budgeted:–Weather stations (2-4) - $3000– Rain gauges (15) - $450– Data loggers (3) - $6000– Flumes and weirs (2-4 as needed) -
$6000
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Gault Site
Patterson’sCrossing
Rest-Stop well
Cemetery well
Datalogger
Weather station
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Future: Sanford Ranch dye trace test
• PURPOSE: To study groundwater flow and connectivity in a wider study area in the Northern Segment of the Edwards Aquifer
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Questions?