Hydrologic Data Brief for the Edwards Aquifer - October 16, 2013

Hydrological data report for the Edwards Aquifer on October 16, 2013, covering current water levels, spring flows, long-term changes, well readings, and spring discharges. The report includes trends over the last 10 days, deviations from historical averages, and water level updates for various wells and springs. Additionally, it provides insights on seasonal drought outlooks and tropical weather forecasts.

• Hydrologic data
• Edwards Aquifer
• Water levels
• Springflows
• Long-term changes

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1. HYDROLOGIC DATA BRIEF FOR THE EDWARDS AQUIFER October 16, 2013 Prepared by: Geary Schindel Chief Technical Officer Edwards Aquifer Authority October 16, 2013

2. Current Water Levels & Springflows Well or Spring J-27* J-17 Comal Springs San Marcos Springs Trend over last 10 days +0.49 ft +0.26 ft -1 cfs Current Reading 837.2 msl (10/16) 638.6 msl (10/16) 129 cfs (10/15) 115 cfs (10/15) +4 cfs *Calculated from East Uvalde well water elevation

3. Long-Term Changes Deviation from Historical Average -33.6 ft Well or Spring J-27 Current Reading Year Ago 837.2 msl (10/16) 638.6 msl (10/16) 129 cfs (10/15) 115 cfs (10/15) One Year Deviation -6.7 ft 843.9 msl J-17 649.2 msl -10.6 ft -25.1 ft Comal Springs San Marcos Springs 211 cfs -82 cfs -152 cfs 150 cfs -35 cfs -42 cfs *Calculated from East Uvalde well water elevation

4. Well J-17 Water Level to Date (10-16-2013) .8 .92 107 650

5. Comal Springs Discharge to Date (10-16-2013) 150

6. San Marcos Springs Discharge to Date (10-16-2013) 80

7. Well J-27 Water Level to Date (10-16-2013)

8. 120 0.79 0.5

10. United States Seasonal Drought Outlook Graphic - click on image to enlarge August 15 November 30 5.56 wide 0 0 United States Seasonal Drought Outlook Graphic - click on image to enlarge September 19 - December 31 100 0 3.2 Seasonal Drought Outlook Prediction: ENSO neutral

11. Current Tropical Weather Outlook Tropical cyclone formation is not expected during the next five days