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

3. Deviation from Historical Average
Long-Term Changes
Well or Spring
Current Reading
Year Ago
One Year Deviation
Deviation from Historical Average
J-27
837.2 msl (10/16)
843.9 msl
-6.7 ft
-33.6 ft
J-17
638.6 msl (10/16)
649.2 msl
-10.6 ft
-25.1 ft
Comal Springs
129 cfs (10/15)
211 cfs
-82 cfs
-152 cfs
San Marcos Springs
115 cfs (10/15)
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. Seasonal Drought Outlook
August 15 – November 30
5.56” wide
September 19 - December 31
100
3.2
Seasonal Drought Outlook
Prediction: ENSO neutral

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