10-Year Annual Recharge Average (2013-2022) 553,230 acre-feet
Provisional Daily Water Readings as of 17:00:30 PM, September 03, 2025
833.8
FT. AMSL
630.7
FT. AMSL
91
CFS
99
CFS
J-27 Well
833.5 FT. AMSL
J-17 Well
628.5 FT. AMSL
Comal Springs
81 CFS
San Marcos Springs
100 CFS
FT AMSL = feet above mean sea level
CFS: cubic feet per second
Last updated: September 03, 2025
This calculator is only available December 31st - January 31st. Please check back on December 31, 2025, to calculate your reductions for the year.
As part of a comprehensive effort to streamline processes for our permit holders and the regulated community, the EAA now offers an online payment program that allows individuals and business entities to pay for their transactions by credit card (American Express, Discover, MasterCard, or VISA) or by electronic check.
The payment site is operated and maintained by a secure, third party, payment processor. A convenience fee of 2.75% applies to all credit card transactions (a $2 minimum fee) and a $2.00 fee applies to e-check transactions. The EAA does not keep any portion of these convenience fees. After confirmation of payment, the EAA will coordinate internally to ensure your payment is posted to the correct account. This process may take up to 72 hours.
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