Supporting Measures

Additional measures to accomplish the goals of the Edwards Aquifer Habitat Conservation Plan

Supporting Measures

Net Disturbance & Incidental Take

The Incidental Take Permit (ITP) issued to the Edwards Aquifer Recovery Implementation Program by the U.S. Fish & Wildlife Services authorizes “take” of certain species (“Covered Species”) resulting from aquifer groundwater pumping and recreational and other activities in the Comal and San Marcos springs and river systems.

This “take” is authorized with the provision that a habitat conservation plan to protect the Covered Species is implemented—hence, the Edwards Aquifer Habitat Conservation Plan (EAHCP). The accurate and timely measurement of take—broadly defined as “anything that disrupts the routine activities of the Covered Species”—is fundamental to compliance with the ITP.

For more information concerning take assessment, how the HCP conducts this assessment in the Comal and San Marcos systems, and assessments conducted to date, please click here.


Applied Research

The EAHCP Applied Research program is essential in collecting data for the Ecological Model. This effort provides us with a more accurate understanding of the ecological dynamics of the Comal and San Marcos springs, particularly under low-flow conditions.

For all Applied Research final reports, click here.


Ecological Modeling

An ecological model is a computer-based simulation of an ecological system. This simplification of real-world senarios within the Comal and San Marcos spring systems help us (1) better understand ecological relationships, processes, and interactions of the systems being studied; (2) project ecological responses over time; and (3) predict ecological responses to changes in envirnomental condidtions.

For the Ecological Modeling Scope of Work and Work Plans, click here.


Biological Monitoring

A comprehensive biological monitoring program was established by the EAA in 2000 to gather baseline and critical period data to fill important data gaps in the ecological conditions of the Comal and San Marcos springs ecosystems. This comprehensive monitoring plan will continue to accumulate data for refinement of estimates of "average" conditions. Additional monitoring during low-flow periods will enhance knowledge about the species during various conditions.

The Biological Monitoring Annual Reports and the weekly low-flow memos can be found by clicking here.


Expanded Water Quality Monitoring

The EAA operates five continuous water quality monitoring stations in the Comal and San Marcos Rivers as a part of the EAHCP. Maps presented below show the locations of the three sites in the Comal and two in the San Marcos:

To view the Annual Expanded Water Quality Monitoring Reports, click here. For data access, please contact EAHCP Chief Science Officer Dr. Chad Furl.


Refugia

EAA will support and coordinate the construction of an off-site refugia facility in order to preserve the covered species population in the event of a catastrphic event such as the unexpected loss of springlow or a chemical spill.

To read the Refugia Work Plans and Research Reports, click here.

© 2017 Edwards Aquifer Authority