1. San Marcos & Texas State
2017 Nonroutine
Adaptive Management
San Marcos & Texas State
Water Quality
Protection Measures
Presentation to the IC
EAHCP Program Manager
February 2017

2. Introduction
Over the course of implementing the Conservation Measures associated with water quality protection in San Marcos, challenges, obstacles, and problems have been identified
Analysis conducted through the EAHCP supported WQPP research & development as well as through the larger WPP process
HCP provides a mechanism—the Adaptive Management Process—to address this issue

3. Water Quality Measures Affected
City of San Marcos
HCP § Sediment Removal below Sewell Park
HCP § Minimizing Impacts of Contaminated Runoff
HCP § Impervious Cover/Water Quality Protection
Texas State University
HCP § Sediment Removal in Spring Lake & Dam to City Park
HCP § Sessom Creek Sand Bar Removal

5. IC MEETING
HERE
City Park BMP
Downtown BMP
Hopkins BMP
Veramendi BMP
Hopkins BMP

6. Performance Comparisons
Comparison Metric
Veramendi BMP
Downtown BMP
Surface Area Capture
0.18 acres
32 acres
Total P Removed/Year
8.5 lbs
24.2 lbs
Comparison Metric
Hopkins BMP
City Park BMP
Surface Area Capture
0.1 acre
11 acres
Total P Removed/Year
6.4 lbs
16 lbs

7. Water Quality AMP #1 Timeline
BACKGROUND
Water Quality AMP #1 Timeline
Mar 2
PM submits AMP proposal #1 (“Minimizing Impacts”)
Mar 8
SC possibly recommends proposal & evaluation.
SC provides input on designs.
Mar 16
SH possibly recommends proposal.
IC possibly approves proposal and USFWS letter.

8. Sessom Creek Watershed
Reach-based restoration recommended

9. Sessom Creek Watershed

10. Water Quality AMP #2 Timeline
BACKGROUND
Water Quality AMP #2 Timeline
March 8
SC will endorse the creation of a Work Group.
July 31
PM submits AMP proposal #2 (“Sediment Removal/Water Quality Protection...”)
Aug 7
SC possibly recommends proposal & evaluation.
Sept 21
SH possibly recommends proposal.
IC possibly approves proposal and USFWS letter.