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Development of the Lower Nueces River Watershed
Protection Plan
Nueces River Watershed Partnership Stakeholder Meeting
July 22, 2014
Nueces River AuthorityTexas State Soil and Water Conservation Board
Why Do We Need a Watershed Protection Plan?
• Drinking water supply for nearly 500,000 people
• Prevent degradation which could lead to mandatory State and/or Federal remediation• Chlorophyll‐a Concern (2008)• TDS Impairment (2012)
• Primary source of fresh water, sediment and nutrients to the Nueces Estuary
39 River Miles116,863 Acres182.6 Square Miles
Goals and Objectives of theWPP and Partnership
• Improve and protect water quality for drinking and recreation
• Improve and protect habitat for wildlife • Enhance awareness of the need to protect the watershed through education
• Promote stewardship through stakeholder engagement • Improve aesthetics and environmental integrity to improve quality of life
• Leverage resources for the benefit of all
Results of Large Debris Survey
Large Debris Management Plan
Develop a management plan to address the large submerged debris
• Form a Subcommittee for input and technical advice• Prioritize items to be removed
• City of Corpus Christi• TCEQ• Other regulatory agencies?• Stakeholders
OSSF Management Plan• Subcommittee Met 06/24/2014• Meeting summary posted online• Develop a strategy to identify and prioritize likely problem areas • Proximity to the river and tributaries, unpermitted systems, no
systems• Develop a strategy for volunteer system inspections, assistance for repairs/replacements• Apply for grants, advertise for applications
• Identify possible funding sources• Economically Distressed Areas Program, Nonpoint Source
Programs, Clean Water State Revolving Fund
Regression Analysis 101• Flow Duration Curve
• Graph showing the flow rate versus time
• Time is illustrated as percentage
• Flow categories (low, mid‐range, high)
0
500
1000
1500
2000
2500
3000
4/1/1992
4/1/1993
4/1/1994
4/1/1995
4/1/1996
4/1/1997
4/1/1998
4/1/1999
4/1/2000
4/1/2001
4/1/2002
4/1/2003
4/1/2004
4/1/2005
4/1/2006
4/1/2007
4/1/2008
4/1/2009
4/1/2010
4/1/2011
4/1/2012
Flow over time at Station 12964
1
10
100
1000
10000
0% 20% 40% 60% 80% 100%
Daily streamflo
w (cfs)
Percent of days flow exceeded
Flow Duration Curve
Regression Analysis 101
• Load Duration Curve• Combines concentrations of a pollutant with flow to develop a load
• Illustrates the allowable load of a pollutant versus flow to meet standards
• Illustrates the measured load versus the allowable load
• Determine percent reduction needed to meet standards
TMDL = Flow * Standard * Conversion Factor
1
11
110
1,100
11,000
1,000
10,000
100,000
1,000,000
10,000,000
0% 20% 40% 60% 80% 100%
tons/day
kg/day
Load Duration Curve, Station 12964, Chloride
TMDL
Load = Flow * Concentration * Conversion Factor
1
11
110
1,100
11,000
1,000
10,000
100,000
1,000,000
10,000,000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
tons/day
kg/day
Load Duration Curve, Station 12964, Chloride n=65
TMDL Monitoried Loads
Load = Flow * Concentration * Conversion Factor
1
11
110
1,100
11,000
1,000
10,000
100,000
1,000,000
10,000,000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
tons/day
kg/day
Load Duration Curve, Station 12964, Chloride n=65
TMDL Monitoried Loads Load Regression Curve
11
110
1,100
11,000
10,000
100,000
1,000,000
10,000,000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
tons/day
kg/day
Load Duration Curve, Station 12964, TDS n=65
TMDL Monitoried Loads Load Regression Curve
TDS ImpairmentStandard: 500 mg/l
2012 Assessment: 546 mg/l
Chlorophyll‐a ConcernCriteria: 14.1 µg/l
2012 Assessment: 13/28 samples > 14.1 µg/l
0.11
1.1
11
110
100
1,000
10,000
100,000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
tons/day
kg/day
Load Duration Curve, Station 12964, Chlorophyll‐a n=65
TMDL Monitoried Loads Load Regression Curve
Don’t Mess With Texas Waters Campaign
Texas Well Owner Network PRIVATE WELL MANAGEMENT TO PROTECTHUMAN HEALTH AND AQUIFER INTEGRITY
Texas Well Owner Network PRIVATE WELL MANAGEMENT TO PROTECTHUMAN HEALTH AND AQUIFER INTEGRITY
Lower Nueces River Watershed Partnership Stakeholder Meeting July 22, 2014By: Jana Lloyd
• Educate residents about water issues, with a focus on groundwater
• Help Texans improve their water’s quality and quantity
• Help residents implement community watershed protection plans and participate in land and soil stewardship
About the Texas Well Owner NetworkAbout the Texas Well Owner Network
TWON Program Goals
• Improvement of private well management to safeguard homeowner health and protect water resources
Desired Outcomes• Changes in knowledge, awareness, attitudes and
actions of private well managers
Bring your well water samples
Well Screening:• Bacteria / Pathogens • Nitrate• TDS / Salinity
To register visit:
twon.tamu.edu
For more information contact:
Drew Gholson, TWON Program [email protected]; 979‐845‐1461
Update of Hyacinth Survey
• Observations via on the river (kayak / jet ski)?
• Observations via helicopter?
Additional Items?
Regional Conservation Partnership Program
Topics for next meeting? • Project Updates
– SELECT Modeling– Draft OSSF Management Plan
• New Nueces County Order for OSSFs
– Large Debris Management Plan– Cleanup on upper section
• Other?
• Date for next meeting?October 7October 14
Questions?
Rocky Freundrfreund@nueces‐ra.org
361‐653‐2110
http://www.nuecesriverpartnership.org/