Performance Standards Overview


Siltation of creeks and reservoirs

Reduced fish and wildlife habitat

Algal blooms and fish kills
 Increased growth of aquatic weeds

Reduced recreational opportunities because of bacterial contamination

Contamination of food and water sources


Travis County
(Lake Travis
Watershed)

Llano County
(portion)

Burnet County
(Colorado River
Watershed)

Total Area
1,172 sq. mi.

 Development (single family, subdivisions, multi-family, and commercial) that adds more than
10,000 sq. ft. of impervious cover or disturbs more than 1 acre of land

Mine or Quarry projects that create more than 10,000 sq. ft. of impervious cover or disturb more than 5 acres of land

Utility line construction and maintenance

Dredge and Fill Standards (No permit required)

Exemptions
 No Permit Required

Performance Standards
•
Pre-development Planning
• Water Quality Management information
•
Buffer Zones
•
Construction- Phase
Erosion and Sediment
Control
•
Water Quality Education
Minimum Requirements
Meeting with LCRA staff to review project
Plan showing drainage layout and BMP design
Plan showing buffer zones for creeks, and buffer zone protection measures
Construction-phase erosion control plan with details and specifications
Contact LCRA to initiate education program

• Design objective – manage Streambank Erosion and Stormwater
Pollutant Removal by intercepting and treating a water quality volume
• Design Storm – 1 year, 3 hour – 1.93”
• BMP Suites- primary and secondary BMPs
• Primary BMPs (water quality basins)
• Secondary BMPs (filter strips & infiltration devices)
• BMPs placed in series to manage channel erosion and treat runoff quality
• Pollutant removal performance – remove 70-75% of TSS, TP, oil and grease

• Bioretention basins (stand – alone)
• Extended detention basins*
• Sand filters*
• Wet ponds (stand-alone with vegetated bench)
• Wetland basins
• Retention – irrigation (stand – alone)
• Infiltration systems (secondary only)
*must be combined with a secondary BMP

Stand-alone bioretention basin Vegetated filter strip for driveway

Marble Falls – RSC Equipment – ED pond with secondary bioretention

Contacts
LCRA Watershed Engineering & Planning
512-473-3200 Ext. 2324
Supervisor: Erik Harris, P.E.
Ext. 2091
Permit Review:
Adam Boatright, P.E.
Dean Thomas, P.E.
Ext. 4080
Ext. 2892
Inspections:
Supervisor: David Williams
Mark Neuman – North
Brian Box - South
Melissa Gabriel –Maintenance
Ext. 3597
Ext. 2518
Ext. 3303
Ext. 2838 www.lcra.org
Go to “Water” then “Quality”, then select “Watershed Management Ordinance”