HLWO Technical Manual and Construction Standard Details
The Highland Lakes Watershed Ordinance Technical Manual is a guide for property owners, developers and engineers on LCRA permit requirements and review procedures. The manual includes best management practices for meeting the water quality and channel erosion protection standards found in the Highland Lakes Watershed Ordinance.
Water Quality Management Technical Manual
- Section I – Development
- Chapter 1 – Permitting Requirements and Procedures
- Chapter 2 – Development Activity Meeting Water Quality Protection Performance Standards
- Chapter 3 – Erosion and Sediment Control Best Management Practices
- Chapter 4 – Development Activity Permanent Water Quality Treatment Best Management Practices
- Chapter 5 – Permanent BMP Maintenance Guidelines
- For dredge and fill activities, see the Highland Lakes Dredge and Fill Ordinance Technical Manual
- Section II – Quarry and Mine Activity
Design Tools
- Excel worksheet to calculate water quality volume and the size of permanent water quality management features under the Highland Lakes Watershed Ordinance
- Excel worksheet to calculate stormwater credits for residential lots
Technical Manual Bulletins
- Biofiltration Water Quality Measure Biofiltration has advantages over other best management practices (BMPs). It is a stand-alone measure and has a drainage area up to 30 acres, water quality depth up to 6 feet, smaller stormwater footprint and cost, opportunity to include recreational amenities, and an enhanced appearance.
- Batch Detention Water Quality Measure
- BMP Details
- Porous Pavement
- Revegetation Options During Drought Conditions
Construction Details
- Biofiltration media section detail pdf | CAD
- Biofiltration pond detail pdf | CAD
- Cleanout detail pdf | CAD
- Pipe outfall detail pdf | CAD
- Raised outfall detail pdf | CAD
- Rock divider detail pdf | CAD
- Scour hole detail pdf | CAD
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