With the recent update of the New Braunfels Drainage Criteria Manual (DCM), as of January 1st, 2017, developments within the City of New Braunfels’ jurisdiction that meet the following criteria will be required to meet the updated code and provide water quality measures:
- The development plans increase impervious cover by 5,000 square feet or are within FEMA designated Special Flood Hazard Area (Called Type 3 Developments); and,
- The total impervious cover for the development exceeds 30% as a result of the development.
Permanent water quality best management practices (BMPs) will need to be designed to treat the water quality volume (WQV) of the first one-half inch (1/2”) of runoff from all new impervious surfaces added to a development. The City of New Braunfels also implemented the Low Impact Development (LID) Manual to serve as a guideline for developers on the several BMP options that are available. The current DCM and LID Manual for the City of New Braunfels can be found here.
This implementation of permanent water quality measures will be required for projects started after January 1, 2017. Projects with approved master plans or final plats dated prior to January 1, 2017 will be grandfathered in to the City’s old requirements. However, it is important to note that if a master plan will require a major revision, the development will need to comply with the most current drainage criteria from the City’s DCM and water quality features may be needed if the project meets the criteria above.
This water quality requirement will allow for continued growth and new development in the City of New Braunfels while preserving the City’s important water resources and attractions.