The San Antonio River Authority owns, maintains and/or operates assets in the San Antonio River Watershed which covers Bexar, Wilson, Karnes and Goliad counties including dams, parks, and wastewater treatment plants. The parks include the San Pedro Creek Culture Park as well as the Museum and Mission Reach segments of the River Walk. It also includes several nature based parks located throughout all four counties. If you are looking to develop adjacent to the Museum (RIO-2) or Mission Reach (RIO-5 and RIO 6) or the San Pedro Creek Culture Park (RIO-7), the City of San Antonio Unified Development Code requires a formal coordination with the River Authority as part of plats and building permits. Coordination with the River Authority might also be needed in RIO-1 (San Antonio River north of 281) and RIO-4 (West Durango Boulevard to Mission Road). Please email us or call (210) 302-3666 for more information on the items below.
If you are considering development adjacent to the River Walk or San Pedro Creek, you will be required to coordinate with the San Antonio River Authority per the City of San Antonio’s Unified Development Code 35-673.
As part of the coordination, the River Authority requests that the developers provide information on their development in the preliminary phases. For most projects, the River Authority will want a full set of plans and specifications. Earlier coordination is better.
Please email us or call (210) 302-3666 for more information.
Below is a list of typical items that the River Authority will want information on regarding your development. This is not an all-inclusive list.
If you are proposing to perform work on the Museum Reach, Mission Reach or San Pedro Creek that will impact the trail system, you will need to comply with the City of San Antonio’s Unified Development Code 35-673 (c) (8) a. iv which requires coordination with the San Antonio River Authority (River Authority). The River Authority recognizes that these trail systems are heavily used and strives to minimize public inconvenience while working with developments adjacent to Museum Reach, Mission Reach and San Pedro Creek Culture Park.
You will need to obtain a permit or license from the River Authority. Submission of a completed application and payment of associated costs does not guarantee that a permit or license will be issued. If work is completed earlier than anticipated a refund will be issued for the days that were not used for the trail closure. Please allow 10 business days for review of your application. Trail closures are granted on a first come, first serve basis and are limited to six months.
Trail Closure License Schedule and Fees
Trail Usage Permit Application
Send Permit Applications to: River Authority Developer Resources, email, 210-302-3666
Permit for Intermittent Closure– Impacted with maintenance or equipment and will have flaggers at all times to temporarily (less than 2 minutes) hold traffic or guide traffic around the equipment.
Permit for Partial Trail Closure – Minimum width 5 feet must be open. Must only impact a 20 foot long area or less.
License for Full Trail Closure – A License Agreement will be required for a full trail closure. River Authority will provide site specific license agreements once the work is defined.
Payment is currently accepted by check. Please make your check payable to the San Antonio River Authority. Payments are accepted at the River Authority Environmental Center, 201 W. Sheridan, San Antonio, TX 78204-1429. To confirm fees please email or call 210-302-3666.
The San Antonio River Authority, in conjunction with the City of San Antonio, sought inclusion of the new, voluntary LID/NCDP use pattern into the Unified Development Code (UDC).
The City of San Antonio also requested the River Authority to include amending the Conservation Subdivision use pattern in the project, again to provide greater incentives to make use of the code more attractive.
Under the amendment to Section 35-210, developers using LID/NCDP practices can qualify for two types of incentives: credit/offset-based and fee-based.
For new development, the first 1.5” of rainfall falling on the developed area during the 24-hour rain event shall be managed. For a redeveloped site, the first 1.18” of runoff in a 24-hour event shall be managed.
Table 210-1
Credit/Offset |
Multiplier |
1. Stream Buffer or Stream Restoration to Parkland Acre |
1.5 |
2. Stream Restoration to Tree Canopy |
1.25 |
3. Linear Park to Parkland Acre |
1.5 |
4. LID BMP to Tree Canopy |
1.5 |
5. LID BMP to Streetscape Tree |
1 |
6. LID BMP Landscape Elective Credit |
Up to 25 points |
7. LID BMP Drainage Area to Parkland Acre |
1.5 |
8. Density Bonus |
10% |
Percent of WQV Managed (Volume resulting from first 1.5'' in 24 hours on developed site)
|
60% |
70% |
80% |
90% |
100% |
Credit/Offset |
|
|
|
|
|
FILO Fee Discount |
|
|
|
|
|
Meets LID Performance Standard |
5% |
10% |
20% |
25% |
30% |
Meets Detention Requirements or increases Channel Storage through NCDP |
|
|
|
|
|
Permeable pavement shall not be counted as impervious cover if designed to store the 2-year, 24-hour storm event.
Click here for the San Antonio River Basin LID Technical Guidance Manual
The San Antonio River Authority maintains and operates 28 dams in Bexar County and 13 dams in Karnes County. The structures are vital flood retarding structures that are designed to detain storm water for current existing conditions. If you are looking to develop near these dams, please email us or call 210-302-3666 to discuss your development’s impact on the dam.
For more information regarding Utility development within the River Authority service area, click here.
For information regarding development near or on the River Authority property, please click here.
The San Antonio River Authority (River Authority) has partnered with the Federal Emergency Management Agency (FEMA) as part of the Letter of Map Revision Delegation Program that enables the River Authority to review proposed revisions to floodplain maps within its four county jurisdiction. In its capacity as a FEMA Delegation Program partner, the River Authority is responsible for reviewing floodplain maps for revisions throughout Bexar, Wilson, Karnes and Goliad counties (including all incorporated communities). Those revisions are known as Letter of Map Revisions (LOMR) and Conditional Letter of Map Revisions (CLOMR). The River Authority officially began receiving submittals in 2012. By serving as a FEMA’s LOMR/CLOMR delegate, the River Authority is able to provide certain benefits to communities throughout its jurisdiction, including the following:
Mail CLOMR/LOMR Submittals to:
San Antonio River Authority
Attn: Watershed Engineering Dept. LOMC Administrator
201 W. Sheridan
San Antonio, TX. 78204
OR
Deliver to our office:
San Antonio River Authority
Attn: Watershed Engineering Dept. LOMC Administrator
201 W. Sheridan
San Antonio, TX. 78204
Contact Program Administrator
All MT-2 applications for C/LOMR submissions should no longer be sent directly to FEMA. All submissions for CLOMRs and LOMRs inside the geographic area of Bexar, Wilson, Karnes, and Goliad will be processed by the San Antonio River Authority. FEMA will maintain responsibility for the processing of MT-1 applications.
San Antonio River Authority | 201 W. Sheridan San Antonio, TX. 78204 | 1(866)345-7272
FEMA Procedure Memorandum 64
http://www.fema.gov/media-library/assets/documents/34953
MT-2 Application Forms and Instructions
https://www.fema.gov/national-flood-insurance-program-flood-hazard-mapping/mt-2-application-forms-and-instructions
Flood Map-Related Fees
https://www.fema.gov/forms-documents-and-software/flood-map-related-fees
Digital Data & Model Repository (D2MR)
http://gis.sara-tx.org/D2MR/
San Antonio River Basin Regional Modeling Standards for Hydrologic and Hydraulic Modeling
Instructions for Completing Application for CLOMRs and LOMRs (PDF, 352KB, 05/13/2013)
Procedure Memorandum No 57 (PDF, 434KB, 09/22/2010)
Changes to FEMAs Appeals Process (PDF, 111KB, 09/22/2010)
New CLOMR Procedure- Endangered Species Act (PDF, 219KB, 09/22/2010)
Alluvial Fan Flooding Form (PDF, 24KB, 09/22/2010)
Coastal Structures (PDF, 87KB, 09/22/2010)
Coastal Analysis Form (PDF, 78KB, 09/22/2010)
Overview and Concurrence (PDF, 193KB, 09/22/2010)
Payment Information (PDF, 66KB, 01/11/2011)
Riverine Hydrology and Hydraulics (PDF, 94KB, 09/22/2010)
Riverine Structures (PDF, 142KB, 09/22/2010)
LOMR Letter Template (PDF, 57KB, 03/07/2013)
CLOMR Letter Template (PDF, 53KB, 03/07/2013)
Newspaper Notification Template (PDF, 53KB, 03/07/2013)