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San Antonio River Authority

Leadership

Executive Directors

Derek Boese

Derek Boese, JD, PMP

General Manager

Rick Trefzer

Rick Trefzer

Deputy General Manager

Steven Metzler

Steve Metzler

Director, Water Resources

Luis Garcia

Luis Garcia

General Counsel

Sandy Weny

Sandy West, SHRM-SPC

Director, Human Resources

Shawna Arroyo

Director, Information Technology

Kristen Hansen

Deputy Director, Parks & Recreation

Brian S. Mast, JD

Deputy Director, Government Affairs

Department Managers

Erin Cavazos

Erin Cavazos

Manager, Engineering

Shaun Donovan

Manager, Environmental Science

Naomi Oster

Naomi Oster

Manager, Facilities

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Paul Garza

Controller

Nicole Marshall

Nicole Marshall

Manager, Public Affairs

Amy Zola

Manager, Project Management Office

Katie Overstreet

Katherine Overstreet

Manager, Utilities

Tommy Mitchell

Manager, Watershed & Park Operations

Alerts

Graytown Park Parking Lot Construction Notice 

August 5, 2025
Construction Timeline: April – October 2025 (estimated) Improvements are coming to Graytown Park! Parking lot construction will begin in April, and we appreciate your patience as we work to enhance the park for all visitors. Temporary Closures & Impacts:
  • Upper parking area, pavilion, and restrooms will be CLOSED during construction. Temporary restroom facilities will be provided.
  • Park and river access will be CLOSED Monday–Friday from 8 AM – 5 PM (no access during these hours).
We encourage visitors to plan accordingly and check back for updates as the project progresses. Thank you for your support! Stay Updated: Follow us on social media for the latest updates.

SASPAMCO Paddling Trail

June 30, 2025
The SASPAMCO paddling trail is open from River Crossing Park to Helton Nature Park. *Please Note: Paddling Trail from Helton Nature Park to HWY 97 is still closed due to blockages. 

SASPAMCO Paddling Trail Temporarily Closed

June 30, 2025
Staff have removed two large log jams just downstream of Helton Nature Park, keeping the southern portion of the SASPAMCO Paddling Trail temporarily closed. Staff are working to contact adjacent landowners to support a land-based removal solution.

Goliad Paddling Trail Alert

June 30, 2025
NOTICE: HWY 59 Landing Site Closed Due to TxDOT construction on the HWY 59 Bridge, the HWY 59 landing site is closed until further notice. However, the Goliad Paddling Trail remains open, and paddlers can still access the river at the Riverdale, Ferry Street, and Goliad State Park landings. Please plan accordingly and check back for updates.
Current Conditions

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