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San Antonio River Authority

San Antonio River Authority – MROC Stormwater Design & Retrofit

San Antonio River Authority – MROC Stormwater Design & Retrofit

  • Location: 8510-03 Mission Rd, San Antonio, TX
  • Project Completion Date: November 1, 2014
  • Project Features: 3 Cisterns, 2 Bioswales
  • N/A

Project Details:

  • Total Impervious Area (SF): 48,000
  • Total Target Volume (CF): 6,000
  • Total Treatment Percentage (% of Target from 1.5" 24-Hour Storm): 46.4%
  • Total Impervious Area to Treatment (SF): 184,500
  • Total Annual Volume Treated (CF): 88,717
  • Total Bacteria Load Removed (Colonies/yr): 1,162 billion
  • Total Sediment Load Removed (lb/yr): 240

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Alerts

Graytown Park Parking Lot Construction Notice 

June 30, 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.

Trail Closure – San Pedro Creek Culture Park

June 30, 2025

* Trail temporarily closed from 5/1/2025 until 9/1/2025.

Due to adjacent construction work, the San Pedro Creek Trail on the west side of the creek will be closed from the access
point at W. Nueva Street to Dolorosa Street until further notice. Alternate route with ADA access is on the east side of the creekSan Pedro Creek Culture Park Trail Closure

Trail Closure at Myrtle St. Dead End

June 30, 2025

The trail between Myrtle St. and the newly constructed South Bridge at the Pearl District will be closed due to construction. Alternative pathways around the work area can be seen in the map below. We apologize for the inconvenience

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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