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City of San Marcos(3 more)
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| Field | Local City of San Marcos City of San Marcos Development Services |
|---|---|
| Permit | |
| Permit / Authorization | Grading / Drainage Permit |
| Submit To | City of San Marcos Development Services |
| Lead Time | Plan review typically 2–4 weeks |
| Application Method | Submit via City of San Marcos Development Services at 630 E. Hopkins St., San Marcos, TX 78666 or online portal at sanmarcostx.gov |
| Fee | Contact agency for current fee schedule |
| Water Quality | |
| Impervious Cover Limit | Portions of San Marcos are within the Edwards Aquifer Recharge Zone or Contributing Zone — EAA permit required; impervious cover caps (15% recharge zone / up to 65% contributing zone with controls) apply; downtown and older areas over recharge zone face development constraints |
| On-Site Treatment Required | No |
| Detention Required | Yes — Detention required to limit post-development peak flows to pre-development levels for 2-, 5-, 10-, 25-, and 100-year storms per City of San Marcos and Hays County Drainage Criteria; San Marcos River and Blanco River flash flood risk requires conservative design |
| Turbidity / Discharge Standard | No numeric NTU limit; discharges must comply with TCEQ TXR150000 and not degrade San Marcos River, Blanco River, or Barton Springs Pool water quality |
| SWPPP | |
| SWPPP / Local Plan Required | Yes — SWPPP per TCEQ TXR150000; drainage report required for local permit |
| PE Stamp Required | Yes |
| Inspections | |
| Inspection Requirements | City of San Marcos Development Services inspects grading permits at rough grading and final stabilization. Edwards Aquifer protection sites require active BMP maintenance. |
| Inspector Qualification | No city-specific certification required beyond TCEQ SWPPP requirements |
| Design & Zones | |
| Local Design Manual | City of San Marcos Drainage Criteria / Hays County Drainage Design Standards |
| Special Overlay Zones | Edwards Aquifer Recharge Zone — San Marcos Springs, San Marcos River (Federally Protected Habitat), Blanco River Floodplain, Texas State University Campus Zone |