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San Antonio |
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Unified Development Code |
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Appendix H. STORM WATER DESIGN CRITERIA MANUAL |
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Chapter 13. STORAGE FACILITIES |
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Appendix 13.3. Detention Basins |
| § 13.3.1. Design types |
| Appendix 13.3.2. Design Guidelines |
| § 13.3.2.1. Location |
| § 13.3.2.2. Design Frequencies |
| § 13.3.2.3. Features |
| § 13.3.2.4. Routing Methods |
| § 13.3.2.5. Freeboard |
| § 13.3.2.6. Layouts |
| § 13.3.2.7. Overflow |
| § 13.3.2.8. Auxiliary/Emergency Spillways |
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The primary function of a detention basin is to store and gradually release storm water runoff by way of a control structure or other release mechanism. The basin can be above or below ground, existing as collection and conveyance facilities, impoundments, and underground tanks. Detention basins are the most common type of storage facility and are usually 'dry-pond' types, which release all of the detained runoff over a short, specified length of time (usually twenty-four (24) or forty-eight (48) hours). |