Design Criteria for
Stormwater Drainage
If you are having a hard time determining what permanent BMP will help you with your land development design, consider a batch detention pond control system for your next project. However, you may be wondering about the design criteria for a batch detention type BMP. Here at TXRWS, we specialize in batch detention control systems and designs for residential and commercial properties with a strong focus on stormwater detention systems and implementation. We understand the importance of selecting the right BMP when it comes to minimizing environmental impact and maximizing water conservation, so let us make your onsite stormwater detention system efficient, simple, and cost effective.
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Understanding all the design criteria for stormwater drainage isn’t something that everyone can do, but they don’t have to—let the professionals at TXRWS handle that. When it comes to stormwater detention design specifics, we have you covered.
Design Criteria Specifics
+ Sizing
Water quality volume increased by 20% to accommodate reductions in the available storage volume due to deposition of solids over time
+ Configuration
longitudinal slope between 1.0 –5.0 % with a lateral slope between 1.0 –1.5%, low flow channel optional but not required in order to improve drainage, 5ft max depth, no L X W size required for pond since all runoff is detained for 12 hours
+ Automated Control System Parts
control box with solar panel and display lights, valve, actuator/motor, stem/bonnet extension (optional)
+ Hazmat capability
+ Pond side slopes
3:1 (H:V) or flatter for grass, steeper needs additional stabilization practices
+ Basin inlet
dissipate energy, reduce velocities > 3 ft/sec.
+ Outflow structure
trash rack with screen to prevent clogging, 48-hour drawdown time –Drill enough holes! :)
+ Vegetation for outside Edwards Aquifer RZ
hydro mulch, etc., drawings need to show how basin is stabilized
+ No splitter box w/ batch
same pond can be used for WQ and detention
+ Erosion protection at outfall
keep natural grade, rip rap
+ Safety
eliminate drop offs, step contours, etc…
Batch Valve Control System Programmable Logic Flow Chart
