Surface Runoff System
Rainwater Is a Resource, Unless You Let It Go to Waste.
Unmanaged surface runoff leads to erosion, flooding, and water loss. Standard systems don’t adapt to your landscape or rainfall pattern.
What We Do Differently
- Study gradient, flow path, and runoff volume
- Design recharge pits, filters, and drains based on soil and topography
- Integrate sensors for silt and flow monitoring
- Use low-maintenance, clog-resistant designs
- Customize for parking lots, rooftops, and paved surfaces
What You Get with Inovar
Runoff collection and reuse
Stormwater control and erosion prevention
Treated water for flushing, gardening, or recharge
Compliance with city water mandates
Compact, durable system with low OpEx
Best suited for
Industrial campuses
Public infrastructure (roads, stadiums)
Rooftop and surface runoff management
Housing societies and smart buildings
After Installation, We Stay Involved
Periodic silt removal scheduling
Sensor health monitoring
Recharge performance reviews
Optional AMC for inspection and tuning
Since 2019, Inovar has been leading the way in Surface Runoff System
- We design with data, not assumptions
- We engineer for long-term performance, not just installation.
- We don’t cut corners to stay cheap.
- We prioritize total cost of ownership (TCO), not just CapEx.
- We care what happens after handover.
Frequently Asked Questions
What is surface runoff?
What is a Surface Runoff Management System?
It is an integrated approach to manage stormwater sustainably. Instead of just “getting rid of it,” we focus
on slowing it down, cleaning it up, soaking it in, and storing it for reuse. This combines traditional drainage with modern Sustainable Drainage Systems (SuDS) or Low Impact Development (LID) techniques.
Why is managing surface runoff critical?
Unmanaged surface runoff leads to significant problems:
• Urban Flooding: Overwhelms drainage networks, causing property damage and disruption.
• Water Pollution: Washes pollutants (oils, heavy metals, pesticides, litter) from streets into rivers and lakes.
• Soil Erosion: Carries away topsoil, degrading land and silting up water bodies.
• Groundwater Depletion: Prevents rainwater from recharging aquifers, lowering the water table.
What services does Inovar offer for runoff management?
We provide end-to-end solutions:
• Feasibility Study & Hydrological Modelling: Predicting runoff volumes and peak flows for your specific site.
• Design of Integrated Drainage Systems: Combining conventional and sustainable methods.
• Sustainable Drainage Systems (SuDS) Design:
• Permeable Pavements
• Bio-waste & Vegetated Swales
• Rainwater Harvesting Systems
• Detention & Retention Ponds
• Green Roofs & Rain Gardens
• Turnkey Implementation: From concept to completion.
Can we harvest and reuse rainwater from surface runoff?
Absolutely. This is a core part of our strategy. We design systems to capture runoff from large catchment areas (like parking lots and rooftops), treat it through simple filtration (like Sand Filters or Vortex Separators), and store it in tanks or ponds for non-potable uses like irrigation, industrial cooling, or toilet flushing.
How do you determine the size and capacity of a runoff system?
Our design is based on:
• Catchment Area: The total area contributing runoff (rooftops, paved areas, lawns).
• Rainfall Intensity Data: Historical and projected rainfall patterns for the region, often for specific storm return periods (e.g., a 1-in-10-year storm).
• Soil Type & Land Use: To calculate the “runoff coefficient” – how much rain becomes runoff.
• We use advanced hydrological models to simulate these factors and size the system accurately
What are the key benefits of a well-designed runoff system?
• Flood Risk Mitigation: Protects your assets and infrastructure.
• Regulatory Compliance: Meets local stormwater discharge and environmental regulations.
• Water Conservation: Provides a free source of water for non-potable uses.
• Improved Water Quality: Protects the local environment.
• Enhanced Aesthetics & Amenity: Creates green, attractive spaces.
• Increased Property Value.
What is the Return on Investment (ROI)?
ROI is realized through:
• Avoided Costs: Prevention of flood damage and associated downtime.
• Direct Savings: Reduced water bills through rainwater harvesting.
• Risk Reduction: Avoidance of non-compliance penalties.
• Intangible Benefits: Improved public image and environmental stewardship.
How do you treat polluted runoff before discharge?
We use a “treatment train” approach with multiple barriers:
1. Gross Pollutant Trap (GPT): Captures litter and debris.
2. Sedimentation Basin/Tank: Allows heavy solids to settle.
3. Filtration through a Bioswale or Sand Filter: Removes finer particles and pollutants.
4. Bio-Retention (Rain Gardens): Plants and soil microbes break down oils and organic contaminants.
Do you offer maintenance for these systems?
Yes. Like any infrastructure, sustainable drainage systems require periodic maintenance to function as designed. We offer Operation & Maintenance (O&M) contracts that include inspection, desilting of ponds and swales, cleaning of filters, and landscape maintenance.