DRAINAGE DESIGN CASE STUDY:
L8 Dupuis Culvert Replacement | Optimized Drainage Solution
The installation of 26 JET Filter 4-inch open-end stainless steel maintainable drains in the L8 Dupuis Culvert Replacement project revitalized canal infrastructure, optimized drainage, and significantly prolonged the culvert’s lifespan.

Culvert Drainage Systems Dilemma
The L-8 Canal in Canal Point, Florida, faced critical drainage failures due to aging metal culverts, necessitating urgent infrastructure replacement. This South Florida Water Management Project (SFWMD) “L8 Dupuis Culvert Replacement” project addresses the deterioration of the G-261, G-262, and G-263 structures, key components of the regional water management system.
Over time, corrosion and decay compromised the culverts, leading to water flow inefficiencies, erosion risks, and infrastructure instability. CES Consultants, in collaboration with Ebsary Foundation, led the replacement process, ensuring the integration of long-term drainage solutions to preserve Florida’s critical water infrastructure.
Solution
To enhance drainage efficiency, the project involved:
✅ Installing 26 JET Filter 4-inch open-end stainless steel maintainable drains.
✅ Integrating Mirafi® Filter-Weave FW 300 geotextile media for superior filtration.
✅ Positioning drainage systems at both ends of the culvert’s concrete headwalls.
Corrugated metal culverts present unique challenges in drainage integration due to difficulties in achieving a secure seal between the drainage system and metal structures. The JET Filter’s maintainable drainage solution was selected for its ease of installation, hydrostatic pressure relief, and ability to prevent soil migration without compromising the culvert’s integrity.
By employing sustainable infrastructure practices, the South Florida Water Management District ensured long-term durability while effectively managing taxpayer funds. This project serves as a model for proactive water infrastructure stewardship.
At a Glance
Project Location: Canal Point, FL
Owner: South Florida Water Management District
Engineer: CES Consultants
Contractor: Ebsary Foundation
Installed Components:
- 26 units of 4″ diameter open-end ASTM 316/316L stainless steel housing
Mirafi® Filter-Weave FW 300 geotextile filter media
Key Benefits:
✅ Enhanced culvert drainage performance
✅ Prevented erosion and hydrostatic pressure buildup
✅ Maintainable design for long-term efficiency
Project Links
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