Stormwater Conveyance
Getting water from point A to point B shouldn’t be the hard part. Jensen manufactures concrete pipe and box culvert at plants across the West. That means local inventory, fast delivery, and 50+ years of hydraulic engineering behind every spec. Conveyance is the backbone of every storm drain system, and it’s what Jensen was built on.
Problems Solved
Storm drain projects fail when pipe doesn’t show up on time, specs don’t match local DOT requirements, or the manufacturer can’t support your hydraulic calcs. You’ve dealt with out-of-region suppliers who don’t know your agency’s specs, don’t stock your sizes, and can’t deliver on your timeline. Jensen solves all three.
Fast Delivery
Reduce lead times with regional production and dependable delivery.
Fast Delivery
Reduce lead times with regional production and dependable delivery.
Compliant Specs
Engineered to meet local agency requirements and project specifications.
Calc Support
Engineered to meet local agency requirements and project specifications.
Fully Integrated
One coordinated system for conveyance, detention, infiltration, treatment, and reuse.
How Stormwater Conveyance Works
Conveyance systems collect stormwater runoff from surfaces and transport it to treatment devices, detention systems, or discharge points. The system typically includes catch basins and inlets at the surface, underground pipe or culvert for transport, and manholes for access and maintenance.
Step 1
Surface runoff
Step 2
Catch basins
Step 3
RCP / culvert
Step 4
Manholes
Step 5
Outfall
Jensen manufactures every component in the conveyance chain - pipe, culvert, catch basins, manholes, and junction structures. When conveyance ties into a StormVault detention system or treatment train, the whole system is engineered and built by one team.
Conveyance Products
Reinforced Concrete Pipe
The backbone of storm drain infrastructure. Available in diameters from 12″ to 144″, manufactured at Jensen plants for fast local delivery. RCP handles the heaviest traffic loads and longest service life of any pipe material. Jensen stocks standard sizes and produces custom runs on short notice.
Box Culvert
Precast reinforced concrete box culverts for high-volume conveyance, road crossings, and channel applications. Jensen’s 50+ year specialty – the same forms used for StormVault detention, meaning proven production and competitive pricing. Spans 3′-12′, heights 2′-12′.
Catch Basins
Standard and custom drainage structures pre-configured for Caltrans, NDOT, local DOTs, and municipal specs. Jensen can integrate treatment devices (JDS, catch basin filters) directly into inlet structures for pretreatment at the point of entry.
Manholes
Standard and custom drainage structures pre-configured for Caltrans, NDOT, local DOTs, and municipal specs. Jensen can integrate treatment devices (JDS, catch basin filters) directly into inlet structures for pretreatment at the point of entry.
Our Experience
Jensen has manufactured concrete pipe and box culvert since 1968. Three generations of infrastructure expertise – with plants in California, Nevada, Arizona, Hawaii, Missouri and the Pacific Northwest.
01
Products
RCP
Box Culvert
Catch Basins
Manholes
Junction Structures
Headwalls
02
Regions We Serve
California
Nevada
Arizona
Pacific Northwest
Hawaii
Missouri
03
Standards Supported
Caltrans
NDOT
ADOT
AASHTO
ASTM C76 / C789 / C850
How to Get Started
You have your workflow.

We fit into it, not the other way around.
01
Get Drawings Fast
Tell us your site constraints. We’ll turn around project-specific drawings in days, not weeks.
02
Request Sizing
Share your hydrology data and storage requirements. Our engineers will size a system and return a preliminary layout.
03
Engineering Review
We’ll review your design, confirm hydraulic calcs, verify agency compliance, and provide stamped submittals.
04
Installation Support
From delivery coordination to on-site technical support, we stay with your project through final inspection.
Complete Your System
Most projects need more than one solution. A detention system works best with pretreatment upstream, filtration downstream, and conveyance tying it all together. Add a pump station for reuse or lift applications. Jensen engineers and manufactures the entire system, so you get one partner, one set of drawings, and one team that knows how it all connects.
01
Conveyance In
RCP
Box Culvert
02
Pretreatment
JDS
Catch Basin
03
Detention
StormVault
04
Treatment
Filter
Biofiltration
05
Pump Station
Reuse
Lift
06
Discharge
Storm drain
Infiltrate
01
Conveyance In
RCP
Box Culvert
02
Pretreatment
JDS
Catch Basin
03
Detention
StormVault
04
Treatment
Filter
Biofiltration
05
Pump Station
Reuse
Lift
06
Discharge
Storm drain
Infiltrate
Every component above is engineered and manufactured by Jensen.
Detention
Manage Stormwater Storage
Underground vault and chamber systems for detention, retention, and infiltration. Manage peak runoff, meet storage mandates, and maximize buildable land.
Detention
Manage Stormwater Storage
Underground vault and chamber systems for detention, retention, and infiltration. Manage peak runoff, meet storage mandates, and maximize buildable land.
Treatment
Improve Water Quality
Separators, filters, and biofiltration to meet water quality permit requirements. NJDEP certified, TAPE approved, CA Water Board compliant.
Pump Stations
Optimize Water Flowrate
Precast pump stations for stormwater reuse, lift applications, and sites where gravity discharge isn’t feasible.
Engineering Support
Get specs, drawings, or application support from our engineering team.
Take the next step.
Talk with a Jensen expert to find the right solution for your project, or schedule a Lunch & Learn with our team.
Or call us at 775-352-2700