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Stormwater management concept for Australian pump station design

GRAF Australia

GRAF | LIFT guide

Stormwater pump station design

Size wet-well storage, pumps and controls around basement, yard and civil drainage inflow.

Request a project quoteCall 1300 131 971

In short

Stormwater pump station design starts with catchment inflow, available storage and the head to the discharge point. GRAF | LIFT Stormwater packages a selected wet well with pumps, valves, level controls and a control panel around that duty. GRAF | LIFT, PRESS, REUSE and CARE are being rolled out Australia-wide excluding Victoria. Project delivery, commissioning and field attendance are confirmed against location and scope.

How it works

Stormwater enters the wet well, pumps lift against static and friction head, then discharge to the receiving system.
Commercial pump station flowSite inflow enters a wet well for storage, pumps and controls lift the fluid, then discharge into a rising main or receiving system.InflowStorm / sewageWet wellUsable + emergencystorage volumePumps + panelLevel controlValves + alarmsOutRisingGRAF | LIFT packages the wet well, pumps, pipework, valves and controls

What to do next

  1. 01

    Define inflow and storage

    Peak inflow, usable volume and emergency storage before high-level alarm.

  2. 02

    Build the head stack

    Static lift plus rising-main friction and fitting losses set the duty point.

  3. 03

    Package pumps and controls

    Select GRAF | LIFT Stormwater with wet well, valves, level control and panel pathway.

Typical stormwater pumping sites

Basement drainage, commercial car parks, loading docks, warehouses, industrial yards, commercial developments and civil drainage where gravity outlets are not available.

Separate stormwater duty from sewage or trade-waste packages. Solids, oils and authority rules change pump and chamber selection.

GRAF wet well used in commercial stormwater pump stations
Wet wells are selected from the Pump Stations catalogue where suitable.

Specification focus for stormwater stations

Design inflow or required pumping rate, static head, rising-main friction losses, pipework and valves, storage and emergency volume, pump starts, electrical supply, level control, alarm requirements, site access, traffic loading, groundwater and installation conditions.

Optional scope can include guide-rail arrangements, valve chambers, BMS connection, telemetry, flow monitoring and generator-ready controls when specified.

GRAF underground systems supporting Australian stormwater pumping
Underground chambers support constrained commercial footprints.

Compare options

Keep stormwater packages focused on drainage duty, not sewer solids handling.

TopicDesign focusCommon miss
InflowPeak rate into the wet wellSizing only on average rainfall
StorageUsable + emergency volumeNo freeboard before high-level alarm
HeadStatic + friction + fittingsIgnoring rising-main losses
ControlsLevel, alarms, startsPanel treated as an afterthought

Specify these products

Frequently asked questions

What drives stormwater pump station design?+
Design inflow or required pumping rate, static head, rising-main friction, storage and emergency volume, pump starts, electrical supply, level control, alarms, site access, traffic loading and groundwater conditions.
When is a stormwater pump station needed?+
When gravity discharge is not available for basements, car parks, loading docks, warehouses, industrial yards, commercial developments or civil drainage that must be pumped.
What is included in a GRAF | LIFT stormwater package?+
Scope is project dependent and typically includes a GRAF wet well or approved chamber, stormwater pumps, discharge arrangement, isolation and non-return valves, level controls, control panel, high-level alarm and a commissioning pathway.
Are published flow or kW limits available?+
Final pump selection is project selected around the hydraulic duty. Do not rely on generic published envelopes. Share drawings and duty notes for sizing.
Is stormwater pump station supply available in Victoria?+
GRAF | LIFT commercial packages are rolling out Australia-wide excluding Victoria. Confirm delivery and field attendance against project location and scope.

Need a stormwater pump station sized?

Upload drawings and inflow notes. Call 1300 131 971 or use the quote form.

Request a quote