InSite Resources

InSite Quick Start

To get started with InSite simply register then go to My Projects in the Account menu and click on the 'New Project' button.
Complete the three pages of the tool and submit it to be able to generate reports.

You can save a draft, return and edit or update a completed project at any time, but make sure that you save your changes using the save button each time you edit your projects.

To generate reports you can go to the Reporting tab under the Account menu. This tool is free to use if you are submitting to a subscribing council.

For information on Professional training Click Here
For information on Council training Click Here

WSUD in planning and building approvals training video (Thank you to Frankston Council and the Melbourne Water Living Rivers program).
This is our guide on how to submit a stormwater plan, including a quick tutorial on using InSite water and case studies

Additional Resources

Online Training Portal
For a full 2 hour online training course including a briefing on the 2018 Victorian Planning Provision updates, please use this link to be directed to our online training platform.

For background reading on Integrated Urban Water Management, please see the following links:
Australian Rainfall and Runoff 2019

Best Practice Sustainable Design Guides:
Manningham Sustainable Urban Drainage Guide
IMAP 4.0 Stormwater Management.pdf
IMAP 3.0 Water Efficiency.pdf

WSUD Engineering Procedures Stormwater Stormwater eBook by Melbourne Water
Available on the Kindle Store

Other online resources
Melbourne Water Stormwater site
Clearwater – training and events on integrated water management

Glossary of common stormwater terms




Annual exceedance probability is defined as: The probability that a given rainfall total accumulated over a given duration will be exceeded in any one year. With ARI expressed in years, the relationship is: AEP = 1 – exp (-1/ARI). Further discussion of stormwater terminology can be found in Book 1; Chapter 2; Section 2.2 Terminology of ARR 2016


Average recurrence interval is defined as: The average, or expected, value of the periods between exceedances of a given rainfall total accumulated over a given duration.

ARR 2016

Australian Rainfall and Runoff (Engineers Australia 2016, published at is a national guideline document, data and software suite that is the default national standard for the estimation of design flood characteristics in Australia.

Deemed to satisfy

A simplified checklist approach to achieving compliance targets (as opposed to a custom designed or software modelled approach).


Environmentally sustainable development


Exceedances per year The number of times an event is likely to occur or be exceeded within any given year.

Infill growth

Growth occurring through densification of existing developed areas.

InSite Water

An integrated water cycle management design toolkit focused on Council approvals for infill growth


Intensity-frequency-duration  Data generated for engineers and hydrologists to understand design rainfall events The 2016 Intensity–Frequency–Duration (IFD) design rainfalls are provided for use in conjunction with the 2016 edition of Australian Rainfall and Runoff (ARR 2016)

Integrated water management

A multi-disciplinary and multi-objective approach for the sustainable use of available resources with the objectives of environmental protection, and minimising water demands, wastewater discharges and stormwater runoff.


Saturated Hydraulic Conductivity. If no data is available for a site, field hydraulic conductivity tests must be undertaken to confirm assumptions of soil hydraulic conductivity adopted during the concept design stage. Field soil hydraulic conductivity (Kh) can be determined using the falling head auger hole test method.


On site detention A common practice of slowing down stormwater release rates into stormwater drains by using a detention tank with a known outflow rate.


Rainfall collected from the roofs of buildings.

Rainwater tank

A water tank that is used to collect and store rainwater runoff, typically from rooftops via rain gutters.

Rational Method

A common mathematical method used by engineers to design stormwater drainage systems.

Soil site classification

Soils site classification is according to Australian Standard AS 2870/2011 - Residential slabs and footings

Site classifications and movement are based on soil reactivity

Class A (0-10mm)    Stable, non-reactive. Most sand and rock sites. Little or no ground movement likely as a result of moisture changes.

Class S (10-20mm)  Slightly reactive clay sites. May experience slight ground movement as a result of moisture changes.

Class M / M-D  (20-40mm) Moderately reactive clay or silt sites. May experience moderate ground movement as a result of soil conditions and moisture changes.

Class H1 / H1-D (40-60mm) Highly reactive clay sites. May experience a high amount of ground movement as a result of soil conditions and moisture changes.

Class H2 / H2-D (60-75mm)    Highly reactive clay sites. May experience very high ground movement as a result of soil conditions and moisture changes.

Class E / E-D (75mm+) Extremely reactive sites. May experience extreme amounts of ground movement as a result of soil conditions and moisture changes.

Class P (this is approximately 70% of building sites in Australia) Problem sites. Sites may be classified as 'Class P' as a result of mine subsidence, landslip, collapse activity or coastal erosion (e.g. dunes), soft soils with a lack of suitable bearing, cut and/or filled sites, or creep areas.  Ground movement as a result of moisture changes may be very severe.  If you are building on a Class P site you will need to consult a structural engineer.

The 'D' inclusion (i.e M-D, H1-D, H2-D or E-D) The 'D' in these classifications refers to 'deep' movements in soil due to deep variances in moisture. These classifications are mostly found in dry areas.


Rainfall that runs off all urban surfaces such as roofs, pavements, car parks, roads, gardens and vegetated open space.


tc – “time of concentration” in minutes, reserved for SITE-ONLY (runoff) travel time when using the Rational Method.


Tc – “critical storm duration” in minutes, a CATCHMENT-WIDE PROPERTY.

When designing flood control devices such as OSD, designers must consider the size of the catchment which the device is designed for. 

Note: for small developments, this is often equated with protecting local Council pipes and assets, usually within about 3-5km of the site equating to a Tc of 30 minutes.


Total nitrogen The sum of the nitrogen present in all nitrogen-containing components in a given water sample at certain temperature over a specific time period. Best practice is a 45% reduction target of typical urban annual load.


Total phosphorus The sum of the phosphorus present in all phosphorus-containing components in a given water sample at certain temperature over a specific time period. Best practice is a 45% reduction target of typical urban annual load.


Total suspended solids A water quality measurement of the mass of fine inorganic particles suspended in a given water sample at a certain temperature over a specific time period. Best practice is an 80% reduction target of typical urban annual load.


Australian Water Efficiency Labelling Standards scheme.


Water sensitive urban design Design principles that aim to reduce the impact of interactions between the urban built form and the urban water cycle including surface water, potable water, groundwater, urban and roof runoff, wastewater and stormwater.