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Apply the latest ARR updates with the new Watercom Climate Change Rainfall Modifier.

Seen the new updates to ARR? Apply the latest climate change science to your models using the new Watercom Climate Change Rainfall Modifier!  

Climate Change Rainfall Modifier

Free New Tool Released

Climate Change Rainfall Modifier

Apply the latest climate change science to your models' rainfall data, in line with the recent updates to the Australian Rainfall & Runoff (ARR) guidelines.

Exchange USB

Own a USB Licence?

Exchange it for Perpetual Licences!

Based on your existing DRAINS USB value, get one of the following offers:

up to

THREE

Standalone
Perpetual Licences

at no additional cost!

ONE

Network
Perpetual Licence

from only $1,000!^

Up to FOUR Standalone Perpetual Licences, or ONE Network Perpetual Licence!

Plus a FREE upgrade to all DRAINS features and functionality!

Valid until 31 December 2024. After this date, value of Exchange Offers will be subject to annual price increases. Terms & Conditions apply.
^When exchanging an Unlimited-Links USB.

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LEARN & SAVE

with DRAINS Training Workshops

Earn 40% credit towards a new or upgraded DRAINS licence when you attend any DRAINS In-Person Workshop.

UPCOMING

Melbourne: 22-24 Oct 2024
Sydney: 26-28 Nov 2024
Adelaide: Feb/March 2025
Perth: Feb/March 2025

Model Consultations

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DRAINS Model Consultation

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One-on-one DRAINS Modelling Support

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DRAINS, PIPES & PIPES++

We design, develop and support Australia's leading modelling and analysis software for stormwater and drainage systems.

Australian-owned and operated since 1998.

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DRAINS: Australia's leading Stormwater Drainage System design and analysis software.

Developed and supported locally, DRAINS is Australia’s most trusted and widely-accepted modelling and analysis software for stormwater and drainage systems.

Celebrating over 25 years, DRAINS allows users to design and analyse stormwater drainage systems, produce summary graphs and tables, and create pipe long-section drawings.

DRAINS also incorporates the latest Australian Rainfall and Runoff (AR&R) guidelines.

  • Draw drainage system components such as sub-catchments, pits, pipes, detention basins, channels and overflow routes.
  • Use several available hydrological models recommended by the AR&R guidelines.
  • Solve the full unsteady flow equations in pipes, channels and overflow routes.

First software to incorporate AR&R Design Procedures & BOM 2016 IFDs (January 2017)

Features

AR&R Compliant

First software to incorporate the new Australian Rainfall and Runoff (AR&R) design procedures.

Hydrology

Use IL-CL (the AR&R preferred model), Horton ILSAX, Rational & Extended Rational Method models, and a Storage Network Routing Module that includes RORB, RAFTS and WBNM.

Hydraulics

Solve the full unsteady flow equations, which is useful for analysing complex surface flooding situations where storage or backwater effects occur in overflow routes, or when splitting surface flows in multiple directions.

DRAINS Versions

We offer multiple versions of DRAINS.

DRAINS Demo, DRAINS and DRAINS Viewer all include the Australian Rainfall and Runoffs’ (AR&R) Initial Loss – Continuing Loss (IL-CL), Horton (ILSAX) and Rational & Extended Rational Method hydrological models, and are capable of analysing AR&R temporal patterns and design procedures.

The Full Unsteady Hydraulic Model, Storage Network Routing Models (RORB, RAFTS & WBNM hydrological models) and the GIS Module are also included.

DRAINS Licensing

DRAINS is available in various licences and options.

Here are some things to consider when planning to purchase a new licence.

Explore LicensingView FAQs

Number of Links

Most licences are available in 5, 20, 50 or Unlimited Links.

Subscriptions

Simple recurring payments. Select 30-Day or Annual Terms.

Perpetual Licence

Access DRAINS without a USB on registered devices.

NO LONGER AVAILABLE

USB Licence

Access DRAINS with a USB on any device of your choice.

Network

Shared access between PCs via a Subscription or Perpetual Licence.

All Features

All new licences include the full suite of current DRAINS functionality.

Included Modules

Three additional modules are included with new DRAINS licences.

Storage Network Routing Module

The Storage Network Routing Module adds the RORB, RAFTS and WBNM storage routing hydrological models, useful when modelling large urban or rural sub-catchment areas where estimating the time of concentration with time area routing might be difficult.

DRAINS RAFTS does not rely on XP Rafts and is not affected by the discontinuation of XP Rafts by Innovyze.

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GIS Module

The GIS Module is useful where you need to interface with GIS systems that support ESRI shapefiles or Mapinfo MID/MIF files. This module allows transfer of data and results between DRAINS and GIS.

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Rational + Extended Rational Method Hydrological Module

The Rational + Extended Rational Method Hydrological Module adds the ability to model the rational method procedures with ARR87, ARR2019 and AS3500.3.

The Extended Rational Method allows users to produce hydrographs to improve detention basin analysis and utilise the full unsteady hydraulic model. This is achieved by including temporal patterns as part of the analysis and including the ability to model ensembles of storms from ARR2019.

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Maintenance & Support

Request a QuoteLicensing

In-Person & Online Training

In-Person WorkshopsOnline Training

Recent News

October 1, 2024 in DRAINS, Licensing, News, Promotion

Exchange your USB for Perpetual Licences: Offer Examples

Unmissable Value Own a DRAINS USB Licence? Exchange it for Perpetual Licences! Discover your exclusive trade-in offer with our online calculator. You could receive up to $15,000 in discounts*! Here are some examples of offers received by customers - all…
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September 12, 2024 in DRAINS, Industry Updates, News, Resources

New Climate Change Tool

New Tool Released In response to recent ARR updates, Watercom has released a free tool to apply the latest climate change scenarios to rainfall data. In response to the recent updates to the Australian Rainfall & Runoff (ARR v4.2) guidelines,…
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September 12, 2024 in Industry Updates, News

Updated ARR Guidance: Climate Change Considerations

The Australian Rainfall & Runoff (ARR): A Guide to Flood Estimation guidelines have been updated to version 4.2 with improved guidance on how to consider climate change when planning for future floods. Watercom is pleased to see the release of…
Read More
August 22, 2024 in DRAINS, News

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Stay Connected 📧 Sign up for our monthly newsletter! Join 4 ,000+ water professionals to hear about: DRAINS & PIPES features and developments Training Options New Release Notifications Live Technical Webinars (coming soon!) Special Offers & Promotions
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For further information on our products, licensing options, updates, support and/or training, please get in touch.