Climate Data
Running individual storms with ARR data
As well as running DRAINS models with ARR storm ensembles, models can be run with selected storms from these ensembles. This can be done in two ways. The first way allows you to run trial and error calculations easily based on the median or mean ...
Rational method setup with 2016 I-F-D data
Although it is not sanctioned by ARR 2019, it is likely that some designers will want to continue working with the rational method, maintaining the methods set out in the 1987 edition of ARR. This can be done in DRAINS with 2016 ...
Rainfall-runoff model
This is a hydrological model that converts rainfall precipitat ion inputs, usually in the form of a hyetograph, into runoff or streamflow values. Such models are usually in two parts – a loss model, followed by a routing model. Rainfall-runoff models ...
Rainfall temporal patterns
(a) ARR 1987 patterns Australian Rainfall and Runoff (1987) offered sets of rainfall patterns or design storms for various parts of Australia for average recurrence intervals from 1 to 100 years and durations from 5 minutes to 72 hours. These design ...
Rainfall Data property sheet (non ARR procedures)
This window is used to enter and to display the rainfall patterns required when hydrological models that produce hydrographs are being used. It is used to input: (a) temporal patterns from Australian Rainfall and Runoff, 1987; (b) individual patterns ...
Rainfall data for Rational Method property sheet
This window is used to enter ten values that define the key average recurrence intervals (ARIs) and rainfall intensities required to define the intensity-frequency-duration relationships to be used in rational method calculations. The ARIs entered ...
ARR Temporal Rainfall Patterns
From the Data Hub associated with Australian Rainfall and Runoff, it is possible to save a .zip file containing rainfall patterns appropriate to the site of interest. This file contains two comma separated variable (.csv) files. The one named ...
Obtaining 2016 I-F-D Data
The latest rainfall intensities and depths to be used in design and analysis procedures are obtained after completing the previous steps from the ARR Data Hub. If you want to obtain the 2016 IFDs separately to the ARR Data Hub click here. This ...
Inputting ARR rainfall data
DRAINS requires rainfall data, including depth or intensity, temporal patterns, and pre-burst rainfall depth or percentage. This section describes the process of importing rainfall data from the Bureau of Meteorology (BOM) website and the ARR Data ...
IFD Data property sheet
This window is used to enter nine values that must be read from charts in Volume 2 of Australian Rainfall and Runoff (1987), to define rainfall intensities for the purpose of establishing standard rainfall burst patterns to be used in the DRAINS ...
Customise storms property sheet
When called from a Sub-catchment property sheet, this window allows you to vary the rainfalls that apply to that particular sub-catchment. It has features that supplement the constant rainfall multiplier provided in DRAINS. For minor or major storms, ...
Climate change rainfall multiplier
In the Project Options property sheet, DRAINS allows users to apply a multiplier to all design rainfalls. In Book 1 of ARR 2019, climate change issues are covered in Chapters 2, 4 and 6. Australia is divided into eleven ‘clusters’ that are shown in ...
ARR Design and Analysis Implementation
Analysis procedures using rainfall-runoff models are discussed briefly in Section 5.9 of Chapter 5 of Book 2 of ARR 2019. Urban stormwater drainage is not specifically considered, and an example provided in Section 5.9.10 relates to a rural catchment ...
ARR87 rainfall pattern dialog box
This window is used to enter rainfall storm burst patterns taken from the manual Australian Rainfall and Runoff (1987). You need to enter: the zone of Australia, as shown in Figure 3.2 of Australian Rainfall and Runoff (1987), the duration of the ...
ARR Data Hub
Before constructing a DRAINS model, users will need to obtain data for a location from the ARR Data Hub and the BOM website, starting with the Data Hub (data.arr-software.org). After obtaining the necessary data it can then be inputted into DRAINS ...
Adding multiple design storms from 1987 Bureau of Meteorology data
In addition to adding single design storms, DRAINS can define multiple storms of various frequencies and durations from 1987 and 2019 data sources. In almost all instances, the 2019 data is the most appropriate, but it may still be necessary to run ...