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The ACRU model has its hydrological origins in a distributed catchment evapotranspiration based study carried out in the Natal Drakensberg in the early 1970s (Schulze, 1975). The acronym ACRU is derived from the Agricultural Catchments Research Unit within the erstwhile Department of Agricultural Engineering of the University of Natal in Pietermaritzburg, although it has now become the model’s generic name without reference to the former unit.
The agrohydrological component of ACRU first came to the fore during research on an agrohydrological and agroclimatological atlas for Natal (Schulze, 1983). Since then the model has developed, through co-operation with many colleagues and graduate students, and through generous funding mainly from the Water Research Commission (WRC), to its present status.

Currently, ACRU4 is in use. ACRU4 was developed primarily as a teaching tool. It is made up of components that can be added/copied and pasted within a tree structure. It is aimed at small configurations consisting of a few sub-catchments but is very flexible regarding the components that can be added and how they linked to each other

ACRU Downloads

File Type Size Uploaded on Download
RegSettingsSA (Run to set the required regional settings) EXE 13.00 KB 04 Feb, 2019 Download
ACRU4_install_64Bit (ACRU4 Installer to run with 64Bit Java runtime) ZIP 76.16 MB 01 Aug, 2016 Download
jre-8u5-windows-x64 (64Bit Java runtime) EXE 32.55 MB 16 May, 2016 Download
Regional Settings for Windows 8 – Required To Run ACRU4 PNG 57.74 KB 02 Sep, 2015 Download
ACRU4_64bit_folder (Folder only version – no installer) ZIP 17.36 MB 17 Aug, 2015 Download
ACRUuserManual ZIP 3.19 MB 02 Jul, 2015 Download
ACRUtheoryManual ZIP 17.67 MB 02 Jul, 2015 Download
ACRU4 (ACRU4 Installer to run with 32Bit Java runtime) ZIP 32.13 MB 03 Mar, 2014 Download

Please note, all downloads are stored on Dropbox for website purposes. Once on the Dropbox page please click on “open” and “download”.

CWRR Software Downloads