SAGIS, SIMCAT, layer files and export coefficient databases are available with SAGIS project reports.
There are two requirements to run SAGIS. First, you must buy a copy of an UKWIR SAGIS report, usually the most recent and secondly, you must hold a licence from WHS for LowFlows Enterprise for the geographical region that you are interested in. No other licences are needed.
The system we use to ensure that we always provide the latest version of the SAGIS-SIMCAT model is that the Environment Agency acts as the custodian of all the English and Welsh SAGIS models and databases. As long as you have bought a SAGIS report and hold the relevant license from WHS, UKWIR will provide contact details for the Environment Agency to provide you with a link to download the executables.