We provide the information and understanding needed to guide planning and decisions for the best management of the State’s water resources.
We make sure that water is allocated and used efficiently to maintain environmental values and support sustainable development into the future.
Protection and Enhancement
We protect wetlands, waterways and water supplies and restore degraded environments through land and water use planning and management.
Scope of the System
Each of our Regions has a Hydstra installation plus a main archive in Perth and several local copies of Hydstra. The 10 Regional installations are mainly used for processing of logger data, production of ratings, storage of cross sections and gaugings. The main archive in Perth is mainly used for the extraction and provision of data to clients.
In total we maintain 17 Hydstra installations plus around 6 local copies where the data is maintained on an individual PC and not in the Perth or Regional Archive. Hydstra is installed on 9 servers in the Commission.
Data Collection Sites
There are approximately 1100 loggers are in operation including 360 stream level sites, 450 rainfall sites and 65 conductivity sites
The Water & Rivers commission currently store about 6.5 to 7 Gb of continuous data and approximately 500 Mb of water quality data. This includes approximately 9 300 years of stage data, 15 000 years of rainfall data and 600 years of conductivity data.
We have a total of around 27 000 years of continuous data including 3705141 days of data (~300 Mb) currently in our Hydstra archive.
Before Hydstra all of our data was stored on our mainframe system (SWRIS). The move to Hydstra came when we changed from recording data on strip charts using A35’s to using UNIDATA data loggers. The main reason was to use Hydstra’s graphical data editor HYEDIT. Data is (still) transferred from Hydstra to SWRIS for long term storage. However we do maintain an archive of mainly stage data in Hydstra. We are currently in the process of migrating all of our continuous data, gaugings, ratings and cross sections from SWRIS to Hydstra. When this is complete Hydstra will be the main archive for all of this data.
The main benefit that we initially gained from Hydstra was the ability to view and edit data graphically. Once data is migrated from SWRIS to Hydstra mainframe storage and processing costs will be reduced dramatically. Hydstra provides convenient and efficient methods for entering, storing, extracting and analysing data. The Information and Systems Group predominantly use Hydstra for the extraction of streamflow and rainfall data for clients. Our hydrologists and engineers use Hydstra predominantly for analysis and extraction of streamflow and rainfall data.