Up to date and accurate information is essential for the planning processes involved in land and water management. Environment Canterbury has brought together a wide range of information on Te Waihora/Lake Ellesmere and its catchment on one page of their website –  the page was recently updated.

Reports and technical memos, many of them quite recent (2012), cover a wide of topics including groundwater allocation, minimum flows, ecology of the lake and tributaries and nutrient discharges.