Who manages the ground beneath you, and what do we actually know about how it is cared for?

Where Substriva began

Substriva began with a question about a managed area of public land: what land-management activity, if any, was documented there, when did it occur, and which organisation held the relevant record? The condition of the ground could raise a question, but it could not answer one.

Establishing responsibility meant working out where reserve land ended, where the transport corridor began, who managed each part, and where the relevant records would actually sit. That difficulty became the starting point for Substriva: make place, responsibility, source and treatment history easier to read together, without turning an observation or a missing record into a conclusion.

Gardiners Creek came later as a reference corridor. Boroondara’s documented no-glyphosate trial along its section of Gardiners Creek, running from December 2022 to April 2025, showed what a time-bounded public record can look like when a land-management program is actually documented. It also made the structural problem clearer: a continuous creek corridor is not a single management boundary. Responsibility can move between councils, state agencies, waterway managers, committees of management and contractors, with different organisations holding different parts of the record.

A council list is therefore not a map of responsibility. One organisation may manage the reserve, another the adjoining transport land, another the waterway, and another may carry out works under contract. Substriva’s Victorian workbench is built around that reality: land, manager, source, date and scope, rather than assuming a council boundary tells the whole story.

That is the thread Substriva has kept: observations remain observations, documented records remain documented records, and anything not established by the available evidence stays explicitly unknown.