GSCA monitors several wells each year to collect data on the quality and quantity of the groundwater in the watershed. The wells monitored by GSCA are part of the Provincial Groundwater Monitoring Network (PGMN), a collaborative program involving all 36 conservation authorities in Ontario. This partnership provides consistent, long‑term data that supports informed water management across the province.

Information on well locations, along with related data, can be accessed through the PGMN website.