The French translation of this page is currently under development.
| Activity | Timeline | Status |
|---|---|---|
| Complete bi-national plan for IGLD (2020) and present to the Coordinating Committee for approval | 2018 | Completed |
| Choose and adopt a W0 as the new IGLD reference zero | 2015 | Completed |
| Identify potential partners/users who can help develop and implement IGLD (2020) | 2016-2023 | Underway |
| Digitize and archive old leveling information, as required | 2016-2023 | Underway |
| Perform annual maintenance and leveling ties at permanent water level gauges | 2016-2024 | Underway |
| Perform analysis of permanent gauging requirements and prioritize new proposed gauges | Completed (CO-OPS), 2023 (CHS) | Underway |
| Adjust and publish 2015 GPS campaign survey results | 2017 | Completed |
| Complete preparation of internationally coordinated methodologies for determining heights using GNSS surveys and local leveling at tie gauges | 2017-2018 | Completed |
| Complete preparation of international outreach and communications plan, and begin implementation | 2017-2020 | Completed |
| Review historic water level data for re-evaluation of Low Water Datum (LWD) | 2017-2018 | Completed |
| Reanalyze and compare all GPS campaign surveys from 1997, 2005, 2010, 2015 to estimate preliminary rates of movement | 2017-2018 | Completed |
| Perform analysis of seasonal gauging requirements and prioritize locations | 2017-2023 | Underway |
| Continue annual installations of seasonal water level gauges with GPS and leveling ties | 2017-2023 | Underway |
| Perform 2021 GNSS campaign survey in Great Lakes – St. Lawrence River system, including entity gauges (delayed from Summer 2020 and 2021) | Summer 2022 | Delayed |
| Adopt North American geoid model for IGLD (2020) | 2025 | Delayed |
| Create crustal movement models for the Great Lakes – St. Lawrence River system using GNSS campaigns and CORS/CACS data | 2023 | Planned |
| Complete seasonal water level gauging | 2023 | Planned |
| Determine hydraulic correctors | 2024 | Planned |
| Determine new Low Water Datum on lakes and rivers with respect to IGLD (2020) | 2025 | Planned |
| Determine and publish transformations between IGLD (2020) and other datums, including IGLD (1985) | 2025 | Planned |
| Perform 2025 GNSS campaign survey to help validate velocities at permanent gauges | 2025 | Planned |
| Publish new IGLD (2020) | 2025 | Planned |
| Publish final IGLD (2020) report | 2026 | Planned |