In 2006 Pickworth Cartography was tasked by Global Remote Sensing to assist with their daily hydrographic surveys that monitored the Columbia River Channel Improvement and Maintenance Dredging project for the US Army Corps of Engineers, Portland District. Both multibeam and single beam echosounders were used to analyze the deepening of the lower 18 miles of the Columbia River.
- Dredge Cut Monitoriing
- Stuyvesant Dredge