The contribution to Portland for which he is most remembered today is the platting of his land claim in Northwest Portland between Northwest 23rd Avenue and the Willamette River .
Northwest Portland stretched from Burnside Avenue north for 1 mile ( 1.6 km ) .
The contribution to Portland for which he is most remembered today is the platting of his land claim in Northwest Portland , which stretched from Burnside Avenue north for 1 mile ( 1.6 km ) , between Northwest 23rd Avenue and the Willamette River .