Riverbanks have been added to the Platte River all the way from North Platte, Nebraska to the Missouri River. From North Platte, the South Platte has banks to Chatfield Dam south of Denver, and the North Platte through Wyoming and into Colorado.
There is still some mapping remaining to do; tributaries can be added, nearby roads detailed, etc. Also there is some inconsistent tagging that probably should be edited (e.g. line->water in some cases instead of area->riverbank). And some of the past mapping could not have foreseen the recent flooding that has altered islands and shorelines.
But, overall, the Platte River mapping has helped improve the map in Nebraska, Wyoming and Colorado.