The effort to do needed maintenance and reinvestment on the Riverfront Trail in The Dalles is continuing, with work to raise the estimated $315,000 to fix aging and damaged portions of the trail.  North Wasco Parks and Recreation District Executive Director Scott Baker says the City of The Dalles has committed $100,000 for the work, while the Port of The Dalles and the North Wasco PUD have chipped in $50,000 each.  Baker says the effort to fundraise for the rest is underway.  Baker adds they can start work this spring, and plan to start at the western end of the trail at the Columbia Gorge Discovery Center and move eastward.  For information on how to donate, go to nwprd.org.