Carderock to Riley’s lock

• 1
  
  Anglers Footbridge
  Mile 12.2
• 2
  
  Lock 15
  Mile 13.6
• 3
  
  Stop Gate
  Discovery at Mile 13.8
• 4
  
  Lock 17
  Mile 14.1
• 5
  
  Trailhead – Olmsted Island Trail
  Trailhead at Mile 14.15
• 6
  
  Great Falls Overlook
  Mile 14.4
• 7
  
  Lock 21 (Swains Lock)
  Discovery at Mile 16.7
• 8
  
  Montgomery County Pumping Station
  Mile 17.5
• 9
  
  Watkins Island
  Mile 18.5
• 10
  
  Lock 23 (Violettes Lock) & Dam No. 2
  Mile 22.1
• 11
  
  Lock 24 “Rileys”/Seneca Parking
  Parking Lot at Mile 22.8
• 12
  
  Lock 24 “Rileys” & Seneca Aqueduct
  Discovery at Mile 22.8
• 13
  
  Washington Aqueduct
  Mile 14.4