87B
Portage Lake Municipal Seaplane Base
IFR
37° 51′ 34″ N 76° 53′ 38″ E
/
135 ft
(41 m MSL)
navigation
212°
38° 4′ 8″ N 77° 19′ 5″ E
/
220 ft
(67 m MSL)
navigation
213°
37° 23′ 17″ N 75° 53′ 33″ E
/
36 ft
(11 m MSL)
navigation
207°
navigation
210°
38° 8′ 32″ N 77° 31′ 39″ E
/
277 ft
(84 m MSL)
navigation
214°
navigation
216°
navigation
210°
navigation
216°
navigation
214°
navigation
210°
navigation
207°
navigation
212°
navigation
209°
navigation
208°
navigation
215°
navigation
216°
navigation
209°
navigation
207°
navigation
207°
navigation
209°
navigation
216°