H. 



Topography 



Roads in open country 



Roads on 

 small scale charts 



1 Roads (Rds.) 



2 Track, footpath, or trail 



M. & N, W. Ry 



Same grade 



n 



Ry. above 



Ry. below 



3 Railway (single or double track) 

 Railway (Ry.) Railroad (R.R.) 



Overhead cable 

 CI. 140 II. 



4 Overhead cable (Ovhd. Cab.) 



5 Power transmission line 



-^ 



8 River (R.) or Stream (St.) 



-^ 



9 Intermittent stream 



10 Lake (L.) 



12 Marsh (See No. A-8) 



Canal ^ ^Lock 



Ditch s Sluice 



1 3 Canal or ditch 



J ICI.30 1 



1 ^c 



14 Bridge (fixed) 



T^o4 



1 5 Drawbridge, in general 



16 Swing bridge, that can be opened 



1 7 Pontoon bridge, that can be opened 



I \ci.down20ft 



) ^ [Cl. up 67 (t. 



=^=* 



1 ^ ^ r 



(17a) Lift bridge 



^ 4= 



T n 



(b) Bascule bridge, that can be opened 



19 Fe 



Ferry]_ j 



' iFerry 



21 Da 



irTTTTTTTTTTTITl 



(25) Levee 



'''!,',\\-^"\ 



(26) Lava flov 



(27) Log boom 



subm.pile pile stumps snags 



(28) Submerged piling, piling, 

 stumps, and snags 



(29) Tunnel (railroad or road) 



\ Lviaduc 



^ t 



(30) Viaduct 



Figure 189. — Symbols and abbreviations for nautical charts (part V). 



