INDEX. 



Abutment for fixed dams, 205 

 Acquisition of land for public works, 135 

 Administration of navigation works, 5 

 Advertisement for U. S. specifications, 294 

 A-frame dam, 254 



on Ohio River, 268 

 Alignment of lock gates, 189 



fixed dams, 199 



Allegheny River locks and dams, 273 

 Alteration of channel, 342 

 American rivers and canals, 3 

 American wicket dams, 232 

 Anchor-bars for lock gates, 187 

 Anchoring vessels, 344 

 Ancient canals, 2 

 Angle of miter-sills of locks, 155 

 Applicability of regularization, 52 

 Areas of discharge through lock culverts, 198 

 Arkansas River, sediment carried by, 37 

 Arrangement of lock and dam in designing, 136 

 Artificial reservoirs, storage, 105 

 Assembling lock gates, 182 



Balanced valves for locks, 196 



Bank-heads, 74 



Bank protection, 67 



Banquettes of levees, 88 



Barren River locks and dams, 279 



Bars in rivers, 13 



Bar, tripping for wicket dams, 230 



Basins in river valleys, 9' 



Battered face lock walls, 157 



Bazin's formula, 29 



Beams, size of, for lock gates, 182 



Beams, spacing for lock gates, 181 



Bear-trap calculations, 263 



curves, 266 



dams, 261 



description, 262 



in Ohio River, 268 



Lang type, 263 



old type, 263 



Parker type, 262 



remarks on, 266 

 Beds of rivers, 8 

 Belgian movable dams, 221 

 Belgrand's opinion on levees, 97 

 Bermuda grass for protecting levees, 88 

 Bevcr storage dam, no 

 Big Sandy needle dam, 219, 274 



Black, Capt. W. M., author "U. S. Public Works," 146 

 Black Warrior River locks and dams, 275 

 Bohemian movable dams, 269 

 Bonnets, .or lock gates, 188 



Borrel M., applied gates for removal of sand, 42 

 Bould, August, inventor gate dam, 241 

 Branner, S. C., data on sediment, 37 

 Brazos River, mouth of, 124 

 Bridge dams, 247 

 Bridges, construction of, 342 



Bridges, obstructing navigation, 346 

 Broken stone for concrete, 165 

 Buckshot for levees, 81 

 Butterfly valves, 196 



Calculations for A-frame dam, 257 



bear-trap, Lang, 265 

 old, 263 

 Parker, 264 



foundation movable dams, 212 

 length of pass and weir, 213 

 lock gates, 175-181 

 walls, 147154 

 needle dams, 222, 226 

 trestles for curtains, 245 

 wicket dams, 232 

 Camere curtain dam, 244 

 Canalization, 132 



acquisition of land, 135 

 arrangement of lock and dam, 136 

 coffer-dams, 141 

 investigating site, 134 

 foundations, 140 

 height of walls for locks, 139 

 lift for locks, 138 

 locations of works, 132 

 materials of construction, 142 

 navigable depth to be given, 136 

 size of locks, 137 

 Canals, ancient, 2 



choice between, and rivers, 2 

 Colbert Shoals, 291 

 in United States, table of, 4 

 Louisville and Portland, 284 

 Muscle Shoals, 292 

 St. Mary's Falls, 291 

 Care of lock gates, 189 

 Causes of failure of levees, 89 

 Cement for concrete locks, 166 

 specifications, 335-339 



Changes in high- and low- water marks, 13 

 Chanoine wicket dams, 227. (See Wicket dams) 

 Channel, alteration of, 342 

 Characteristics of rivers 7 

 Character of bank protectio'n, 67 

 Chief of Engineers, administration of river works, 5 

 Chittendcn, Capt. H. M., drum dam, 175, 259 



on storage reservoirs, 102 

 Chocks on lock walls, 162 

 Chute, location of, in dredging, 47 

 Clam-shell dredge, 45 

 Classes of movable dams, 209 

 Clearing pools of timber, etc., 143 

 Closing-dikes, 65 

 Coffer-dams, 141, 159, 307 

 Coffer- walls in locks, 158 



Collin. M., applied gates for removal of sand, 42 

 Combination dredge, 45 



lock gate, 187 

 Conclusions as to German system of regulation, 56 



351 



