timber products trade — continued Page 



world timber supply potential 218-220 



world timber trends 216-218 



timber products use 200-204, 226, 269 



timber resource informaton needs 236 



timber resource inventory needs 228 



timberland, commercial 227-228, 237, 264 



area trends 228, 237 



distribution 221 



ownership 227-229, 264-265 



productivity 228 



roundwood output 229 



timberland, noncommercial 127 



timber products 200, 202, 204-207, 269 



trails 81 



Applachian Trail 66, 8 1 , 98 



California Aqueduct Trail 81 



Continental Divide Trail 81 



designation 97 



National Recreation 81 



National Scenic 66, 8 1 , 97 



nonmotorized travel 80, 81 



off-road vehicle use 80, 8 1 , 83 



Pacific Crest Trail 81 



Potomac Heritage Trail 81 



recreation 66 



scenic 78, 8 1 



trapping 1 13, 131 



tropical hardwoods 216, 218, 219 



urban forests 59, 100 



U.S. roundwood consumption 197, 208, 210 



U.S. timber resources and supplies . . . 218, 227, 237 



commercial timberland 227, 229 



growth-removal balances 236 



hardwood demand-supply balances 251-252 



management opportunities .... 219, 247, 260, 265 



price increase effects 252 



softwood demand-supply balances 247-251 



timber demand-supply relationships 247 



timber growth 23 1 , 245-246 



timber inventory 218, 228, 246 



timber mortality 23 1 , 245-246 



timber removals 235 



timber supplies 218, 247 



vegetative cover 11-14, 158, 227, 265, 311 



veneer logs 106-107, 224 



visitor centers 74, 101, 104 



waste (water pollution) 138-139, 



305-308,314,317 

 industrial 305 



waste (water pollution) — continued Page 



mining 1 39, 305 



municipal 1 39, 305 



other 139, 267, 305 



waste paper 267 



water areas xi, 24, 30, 35, 44 



water 273-318 



consumptive use 273, 276-286, 293 



domestic use 276 



flooding 296-301 , 314 



instream uses 286 



irrigation 274, 276, 284, 293 



livestock use 275 



manufacturing 276, 284 



mineral processing 276 



pollution 302, 305-308, 314-316 



public lands administration 276 



steam electric cooling 274, 284 



supply 287-296 



Water Resource Region projections 291-293 



vater demand-supply balances 291 



water development opportunities 310 



desalting 310 



interbasin transfer 310 



irrigation loss reduction 310 



land management 308 



phreatophyte reduction 309, 314 



pollution control 305-308 



precipitation modification 310 



pricing methods 309 



recycling 310 



snowpack management 310,317 



transmission control 309, 310 



use reduction 309, 310 



vegetative cover change 311-313 



watershed management 310 



water pollution 305-308 



agricultural irrigation 305 



agricultural runoff 305 



construction 305 



industrial waste 305, 310 



mining 305 



municipal waste 305, 310 



nonpoint sources 305, 315-316, 317 



other waste 305 



point sources 305, 314-315, 317 



sediment runoff 305 



silvicultural activities 305 



water problems 290-294, 305-308, 316-318 



water quality 30 1 -308 



351 



