...TO ROBSON; DJ GREATHEAD © Thomas Telford and ICE 1982 ICID INTERNATIONAL COMMISSION ON IRRIGATION A -ND DRAINAGE WEED RESEARCH ORGANISATION COMMONWEALTH I METHODS CONTROL DRAINAGE CHANNELS WEEDS GROWTH CUTTING MECHANISED HERBICIDES BIOLOGICAL AGENTS WATER POLLUTION...

...-gauging stations the extension of this side of river board work can be expected. 3. Hampshire hasmanyvaluable trout and salmonfisheries that thrive on the steady flowof spring water,from the Chalk, containindigssolved salts which in turn foster the growth of water weeds essential to a good fishery...

...V H TRIPP WORKS CANALS SYSTEMS TRANSPORT PLANNING TRAFFIC CONDITIONS FACILITIES MODERNISATION MAINTENANCE METHODS BANKS EROSION MANUFACTURE DRIVING SMALL REINFORCED CONCRETE SHEETPILES DREDGING EQUIPMENT SHEET PILES MECHANISATION AGRICULTURE WEEDS CUTTING AQUEOUS...

...-considered industrial and urban developments of the past have spread across the flood plains of rivers and have even encroached on the actual channels, leaving many drainage difficulties. Reference is made to the problems created by the existence of derelict mills and navigations, the prolific annual weed...