Wairau/Awatere Resource Management Plan 5.6.1.6 To strengthen or replace structurally questionable lengths of stopbank of the Taylor through Blenheim. 5.6.2 New Works Required • Removal of overhanging willow and other riparian trees from upstream of Swamp Road. • Berm shaping works on both banks from upstream of Swamp Road. • Stopbank raising from downstream of Riverlands corner. • Narrow stopbank reconstruction. • Stopbank strengthening of Taylor River in Blenheim. • Replacement of inadequate culverts. 5.7 Upper Opawa and Roses Overflow 5.7.1 Design Intentions 5.7.1.1 Ensure the extensive berms are maintained in a hydraulically efficient state by removing impeding vegetation and preventing the planting of impeding vegetation. 5.7.1.2 Upgrade poor condition stopbanks in isolated areas. 5.7.2 New Works Required • Reconstruct and raise low stopbanks downstream of Thompsons Ford Road. 5.8 Omaka River (to Hawkesbury Road Bridge) 5.8.1 Design Intentions 5.8.1.1 Maintain a cleared fairway of typically 50 metres width within a stopbanked system or natural terrace system. 5.8.1.2 Maintain bank edge protection of this cleared fairway of willow tree plantings supported by retards, and in places of heavy bank attack, rock work. 5.8.1.3 To have a moratorium of gravel extraction downstream until there is evidence of the river channel aggrading and reducing waterway capacity. 5.8.2 New Works Required • Tree planting bank edge protection with rail iron retards. 5.9 Fairhall and Mill Streams (up to New Renwick Road) 5.9.1 Design Intentions 5.9.1.1 For the stopbanked Fairhalldiversion to maintain its river berms in a clear hydraulically efficient condition. App F - 6