Related by context. Frequent words. (Click for all words.) 66 Lake Rotoiti 60 Clutha River 59 Waitaki River 58 Manukau Harbour 57 weir 57 weirs 55 watercourse 54 outfall 53 Murrumbidgee River 53 Lake Wakatipu 51 Lake Hawea 51 tailrace 51 dam 50 catchment 50 Fitzroy River 50 silts 50 estuary 49 groynes 49 tributary 49 flume 49 tributary streams 49 Waimakariri River 49 Effluent 49 cumecs 49 headworks 48 River Derwent 48 Creek tributary 48 dam spillway 48 Hurunui 48 treated effluent 48 revetment 48 effluent discharge 48 silting 48 spillway 48 Ohau 48 river 48 fishway 47 Tongariro 47 creek 47 Catchment 47 basin 47 Floodway 47 sewage discharges 47 lagoon 47 jetty 47 causeways 47 breakwater 47 stormwater drain 47 oxbow 46 Whanganui River 46 headwater 46 watercourses 46 catchments 46 reed beds 46 Diversion 46 Reservoir 46 coffer dam 46 stormwater drains 46 Estuary 46 inlet 46 Drainage 46 reservoir 46 lake 46 Raw sewage 46 causeway 46 silt 46 effluent 46 Didymo 46 Salinity 46 aquatic weeds 46 Lagoon 45 breakwall 45 waterway 45 shoaling 45 SH2 45 downstream 45 Ghaggar 45 Great Dividing Range 45 Wimmera River 45 Seepage 45 flumes 45 SH1 45 canal 45 Waikato Tainui 45 River tributary 45 tidal rivers 45 Wivenhoe Dam 45 Sediment 45 millpond 45 sediment 45 drainages 45 siltation 45 coulee 45 Caloosahatchee 45 riverbed 45 upstream 45 Hawea 45 rip rap 45 Dam 44 unnamed tributary 44 pumphouse