Monitored sites in the Waimatuku Stream catchment
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Waimatuku Stream
The Waimatuku Stream is located between the Oreti and Aparima catchments. Its headwaters are fed by a large swamp area (the Bayswater Peat Bog) with small springs in the Drummond district also contributing to the base flow.
The stream underwent significant straightening works from the 1920s and is now a channelised stream with uniform bank margins. The Waimatuku Stream typically has moderate flows, with few flood or extreme low flow events because of the base flow contribution from swamp and spring areas. At most flows, the Waimatuku has elevated nitrogen, phosphorus and bacterial levels.
Environment Southland
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