State of the Environment Surface Water Quality in Otago 2006-2017 [pdf, 5.8 MB]
...central areas, with tussock grassland and tors; and dramatic coastlines around the Otago Peninsula and the Catlins. Lowland pasture country is common in the west. The character of the region’s water bodies is diverse, reflecting the variation in environmental conditions throughout the region. The Clutha River/Mata-Au drains much of the Otago region. Its catchment area totals 21,000 km2, and 75% of the total flow of the river at Balclutha comes from the outflows of Lakes Hawea, Wanak...