SEM Lake Rotorangi Annual Report 2020-2021
plans addressing land management and sediment issues cover around 43055 ha (50%) of the catchment, primarily in the area where dry stock faming is the dominant land use. The trophic level of Lake Rotorangi has been increasing at a very slow rate since monitoring began. Initial monitoring showed the lake was in a mesotrophic state, and has over time moved to a mildly eutrophic state. Previous analysis has determined that the trophic level is heavily influenced by high turbidity values