Categories of basin condition corresponding to level of biological condition and hydrologic alteration and its consequences ?

1. Pristine condition: This category represents basins with minimal human disturbance, high biological diversity, and natural hydrologic patterns. The consequences of this condition include healthy ecosystems, abundant wildlife, and clean water sources.

2. Moderately altered condition: Basins in this category have experienced some level of human disturbance, such as land use changes or water withdrawals, leading to moderate impacts on biological communities and hydrologic patterns. The consequences may include reduced biodiversity, degraded water quality, and altered flow regimes.

3. Highly altered condition: Basins in this category have undergone significant human alteration, such as urbanization, agriculture, or dam construction, resulting in severe impacts on biological communities and hydrologic patterns. The consequences may include loss of habitat, decline in species diversity, impaired water quality, and increased frequency of flooding or drought.

4. Degraded condition: This category represents basins with extensive human disturbance, such as pollution, habitat destruction, or over-extraction of water resources, leading to severe degradation of biological communities and hydrologic patterns. The consequences may include loss of ecosystem services, collapse of fisheries, increased risk of water scarcity, and heightened vulnerability to climate change impacts.