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Spatial scales to which data were attributed for Hawaii inland stream assessment. Units include local catchments (A), network catchments (B), and downstream main channel catchments (C).
This interactive figure summarizes the risk of fish habitat degradation. The currently selected tab shows data from the assessment of streams for Alaska. (a) Relative condition of fish habitat in streams. Stream summaries represent percentage of HUC12 area in each condition class. (b) Map showing risk of fish habitat degradation. The default view shows all stream condition classes. User may change map display by selecting a bar in (a), resulting in a display of the selected condition class in (b). Please see How to Read this Report for important information about strengths and limitations of these findings. Click here to download scores from the Alaska assessment of streams.
Steps for 2015 hawaii assessment of stream fish habitats.
Most severe disturbances in the Pacific Coast States associated with stream reaches being scored as having high or very high risk of habitat degradation. Disturbances are grouped into large groups (fragmentation by dams; nutrient and sediment pollution; human population; road length and crossings; water withdrawals; urban land use; agricultural land use; mines and impervious surface cover) within the four spatial scales (local catchment, network catchment, local buffer, and network buffer). Only disturbance groups that have greater than 5% of stream length in a given category are represented in this figure. Note that not all disturbance categories are available for each spatial scale; buffers have only urban land...
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