National Fish Habitat Action Plan (NFHAP) 2010 HCI Scores and Human Disturbance Data for Hawaii Linked to NFHAP Catchments (developed using the 1:24,000 scale National Hydrography Dataset) VERSION 2.0: ESRI Service Definition
Dates
Publication Date
2013-08
Start Date
2008
End Date
2010
Summary
This service definition contains sub-indices comprised of various anthropogenic land use/covers respresentative of the risk of potential habitat degradation to streams within the state of Hawaii. This file is an updated version of 'nfhap_hci_hawaii.shp' and incorporates the suggestion from the Hawaii Fish Habitat Partnership of removing trails and paths from the road network to help better represent amounts of disturbance in remote areas such as the Na Pali coast. Subindices are summarized for local and network catchments specific to perennial stream reaches throughout the state. The local and network catchments were developed using a modified version of the 1:24,000 scale National Hydrography Dataset (NHD) as a baselayer. Sub-indices [...]
Summary
This service definition contains sub-indices comprised of various anthropogenic land use/covers respresentative of the risk of potential habitat degradation to streams within the state of Hawaii. This file is an updated version of 'nfhap_hci_hawaii.shp' and incorporates the suggestion from the Hawaii Fish Habitat Partnership of removing trails and paths from the road network to help better represent amounts of disturbance in remote areas such as the Na Pali coast. Subindices are summarized for local and network catchments specific to perennial stream reaches throughout the state. The local and network catchments were developed using a modified version of the 1:24,000 scale National Hydrography Dataset (NHD) as a baselayer. Sub-indices include urban impacts, agricultural land use, former plantations, density of ditches, point source pollution, stream fragmentation, and 303D listed streams . The indices compiled and attributed to NHD catchments were developed using landscape variables identified as being: (1) meaningful for assessing potential risks to fish habitat; (2) consistent across the entire study area (i.e., five main Hawaiian islands) in the way that they were assembled; (3) representative of conditions since 2000, and (4) of sufficient spatial resolution that they could be used to discriminate among conditions in local catchments. This service definition also includes composite scores combining information from all sub-indices that estimate total risk for each NHD stream reach in Hawaii.
These data were assembled for multiple purposes. First, they were gathered for conducting a condition assessment of fluvial waterbodies throughout the five main Hawaii islands in support of the National Fish Habitat Action Plan (NFHAP). Second, these data were intended to be made available to NFHAP Partnerships as well as other users interested in acquiring consistently-organized information characterizing river systems over larger regions. This work was supported by local, state, and federal partners of NFHAP, including the U.S. Fish and Wildlife Service, the U.S. Geological Survey, and the Hawaiian Fish Habitat Partnership(HFHP). Because the condition assessment was conducted over such a large geographic region, we adopted a landscape approach for assessment which assumed that anthropogenic land use/cover as well as natural characteristics of watersheds affect a given unit of habitat which in turn could affect fishes. It was necessary to use a landscape approach because landscape data are available for every location in Hawaii whereas consistently collected local measures of habitat or biological indicators of habitat condition are only available at a very small percentage of locations throughout the state.