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    Data Type: Subsistence/Traditional Knowledge; This dataset is a multi-layered subsistence database pulling together existing data sources. Layers include drainage, hypsography, supplemental hypsography, political boundaries and ocean net, populated places, park boundaries, land selection status, 1:250,000 USGS Quadrangle boundaries, Ahtna Clan boundaries, native corporation boundaries, traditional use, Ahtna place names, Native routes, registered traplines, trapping areas, woodcutting areas4/88, hunting areas, fishing, boating, and camping areas, wood cutting areas 3/86, hunting areas 3/86, subsistence hunt areas for large mammals, Game Management Units ADF&G. Intended use of information is to aid CRNA meet criteria to establish permanent rights for Ahtna shareholders to pursue subsistence activities in Wrangell St. Elias National Park and preserve and protect Ahtna subsistence use areas and resources from urban competition. This database is part of a cooperative agreement with NPS and BLM to develop information relevant to Customary and Traditional Use determinations, the establishment of Residential Zones for subsistence use in the park and to establish a roster of eligible subsistence users in the Park/Preserve under section 1344 of ANILCA. Copies of the final dataset will reside at BLM, Ahtna, Copper River Native Assoc., and NPS. Some layers of this dataset have been extracted as separate records in the metadata database as they represent data that was automated as a result of this dataset compilation and are new electronic products. See metadata record #118,119,116, and 117.

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    Data Type: Freshwater Systems; This composite stream data layer covers the Prince William Sound and Copper River region. Pacific GIS developed this layer by merging data from the Chugach National Forest Channel Type database, the Alaska Department of Natural Resources (DNR) Exxon Valdez Oil Spill and Alaska Land and Resource Mapping Program databases, and the USGS Digital Line Graph (DLG) database. The most detailed stream coverage is for Prince William Sound and is taken largely from the Chugach NF Channel Type Database. Pacific GIS filled gaps in the Channel Type Database with stream information from the DNR Oil Spill Database. Stream data for areas outside Prince William Sound was drawn largely from the Alaska DNR ALARM Database. Data obtained from the USGS DLG data is very small scale (1:2,000,000 scale) and is suitable only for an overview of streams within the region. All stream data except that obtained from the Chugach NF Channel Type database include information on presence of anadromous fish, although this information is variable in age and not documented as to source. Related data layers include polygonal hydrologic features (hydro_pl)

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    Data Type: Remotely Sensed Data; Unsupervised classification of SPOT image K461/J226 into 256 classes. The raw image was purchased from SPOT and classified by Ducks Unlimited Inc.

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    Data Type: Infrastructure; This layer contains detailed road data organized by 1:250,000 scale USGS quadrangles for the Prince William Sound - Copper River ecosystem. Pacific GIS derived this dataset from 1:250,000 scale, 1990 Census TIGER / line file data. Although this dataset is very detailed, problems in spatial accuracy become apparent at large scales.

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    Data Type: Birds; This data set contains aerial transect data from which trumpeter swan numbers on the Copper River Delta were assessed for 1994. Standard aerial survey method was used flying at 500-600 ft. The purpose of this data is to monitor populations as an indicator of population health, and overall habitat condition.

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    Data Type: Remotely Sensed Data; ERDAS 7.5 GIS file with 256 class unsupervised classification of SPOT image K462/J226. This image was purchased from SPOT Data Inc., rectified and classified.

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    Data Type: Freshwater Systems; This data layer is a composite of polygonal surface hydrography data, derived from several different sources at differing scales, organized by 1:250,000 scale USGS quadrangles, and included as a merged layer. This layer covers the Prince William Sound - Copper River ecosystem and includes information on lakes, wide river channels, marine areas, and glaciers. The most detailed stream and lake coverages for Prince William Sound are taken largely from the Chugach National Forest's Channel Type Database (for line features) and the Timber Type Database (for polygonal features). Pacific GIS filled gaps in these datasets with stream and lake information from the Alaska Department of Natural Resources (DNR) Exxon Valdez Oil Spill Database. Pacific GIS drew stream data for areas outside of Prince William Sound largely from Alaska DNR's Alaska Land and Resource Mapping (ALARM) database. This dataset is considerably coarser than the hydrography information for Prince William Sound. All stream data, except those obtained from the Chugach National Forest Channel Type Database, include information on presence of anadromous fish, although this information is variable in age and not documented as to source. Pacific GIS merged these datasets used for this quad-by-quad layer to develop a composite surface hydrography layer for the Prince William Sound - Copper River basin ecosystem (hydro_pl in the ecosystem directory). A related data layer, river250 contains stream data for the greater PWS - Copper River ecosystem.

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    Data Type: Boundaries; This layer includes data on protected areas in the Prince William Sound - Copper River ecosystem including Wild and Scenic Rivers, State Marine Parks, conservation lands designated under the Alaska National Interest Lands Conservation Act (ANILCA), and State of Alaska Legislatively Designated Areas (LDAs). Pacific GIS built this layer by merging data from the Alaska Department of Natural Resources (DNR), the Chugach National Forest, and the National Park Service. Land protection is a relative, rather than absolute concept; uses that would be allowed under one level of protective status (such as logging in a National Forest) would be prohibited in other types of designation (such as wilderness areas within a National Park). The protected areas layer includes sufficient information on specific designations within larger jurisdictions to allow relative ratings of protection to be developed. For additional information regarding land ownership and land status please see the documentation for the LANDOWN coverage.

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    Data Type: Freshwater Systems; This layer contains major river data for the Prince William Sound - Copper River ecosystem at 1:2,000,000 scale. Pacific GIS derived this layer from a statewide, Digital Line Graph (DLG) coverage obtained from USGS.

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    Data Type: Multi-Resources; Local data base was compiled in support of the Department of Natural Resources Copper River Basin Area Plan. This database was compiled through a contract to Arctic Geo Resources (AGRA) by the State of Alaska DGGS, Resource Analysis Section. The database contains data of two scales, 1:250,000 and 1:63360. Areas of high interest mapped at the 1:63360 scale, are primarily state owned lands in the central basin and along major roads. Geology and vegetation (minimum unit 20-40 acres) are the main themes mapped at the detailed scale. Other data topics, trails, roads, recreation use, political and administrative use, oil and gas resources, minerals, infrastructure, hydrology, historical and archeological sites, general geology, and geologic constraints. Other statewide coverages were used to supplement this data set. Soils were used from the area 612 Soil Survey conducted by Soil Conservation Service. Portions of this dataset have been extracted and reformatted for use in the Copper River Basin GIS Database developed by Ecotrust/Pacific GIS, in 1995.