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    Data Type: Freshwater Systems; Statewide rivers and streams were assembled from eighteen files in the USGS 1:2,000,000 Digital Line Graphs (DLG) dataset. There are nearly 30,000 arcs in this coverage with at least 34 different arc attributes.

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    Data Type: Freshwater Systems; Statewide lakes greater than 20 acres was assembled from seventeen separate files in the USGS 1:2,000,000 Digital Line Graphs (DLG). This dataset is intended for widely varied application.

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    As Alaska's cities get bigger, streams that once supported healthy runs of salmon now find themselves polluted, re-routed or otherwise altered. Chester Creek is one such stream. It flows through the center of Anchorage, Alaska's largest city. As Doug Schneider reports in this week's Arctic Science Journeys Radio, a scientist who studied the creek offers suggestions to save the creek's city salmon.

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    Data Type: Multi-Resources; Series of automated maps recording ANCSA & S12(a) and S12(b) conveyances, anadramous streams, timber stands, habitat, subsistence areas (including marine mammal haul-out areas); Aleut place names, S17(b) easements, oil spill impacted beaches, mineralogy, land planning and use areas all specific to Chenega Corporation lands.

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    Data Type: Freshwater Systems; Selected major rivers were extracted from all rivers and streams in the USGS 1:2,000,000 Digital Line Graphs (DLG) dataset. The major rivers include the Copper, Susitna, Kuskokwim, Yukon, Koyukuk, Kobuk, Noatak, and Colville Rivers. There are over 5300 arcs in this coverage with at least 25 arc attributes.

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    Data Type: Freshwater System; This dataset combines DNR photo revised hydrography at 1:63,360 scale with ADF&G's known upper and lower extents of anadromous fish streams for the EVOS spill affected areas in PWS, CIR, and KAP geographic regions. The use of this data is to provide anadromous fish stream data as a resource for use in the oil spill damage identification, oil spill response, habitat restoration activities.

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    Data Type: Freshwater Systems; Streams with channel type and anadromous habitat. Scale is 1:31,680.

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    Data Type: Exxon Valdez Oil Spill; This database was developed to incorporate August 1990 survey data files from Exxon. Data is referenced to beach segment and subdivision and includes oiling, beach substrate type and presence of anadromous streams. This database could be linked to ADEC's GIS system.

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    Data Type: Fish ; Data depicts upper and lower extent of Anadromous fish streams throughout Alaska and is updated regularly. ARC/INFO software is used to manage and update data. This dataset is used to produce the Anadromous Waters Catalog for Alaska. Many other Alaska Resource Management agencies are known to use this dataset within their own agencies, utilizing that subset that pertains to the lands under their jurisdiction. The U.S. Forest Service is known to utilize this dataset and the EXXON Valdez Oil Spill Trustee Council has as well. Additionally, stream arcs are available for the EVOS area.

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    Major hydrological basins and their sub-basins. This dataset divides the African continent according to its hydrological characteristics. The dataset consists of the following information:- numerical code and name of the major basin (MAJ_BAS and MAJ_NAME); - area of the major basin in square km (MAJ_AREA); - numerical code and name of the sub-basin (SUB_BAS and SUB_NAME); - area of the sub-basin in square km (SUB_AREA); - numerical code of the sub-basin towards which the sub-basin flows (TO_SUBBAS) (the codes -888 and -999 have been assigned respectively to internal sub-basins and to sub-basins draining into the sea)