Bureau of Land Management Alaska State Office, 20070914, ANCSA Core Townships.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000335276147. Longitudes are given to the nearest 0.000000335276147. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers that are automatically generated.
varies with MTR
|(Upper) Kalskag,Afognak,Akhiok,Akiachak,Akiak,Akutan,Alakanuk,Alatna,Aleknagik,Allakaket,Ambler,Anaktuvuk Pass,Andreafsky,Angoon,Aniak,Anvik,Atka,Atmautlauk,Atqasuk,Ayakulik,Barrow,Beaver,Belkofski,Bethel,Bill Moore?s Slough,Birch Creek,Brevig Mission,Buckland,Cantwell,Chalkyitsik,Chefornak,Chenega,Chevak,Chickaloon,Chignik,Chignik Lagoon,Chignik Lake,Chistochina,Chitina,Chuathbaluk,Chuloonawik,Circle,Clarks Point,Copper Center,Council,Craig,Crooked Creek,Deering,Dillingham,Dot Lake,Eagle,Eek,Egegik,Eklutna,Ekuk,Ekwok,Emmonak,English Bay,Evansville,Eyak,False Pass,Ft. Yukon,Gakona,Galena,Georgetown,Golovin,Goodnews Bay,Grayling,Gulkana,Hamilton,Healy Lake,Holy Cross,Hoonah,Hooper Bay,Hughes,Huslia,Hydaburg,Igiungig,Iliamna,Inalik,Ivanoff Bay,Kaguyak,Kake,Kaktovik,Kaltag,Karluk,Kasaan,Kasigluk,Kiana,King Cove,King Island,Kipnuk,Kivalina,Klawock,Knik,Kobuk,Kokhanok,Koliganek,Kongiganek,Kotlik,Kotzebue,Koyuk,Koyukuk,Kwethluk,Kwigillingok,Larsen Bay,Levelock,Lime Village,Lower Kalskag,Manley Hot Springs,Manokotak,Marshall,Marys Igloo,McGrath,Mekoryuk,Mentasta Lake,Minto,Mountain Village,Naknek,Napaimute,Napakiak,Napaskiak,Nelson Lagoon,Nenana,New Stuyahok,Newhalen,Newtok,Nightmute,Nikolai,Nikolski,Ninilchik,Noatak,Nome,Nondalton,Noorvik,Northway,Nuiqsut,Nulato,Nunapitchuk,Ohogamiut,Old Harbor,Oscarville,Ouzinkie,Paimuit,Pauloff Harbor,Pedro Bay,Perryville,Pilot Point,Pilot Station,Pitkas Point,Platinum,Point Hope,Point Lay,Port Graham,Port Heiden,Port Lions,Portage Creek,Quinhagak,Rampart,Red Devil,Ruby,Russian Mission,Salamatof,Sand Point,Saxman,Scammon Bay,Selawik,Seldovia,Shageluk,Shaktoolik,Sheldon's Point,Shishmaref,Shungnak,Sleetmute,Solomon,South Naknek,St. George,St. Mary's,St. Michael,St. Paul,Stebbbins,Stevens Village,Stony River,Takotna,Tanacross,Tanana,Tatitlek,Tazlina,Telida,Teller,Togiak,Toksook Bay,Tuluksak,Tuntutuliak,Tununak,Twin Hills,Tyonek,Uganik,Ugashik,Umkumiute,Unalakleet,Unalaska,Unga,Uyak,Wainwright,Wales,White Mountain,Woody Island,Yakutat||Village Names|
|Ahtna,Aleut,Arctic Slope,Bering Straits,Bristol Bay,Calista,Chugach,Cook Inlet,Doyon,Koniag,NANA,Sealaska||ANCSA Region Corporation|
Coordinates defining the features.
|Afognak Native Corporation,Ahtna, Inc.,Akhiok-Kaguyak, Inc.,Akiachak, Limited,Akutan Corporation,Alakanuk Native Corporation,Alaska Peninsula Corporation,Aleknagik Natives Limited,Arviq Incorporated,Askinuk Corporation,Atmautlauk, Limited,Atqasuk Corporation,Atxam Corporation,Ayakulik, Inc.,Azachorok, Inc.,Baan O Yeel Kon Corporation,Bay View, Inc.,Bean Ridge Corporation,Beaver Kwit'chin Corporation,Becharof Corporation,Belkofski Corporation,Bethel Native Corporation,Brevig Mission Native Corporation,Cape Fox Corporation,Chalkyitsik Native Corporation,Chaluka Corporation,Chefarnrmute, Inc.,Chevak Company,Chickaloon-Moose Creek Native Assn.,Chignik Lagoon Native Corporation,Chignik River Limited,Chinuruk Inc.,Chinuruk, Inc.,Chitina Native Corporation,Choggiung Limited,Choggiung, Limited,Chuloonawik Corporation,Council Native Corporation,Cully Corporation, Inc.,Danzhit Hanlaii Corporation,Deloy Ges, Incorporated,Dineega Corporation,Dinyea Corporation,Doleoycheet, Inc.,Dot Lake Native Corporation,Eklutna, Inc.,Ekwok Native Limited,Emmonak Corporation,Evansville, Inc.,Far West, Incorporated,Gana'a'Yoo, Limited,Gana-a'Yoo, Limited,Golovin Native Corporation,Gwitchyaazhee Corporation,Haida Corporation,Hee-Yea-Lingde Corporation,Huna Totem Corporation,Hungwitchin Corporation,Igiugig Native Corporation,Iliamna Natives Limited,Inalik Native Corporation,Iqfijouaq Company,Isanotski Corporation,K'oyitl'ots'ina, Limited,Kake Tribal Corporation,Kaktovik Inupiat Corporation,Kasigluk Incorporated,Kavilco, Incorporated,Kijik Corporation,Kikiktagruk Inupiat Corporation,King Island Native Corporation,Klawock Heenya Corporation,Knikatnu, Inc.,Kokarmuit Corporation,Koliganek Natives Limited,Kongnikilnomuit Yuita Corp.,Koniag, Inc.,Kootznoowoo, Inc.,Kotlik Yupik Corporation,Koyuk Native Corporation,Kugkaktlik Limited,Kuitsarak Incorporated,Kuukpik Corporation, Inc.,Kwethluk Incorporated,Kwik Incorporated,Leisnoi, Inc.,Levelock Natives Limited,Lime Village Company,MTNT, Ltd,Manokotak Natives Limited,Marys Igloo Native Corporation,Maserculiq Incorporated,Mendas Cha-Ag Native Corporation,NANA Regional Corporation, Inc.,Napakiak Corporation,Napaskiak Corporation,Nelson Lagoon Corporation,Nerklikmute Native Corporation,Newtok Corporation,Nima Corporation,Ninilchik Natives Association, Inc.,Northway Natives, Inc.,Nunakauiak Yupik Corporation,Nunamiut Corporation, Inc.,Nunapiglluraq Corporation,Nunapitchuk Limited,OHOG, Incorporated,Oceanside Corporation,Old Harbor Native Corporation,Olgoonik Corporation, Inc.,Oscarville Native Corporation,Ounalashka Corporation,Ouzinkie Native Corporation,Paimuit Corporation,Paug-Vik Incorporated, Limited,Pedro Bay Corporation,Pilot Point Native Corporation,Pilot Station Native Corporation,Pitkas Point Native Corporation,Qanirtuuq Incorporated,Qemirtalek Coast Corporation,Qinarmiut Corporation,Russian Mission Native Corporation,Saguyak, Incorporated,Salamatof Native Association, Inc.,Sanak Corporation,Sea Lion Corporation,Seldovia Native Association, Inc.,Seth-de-ya-ah Corporation,Shaan-Seet Incorporated,Shaktoolik Native Corporation,Shishmaref Native Corporation,Shumagin Corporation,Sitnasuak Native Corporation,Solomon Native Corporation,St. George Tanaq Corporation,St. Mary's Native Corporation,St. Michael Native Corporation,Stebbins Native Corporation,Stuyahok Limited,Swan Lake Corporation,Tanacross Incorporated,Tanadgusix Corporation,Teller Native Corporation,The Chenega Corporation,The English Bay Corporation,The Eyak Corporation,The King Cove Corporation,The Kuskokwim Corporation,The Kuskowim Corporation,The Port Graham Corporation,The Tatitlek Corporation,Tigara Corporation,Tihteet'Aii, Inc.,Toghotthele Corporation,Togiak Natives Limited,Tozitna, Limited,Tulkisarmute Incorporated,Tununrmiut Rinit Corporation,Twin Hills Native Corporation,Tyonek Native Corporation,Uganik Native Inc.,Ukpeagvik Inupiat Corporation,Unalakleet Native Corporation,Unga Corporation,Uyak Natives Inc.,Wales Native Corporation,White Mountain Native Corporation,Yak-Tat Kwaan Incorporated,Zho-tse, Incorporated||ANCSA Village Corporation Name|
(907) 271-5799 (voice)
This layer provides a spatial representation of the ANCSA core townships and the acreage entitlements by village name.
Person who carried out this activity:
(907) 271-5799 (voice)
Attributes assigned to this coverage are defined in the Informix tables. The twpgrid coverage is joined to the Informix tables by means of a unique identifier.
Attributes are extracted from the Informix tables and joined with the coverage features to ensure referential integrtity with the database. Spot checks were performed to verify attribute accuracy.
This data set is constructed from the protracted township grid. Accuracy is derived from that data source and is shown below:
The accuracy of the coordinates in this data is absolute due to their theoretical nature, however the source data shows values to the nearest fraction of a second of latitude or longitude as follows:
1. Township Corners:
0.001" as shown on or calculated from official protraction diagrams, except Umiat Meridian latitudes where they are 0.01".
2. Section Corners:
0.00001" as calculated to preserve angularity and distance.
3. Points along Alaskan-Canadian Boundaries:
3a. For points between Tongass Passage and Mt. St. Elias (not including Boundary Point 187), 0.01" as shown in U.S. Department of State, International Boundary Commission (IBC) publication "JOINT REPORT UPON THE SURVEY AND DEMARCATION OF THE BOUNDARY BETWEEN CANADA AND THE UNITED STATES FROM TONGASS PASSAGE TO MOUNT ST. ELIAS, 1952."
3b. For points between Mt. St. Elias and the Arctic Ocean (including Boundary Point 187), 0.00001" to preserve backwards compatibility with National Geodetic Reference Datum of 1983 using U.S., Department of Commerce, National Geodetic Survey (NGS) computer program NADCON version 2.1.
There is a one-to-one relationship between each township in the spatial database and on the offical protraction diagrams
Polygon topology is present. No intersection errors or label errors are present.
Are there legal restrictions on access or use of the data?
- Discretionary, contains no sensitive information - generally considered releasable.
- Any hardcopies or published datasets using this data shall clearly indicate their source.
Any users wishing to modify this data are obligated to report the extent of their modifications. User specifically agrees not to misrepresent modifications to this data, as approved or endorsed by the BLM.
(907) 271-5799 (voice)
No warranty is made by the Bureau of Land Management as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data.
(907) 271-5799 (voice)