Actual ownership of any land should be verified using legal documents such as contracts. leases, etc. and/or Master Title Plats (federal land),
A routine has been established and refined over time to extract selected data and output it in a predefined format. The resulting flat file, which contains 1 record per transaction, is placed on a UNIX platform and compressed.
The program run by BLM to extract lands status data for DNR is known as DNRDUMP. BLM's Division of Support Services, Branch of Information Technology Services, Application Services Section (AK954), processes the data.
ADNR staff then ftp the compressed file to working space on their UNIX based network. The data is summarized by record on Meridian, Township, Range, Section (MTRS).
ADNR's data is extracted from the Land Administration System (LAS) data warehouse to a flat file. Casetype, casestatus and land status is used to select and classify extracted data.
A third source of data used in the compilation of this coverage is an historical section level dataset which contains established attributes. Currently the CSU names is the only data used from this dataset.
BLM and LAS data are processed by ADNR using SAS. The two primary programs are: BLMLS.SAS LASLS.SAS. These programs distill the raw BLM and LAS data to section level data using the secondary tables contained in BLMFMTS.SAS and LASFMTS.SAS which contain tables to classify BLM casetypes into DNR categories.
The summary results create a dataset with one (1) observation per section.
In Arc/Info (current version 8.3) the newly generated section level coverage is dissolved on all attributes.
The coverage is then clipped to the Alaska 1:63360 coastline (cst63xsi) coverage.
Any hardcopies or published datasets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the Alaska Department of Natural Resources.
All LAS and ALIS records have been used statewide.
Hierarchy:
1. State Municipal Entitlements or Land Exchanges
and Other Land Disposals.
2. Patented Disposed Federal Lands (Native Allotments
or Private Parcels).
3. State Patented, Tentatively Approved or Other
State Acquired Lands
(includes casetypes 101-114, 116-117, 128-129).
4. Alaska Native Claims Settlement Act (ANCSA)
Patented or Interim Conveyed.
5. Major Military.
6. National Wildlife Refuges, National Park System
Units.
7. National Wild & Scenic Rivers outside National
Park System Units and National Wildlife Refuges.
8. National Forests and Monuments, National Petroleum
Reserve-Alaska, National Recreation Areas and
National Conservation Areas.
9. Bureau of Land Management Public Lands.
Following is the basic aml (ARC Macro Language) used to generate a general
land status map using the LSOWN generalization. This is listed in the order
in which they it is performed. (.mape_alb is a variable set to the mape
extent)
Major Military Land
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly lsown = 1600
polygonshades [pathname ALLSTAT] 91
clearselect ALLSTAT poly
Native Pat/IC lands
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly lsown = 2101
asel ALLSTAT poly lsown = 2102
asel ALLSTAT poly lsown = 2111
asel ALLSTAT poly lsown = 2112
polygonshades [pathname ALLSTAT] 111
clearselect ALLSTAT poly
State Owned Land
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly lsown = 3101
asel ALLSTAT poly lsown = 3102
polygonshades [pathname ALLSTAT] 522
clearselect ALLSTAT poly
State and Native Owned land in same section
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly lsown = 4100
polygonshades [pathname ALLSTAT] 419
clearselect ALLSTAT poly
Private Owned
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly lsown = 5101
asel ALLSTAT poly lsown = 5102
asel ALLSTAT poly lsown = 5103
polygonshades [pathname ALLSTAT] 32
clearselect ALLSTAT poly
State Selections (hatched)
resel ALLSTAT poly box %.mape_alb% pass
resel ALLSTAT poly fflag > 1 or sflag > 1
polygonshades [pathname ALLSTAT] 151
clearselect ALLSTAT poly
Native Selections (hatched)
clearselect ALLSTAT poly
res ALLSTAT poly box %.mape_alb% pass
res ALLSTAT poly natsel <> 0
asel ALLSTAT poly cirisel <> 0
polygonshade [pathname ALLSTAT] 36
clearselect ALLSTAT poly