BLM - Colorado Mineral Material Disposal Sites

Creator(s):

U.S. Department of the Interior, Bureau of Land Management (BLM)

Description:

The dataset is dissolved on case-level attributes and projected to NAD83/UTM13n. Some errors were encountered in generating this dataset, meaning that the dataset does not contain polygons representing all of the legal land descriptions queried from LR2000.When using this dataset, it is important to remember that these datasets are a best-effort attempt to portray textual land descriptions geospatially. Generally speaking, the datasets generated using this process do not include all of the descriptions contained in the LR2000 records and the appropriate error file should be consulted to determine whether the shapefile contains all of the features you are specifically interested in. In all cases, each legal land description queried from LR2000 should be contained in either the GIS dataset or the corresponding error file. Also note that the Python script breaks complicated land descriptions down into their component parts, so it is entirely possible that a particular description may be partially represented in a GIS dataset and partially in the corresponding error file.The process used to generate these files is under continuous development by the BLM Colorado State Office, and as such, things may change in the future. Shapefile Format - To illustrate the Mineral Material Disposal Sites dataset for Colorado in a digital format, for map display, query, and analysis.Description of the Error Spreadsheet: BLM uses a Python script to automatically generate polygon shapefiles from legal land descriptions contained in LR2000 records. The script does this by looking for a polygon in BLM's GCDB database to match the LR2000 land description and then cloning or subdividing the polygon in the new shapefile. The error spreadsheet that accompanies the downloadable data contains LR2000 records which the script wasn't able to match to GCDB polygons. This typically occurs for one of two reasons. Either the LR2000 record didn't contain a valid legal land description, or the script wasn't able to find a unique polygon in the reference GCDB database to match the legal land description provided in LR2000.A published revision of the Department Manuals Part 305: Departmental Science Effects, Chapter 3: Integrity of Scientific and Scholarly Activities (305 DM 3), effective December 16, 2014, is available online at http://elips.doi.gov/ELIPS/DocView.aspx?id=4056. Scholarly information considered in Departmental decision making must be robust, of the highest quality, and the result of as rigorous scientific and scholarly processes as can be achieved. Most importantly, it must be trustworthy. This policy helps us to achieve that standard (http://www.doi.gov/scientificintegrity/index.cfm)Feature Class Type

Publisher:

U.S. Department of the Interior, Bureau of Land Management (BLM)

Place(s):

Colorado

Subject(s):

Mines and mineral resources, Energy, and Boundaries

Date Issued:

2020-04-18

Use and reproduction:

The organization that has made the Item available believes that the Item is in the Public Domain under the laws of the United States.

Identifier:

https://ark.colorado.edu/ark:/47540/h3323j61p7rs

Held by:

University of Colorado Boulder