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Service Description: This Service represents the spatial extent and boundaries of the BLM National Landscape Conservation System (NLCS) National Monuments, National Conservation Areas and Similar Designations. This dataset is a subset of the official national dataset, containing features and attributes intended for public release and has been optimized for online map service performance. National monuments encompass landscapes of tremendous beauty and diversity, ranging from rugged California coastline to vividly-hued desert canyons. The Antiquities Act of 1906 grants the President authority to designate national monuments in order to protect “objects of historic or scientific interest.” While the President establishes most national monuments, Congress occasionally designate National Monuments to protect certain natural or historic features. National conservation areas (NCAs) and similarly designated lands are designated by Congress to conserve, protect, enhance, and manage public lands for the benefit and enjoyment of present and future generations. The Bureau of Land Management's National Conservation Lands include 19 NCAs and six similarly designated lands in ten states. These lands feature exceptional scientific, cultural, ecological, historical, and recreational values. They differ tremendously in landscape and size, varying from the coastal beauty of California's 20-acre Piedras Blancas Light Station Outstanding Natural Area to the rugged desert vistas of Nevada's 800,000 acre Black Rock Desert-High Rock Canyon Emigrant Trails NCA.

All Layers and Tables

Has Versioned Data: false

MaxRecordCount: 2000

Supported Query Formats: JSON

Supports Query Data Elements: true

Layers:

• NLCS National Monuments, National Conservation Areas and Similar Designations Polygons (0)

Tables:

• nlcs_desc (1)

Description: Many of the BLM National Datasets cannot be taken offline due to the number of vertices in the dataset. In addition, displaying the data using a Feature Service crashes ArcGIS Server due to complex geometries (ie Godzilla polygons). As a result, it became imperative to generalize the Feature Classes so that they can be used in a Feature Service as well as being taken offline. Using configuration settings, the user may choose between using a Smoothing algorithm or Simplification algorithm to perform generalization. Documentation on the Smoothing algorithm can be found here: https://pro.arcgis.com/en/pro-app/latest/tool-reference/cartography/smooth-polygon.htm Documentation on the Simplification algorithm can be found here: https://pro.arcgis.com/en/pro-app/latest/tool-reference/cartography/simplify-polygon.htm Note: At the time of this writing, only polygon smoothing/simplification is tested. However, Linear datasets are also supported (FEATURE_TYPE) *Each of the features within this feature class were generalized. To keep the naming convention the same, we added the _gen after each feature class so this service and the data layers won’t get confused with the other NLCS services. This service and the underlying data will be kept “in-sync” with national replication. This polygon feature class represents the spatial extent and boundaries of the BLM National Landscape Conservation System (NLCS) National Monuments, National Conservation Areas and Similar Designations. This dataset is a subset of the official national dataset, containing features and attributes intended for public release and has been optimized for online map service performance. The Implementation Guide represents the official national dataset from which this dataset was derived.

Service Item Id: 9ed16a453c09439b96a393c0a25503ec

Copyright Text: Bureau of Land Management, Headquarters (HQ)

Spatial Reference: 102100  (3857)  LatestVCSWkid(0)


Initial Extent:

XMin: -1.369056694059309E7
YMin: 4130707.4187400886
XMax: -1.0846701824234433E7
YMax: 5930952.308912081
Spatial Reference: 102100  (3857)  LatestVCSWkid(0)

Full Extent:

XMin: -1.6337173629624331E7
YMin: 3116920.1412971905
XMax: -8914381.531559477
YMax: 9834791.198282568
Spatial Reference: 102100  (3857)  LatestVCSWkid(0)

Units: esriMeters

Document Info:

Title: NLCS NCAs and NMs
Author:
Comments:
Subject:
Category:
Keywords: Alaska,Anthropology,Arizona,BLM,boundaries,Bureau of Land Management,California,Colorado,Eastern States,Endangered,environment,Facility,Geology,geoscientificInformation,Geospatial,Idaho,Jurisdiction,location,Management,Montana,National Conservation Areas,National Monuments,Nevada,New Mexico,Oregon,Paleontology,planningCadastre,Public Lands,Recreation,structure,United States,Utah,Vegetation,Western States,Wildlife,Withdrawal,Wyoming
AntialiasingMode: null
TextAntialiasingMode: null

Enable Z Defaults: false

Supports ApplyEdits With Global Ids: true

Support True Curves : true

Only Allow TrueCurve Updates By TrueCurveClients : true

Supports Return Service Edits Option : true

Supports Dynamic Layers: false

Child Resources:   Info   Query Data Elements   Relationships   SharedTemplates

Supported Operations:   Query   Query Contingent Values   QueryDomains   Append   Extract Changes   Get Estimates