Parent Layer: Trails

Name: BLM Trails

Display Field: ROUTE_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: WHAT: This dataset contains line features representing trails managed by the Bureau of Land Management (BLM) across the State of Colorado, along with trails managed by Mesa County and the Old Spanish Trail. The layer is a filtered subset of the broader BLM trails dataset, queried by managing unit to show only BLM, Mesa County, and Old Spanish Trail records. Coverage is statewide — not limited to Grand Junction or Mesa County — and reflects conditions as of the City's 2023 refresh.SOURCE & METHODOLOGY: Source records originate from the Bureau of Land Management's Geospatial Business Platform Open Data Portal. The City of Grand Junction GIS Division first added the dataset to the City's database in 2003 and has periodically refreshed it from the BLM source. Records are entered manually into the SDE and filtered by managing unit to include only BLM trails, Mesa County trails, and the Old Spanish Trail. The City does not create or edit trail geometry — the BLM is the authoritative source. No City-side QA process is performed between refreshes.KEY ATTRIBUTES: MANAGING_U identifies the managing unit responsible for each trail segment (used as the filter for this layer). ROUTE_NAME identifies the trail by name. SURFACE indicates the trail surface type (e.g., dirt, gravel, paved). MILES records the trail segment's distance in miles. Many other fields in the schema are inherited from the BLM source; some are empty, and some of the important fields are only partially populated depending on what the BLM has documented for each trail.UPDATE CYCLE: Historically updated on a yearly cycle by the GIS Division, though no update is currently scheduled. Last updated in 2023. Any future update would pull the current BLM state and re-apply the managing-unit filter.KNOWN LIMITATIONS: This dataset is a filtered subset of the BLM's Colorado-wide trails data and reflects only trails whose managing unit is the BLM, Mesa County, or the Old Spanish Trail. Trails managed by other agencies (National Forest Service, National Park Service, Colorado Parks and Wildlife, private landowners, or municipal parks) are not included and require separate datasets. Positional accuracy is inherited from the BLM source and is intended for visual representation rather than survey-grade or navigational use — users should not rely on this data for wayfinding, backcountry navigation, or legal boundary determination. The City's copy has not been updated since 2023, so trails opened, rerouted, closed, or reclassified since then will not be reflected until the layer is refreshed. Many attribute fields are empty or partially populated based on what the BLM has documented; absence of a value should not be interpreted as meaningful information about the trail. The layer is statewide in extent — users doing local analysis should filter to Mesa County or Grand Junction as appropriate.CONTACT: City of Grand Junction GIS Division. For data questions or to report errors in the City's copy, email gis@gjcity.org. For authoritative trail data, corrections to trail geometry or attributes, or questions about trail status and access, users should consult the Bureau of Land Management directly.

Service Item Id: 19408163c97c4152b7c95ed854e26e1b

Copyright Text: Source data: U.S. Bureau of Land Management (BLM), Geospatial Business Platform Open Data Portal. Filtered to BLM-managed trails, Mesa County-managed trails, and the Old Spanish Trail; maintained by the City of Grand Junction GIS Division.

Default Visibility: true

Max Result Window: N/A

Max Record Count: 2000

Standard Max Record Count No Geometry: 32000

Max Record Count Factor: 1

Standard MaxRecord Count: 8000

Tile Max Record Count: 4000

MaxSelectionCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 500000.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: true

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 661204.2894000001
YMin: 4100742.9290999994
XMax: 1298005.8315000003
YMax: 4563313.288000001
Spatial Reference: 32612  (32612)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSLSSolid
Color: [255, 170, 0, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:
Label Placement: esriServerLinePlacementAboveAlong
Label Expression: [ROUTE_NAME]
Use Coded Values: true
Symbol:
Color: [115, 76, 0, 255]
Background Color: N/A
Outline Color: N/A
Vertical Alignment: bottom
Horizontal Alignment: center
Right to Left: false
Angle: 0
XOffset: 0
YOffset: 0
Size: 8
Font Family: Arial
Font Style: normal
Font Weight: bold
Font Decoration: none

Min. Scale: 18000.0
Max. Scale: 0.0

Feature Draw Order:

N/A

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports Result Pagination Token: false
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Cache Hint: false
Supports Query With Current User: true
Supports Query With Result Type: true

HasZ: false

HasM: false

Has Attachments: false

Has Last Edit Time: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: N/A

Fields:

• OBJECTID ( nullable: false, alias: OBJECTID, type: esriFieldTypeOID )
• ROUTE_NO ( nullable: true, length: 10, alias: Route Number, type: esriFieldTypeString )
• MANAGING_U ( nullable: true, length: 30, alias: Manager, type: esriFieldTypeString )
• USE_ ( nullable: true, length: 52, alias: Use, type: esriFieldTypeString )
• ROUTE_NAME ( nullable: true, length: 52, alias: Name, type: esriFieldTypeString )
• WIDTH ( nullable: true, length: 20, alias: Width, type: esriFieldTypeString )
• SURFACE ( nullable: true, length: 20, alias: Surface, type: esriFieldTypeString )
• TYPE ( nullable: true, length: 100, alias: Type, type: esriFieldTypeString )
• OPEN_ ( nullable: true, length: 50, alias: Status, type: esriFieldTypeString )
• MILES ( nullable: true, alias: Miles, type: esriFieldTypeDouble )
• USE_CLASS ( nullable: true, length: 50, alias: Use Class, type: esriFieldTypeString )
• seasonal_c ( nullable: true, length: 50, alias: Seasonal Closure, type: esriFieldTypeString )
• difficulty ( nullable: true, length: 30, alias: Difficulty, type: esriFieldTypeString )
• GlobalID ( nullable: false, length: 38, alias: GlobalID, type: esriFieldTypeGlobalID )
• Shape ( nullable: true, alias: Shape, type: esriFieldTypeGeometry )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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