Name: Trails: Historical vs. 2080 Bankfull Flow

Display Field: TRAIL_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Percent change in bankfull flow between historical data and 2080 projections for trail segments within 90 m of streams. Climate change is projected to alter the flow regimes of streams and rivers, with consequences for physical processes, aquatic organisms, and water resource management. To study these hydrologic changes, we have developed a database of flow metrics for streams in the western US under historical conditions and climate change scenarios. These are based on daily simulations of the Variable Infiltration Capacity (VIC) macroscale hydrologic model produced by the University of Washington Climate Impacts Group. The US Forest Service Rocky Mountain Research Station used these model outputs to calculate a set of summary flow metrics to describe key attributes of the flow regime for each stream segment in the 1:100,000 scale National Hydrography Dataset (NHDPlus version 2, September 2012 snapshot) in the western US. Datasets are available for the historical period (1977-2006), the 2040s, and the 2080s. Future datasets (2040s and 2080s) are based on the ensemble mean of ten global climate models associated with the A1B emissions scenario. Please see the User Guide for more information and important caveats on appropriate use. https://www.fs.fed.us/rm/boise/AWAE/projects/modeled_stream_flow_metrics.shtml The TrailNFS_Publish Layer is designed to provide information about National Forest System trail locations and characteristics to the public. It describes trail locations, basic characteristics of the trail, and where and when various trail uses are prohibited, allowed and encouraged. Because the data readiness varies between Forests, each Forest approves which level of attribute subset are published for that forest. Forests can provide no information or one of three attribute subsets describing trails. The attribute subsets include TRAILNFS_CENTERLINE which includes the location and trail name and number; TRAILNFS_BASIC which adds information about basic trail characteristics; and TRAILNFS_MGMT which adds information about where and when users are prohibited, allowed, and encouraged. When a Forest chooses to provide the highest attribute subset, TRAILNFS_MGMT, these attributes must be consistent with the Forest's published Motorized Vehicle Use Map (MVUM).

Copyright Text: U.S. Forest Service; Wenger, S.J., C.H. Luce, A.F. Hamlet, D.J. Isaak, and H.M Neville. 2010. Macroscale hydrologic modeling of ecologically relevant flow metrics. Water Resources Research. 46: W09513. doi:10.1029/2009WR008839.

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• TRAIL_NO ( type: esriFieldTypeString, alias: TRAIL_NO, length: 30 )
• TRAIL_NAME ( type: esriFieldTypeString, alias: TRAIL_NAME, length: 30 )
• TRAIL_TYPE ( type: esriFieldTypeString, alias: TRAIL_TYPE, length: 5 )
• TRAIL_CN ( type: esriFieldTypeString, alias: TRAIL_CN, length: 34 )
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• ATTRIBUTESUBSET ( type: esriFieldTypeString, alias: ATTRIBUTESUBSET, length: 50 )
• NATIONAL_TRAIL_DESIGNATION ( type: esriFieldTypeInteger, alias: NATIONAL_TRAIL_DESIGNATION )
• TRAIL_CLASS ( type: esriFieldTypeString, alias: TRAIL_CLASS, length: 1 )
• ACCESSIBILITY_STATUS ( type: esriFieldTypeString, alias: ACCESSIBILITY_STATUS, length: 40 )
• TRAIL_SURFACE ( type: esriFieldTypeString, alias: TRAIL_SURFACE, length: 40 )
• SURFACE_FIRMNESS ( type: esriFieldTypeString, alias: SURFACE_FIRMNESS, length: 20 )
• TYPICAL_TRAIL_GRADE ( type: esriFieldTypeString, alias: TYPICAL_TRAIL_GRADE, length: 20 )
• TYPICAL_TREAD_WIDTH ( type: esriFieldTypeString, alias: TYPICAL_TREAD_WIDTH, length: 30 )
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• TYPICAL_TREAD_CROSS_SLOPE ( type: esriFieldTypeString, alias: TYPICAL_TREAD_CROSS_SLOPE, length: 10 )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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