Name: All Catchment Boundaries

Display Field: COMID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>The Chesapeake Bay Program has a goal of maintaining the long-term health of watersheds identified as healthy by its partner jurisdictions. Quantitative indicators are important to assess current watershed condition, track future condition, and assess the vulnerability of these watersheds to future degradation. Building upon the U.S. Environmental Protection Agency (EPA) Preliminary Healthy Watershed Assessment (PHWA) framework, project analysts assembled and evaluated a set of candidate metrics characterizing multiple aspects of landscape condition, hydrology, geomorphology, habitat, biological condition, and water quality, for integration into an overall watershed health index. Geospatial analyses were structured, where possible, to leverage data from EPA StreamCat, the National Fish Habitat Partnership, the Chesapeake Bay model for nutrient loads, and other regional data sources. A set of vulnerability metrics were derived representing aspects of land use change, water use, wildfire risk, and climate change. Metric values were compiled for the nearly 84,000 NHDPlus catchments Bay-wide, and were used to assess conditions and vulnerability within the catchments associated with the current set of state-identified healthy watersheds. These indicators will be available to federal, state, and local managers as a geospatial tool, providing critical information for maintaining watershed health. The Chesapeake Healthy Watersheds Assessment provides a framework for tracking condition at future intervals, integrating new data that become available.</SPAN></SPAN></P></DIV></DIV></DIV>

Service Item Id: be86b6db7fc148ff964ee57f85c9935b

Copyright Text: Christopher Wharton Nancy Roth Sam Sarkar Brian Pickard, Ph.D. Ann Roseberry Lincoln Tetra Tech, Inc

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Supported Query Formats: JSON, geoJSON, PBF

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Extent:

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YMin: 4393103.015900001
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Spatial Reference: 102100  (3857)

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• COMID ( type: esriFieldTypeInteger, alias: COMID )
• HWUniqID ( type: esriFieldTypeString, alias: Healthy Watersheds Unique ID, length: 8000 )
• HWFlag ( type: esriFieldTypeInteger, alias: Healthy Watersheds Flag )
• HWGroup ( type: esriFieldTypeString, alias: Healthy Watersheds Group, length: 8000 )
• State ( type: esriFieldTypeString, alias: State, length: 8000 )
• County ( type: esriFieldTypeString, alias: County, length: 8000 )
• PctNaturalLandWs ( type: esriFieldTypeDouble, alias: % Natural Land Cover (% Forest + % Wetland) )
• PctForestRZWs ( type: esriFieldTypeDouble, alias: % Forest Cover in the Riparian Zone )
• PopDensityWs ( type: esriFieldTypeDouble, alias: Mean Population Density (people/sq. km) )
• HousingUnitDensWs ( type: esriFieldTypeDouble, alias: Housing Unit Density (housing/sq. km) )
• MineDensityWs ( type: esriFieldTypeDouble, alias: Mine Density (mines/sq. km) )
• AvgPctForestLossWs ( type: esriFieldTypeDouble, alias: % Forest Cover Loss Relative to Pre-development Forest Cover )
• MngdTurfHCZWs ( type: esriFieldTypeDouble, alias: % Managed Turf Grass )
• LandCondSubindex ( type: esriFieldTypeDouble, alias: Landscape Condition Sub-index )
• DamDensityWs ( type: esriFieldTypeDouble, alias: Dam Density (dams/sq. km) )
• PctImpRZWs ( type: esriFieldTypeDouble, alias: % Impervious in Riparian Zone )
• PctVulnGeoWs ( type: esriFieldTypeDouble, alias: % Vulnerable Geology in Watershed )
• GeomorphologySubindex ( type: esriFieldTypeDouble, alias: Geomorphology Sub-index )
• PctAgOnHydricSoilWs ( type: esriFieldTypeDouble, alias: % Agriculture On Hydric Soil in Watershed )
• PctForestWs ( type: esriFieldTypeDouble, alias: % Forest in Watershed )
• PctForestRemaining ( type: esriFieldTypeDouble, alias: % Forest Remaining )
• PctWetlandRemaining ( type: esriFieldTypeDouble, alias: % Wetlands Remaining )
• PctImpWs ( type: esriFieldTypeDouble, alias: % Imperviousness in Watershed )
• RoadStreamXingDens ( type: esriFieldTypeDouble, alias: Road Stream Crossings Density (crossings/sq.km) )
• PctWetlandsWs ( type: esriFieldTypeDouble, alias: % Wetlands in Watershed )
• HydrologySubindex ( type: esriFieldTypeDouble, alias: Hydrology Sub-index )
• PctNatlConnectivity ( type: esriFieldTypeDouble, alias: % Natural Connectivity (Nature's Network Conservation Habitats) )
• HabConditionIndexLC ( type: esriFieldTypeDouble, alias: Fish Habitat Condition Index: Local Catchment )
• HabitatSubindex ( type: esriFieldTypeDouble, alias: Habitat Sub-index )
• OutletAqCondnScore ( type: esriFieldTypeDouble, alias: Outlet Aquatic Condition Score - Index of Catchment Integrity )
• BioCondSubindex ( type: esriFieldTypeDouble, alias: Biological Condition Sub-index )
• Pct303dImpairedCat ( type: esriFieldTypeDouble, alias: % Impaired Streams within Catchment )
• SPARROWTN ( type: esriFieldTypeDouble, alias: SPARROW - Total Nitrogen (lbs/ac/yr) )
• CBPModAGN ( type: esriFieldTypeDouble, alias: Nitrogen Load Agricultural Sources (lbs/ac) )
• CBPModAGP ( type: esriFieldTypeDouble, alias: Phosphorus Load Agricultural Sources (lbs/ac) )
• CBPModAGS ( type: esriFieldTypeDouble, alias: Sediment Load Agricultural Sources (lbs/ac) )
• CBPModCSON ( type: esriFieldTypeDouble, alias: Nitrogen Load CSO Sources (lbs/ac) )
• CBPModCSOP ( type: esriFieldTypeDouble, alias: Phosphorus Load CSO Sources (lbs/ac) )
• CBPModCSOS ( type: esriFieldTypeDouble, alias: Sediment Load CSO Sources (lbs/ac) )
• CBPModDEVN ( type: esriFieldTypeDouble, alias: Nitrogen Load Development Sources (lbs/ac) )
• CBPModDEVP ( type: esriFieldTypeDouble, alias: Phosphorus Load Development Sources (lbs/ac) )
• CBPModDEVS ( type: esriFieldTypeDouble, alias: Sediment Load Development Sources (lbs/ac) )
• CBPModSEPN ( type: esriFieldTypeDouble, alias: Nitrogen Load Septic Sources (lbs/ac) )
• CBPModWWN ( type: esriFieldTypeDouble, alias: Nitrogen Load Wastewater Sources (lbs/ac) )
• CBPModWWP ( type: esriFieldTypeDouble, alias: Phosphorus Load Wastewater Sources (lbs/ac) )
• CBPModWWS ( type: esriFieldTypeDouble, alias: Sediment Load Wastewater Sources (lbs/ac) )
• WaterQualitySubindex ( type: esriFieldTypeDouble, alias: Water Quality Sub-index )
• Health_Index ( type: esriFieldTypeDouble, alias: Health Index Overall Score )
• PctForestLoss ( type: esriFieldTypeDouble, alias: % Average Forest Loss )
• PctProtLandsWs ( type: esriFieldTypeDouble, alias: % Protected Lands )
• FutureDev ( type: esriFieldTypeDouble, alias: % Increase in Development (projected through 2050) )
• Brook_Trout_Occur_Current ( type: esriFieldTypeDouble, alias: % Current Probability of Brook Trout Occurrence )
• Brook_Trout_Occur_6CTempChang ( type: esriFieldTypeDouble, alias: % Probability of Brook Trout Occurrence @ 6 deg. C Increase in Water Temperature )
• ClimateStress ( type: esriFieldTypeDouble, alias: Climate Stress (Habitat) )
• DomesticWaterUse ( type: esriFieldTypeDouble, alias: Domestic Water Use (mil gal/day) )
• IndustrialWaterUse ( type: esriFieldTypeDouble, alias: Industrial Water Use (mil gal/day) )
• AgWaterUse ( type: esriFieldTypeDouble, alias: Agricultural Water Use (mil gal/day) )
• WildfireRiskUrbInterface ( type: esriFieldTypeDouble, alias: % Wildfire Risk )
• HUC12_ID ( type: esriFieldTypeString, alias: HUC12 ID, length: 12 )
• HUC12_Acres ( type: esriFieldTypeDouble, alias: HUC12 Acres )
• HUC12_DS ( type: esriFieldTypeString, alias: HUC12 Downstream, length: 12 )
• HUC12_Name ( type: esriFieldTypeString, alias: HUC12 Name, length: 80 )
• HUC12_Type ( type: esriFieldTypeString, alias: HUC12 Type, length: 1 )
• Headwater ( type: esriFieldTypeString, alias: Headwater, length: 255 )
• CatchmentArea_sqkm ( type: esriFieldTypeDouble, alias: Area (sq. km) )
• StateFIPS ( type: esriFieldTypeInteger, alias: StateFIPS )
• CountyFIPS ( type: esriFieldTypeInteger, alias: CountyFIPS )
• FIPS ( type: esriFieldTypeInteger, alias: FIPS )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

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

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