Name: TIER_II_MBSS_STATION

Display Field: SITEYR

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This dataset consists of a subset of the Maryland Biological Stream Survey (MBSS) sites sampled by the Maryland Department of Natural Resources Monitoring and Non-tidal Assessment (MANTA) Division. The subset of MBSS stations within this shapefile represents the official list of all Maryland Biological Stream Survey (MBSS) sites sampled that were used for Tier II (high quality) stream segment designations as determined by the Maryland Department of the Environment (MDE), the regulatory agency responsible for identification and listing of Maryland's Tier II waters. All MBSS sites, including the ones in this subset, were sampled using similar protocols. MBSS sampling locations were generally chosen using a stratified random design with respect to stream order. These stations usually have an '-R-' designation in their site name that stands for 'random'. However, some sites included in this subset have other designations, most notably '-S-' for sentinel sites which are sampled every year for trend analysis and '-A-' sites which were sampled in a targeted fashion specifically for the purpose of identifying additional Tier II stream segments. Other sites included in this subset also include '-C-', '-T-, '-E-', and '-X-' sites that were also sampled using a targeted approach for various purposes. Regardless of the original intent, any MBSS sampling location can be potentially used for Tier II stream designation. At each site in the spring, benthic macroinvertebrates are collected within a 75 meter segment and later identified in a lab. Later, in the summer of the same year (for a single site), fish are collected from the same 75 meter segment and identified onsite. Using the species assemblages collected from these two communities (benthos and fish), a Benthic Index of Biotic Integrity (BIBI) and a Fish Index of Biotic Integrity (FIBI) are calculated. These indices are then used to infer information about local water quality. Thus, these IBIs are also used for Tier II stream segment designation. If the arithmetic mean of all IBIs calculated on a stream segment are greater than or equal to 4.00, then the segment is designated as a Tier II stream segment. This shapefile includes all MBSS sites that were used for Tier II designation up through January of 2010. The MBSS sites themselves were sampled from 1995 - 2009. For more information on MBSS sampling protocols please consult the Round 3 MBSS Sampling manual on the Maryland Department of Natural Resources website at: <http://www.dnr.state.md.us/streams/pubs/ea-07-01b_fieldRevMay2007.pdf>

Service Item Id: d70f49b04643449c84c8eef6ee4be591

Copyright Text: The Maryland Department of the Environment would like to acknowledge that this dataset was provided to MDE by the Maryland Dept of Natural Resources MANTA section, Maryland Biological Stream Survey.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 1319468.4374710023
YMin: 373152.86459866166
XMax: 1386544.8437414765
YMax: 493985.5520711988
Spatial Reference: 102685  (2248)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSMSCircle
Color: [50, 64, 173, 255]
Size: 4.0
Angle: 0.0
XOffset: 0
YOffset: 0
Outline:
[0, 0, 0, 255] Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
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 Current User: true

HasZ: true

HasM: true

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• SITEYR ( type: esriFieldTypeString, alias: SITEYR, length: 254 )
• BIBI_05 ( type: esriFieldTypeDouble, alias: BIBI_05 )
• FIBI_05 ( type: esriFieldTypeDouble, alias: FIBI_05 )
• ACREAGE ( type: esriFieldTypeDouble, alias: ACREAGE )
• LAT ( type: esriFieldTypeDouble, alias: LAT )
• LONG_ ( type: esriFieldTypeDouble, alias: LONG_ )
• T2_SGMT_ID ( type: esriFieldTypeString, alias: T2_SGMT_ID, length: 50 )
• IMPRT_DATE ( type: esriFieldTypeDate, alias: IMPRT_DATE, length: 8 )
• SHAPE ( type: esriFieldTypeGeometry, alias: Shape )

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

  Iteminfo   Thumbnail   Metadata