ArcGIS REST Services Directory Login | Get Token
JSON | SOAP

Hydrology/IDNR_Biological_Stream_Ratings (MapServer)

View In:   ArcGIS JavaScript   ArcGIS Online Map Viewer   ArcGIS Earth   ArcMap   ArcGIS Pro

View Footprint In:   ArcGIS Online Map Viewer

Service Description:

The Biologically Significant Streams (BSS) map replaces the map by Page et. al (1992). Following the publication of the first Biological Stream Characterization (BSC) ratings (Hite and Bertrand 1989), the Illinois Natural History Survey developed a list of BSS for the purpose of protection 100% of the stream-dependent biodiversity. In 2006, the IDNR initiated an effort to combine and update the previous stream rating efforts (BSC and BSS) into a single rating process. The purpose was not only to update outdated information, but to create a rating system that would help resource managers determine efficacy in implementing the aquatic goals of the Illinois Wildlife Action Plan (http://dnr.state.il.us/orc/wildliferesources/theplan/). All the information that contributed to integrity and diversity ratings were considered in identifying BSS. Specifically, BSS are defined as streams that have a high rating or score based on data from at least two taxonomic groups. This can be achieved by obtaining an A rating either for diversity or for integrity that is based on data from two or more taxonomic groups. A second way to achieve this status is for a stream segment to have class scores in the highest class for at least two different taxonomic groups when considering the combined data from the diversity and integrity ratings. Stream segments identified as biologically significant are unique resources in the state and the biological communities present must be protected at the stream reach, as well as upstream of the reach. Simple, practical constraints were used to extrapolate site-specific information to upstream stream segments to arrive at the final segments identified as biologically significant (see pages 23-24 in Illinois Department of Natural Resources. 2008. Integrating multiple taxa in a biological stream rating system. IDNR-Office of Resource Conservation, Springfield, Illinois, 34 pages).



Map Name: IDNR Biological Stream Ratings

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers: Description: The Biologically Significant Streams (BSS) map replaces the map by Page et. al (1992). Following the publication of the first Biological Stream Characterization (BSC) ratings (Hite and Bertrand 1989), the Illinois Natural History Survey developed a list of BSS for the purpose of protection 100% of the stream-dependent biodiversity. In 2006, the IDNR initiated an effort to combine and update the previous stream rating efforts (BSC and BSS) into a single rating process. The purpose was not only to update outdated information, but to create a rating system that would help resource managers determine efficacy in implementing the aquatic goals of the Illinois Wildlife Action Plan (http://dnr.state.il.us/orc/wildliferesources/theplan/). All the information that contributed to integrity and diversity ratings were considered in identifying BSS. Specifically, BSS are defined as streams that have a high rating or score based on data from at least two taxonomic groups. This can be achieved by obtaining an A rating either for diversity or for integrity that is based on data from two or more taxonomic groups. A second way to achieve this status is for a stream segment to have class scores in the highest class for at least two different taxonomic groups when considering the combined data from the diversity and integrity ratings. Stream segments identified as biologically significant are unique resources in the state and the biological communities present must be protected at the stream reach, as well as upstream of the reach. Simple, practical constraints were used to extrapolate site-specific information to upstream stream segments to arrive at the final segments identified as biologically significant (see pages 23-24 in Illinois Department of Natural Resources. 2008. Integrating multiple taxa in a biological stream rating system. IDNR-Office of Resource Conservation, Springfield, Illinois, 34 pages).

Copyright Text: Illinois Department of Natural Resources - Office of Resource Conservation and the Illinois Natural History Survey

Spatial Reference: 102100  (3857)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info: Supports Dynamic Layers: true

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryLegends   QueryDomains   Find   Return Updates