This is a Non-Federal dataset covered by different Terms of Use than

Statewide Altered Watercourse Project

Metadata Updated: April 10, 2015

The Altered Watercourse Project was a joint effort between the Minnesota Pollution Control Agency (MPCA) and Minnesota Geospatial Information Office (MnGeo) to create a statewide inventory of streams that have been hydrologically altered (e.g. channelized, ditched or impounded). The dataset was created to support MPCA's water quality monitoring and assessment program and provides information about stream habitats that have been compromised through such alteration. The project entailed digitization of Geographic Information System (GIS) 'events' on to the United States Geological Survey's National Hydrography Dataset (NHD) stream linework. The events were then categorized as one of four types: Altered, Natural, Impounded or No definable channel, based upon a standardized methodology and criteria. These categorizations were performed manually by GIS technicians using visible interpretation of multiple years of aerial photography, LiDAR (Light Detection And Ranging)-based elevation data, and various other reference data in ArcGIS 10.0.

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than License: No license information was provided.

Downloads & Resources


Metadata Date December 5, 2013
Metadata Created Date June 13, 2014
Metadata Updated Date April 10, 2015
Reference Date(s) June 30, 2013 (publication)
Frequency Of Update unknown

Metadata Source

Harvested from Minnesota Geospatial Information Office

Additional Metadata

Resource Type Dataset
Metadata Date December 5, 2013
Metadata Created Date June 13, 2014
Metadata Updated Date April 10, 2015
Reference Date(s) June 30, 2013 (publication)
Responsible Party Minnesota Pollution Control Agency (Point of Contact)
Contact Email
Access Constraints Use Constraints: None, but users should consult the project methodology document for an understanding of the derivation, uses and limitations of the data set., Access Constraints: None
Bbox East Long -89.53
Bbox North Lat 49.37
Bbox South Lat 43.5
Bbox West Long -97.23
Coupled Resource
Frequency Of Update unknown
Graphic Preview Description JPG format
Graphic Preview File
Harvest Object Id a6b3d62c-c0c1-4bd1-9b8c-777e1ccd7c29
Harvest Source Id 526b774b-2dbe-4b61-91f5-8e3e020b9bce
Harvest Source Title Minnesota Geospatial Information Office
Licence NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Minnesota Pollution Control Agnecy for its own internal business purposes. The Minnesota Pollution Control Agency does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, the GIS Data must include a copy of this disclaimer.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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