Metadata: DNR Watersheds - DNR Level 09 - DNR AutoCatchments

DNR Watersheds - DNR Level 09 - DNR AutoCatchments

This page last updated: 03/13/2019
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
  1. Overview
  2. Data Quality
  3. Data Organization
  4. Coordinate System
  5. Attributes
  6. Distribution - Get Data
  7. Metadata Reference

Section 1: Overview

Originator:Minnesota Department of Natural Resources (DNR) - Fish and Wildlife

Title: DNR Watersheds - DNR Level 09 - DNR AutoCatchments

Abstract: This dataset contains watershed catchments generated for Minnesota lakes >= 10 acres and associated stream segments. The DNR AutoCatchments were originally derived through an automated process by MN DNR Fisheries for the Midwest Glacial Lakes Partnership (MGLP) 8-state regional lakes assessment. This dataset was later trimmed to contain only MN catchments, including surrounding catchments that flow into/out of MN to retain hydrologic connectivity. The group layer in Quick Layers includes the lake polygons and stream linear features used in the delineation process.

This dataset is a Level 09 component of the DNR Watersheds Suite of nested, hierarchical watersheds. The DNR AutoCatchments nest generally within the DNR Catchments. (Although an automated process was used, the DNR AutoCatchment polygons were constrained by the DNR Catchment boundaries, and the same input data (hydrologically-conditioned DEM, flow paths, lakes and streams) were used in their delineation. Thus, they are considered to be a compatible layer to the DNR Watersheds Suite.) The DNR Hydrography (Upstream/Downstream) Toolbar works on this DNR AutoCatchments dataset.

(Important Note: Converting this geodatabase feature class into a shapefile will truncate the UPADJ_CAT field, which will cause the DNR Hydrography Toolbar to return incomplete upstream results. DO NOT convert to shapefile if you plan to use the DNR Hydrography Toolbar.)

For more information on DNR Watersheds concepts and terminology, consult the following document:
DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)(DNR_Watershed_Project_History_Methodology_Terminology_Attributes_2009.pdf - location unknown)

Purpose: This dataset represents a general model of the hydrologic flow across the landscape based on topographic elevation and stream connectivity. It is based on the best GIS data available in 2009 (no LiDAR used); no guarantee of real world accuracy is implied. Given these limitations, there are undoubtedly some inaccuracies in the dataset. However, the dataset provides a model of water flow at a smaller resolution than has been previously available, and it can provide insight into site-level analyses for which the standard layers have been too coarse. (Preliminary visual inspections of DNR AutoCatchment boundaries with DNR Catchments and LiDar products look promising.)

Users should note the following:

1) Some inaccuracies are the result of old and/or less than accurate input data (lakes, streams, DEM) and vector-to-raster conversions of data layers that cause misalignment of features. The edges of DNR AutoCatchments (initially raster, converted to vector and smoothed) should be considered as general, not absolute, boundaries.

2) For the purposes of modeling, all catchments are assumed to be connected and contributing to a downstream catchment (i.e., there are no "isolated" or non-contributing catchments). We lack sufficient information about the Ordinary High Water Levels (OHWLs) of most small lakes to determine the elevation at which each catchment may discharge water into a downstream catchment. Thus, for wide applicability, it is safest to assume that all catchments are hydrologically connected to another, at least under some hydrological scenarios. This is consistent with the published DNR Watersheds Suite and standard watershed modeling practices.

3) The flow direction and current status of many small stream features and ditch features is unknown. Flow may be variable, intermittent, and/or even switch directions depending on hydrological conditions. Inaccuracies or uncertainties in flow order may especially be seen in areas with heavy ditching (e.g., NW MN), lots of intermittent features (streams and wetlands), and where there are lots of looping/braiding/disconnected streams (e.g., Eastern MN).

Thus, no great importance should be placed on any individual catchment because the exact route that the water follows (i.e., from catchment to catchment) may be unknown. However, the general pattern of water flow and the final destination where the main volume of water eventually ends up is well represented by this model. For analyses that sum the total upstream catchment contributions to a lake, this shouldn't present much of a problem, as the total upstream watershed area should be accurately represented. However, when trying to interpret individual routes of water flow, please note the limitations of this dataset.

Time Period of Content Date: 11/01/2013

Currentness Reference: Dataset current as of 9/13/12 (v4). Based on 30m DEM input (circa XXXX). This dataset is continually being updated; major revisions will result in a new version (v#).

Progress: Complete

Maintenance and Update Frequency: As needed

Spatial Extent of Data: Statewide, with catchments extending into adjacent states where water contributes to catchments within the Minnesota state boundary.

Bounding Coordinates: -96.813974
-91.023358
49.366273
43.318124

Place Keywords: Minnesota

Theme Keywords: Water, watershed, drainage area, contributing area, hydrologic unit, hydrologic unit level, level 09, HUC, catchment, direct contributing area, sub-watershed, major watershed, minor watershed, basin watershed, lake watershed, hydrology, hydrography, watershed ratio

Theme Keyword Thesaurus:

Access Constraints: Data are unrestricted with regards to access.

Use Constraints: USE AGREEMENT:
- Use of the data are constrained by the Minnesota Department of Natural Resources General Geographic Data License Agreement agreed to at the time of data download from the Minnesota DNR Data Deli distribution portal.


ACKNOWLEDGMENTS:

- As defined in the DNR License Agreement, users of this data must credit the Originator on published maps and analysis.

- The user shall include the Minnesota DNR source data Title (name).

- The user shall include the Minnesota DNR source data Publication Date.<

- For example, Source: DNR Watersheds - DNR Level 09 - DNR AutoCatchments, Originator: Minnesota DNR - Fisheries Publication Date: 9/13/2012).


USE CONSTRAINT COMMENTS:

- See Cartographic Lineage, Logical Consistency, Positional Accuracy, and Currentness Reference for further discussion of data capture.

- The DNR AutoCatchment dataset is specific to the state of Minnesota and is not part of the NRCS Watershed Boundary Dataset (WBD).

- Each DNR AutoCatchment polygon represents the local drainage area (Direct Contributing Area) for the lake or stream it contains. To identify the total upstream watershed for a given lake or stream, the user must consider the total upstream sequence of connected catchments that drain into the lake/stream. Use the DNR Hydrography Toolbar to visualize and map total upstream watersheds.

Contact Person Information: Lyn Bergquist, GIS Data Contact
Minnesota DNR - Fisheries Unit
500 Lafayette Rd
Saint Paul, MN  55155
Phone: 651-259-5189
Email: lyn.bergquist@state.mn.us

Browse Graphic: None available

Associated Data Sets: This dataset was created to be compatible with DNR Watersheds - DNR Level 08 - DNR Catchments (from the DNR Watersheds Suite)

Section 2: Data Quality

Attribute Accuracy:

Logical Consistency: These DNR AutoCatchment data are topologically correct, all polygons are closed and lines intersect where intended.

Completeness: These data are published as of 11/01/13 (v4).

Horizontal Positional Accuracy: No quantitative studies of horizontal positional accuracy exist for the data. The DNR AutoCatchments were created by an automated process using currently available GIS tools and customized programs. There was a significant amount of human interaction applied to create the upstream chaining of catchments. A lot of QA/QC has been done on these catchments and they are generally pretty good. However, we continue to work on refining these watersheds (correcting errors, fixing gaps/slivers, etc.) The availability of LiDAR offers more opportunities for us to update this dataset.

Please report errors/problems to Contact (above).

Vertical Positional Accuracy: No quantitative studies of vertical positional accuracy exist for the data.

Lineage: This dataset was originally produced for use by the Midwest Glacial Lakes Partnership (MGLP) to assess landscape stressors and impacts on lakes 10 acres and greater within the formerly glaciated areas of an 8-state region (ND/SD/MI/WI/IA/IL/IN/MI). Assessment results for the 8-state MGLP region should be available in 2012.

The DNR Catchment (Level 8) boundaries and DNR Flow Network were integral in creating this product and assuring compatibility with the DNR Watersheds Suite. This results in a product that generally nests within existing DNR Catchments, other DNR derived watershed layers and Federal WBD (Watershed Boundary Dataset) HUC watersheds. The 1st 7 digits of the CATCH_ID matches the CATCH_ID in the DNR Catchments layer, with some exceptions. (Note: Some CATCH_IDs had to be truncated in order to not exceed the 255-char limit in field [UPADJ_CAT] in the shapefile form of this dataset.)

Section 3: Spatial Data Organization (not used in this metadata)


Section 4: Coordinate System

Horizontal Coordinate Scheme: Universal Transverse Mercator

UTM Zone Number: 15

Horizontal Datum: NAD83

Horizontal Units: meters

Vertical Datum: not applicable

Vertical Units: Not Applicable

Depth Datum: not applicable

Depth Units: Not Applicable

Section 5: Attributes

Overview:

Detailed Citation: The concepts used in development of the DNR Watershed Suite are described in detail in the following document:

DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
(DNR_Watershed_Project_History_Methodology_Terminology_Attributes_2009.pdf)

Table Detail:
dnr_watersheds_dnr_level_09_auto_catchments (.gdb table) - feature class table
Field NameValid ValuesDefinitionDefinition Source
STATEenumeratedState in which the catchment is located
CNCanada
IAIowa
MNMinnesota
NDNorth Dakota
SDSouth Dakota
WIWisconsin
BORDER
-
If a catchment crosses the boundaries of two states, both are listed; otherwise, same as STATE
LAKE_ID
-
Minnesota DNR Division of Waters unique lake and wetland identification number for basins of Public Waters. (Same as DOWLKNUM)
CATCH_ID
-
Unique Catchment ID
CATCH_TYPEenumerated
LAKECatchment contains a lake >= 10 acres (must have a LAKE_ID)
STREAMCatchment contains stream(s) only (no lake >= 10 acres; no Lake_ID)
RIVERCatchment contains a river polygon only (no lake >= 10 acres;no Lake_ID)
CATCH_POSenumerated
HEADWATERCatchment has a downstream catchment but no upstream catchment(s)
INTERMEDIATECatchment has both downstream and upstream catchment(s)
TERMINALCatchment has no downstream catchment (is at the terminal end of
DOWN_CAT
-
Unique Catchment ID of immediate downstream (receiving) catchmentDNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
UPADJ_CAT
-
Unique Catchment ID(s) of immediate upstream (contributing) catchment(s)DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
HUC12_ID
-
USGS 12-digit HUC code for HUC12-level watershedUSGS Watershed Boundary Dataset (WBD)
MAJenumeratedMNDNR Major Watershed ID (DNR Level 4 - HUC08 - Majors)DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
1-5, 7-44, 46-63, 65-84Valid Maj #'sDNR Watershed Suite
6, 45, 64Not Valid Maj #'sDNR Watershed Suite
CAT_LINKenumeratedA catchment that links one DNR Major Watershed to another (arrow indicates direction of flow)
INLET YY<--XXCatchment is an inlet (e.g., MAJ YY receives water from MAJ XX)
OUTLET XX-->YYCatchment is an outlet (e.g., MAJ XX contributes water to MAJ YY)
ACRES
-
Area of catchment polygon in acres.Calculated in GIS.
PERIM_FT
-
Perimeter of catchment polygon in feet.Calculated in GIS.
UTM_CTR_X
-
UTM X coordinate of catchment polygon center.Calculated in GIS.
UTM_CTR_Y
-
UTM Y coordinate of catchment polygon center.Calculated in GIS.
DATE_STAMP
-
Features are current as of this date.
UPSUM_AC
-
Total Acres of all upstream contributing catchments to this individual catchment.DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
DOWLKNUM
-
Minnesota DNR Division of Waters unique lake and wetland identification number for basins of Public Waters. (Not yet implemented.)DNR EWR Lakes DB
CATCH_AC
-
Area of catchment polygon in acres; rounded integer version of ACRES. (Not yet implemented.)DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
LAKE_AC
-
Area of lake polygon in acres; only for CATCH_TYPE = 'LAKE'. Lake area represents for Public Waters Ordinary High Water Level (not for visible Open Water).DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
TOT_RATIO
-
Total upstream watershed area to lake area ratio. TOT_RATIO = [UPSUM_AC/LAKE_AC]DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
DCA_RATIO
-
Individual catchment area where lake exists (DCA, Direct Contributing Area) to lake area ratio. DCA_RATIO = [CATCH_AC/LAKE_AC]DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
LK_RATIO
-
Total upstream non-lake (land + wetlands) area to lake area ratio. LK_RATIO = ( [UPSUM_AC - PW_AC]/LAKE_AC]) (Not yet implemented.)DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
STO_RATIO
-
Total upstream land (non-wetland, non-lake) area to lake area ratio. STO_RATIO = [UPSUM_AC - NWI_AC]/LAKE_AC] (Not yet implemented.)DNR Watershed Delineation Project: History, Methodology, Terminology & Data Attribution (PDF)
PUBLISH_DATE
-
Date that the polygon features were last updated and republished.

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources (DNR)

Publication Date: 201311101

Contact Person Information: Zeb Thomas, GIS Data Systems Coordinator
Minnesota DNR - GIS
500 Lafayette Rd
Saint Paul, MN  55155
Phone: 651-259-5637
Email: zeb.thomas@state.mn.us

Distributor's Data Set Identifier: geos_dnr_watersheds_auto_catchments.gdb\dnr_watersheds_dnr_level_09_auto_catchments

Distribution Liability: The Minnesota Department of Natural Resources General Geographic Data License Agreement is online: http://www.dnr.state.mn.us/sitetools/data_software_license.html

Ordering Instructions: Please visit the download page for this dataset on the Minnesota Geospatial Commons website using the web link below (Online Linkage).

Online Linkage: I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7: Metadata Reference

Metadata Date: 03/13/2019

Contact Person Information: Lyn Bergquist, GIS Data Contact
Minnesota DNR - Fisheries Unit
500 Lafayette Rd
Saint Paul, MN  55155
Phone: 651-259-5189
Email: lyn.bergquist@state.mn.us

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2



This page last updated: 03/13/2019
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