Metadata: DNR Watersheds - DNR Level 08 - All Catchments

DNR Watersheds - DNR Level 08 - All Catchments

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

Title: DNR Watersheds - DNR Level 08 - All Catchments

Abstract: Back to main DNR Watershed Suite metadata page

These data consists of over 10,000 watershed polygon delineations in one seamless dataset of drainage areas called Minnesota Department of Natural Resources (DNR) Catchments. The DNR Catchment dataset extends into adjacent states where water flows into Minnesota and or where the DNR Catchment extends across the state boundary.


Minnesota DNR Catchments are the smallest delineated and digitized drainage area mapped by the Minnesota DNR Watershed Delineation Project. The overall goal of this mapping effort is to produce the best watershed delineations available that reflect the current hydrology of the landscape as interpreted from as many data sources necessary to derive acceptable catchment delineations. Minnesota DNR Catchments are delineated from the perspective of hydrologists who refrained from allowing cartography to drive the delineation linework. This was accomplished by excluding political boundaries and cartographic esthetics during the delineation procedure, focusing instead, on landscape hydrology.


Minnesota DNR Catchments contain all of the land area (including all water features), upstream from, or between DNR Pour Points. Therefore, Minnesota DNR Catchments are not scale dependant. There is no size limit as to how large or small the delineation may be, an individual DNR Catchment in the dataset may represent the drainage area of a 1-acre prairie wetland or a 100-acre recreational lake.


For a more detailed background on this data, follow this link to the DNR Watershed Project: History, Methodology, Terminology, Attributes 2009(DNR_Watershed_Project_History_Methodology_Terminology_Attributes_2009.pdf - location unknown) document (PDF). This document may take a few moments to load for viewing.

Purpose: Developed using GIS technology and modern delineation techniques to create a base-watershed dataset, these new DNR Catchment delineations will facilitate projects related to hydrology and hydraulic design, watershed assessment, water quality and clarity, fish and wildlife management, planning activities, and GIS analysis. Used alone or as a system of upstream - downstream drainage areas, Minnesota DNR Catchments define the elementary drainage 'building blocks' used to create watersheds and hydrologic units of varying sizes from site-specific and localized projects to regional studies associated with small scale map information.


The upstream - downstream relationship of the DNR Catchment polygons is maintained in the dataset attributes. For example, Minnesota DNR Catchments with upstream contributing catchments aggregate upwards within a DNR watershed hierarchal classification system to define hydrologic units of larger sizes. In particular, Minnesota DNR Catchments share coincident boundaries that combine to define Minnesota DNR Basin Watersheds, Minnesota DNR Minor Watersheds and Minnesota DNR Major Watersheds. Minnesota DNR Catchments can also be combined to define Minnesota DNR Level 01-HUC 1 through Minnesota DNR Level 12-HUC 12 watersheds. The Minnesota DNR Catchment dataset is the maintenance version of watershed delineations in Minnesota.


Time Period of Content Date: 1998 - Present

Currentness Reference: Data have been tested for completeness and attribute coding correctness. Data vary widely as to their currentness.

Initial work on this dataset began in July 1998 and continued through July 2008. Additional catchment delineations, updates and general data maintenance continue on a regular basis. Theses manually derived, human interpreted, watershed delineations were created from a sophisticated methodology that incorporated information from as many as 30 different datasets, sources of information and field review. Primary datasets that had the most influence on catchment delineations were 1991 ? 1-meter ground resolution USGS digital orthophoto quadrangle (DOQ) photography, 2003-2004 ? 1-meter ground resolution FSA DOQ series photography, Minnesota DNR hydrologically corrected DEMs and 1:24,000 scale USGS Digital Raster Graphics (DRGs).


The principle basemap for watershed arc delineation alignment is the 24 K DRGs. DRGs are a scanned version of the USGS 1:24,000-scale, 7.5 minute topographic quadrangle maps. Topographic feature content of the original USGS quadrangle maps were interpreted by using stereophotographs from the National Aerial Photography Program. Like the 7.5 minute topographic quadrangle maps, DRGs are a static cartographic representation of the landscape locked in time when the off-site topographic interpretation was made. In fact, a large portion of Minnesota is covered by 1:24,000-scale, 7.5-minute topographic quadrangle maps that are 30 years old and older. Select Topo-Maps have been updated as part of the USGS Revision Program for 7.5-Minute Topographic Maps. Due to the high cost of production, contours are not usually revised under the revision program.


To overcome the deficiencies of the DRG contours, the delineation methodology utilizes as many as 30 other sources of data and information during the delineation procedure to improve the discrepancies of the DRGs. As a result, a review of Minnesota DNR Catchment data, as compared exclusively to DRGs, may appear to conflict with the cartographic topography illustrated by the contours.


Progress: In work

Maintenance and Update Frequency: Quarterly

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

Bounding Coordinates: -98
-89.4
49.5
43.1

Place Keywords: Minnesota

Theme Keywords: Water, watershed, drainage area, contributing area, hydrologic unit, hydrologic unit level, level 08, 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 08 - All Catchments, Originator: Minnesota DNR - Division of Waters - Watershed Delineation Project, Publication Date: 4/7/2009).


USE CONSTRAINT COMMENTS:

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


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


- As a whole, DNR Catchment delineations do not represent DNR Lake Watersheds. Individual DNR Catchments are not lake watersheds (lakesheds) unless the DNR Catchment is a DNR Headwaters Catchment.

Contact Person Information: Sean Vaughn, GIS Hydrologist
Minnesota DNR - Division of Waters
800 Oak Savanna Lane SW
Cambridge, MN  55088
Phone: 763-689-7106
Fax: 763-689-7120
Email: sean.vaughn@state.mn.us

Browse Graphic: None available

Associated Data Sets:

Section 2: Data Quality

Attribute Accuracy:

Logical Consistency: Catchment data were digitized heads-up in ArcView 3.3 as polyline shapefiles. These data were then incorporated into Arc/INFO 7.0.3 for data scrubbing and attribute assembly. An initial ARC CLEAN was run on the data with a fuzzy tolerance of 0.1. Lines were intersected and then built into polygons. In 2008, the data was migrated into ArcGIS 9.3 where all DNR Catchment polygons were assembled into a statewide-seamless watershed dataset using ArcGIS 9.3 ArcGIS File Geodatabase topology rules and editing tools. These DNR Catchment data are topologically correct, all polygons are closed and lines intersect where intended.

Completeness: These data are published for April 2009.


The 1998 Minnesota Legislature mandated DNR Waters to develop a new watershed delineation methodology that delineates lake watersheds for all lakes that have a surface area of 100 acres or larger. This project, called the DNR Lake Watershed Delineation Project, defined 9,667 DNR Catchments from July 1998 to July 2008. Additional work continues on a regular basis. These data includes over 4,000 individual DNR Basin Catchments for lakes with a surface area of 100 acres or larger that will aggregate with other upstream contributing catchments to define the actual total basin watershed referred to as DNR Basin Watersheds.

Horizontal Positional Accuracy: Source layer wshd_lev08py3: No quantitative studies of horizontal positional accuracy exist for the data. Although positional accuracy of watershed delineations can be arbitrary, accuracy of these data can be reasonably estimated based on the characteristics of all source materials and processing techniques to be 100 feet (30 meters) from correct position.

Vertical Positional Accuracy: Source layer wshd_lev08py3: No quantitative studies of vertical positional accuracy exist for the data.

Lineage: Attribute Lineage for source table WSHD_LEV08PY3.DBF: Source data: wshd_lev08py3

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: Data Elements for Attribute Table WSHD_LEV08PY3.DBF:

DOWGAGEID: DNR Gage Ids. Values = Gage IDs.



NID_ID: National Inventory Dam Ids.

MAJOR: Minnesota DNR Major Watershed ID numbers.
1-5, 7-44, 46-63, 65-84.


Note: Majors 6, 45, and 64 do not exist.

MINOR5: Minnesota DNR Minor Watershed ID number. The first charactors of this field are the the DNR Major Watershed ID number.

CATCH_ID: Primary ID field. DNR Catchment IDs, same as HPOI_ID except it is a string.


DOWLKNUM: Minnesota DNR Division of Waters unique lake and wetland identification number for basins of Public Waters.

HYDROID: DNR CATCH_ID plus two digits. Created for Arc Hydro integration.


LAKE_AC: Recorded lake acres from Protected Waters dataset.

DOWN_CAT: DNR Catchment(CATCH_IDs) of adjacent downstream receiving DNR Catchments.

NEXTDOWNID: HYDROID of adjacent downstream receiving DNR Catchments. Created for Arc Hydro Integration.


UP_COUNT: Total number of adjacent upstream contributing DNR Catchments.

UPADJ_CAT: List of adjacent upstream contributing DNR Catchments.


CATCH_AC: This field contains the spatial extent of individual DNR Catchment polygons in ACRES as represented by each record.


TOT_SHED_A: Total Acres of all upstream contributing DNR Catchment polygon(s) to this individual polygon as represented by this record.

NCONTRB_A: Not Available


CONTRIB_A: Not Available

PW_AC: Total of all acres of DNR Protected Waters contained within the DNR Catchment represented by this record.


NWI_AC: Total of all acres of NWI polygons contained within the DNR Catchment represented by this record.


DCA_RATIO: DNR DCA/Catchment to Lake area ratio.


TOT_RATIO: Standard watershed to lake basin ratio.


LK_RATIO: DNR Basin Watershed minus all PW polygon areas to lake basin ratio.


STO_RATIO: DNR Total Watershed storage to lake ratio.


CONTB_RAT: Not Available.

HUC_2: DNR Hydrologic Unit Level 1, 2 digit Administrative Watershed.

HUC_4: DNR Hydrologic Unit Level 2, 4 digit Administrative Watershed.


HUC_6: DNR Hydrologic Unit Level 3, 6 digit Administrative Watershed.

HUC_8: DNR Hydrologic Unit Level 4, 8 digit Administrative Watershed.

HUC_10: DNR Hydrologic Unit Level 5, 10 digit Administrative Watershed.

HUC_12: DNR Hydrologic Unit Level 6, 12 digit Administrative Watershed.

STATES: Includes the names of all state(s) that the DNR Catchment falls within.

HU_10_DS: 10-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within.

HU_10_NAME: A unique name for each 5th level hydrologic unit that relates to the major water feature within the polygon or the major water body it contributes to.


HU_10_MOD: Identifies modifications that modify natural overland that alters the location of the HU boundary for a 10-digit subwatershed.

HU_10_TYPE: This field identifies the type of watershed.

HU_12_DS: 12-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within. Outlets created by ditching or other artificial drainage were not considered for this field.

HU_12_NAME: A unique name for each 6th level hydrologic unit that relates to the major water feature within the polygon or the major water body it contributes to.

HU_12_MOD: Identifies modifications that modify natural overland that alters the location of the HU boundary for a 12-digit subwatershed.


HU_12_TYPE: This field identifies the type of watershed.

HU_10_GNIS: GNIS Feature Identification Numbers for each feature in the 5th level hydrologic unit name separated by a space.


HU_12_GNIS: GNIS Feature Identification Numbers for each feature in the 6th level hydrologic unit name separated by a space.

HPOI_CLASS: Combination of digits representing types of HPOIs.


1 - Basin (DNR Lakes & Wetlands)

2 - Sub-basin (bay)

3 - Dam

4 - Gage

5 - Minnesota DNR Minor Watershed

6 - Minnesota DNR Major Watershed

7 - Frontal Watersheds (Lake Superior)

8 - Tailings Basin (Ore mining)

9 - Semi-permanent HPOI (Fisheries survey locations, Water Quality monitoring site etc.)



Possible values, not limited to: 1, 3, 2, 4, 5, 6, 7, 8, 13, 14, 15, 16, 34, 35, 45, 99, 134, 135, 136, 345, 1345, 1346 etc.


E.g 135 = DNR Basin (1) and Dam (3) and DNR Minor Watershed Outlet (5).

HPOI_ID: DNR Hydrologic Points Of Interest Ids.


This unique identification number is derived by adding two trailing digits to the DNR MINOR5 ID.


Same as CATCH_ID, except it this field is an integer. This is a ley field for Joins. This field ties the unique ID to the DNR Pour Points.



Detailed Citation:

Table Detail:
TRDDY
Field NameValid ValuesDefinitionDefinition Source
CATCH_ID
-

Section 6: Distribution

Publisher: Minnesota DNR - Division of Waters

Publication Date: 04/07/2009

Contact Person Information: GIS Data Contact, GIS Data Contact
Minnesota DNR - MIS/GIS Unit
500 Lafayette Rd
Saint Paul, MN  55155
Phone: 651-259-5508
Email: hal.watson@state.mn.us

Distributor's Data Set Identifier: geos_dnr_watersheds.gdb\dnr_watersheds_dnr_level_08_all_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: Sean Vaughn, GIS Hydrologist
Minnesota DNR - Division of Waters
800 Oak Savanna Lane SW
Cambridge, MN  55088
Phone: 763-689-7106
Fax: 763-689-7120
Email: sean.vaughn@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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