Rick Moore Minnesota DNR - Ecological and Water Resources GIS Analyst 507-389-8810 117 Rogers Street Mankato MN 56001 rick.moore@state.mn.us 20231027 Zeb Thomas Minnesota DNR - GIS Spatial Data Systems Administrator 651-259-5637 500 Lafayette Rd Saint Paul MN 55155 zeb.thomas@state.mn.us Please visit the download page for this dataset on the Minnesota Geospatial Commons website using the web link below (Online Linkage). ArcView Shapefile 1.0 http://gisdata.mn.gov/dataset/geos-dnr-watersheds DNR Watersheds - DNR Level 08 - All Catchments 2023-10-27 Minnesota Department of Natural Resources Minnesota DNR - Division of Ecological and Water Resources <a href="metadata.html">Back to main DNR Watershed Suite metadata page</a> 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 and Canada where water flows into Minnesota, or a Minnesota bordering water, and/or where the DNR Catchment extends across the state boundary. <a href="MN DNR WATERSHED SUITE UPDATE 2023.pdf">The 2023 Watershed Delineation Update</a> includes additional catchments that represent watershed contributing areas that flow into a Minnesota bordering water. These catchments were derived from the USGS HUC12s that represent these watersheds and integrated into the catchment dataset. The USGS HUC12’s were extracted from the WBD Dataset on March 2023 and were checked for harmonization of polygon boundaries using ArcGIS 10.8.1 topology tools. 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 dependent. 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 History and Standards of Watershed Delineation in Minnesota and the DNR Watershed Delineation Project https://www.dnr.state.mn.us/watersheds/history_standards.html 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. Sean Vaughn Minnesota DNR - Ecological and Water Resources GIS Hydrologist 763-689-7106 800 Oak Savanna Lane SW Cambridge MN 55088 sean.vaughn@state.mn.us Minnesota 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 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 Minnesota 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 Geospatial Commons. 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 Ecological and Water Resources - Watershed Delineation Project, Publication Date: 11/01/2023. 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 USGS 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. The Minnesota Department of Natural Resources General Geographic Data License Agreement is online: http://www.dnr.state.mn.us/sitetools/data_software_license.html Data are unrestricted with regards to access. ArcGIS File Geodatabase true -100.5 -89.4 49.9 43.1 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. These 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 principal 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 40 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. Statewide with catchments extending into adjacent states and Canada where water contributes to DNR Level 08 catchments within the Minnesota state boundary. (1998-2011) 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. (2023) Topology was reviewed using ArcGIS 10.8 in 2023. These DNR Catchment data are topologically correct, all polygons are closed and lines intersect where intended. These data are published for November 2023. 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 include 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. 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. Source layer wshd_lev08py3: No quantitative studies of vertical positional accuracy exist for the data. Attribute Lineage for source table WSHD_LEV08PY3.DBF: Source data: wshd_lev08py3 Original Originator: Minnesota DNR - Division of Waters - Watershed Delineation Project, Publication Date: 4/7/2009 Source layer wshd_lev08py3: 24000 DNR Catchment Polygons http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm dnr_watersheds_dnr_level_08_all_catchments DNR Watersheds - Level 08 - All Catchments CATCH_ID Primary ID field. DNR Catchment IDs, same as HPOI_ID except it is a string HPOI_CLASS Combination of digits representing types of HPOIs (Hydrologic Points of Interest). 1 Basin (DNR Lakes and 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 sites etc.) 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, 65-74, 76-84. Note: Majors 6, 45, 64, and 75 do not exist. MINOR5 Minnesota DNR Minor Watershed ID number. The first characters of this field are the DNR Major Watershed ID Number HPOI_ID DNR Hydrologic Points of Interest IDs. This unique identificaiton number is derived by adding two trailing digits to the DNR Minor ID. HYDROID DNR Catch_ID plus two digits. Created for Arc Hydro integration DOWLKNUM Minnesota DNR Division of Ecological and Water Resources unique lake and Wetland identification number for basins of Public Waters LAKE_AC Recorded lake acres from Protected Waters dataset DOWN_CAT DNR Catchment (CATCH_ID) of adjacent downstream receiving DNR Catchment. 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. NCONTRIB_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. TOT_PW_AC Total acres of all upstream contributing DNR Protected Waters polygons to this individual DNR Catchment polygon represented by this record. NWI_AC Total of all acres of NWI polygons contained within the DNR Catchment represented by this record. TOT_NWI_AC Total acres of all upstream contributing NWI polygons to this individual DNR Catchment polygon 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, 2 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. UPTOT_CAT Total number of all upstream contributing DNR Catchment polygon(s) to this individual polygon and including the polygon as represented by this record Data Elements for Attribute Table DNR_WATERSHEDS_DNR_LEVEL_08_ALL_CATCHMENTS: CATCH_ID: Primary ID field. DNR Catchment IDs, same as HPOI_ID except it is a string. MAJOR: Minnesota DNR Major Watershed ID numbers. 1-5, 7-44, 46-63, 65-74, 76-84. MAJOR Note: (1998) Minnesota DNR Major Watershed 6, 45, 64, and 75 do not exist. These legacy delineations were removed by DNR Division of Waters from the official DNR Major Watershed Map during updates prior to the digital, GIS-based DNR Watershed Delineation Project updates (1998 – 2011) (2023) Major Watersheds 75 (Rainy River – Manitou) and 79 (Rainy River - Baudette) were combined into one Major Watershed called the Lower Rainy River retaining number 79. The change to the DNR’s data aligns with the USGS Watershed Boundary Dataset (WBD) - Lower Rainy River (09030008). (2023) Minnesota DNR Major Watershed numbers 97, 98 and 99 are not formal regulatory DNR Major Watersheds. In this dataset, these large pseudo-Majors are administrative drainages built from aggregated U.S. Geological Survey - Watershed Boundary Dataset (WBD) - HUC12 boundaries that contribute water to the borders Minnesota from adjacent states and Canadian Provinces. 97 = North Dakota 98 = Wisconsin 99 = Canada 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 this field is an integer. This is a key field for Joins. This field ties the unique ID to the DNR Pour Points. 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, 2, 3, 4, 5, 6, 7, 8, 9, 13, 14, 15, 16, 34, 35, 45, 99, 134, 135, 136, 345, 1345, 1346 etc. Example: 135 = DNR Basin (1) and Dam (3) and DNR Minor Watershed Outlet (5). 1.0 20260407 16472400 TRUE