MNDNR Forest Inventory Old Growth

This page last updated: 01/06/2023 Metadata created using Minnesota Geographic Metadata Guidelines

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Overview
Data Quality
Data Organization
Coordinate System
Attributes
Distribution - Get Data
Metadata Reference

Section 1: Overview

Originator:Minnesota DNR - Division of Forestry

Title: MNDNR Forest Inventory Old Growth

Abstract: This layer is a digital inventory of currently designated or candidate old growth forest stands on lands administered by the Department of Natural Resources (DNR). This data originates from the Inventory Module of the Minnesota DNR's 4Trees System. Old growth forest designations are determined through an interdisciplinary evaluation process by DNR staff in divisions of Forestry, Fish and Wildlife, Ecological and Water Resources, and Parks and Trails. These data are updated on a continuous basis, as needed.

Also included is the old growth Special Management Zone (SMZ), a 330-foot buffer around the Old Growth layer.

Purpose: Forest resource planning, harvest plans, treatment plans, wildlife habitat assessment, natural heritage review, native plant community mapping support, historical vegetation studies.

Time Period of Content Date: 06/04/2026

Currentness Reference: Time Period of Content date indicates the date which the user can be confident of accuracy and completeness of the dataset.

Progress: Complete

Maintenance and Update Frequency: Daily

Spatial Extent of Data: Statewide

Bounding Coordinates: -96.309815
-89.813889
49.292426
43.479354

Place Keywords: Minnesota, MN

Theme Keywords: Forest, Old Growth, Forest Inventory, Land Cover, biota.

Theme Keyword Thesaurus: ISO 19115 Category

Access Constraints: None

Use Constraints: None

Contact Person Information: Kari Geurts, MNIT Forestry Business Services Supervisor
Minnesota DNR - Forestry
500 Lafayette Rd
Saint Paul, MN 55155
Phone: 651-259-5275
Email: kari.geurts@state.mn.us

Browse Graphic: Click to view a data sample.
Old Growth Stands

Associated Data Sets: MNDNR Forest Inventory: https://gisdata.mn.gov/dataset/biota-dnr-forest-inventory

MNDNR Historic Forest Stand Inventory: Archives of 4trees and (its predecessor) FIM going back to 2001. Full data download (>2 GB): https://gdrs.dnr.state.mn.us/gdrs/data/pub/us_mn_state_dnr/biota_historic_dnr_fim.zip

Section 2: Data Quality

Attribute Accuracy: Data are in use by DNR staff on a daily basis. Attributes are fixed as problems are made known

Logical Consistency:

Completeness: As new lands are acquired, 4Trees Stand Inventory data collection is scheduled.

Horizontal Positional Accuracy: Features are digitized onscreen over standard 24k digital raster graphics (DRGs) and U.S. Geological Survey (USGS) digital orthophoto quadrangles (DOQs) and will inherit the horizontal positional accuracy of those products.

Vertical Positional Accuracy: Not Applicable

Lineage: Original source layer was MNDNR's enterprise geodatabase: Forest Inventory Managment System (FIM). Data are now extracted on a regular basis from the MNDNR's 4Trees Inventory Module (LRM)

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: NAVD88

Vertical Units: meters

Depth Datum: not applicable

Depth Units: meters

Section 5: Attributes

Overview: Stand Key: Unique system-generated number to identify the stand

SLabel: Stand label consisting of the stand's FIM_type and Cover Type Classification/Size/Density

Cover Type Code: Cover type code (see table below)

Site Index: Site Index Value (a measure of site productivity)

Main Species Code: Code for species used for the site index value (see table below)

Old Growth Status: Text field indicating the current old growth designation status (designated, designated FOG, or candidate)(see table below)

Old Growth ID: Unique ID for each old growth site (which can be comprised of multiple stands)

Old Growth Comment: General notes section that sometimes includes info about OG

Location: t-number; unique for each stand

RAN: DNR Division of Forestry Administrative Area Code (see table below)

County Number: Number assigned to the county name (see table below)

PLS: PLS value

Stand Age Last Inventory: Computed from most recent inventory activity

Stand Acres: Total acres in the stand

Stand Age - Current: Current stand age (Current Year - Last Inventory Year) + Last Inventory Age

Detailed Citation:

Table Detail:

**dnr_forest_inventory_old_growth**
Field Name	Valid Values	Definition
Cover Type Code	enumerated	Cover Type
	0	None
	1	Ash
	6	Willow
	9	Lowland Hardwoods
	12	Aspen
	13	Birch
	14	Balm of Gilead
	15	Cottonwood
	17	Hybrid Poplar
	20	Northern Hardwoods
	25	Walnut
	30	Oak
	40	Central Hardwoods
	51	White Pine
	52	Norway Pine
	53	Jack Pine
	54	Scotch Pine
	55	Ponderosa Pine
	61	White Spruce
	62	Balsam Fir
	64	Norway Spruce
	70	Upland Larch
	71	Black Spruce-Lowland
	72	Tamarack
	73	White Cedar
	74	Black Spruce-Upland
	75	Stagnant Spruce
	76	Stagnant Tamarack
	77	Stagnant Cedar
	78	Offsite Aspen
	79	Offsite Oak
	81	Red Cedar
	82	Cutover Area
	83	Lowland Grass
	84	Upland Grass
	85	Lowland Brush
	86	Upland Brush
	87	Duff
	88	Moss
	90	Unknown
	91	Agricultural
	92	Industrial Develop
	93	Recreation Develop
	94	Roads
	95	Rock Outcrop
	96	Permanent Water
	97	Nonpermanent Water
	98	Marsh
	99	Muskeg
Main Species Code	enumerated	Main Species
	1	Ash, Black
	2	Elm, American
	3	Maple, Silver
	4	Elm, Red
	5	Elm, Rock
	6	Willow (tree)
	7	Elm, Siberian
	12	Aspen, Trembling
	13	Birch, Paper
	14	Balm of Gilead
	15	Cottonwood, Eastern
	16	Aspen, Largetooth
	17	Poplar, Hybrid
	21	Maple, Red
	22	Maple, Sugar
	23	Basswood
	24	Birch, Yellow
	25	Black Walnut
	26	Butternut
	27	Cherry, Black
	28	Buckeye
	29	Birch, Heart-leaved
	31	Aspen, Trembling
	32	Oak, Black
	33	Oak, Northern Pin
	34	Oak, White
	35	Oak, Bur
	38	Ash, White
	39	Ash, Green
	41	Hickory, Bitternut
	42	Hickory, Shagbark
	43	Hackberry
	45	Boxelder
	51	Pine, White
	52	Pine, Norway(Red)
	53	Pine, Jack
	54	Pine, Scotch(Scots)
	55	Pine, Ponderosa
	56	Pine, Austrian
	61	Spruce, White
	62	Fir, Balsam
	63	Spruce, Colorado
	64	Spruce, Norway
	65	Spruce, Black Hills
	71	Spruce, Black
	72	Tamarack
	73	Cedar, White
	81	Cedar, Eastern Red
	82	Hemlock, Eastern
	83	Fir, Douglas
	84	Larch, European
	85	Larch, Japanese
	86	Larch, Siberian
	90	Locust, Honey
	91	Locust, Black
	92	Ironwood
	93	Birch, River
	94	Blue Beech
	99	Misc Species 1
	100	Kentucky Coffeetree
	101	Larch, Hybrid
	102	Maple, Norway
	103	Oak, Chinkapin
	104	Oak, Swamp White
	1000	Misc Species 2
	1001	Misc Species 3
	10005	Alder
	10006	Cherry, Pin
	10007	Chokecherry
	10008	Dogwood
	10009	Hazel
	10010	Maple, Mountain
	10011	Mountain-Ash
	10012	Raspberry
	10013	Willow (shrub)
Old Growth ID	enumerated	Old Growth Status
	5	Designated Old Growth
	7	Designated Future Old Growth
	8	Candidate Old Growth
RAN	enumerated	DNR Division of Forestry Administrative Areas
	111	Bemidji Area
	117	Blackduck Area
	121	Warroad Area
	131	Baudette Area
	142	Backus Area
	161	Park Rapids Area
	199	Red Lake
	221	Deer River Area
	232	Aitkin Area
	234	Hibbing Area
	245	Tower Area
	251	Cloquet Area
	253	Two Harbors Area
	261	Littlefork Area
	312	Little Falls Area
	341	Lewiston Area
	344	Sandstone Area
	351	Cambridge Area
	443	New Ulm Area
County ID	enumerated	County Name
	1	Aitkin
	2	Anoka
	3	Becker
	4	Beltrami
	5	Benton
	6	Big Stone
	7	Blue Earth
	8	Brown
	9	Carlton
	10	Carver
	11	Cass
	12	Chippewa
	13	Chisago
	14	Clay
	15	Clearwater
	16	Cook
	17	Cottonwood
	18	Crow Wing
	19	Dakota
	20	Dodge
	21	Douglas
	22	Faribault
	23	Fillmore
	24	Freeborn
	25	Goodhue
	26	Grant
	27	Hennepin
	28	Houston
	29	Hubbard
	30	Isanti
	31	Itasca
	32	Jackson
	33	Kanabec
	34	Kandiyohi
	35	Kittson
	36	Koochiching
	37	Lac Qui Parle
	38	Lake
	39	Lake of the Woods
	40	LeSueur
	41	Lincoln
	42	Lyon
	43	McLeod
	44	Mahnomen
	45	Marshall
	46	Martin
	47	Meeker
	48	Mille Lacs
	49	Morrison
	50	Mower
	51	Murray
	52	Nicollet
	53	Nobles
	54	Norman
	55	Olmsted
	56	Otter Tail
	57	Pennington
	58	Pine
	59	Pipestone
	60	Polk
	61	Pope
	62	Ramsey
	63	Red Lake
	64	Redwood
	65	Renville
	66	Rice
	67	Rock
	68	Roseau
	69	St. Louis
	70	Scott
	71	Sherburne
	72	Sibley
	73	Stearns
	74	Steele
	75	Stevens
	76	Swift
	77	Todd
	78	Traverse
	79	Wabasha
	80	Wadena
	81	Waseca
	82	Washington
	83	Watonwan
	84	Wilkin
	85	Winona
	86	Wright
	87	Yellow Medicine

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources (DNR)

Publication Date: 09/16/2022

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: biota_dnr_forest_inv_old_growth

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: 01/06/2023

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

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2

Metadata Standard Online Linkage: http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm

This page last updated: 01/06/2023
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