Inventory of Dams in Minnesota
Go to Section:- Overview
- Data Quality
- Data Organization
- Coordinate System
- Attributes
- Distribution - Get Data
- Metadata Reference
Section 1: Overview
Originator:Minnesota Department of Natural Resources (MNDNR) - Division of Ecological and Water Resources, Dam Safety Unit
Title:
Inventory of Dams in Minnesota
Abstract:
The data set includes information on dam locations in Minnesota and associated permits.
Purpose:
The National Dam Inspection Act of 1972 (P.L. 92-367) authorized the United States Corps of Engineers to inventory dams located in the United States. The MNDNR received funding to inventory the dams in Minnesota. The MNDNR currently maintains the inventory of dams in Minnesota.
Time Period of Content Date:
06/02/2022
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:
Continually
Spatial Extent of Data:
Bounding Coordinates:
-97.23
-89.53
49.37
43.5
Place Keywords:
Minnesota
Theme Keywords:
dam, dams
Theme Keyword Thesaurus:
Access Constraints:
None
Use Constraints:
Use of the data are constrained only by the MNDNR GIS Data License Agreement. See the Distribution Liability section below for a link.
Contact Person Information:
Jason Boyle,
State Dam Safety Engineer
Minnesota Department of Natural Resources
500 Lafayette Rd
Saint Paul,
MN
55155
Phone: 651-259-5715
Email: jason.boyle@state.mn.us
Section 2: Data Quality
Attribute Accuracy:
Values taken from permit applications, engineering reports, field inspections, surveys, USGS 15 minute quadrangle maps, and LiDAR data.
Logical Consistency:
Completeness:
This inventory has a complete record of all "significant" dams. This includes any dams that require regulatory attention by meeting sufficient size or hazard class rating requirements, or dams that were evaluated but did not meet size or hazard conditions. It also includes all dams managed by the DNR's Division of Ecological and Water Resources.
Horizontal Positional Accuracy:
Accuracy generally within 10 meters. Dam locations either determined in the field using hand held GPS or from air photo maps.
Vertical Positional Accuracy:
Lineage:
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:
Table Detail:
dam_locations - a point feature class of inventoried dams| Field Name | Valid Values | Definition | Definition Source |
|---|
| dam_name | - | | |
| nid_id | - | unique dam identifier used to link dams to permits | |
| county | - | text name of the county | |
| status_of_dam | - | Indicates whether the dam is regulated | |
| owner | - | | |
| owner_type | - | | |
| year_completed | - | The year damn construction was completed | |
| present_purpose | - | | |
| top_dam_hgt | - | Top Dam Height | |
| max_store | - | Maximum storage capacity, in acre-feet | |
| norm_store | - | Normal storage volume, in acre-feet | |
| top_dam_elev | - | Elevation of the top of the dam | |
| prin_spill_elev | - | Elevation of the principal spillway | |
| datum_elev | - | Vertical Datum of the elevation measurements | |
| prin_spill_hgt | - | Principal Spillway Height | |
| drainage_area | - | Drainage Area in square miles | |
| Comments | - | | |
| hazard | enumerated | Hazard Rating | |
| H | High | |
| S | Significant | |
| L | Low | |
| sect_town | - | PLS coordinates | |
| utmx | - | UTM Z15N Easting | |
| utmy | - | UTM Z15N Northing | |
| river | - | | |
| year_mod | - | The last year the damn was modified since the completion date | |
| permit | - | | |
| rec_dwg_recd | - | Record drawings from engineer | |
| o_m_plan | - | Operations and Maintanence Plan | |
| last_insp_date | - | Last Inspection Date | |
| insp_freq | - | Inspection Frequency | |
| next_insp_year | - | Next Inspection Year | |
| condition_assessment | enumerated | | |
| Satisfactory | | |
| Fair | | |
| Poor | | |
| Not Rated | | |
Section 6: Distribution
Publisher:
Minnesota Department of Natural Resources (DNR)
Publication Date:
10/23/2014
Contact Person Information:
Zeb Thomas,
GIS Data Systems Coordinator
Minnesota Department of Natural Resources
500 Lafayette Rd
Saint Paul,
MN
55155
Phone: 651-259-5637
Email: zeb.thomas@state.mn.us
Distributor's Data Set Identifier:
struc_mn_dams_inventory_pub
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:
07/09/2021
Contact Person Information:
Rachel Lindgren,
Hydrologist
Minnesota DNR - Ecological and Water Resources
500 Lafayette Rd
Saint Paul,
MN
55155
Phone: 651-259-5665
Email: rachel.lindgren@state.mn.us
Metadata Standard Name:
Minnesota Geographic Metadata Guidelines
Metadata Standard Version:
1.2
