Metadata for Montana Dams, 2003 Metadata for Montana Dams, 2003

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Identification Information:

Citation:

Originator: Montana Fish, Wildlife, and Parks
Publication date: 09/16/2003
Title: Montana Dams, 2003
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Dams2003.zip

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Thumbnails/20020723_490_thumb.jpg
Browse graphic file description: Thumbnail of Montana's Dams map

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Individual/20020723_490_2002_DamsHeight.pdf
Browse graphic file description: Map of Montana's Dams

Abstract:

This spatial inventory of Montana dams was assembled by Montana Fish, Wildlife, and Parks from the National Inventory of Dams (NID), maintained by the U.S. Army Corps of Engineers, and the USGS Geographic Names Information System (GNIS). Data from the NID about the size, type, purpose, owner, year built, and hazard classification are included in the data.

Time period of content:

Calendar date: 2003
Currentness reference: publication date

Status:

Progress: Complete

Access constraints: None

Use constraints:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Jeffrey Hutten
GIS Programmer/Analyst
Montana Fish, Wildlife, and Parks
490 N Meridian Road
Kalispell, MT 59901
Telephone: 406-751-4571
Fax: 406-257-0349
E-Mail: jhutten@mt.gov

Data Quality Information:

Attribute accuracy report:

The data were simply compiled into one dataset and very little attribute editing or quality checking were performed. The accuracy of the source data sets is unknown.

Horizontal Positional Accuracy Report:

Some dams in the National Inventory of Dams were found to be between 100 yards and 20 miles away from their correct positions.

Lineage:

Source information:

Originator: U.S. Army Corps of Engineers
Publication date: 2001
Title: National Inventory of Dams
Online linkage: http://crunch.tec.army.mil/nid/webpages/nid.cfm
Source contribution:: Dams with a value of 8000002 in the REFID field came from this source.
Calendar date: 2001

Source information:

Originator: U.S. Geological Survey
Publication date: 2000
Title: Geographic Names Information System
Online linkage: http://geonames.usgs.gov
Source scale denominator: 24000
Source contribution:: Dams with a value of 8000003 in the REFID field came from this source.
Calendar date: 2000

Process step:

The data were assembled from two datasets: the National Inventory of Dams (NID), maintained by the U.S. Army Corps of Engineers and the USGS Geographic Names Information System (GNIS) dams feature class. The NID data were an ASCII text table containing spatial coordinates (latitude-longitude) and attributes. The GNIS data were obtained from the Natural Resource Information System (NRIS) at the Montana State Library. The two datasets were then compared for duplicates, first spatially by identifying points that were within 100 meters of any other point in the other dataset and then visually comparing the attributes to determine whether or not they were unique. Secondly, the two data sets were checked for duplicate names and their uniqueness again visually compared. The two datasets were then combined.

Process date: 02/2002

Process contact:

Jeffrey Hutten
GIS Programmer/Analyst
Montana Fish, Wildlife, and Parks
490 N Meridian Road
Kalispell, MT 59901
Telephone: 406-751-4571
Fax: 406-257-0349
E-Mail: jhutten@mt.gov

Process step:

Browse through the data and move some NID dams to their correct posistions, removing GNIS dams that they duplicate. The following dams were moved: THOMPSON FALLS - INTAKE DAM A , THOMPSON FALLS - INTAKE DAM B, THOMPSON FALLS - DRY CHANNEL DAM, THOMPSON FALLS - MAIN CHANNEL DAM, BIGFORK DAM, LOWER TWO MEDICINE DAM, FRENCHMAN DAM, LAKE FRANCES NORTH DAM, LITTLE BITTERROOT DAM, KERR DAM, MCGREGOR LAKE DAM, MILLTOWN DAM, CANYON FERRY DAM, TOSTON DAM, HEBGEN DAM, HOLTER DAM.

The name of BROADWATER DAM was changed to TOSTON DAM and SWAN RIVER DIVERSION DAM was changed to BIGFORK DAM.

The Latitude and Longitude coordinates were re-calculated, and the kilowatt capacity of hydroelectric plants was added from a database provided by the Montana Dept of Environmental Quality.

Process date: 07/30/2002

Process contact:

Gerry Daumiller
Montana State Library
Telephone: 406-444-5358
E-Mail: gdaumiller@mt.gov

Process step:

Move Hemund Dam from 46.76N 111.8583W to 45.76N 111.8655 W. Delete George Hemund Dam, which was at 45.7716N -111.8192W, which may never have existed.

Process date: 01/22/2003

Process contact:

Gerry Daumiller
Montana State Library
Telephone: 406-444-5358
E-Mail: gdaumiller@mt.gov

Process step:

Move JESSUP MILL POND DAM, SAINT MARY'S DIVERSION DAM, BLACK EAGLE DAM, and COCHRANE DAM to their correct positions.

Process date: 09/15/2003

Process contact:

Gerry Daumiller
Montana State Library
Telephone: 406-444-5358
E-Mail: gdaumiller@mt.gov

Process step:

Change the height of HELL ROARING DAM near Flathead Lake from -9 to 11. This was done when I noticed that it was the only dam in the layer with a kilowatt figure that did not have a height. I found a permit document for construction to reduce the dam height by 9 feet in 2011 to address safety concerns. The original plans for the dam in this document show that it was about 20 feet high.

Process date: 07/09/2015

Process contact:

Gerry Daumiller
Montana State Library
Telephone: 406-444-5358
E-Mail: gdaumiller@mt.gov

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: Entity point

SDTS object count: 3671

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System 1983

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000

Planar distance units: meters

Geodetic model:

Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222

Entity and Attribute Information:

Entity type label: Dams_2003

Attribute label: FID

Attribute definition: Shapefile sequence number

Attribute label: Shape

Attribute definition: Feature geometry

Attribute label: NEWDAMS_ID

Attribute definition: ID number from original coverage version of the data

Attribute label: DAMID

Attribute definition: ID Assigned by Montana Fish, Wildlife, and Parks
Range domain minimum: 70001
Range domain maximum: 74071

Attribute label: REFID

Attribute definition: Data Source Identifier

Attribute label: NIDID

Attribute definition: National Inventory of Dams Identifier

Attribute label: NAME

Attribute definition: Name of Dam

Attribute label: OWNER

Attribute definition: Name of dam owner

Attribute label: OWNTYPE

Attribute definition: Type of owner

Attribute label: HEIGHT

Attribute definition: Height of Dam in Feet
Range domain minimum: 1
Range domain maximum: 625
Attribute units of measure: Feet

Attribute label: LENGTH

Attribute definition: Length of the top of the dam, in feet
Range domain minimum: 3
Range domain maximum: 21026
Attribute units of measure: Feet

Attribute label: YEAR

Attribute definition: Year that dam was completed
Range domain minimum: 1819
Range domain maximum: 1997
Attribute units of measure: years

Attribute label: KILOWATTS

Attribute definition: Total nameplate capacity of hydroelectric generators
Range domain minimum: 0
Range domain maximum: 525000
Attribute units of measure: kilowatts
Attribute measurement resolution: 100

Attribute label: ISPSECTION

Attribute definition: Section, Township, and Range location of dam

Attribute label: COUNTY

Attribute definition: County that dam is in.

Attribute label: RIVER

Attribute definition: Name of river or stream upon which the dam is built

Attribute label: CITY

Attribute definition:: Nearest downstream city or town likely to be flooded if dam fails

Attribute label: DISTANCE

Attribute definition: Distance to the nearest affected city or town, miles
Range domain minimum: 0
Range domain maximum: 130
Attribute units of measure: Miles

Attribute label: DAMTYPE

Attribute definition:: Codes for type of Dam. The values listed in the enumerated domain may be concatenated in the field, without spaces, to indicate multiple types.

Attribute label: PURPOSES

Attribute definition:: Codes indicating the purposes of the dam/reservoir. Codes are concatenated if dam has multiple purposes.

Attribute label: STORAGE

Attribute definition: Water storage of the reservoir, in acre-feet
Range domain minimum: 0
Range domain maximum: 19100000
Attribute units of measure: Acre-feet

Attribute label: SURFAREA

Attribute definition: Surface area of the reservoir, acres
Range domain minimum: 0
Range domain maximum: 124800
Attribute units of measure: acres

Attribute label: DRANAREA

Attribute definition: Drainage area of stream above dam, square miles
Range domain minimum: 0
Range domain maximum: 57725
Attribute units of measure: square miles

Attribute label: HAZARD

Attribute definition:: Term indicating the potential hazard to the downstream area resulting from failure or mis-operation of the dam or facilities.

Attribute label: LLID