GRAVEL PITS



Field

Description

Main ID Information

Metadata Updated 2007

Title

Nicollet County Aggregate Evaluation - Gravel Pits

Filename

Gvl_pits (ArcView Shapefile)

Abstract

This dataset consists of location information about the gravel pits and quarries within Nicollet County.

Place Keywords

Nicollet County, Minnesota

Theme Keywords

Gravel Pits, Quarries

Time Period of Content

Summer and Fall 1999

Parent Theme

NA

Spatial Extent of the Data

Nicollet County, Minnesota

Contact Person

Aggregate Resource Mapping Program (Geologist or GIS Specialist)
Minnesota Department of Natural Resources, Division of Lands and Minerals
500 Lafayette Road, Box 45

St. Paul, MN 55155-4045
Phone: 651-259-5959
FAX:  651-296-5939
E-mail: AggregateMap@dnr.state.mn.us

Contact Person Organization/Division

Department of Natural Resources, Division of Lands and Minerals

Contact Person Position

Geologist or GIS Specialist

Contact Address

500 Lafayette Road, Box 45

Contact City

St. Paul

Contact Zip Code

55155-4045

Contact Voice Phone

651-259-5959

Contact Fax Phone

651-296-5939

Additional ID Information

 

Originator

Department of Natural Resources, Division of Lands and Minerals, Mineral Potential Section

Purpose

To display the gravel pit and quarry locations within Nicollet County.

Progress

Complete

Currentness Reference

1999-2000

Maintenance Frequency

None planned

Access Constraints

NA

Use Constraints

NA

Associated Data Sets

NA

Data Quality

 

Attribute Accuracy

These points were digitized in ArcView (on screen digitizing) from DRG's (Digital Raster Graphic Files of 1:24,000 topographic maps), DOQ's (Aerial Photographs), soil maps, and the ASIS Database.

Logical Consistency

NA

Completeness

Described in "lineage" below.

Horizontal Positional Accuracy

1:24000

Vertical Positional Accuracy

NA

Lineage

These points were gathered from a variety of sources, some were digitized to within a few meters, others were located on DOQ's (Digital Orthophoto Quadrangles) and DRG's with on screen digitizing. The gravel pits and quarries are fairly large, thus the points are located somewhere in the disturbed area, and should be very accurate.

Source Scale Denominator

1:24000

Spatial Reference

 

Horizontal Coordinate Scheme

UTM

Ellipsoid

GRS80

Horizontal Datum

NAD83

Horizontal Units

Meters

Distance Resolution

NA

Altitude Datum

NA

Altitude Units

NA

Depth Datum

NA

Depth Units

NA

UTM Zone Number

15

Raster only

 

Cell Width

NA

Cell Height

NA

Spatial Data Organization

 

Geographic Reference for Tabular Data

NA

Native Dataset Environment

ArcView 3.1 / ArcInfo 8,0.2

Vendor Specific Object Type

NA

Tiling Scheme

NA

Spatial Object Type

Point

Transfer Size

26 kb

Entities -- Attributes

 

Entity-Attribute Overview

This dataset consists of location information about the gravel pits and quarries within Nicollet County. This shapefile can be joined to dot_qual.dbf to get more information about the gravel pits that list the Source as "ASIS".

Entity-Attribute Detailed Citation

See table below: Arcview specific fields include shape (i.e., feature type = point), area (0 for points), perimeter (0 for points), filename (unique id for point, assigned by the software), filename_i or filename_id if filename is less than 8 characters (an id usually assigned during theme creation).





Table Name

Field Name

Begin Column

Definition

Valid Values

Descriptions

Gvl_pits.shp

Pit_q_id

 

Number, 3,0

Ex: 1,2,3,4,5,6,7.... 177,178,179,180

Gravel pit and quarry unique ID (1-180).

 

Source

 

Text, 16

Ex: ASIS, Air photo, Field Work, Soil, Topographic Map

This is were the gravel pit location came from or was observed (ex: soil - found on the soil map).

 

Type

 

Text, 16

Gravel Pit

Gravel Pit

 

 

 

 

Quarry

Quarry

 

 

 

 

Sand Pit

Sand Pit

 

ASIS_numbr

 

Number, 5,0

Ex: 0, 52001, 52003.. ..52042

Aggregate Source Information System Number (MN/DOT Database). 0 means that is does not have an ASIS number. 52xxx refers to Nicollet county (52) and xxx refers to the pit number. Use this field to join with dot_qual.dbf on sourcexx for the gravel pits that list the Source as "ASIS".

 

Size

 

Text, 8

Small

Refers to the relative size of the pit or quarry. Small pits are generally less than an acre or so. These pits are usually used by private land owners or for small jobs.

 

 

 

 

Medium

Generally less than 10 acres in size. These pits are used by land owners and for small construction jobs, they are generally used for short periods of time by contractors.

 

 

 

 

Large

These pits are generally greater than 10 acres and are typically used by commercial aggregate operators.

 

Thickness

 

Text, 8

Ex: >10, >15, >20, >25, >50, etc...

Gives the minimum thickness of the aggregate observed at the pit or quarry