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) St. Paul, MN 55155-4045 |
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 |