GRAVEL
PITS
DODGE COUNTY,
MINNESOTA
Field |
Description |
Main ID Information |
Metadata Updated 2007 |
Title |
Dodge County Aggregate
Resource Evaluation - Gravel Pits |
Filename |
Gvl_pits (ArcView Shapefile) |
Abstract |
This dataset consists
of location information about the gravel pits and quarries within Dodge
County. |
Place Keywords |
Dodge County, Minnesota |
Theme Keywords |
Gravel Pits, Quarries |
Time Period of
Content |
Fall 2001 – Spring 2002 |
Parent Theme |
NA |
Spatial Extent of
the Data |
Dodge County, Minnesota |
Contact Person |
Aggregate Resources
Mapping Program |
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 Dodge County. |
Progress |
Complete |
Currentness
Reference |
The gravel pits notes
during field work are from fall 2001 to spring 2002. The gravel pits digitized from 1:24000
USGS quadrangles are the same age as the quads – from 1962 to 1974, with two
quads photo revised in 1982 and one quad photo inspected in 1980. The gravel pits located from the Soil
Survey are from 1961, the date of the published Soil Survey. |
Maintenance
Frequency |
None planned |
Access Constraints |
NA |
Use Constraints |
NA |
Associated Data Sets |
County Aggregate Mapping
Program datasets for Dodge County, including data on sand and gravel
potential, crushed stone potential, field observations, rock piles, and test
pit quality data. |
Data Quality |
|
Attribute Accuracy |
|
Logical Consistency |
NA |
Completeness |
Described in “lineage”
below. |
Horizontal
Positional Accuracy |
These points were
captured from several different sources, including USGS 1:24000 quadrangles,
1:12000 USGS DOQs (from 1991), Natural Resources Conservation Service Soil Survey
maps, and the ASIS (Aggregate Source Information System) database from the
Minnesota Department of Transportation.
The points were digitized using Arcview, using onscreen digitizing. |
Vertical Positional
Accuracy |
NA |
Lineage |
These points were gathered from a variety of sources, some were digitized within a few meters, others were located on DOQs (Digital Orthophoto Quadrangles) and DRGs 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 |
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 |
15E |
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 |
128 kb |
Entities --
Attributes |
|
Entity-Attribute
Overview |
This dataset consists
of location information about the gravel pits and quarries within Dodge
County. This shapefile can be joined
to dotqual.dbf to get more information about the gravel pits that list the
Source as “MNDOT ASIS”. ArcView specific fields
include shape (i.e., feature type = point), area (0 for points), perimeter (0
for points), gvl_pits_ (unique id for point, assigned by the software),
gvl_pits_id (an id usually assigned during theme creation). |
Entity-Attribute
Detailed Citation |
Gravel pit specific
attributes are described in the table below. |
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.... 341, 342, 343, 344 |
Gravel pit and quarry
unique ID (1-344). |
|
Source |
|
Text, 16 |
Ex: MNDOT ASIS, Air photo, Field Work, Soil
Survey, Topographic Map, etc… |
This is where the
gravel pit location came from or was observed (ex: soil - found on the soil
map). |
|
Type |
|
Text, 16 |
Gravel Pit |
Gravel Pit |
|
|
|
|
Sand Pit |
Sand Pit |
|
|
|
|
Quarry |
Quarry |
|
Asis_num |
|
Number, 5,0 |
Ex: 0, 20041, 20029, 20030, etc… |
Aggregate Source Information
System Number (MN/DOT Database). An
empty field means that is does not have an ASIS number. 20Xxx refers to Dodge
County (20) and xxx refers to the pit number. Use this field to join with dot_qual.dbf 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 a couple of acres 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
landowners 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: 5-10, 15-20, ect… |
Gives the range of
thickness of the aggregate observed at the pit or quarry. |
|
Watertable |
|
Text, 8 |
Ex: >10, >20,
>25, 10, 25,<20, etc |
Describes the depth to
the watertable within a pit or quarry.
If 20 feet of gravel was exposed and there was no water table
encountered, then >20 was used. |