DLG-F HYDROGRAPHY, 1999
SCOPE OF WORK
PROPOSED ACTIVITIES
The Contractor will:
1. Provide all necessary personnel, equipment, and facilities required to produce a seamless statewide hydrographic database to USGS DLG-F standards in ESRI data format. Technical abstract and collection techniques detailed in Attachment B.
2. Provide completed DLG-F data sets to the Georgia GIS Data Clearinghouse for review and acceptance. The following ESRI coverages will be provided for each county listed in the delivery schedule (Attachment D):
a. Hydro_Lines
b. Hydro_Polygons
3. Adhere to the “Geographic Information Systems Standards and Guidelines for the state of Georgia.”
4. Adhere to the feature content documented in the National Mapping Program’s Technical Instructions, Part 2 Hydrography, “Standards for Hydrography Dataset – High Resolution,” with modifications approved by the GIS Coordinating Committee’s Data Development TWG. Attachment C defines the technical specifications of the data features and attribution to be collected.
5. Submit quarterly progress reports summarizing base map activities.
The ITPC will:
1. Provide to the Contractor on request current
versions of all relevant standards.
ATTACHMENT B
TECHNICAL ABSTRACT
When the Georgia DOT started a digital automated mapping program in 1993, it captured many valuable layers of spatial information that could be integrated into a statewide GIS Base Map. The hydrographic layer captured by Georgia DOT was derived from the 1:24,000-scale USGS quadrangle maps. Mylar color quadrangle separates were purchased from the USGS, scanned, vectorized, georeferenced, edge matched, tiled by county, and added to the digital map library. QA/QC has been performed by both the Cartographic Unit of the Georgia Department of Transportation and mapping staff at the Office of Information Technology Outreach Services, University of Georgia.
Georgia has since acquired statewide DOQ coverage in cooperation with the USGS. By using DOQ imagery, features in the digital map library can adjusted from the 1:31,680-scale feature representation to the 1:12,000-scale DOQQ image. With these resources available, the state now looks ahead to an Innovative Partnership with the USGS to photo-revise and update the feature
and attribute content for the core base map.
Technical
Description of Wetlands polygon
vector data
Abstract - County tiled polygons and lines representing lakes, ponds, islands, reservoirs, and swamps/marshes.
Source Graphic - Original digitization from USGS “blue layer” color separates (1:24,000-scale mylar source document). Photo-revision to 1993 USGS Digital Orthophoto Quarter Quadrangles (1:12,000-scale digital image) has been performed for some features in the Wetlands layer. The approximate horizontal accuracy of photo-revised features is 33.3-ft., assuming the source imagery meets National Map Accuracy Standards for 1:12,000. Features which have not been photo-revised have an approximate horizontal accuracy of 40-ft., assuming the USGS color separates meet National Map Accuracy Standards for 1:24,000. All feature coordinates are stored in UTM meters on NAD83.
Wetlands layer data processing summary
Historical - Original mylar, 1:24,000-scale “blue layer” color separates were scanned at 400dpi resolution with an Intergraph Eagle large format scanner. Initial vectorization was performed using GENASYS’ Genarave raster to vector conversion software. Features were later converted to ESRI’s Arc/Info (Solaris versions 6.x through 7.x) software. The Wetlands layer was initially registered to Geographic Coordinates and later projected to UTM NAD83 meters with respect to the appropriate UTM zone (16 or 17 in Georgia).
Arc/Info coverages were plotted to scale and overlaid on the source mylar for QA/QC of the original vectorization. 7.5 Minute Quadrangle tiled coverage features were edge-matched to adjacent features using Arcedit snapping and link adjustment utilities. QA/QC has been performed by both the Cartographic Unit of the Georgia Department of Transportation and mapping staff at the Office of Information Technology Outreach Services, University of Georgia. The QA/QC process relies heavily on scale check-plotting and on-screen visual examination of feature attributes and alignment using Arcview 3.0. Coverages are in Arc/Info 7.04 double precision format.
Proposed - Under this agreement, shorelines of waterbody features in the Wetlands layer will be adjusted from the 1:24,000-scale feature representation to the 1:12,000-scale DOQQ image utilizing rules outlined in the USGS’ NMD Technical Criteria for Digital Revision and Product Generation: 1:24,000-Scale Digital Line Graphs and Quadrangle Maps. Feature updates, which were excluded in previous DOT updating efforts, will be added to reflect the content of the DOQs. In the update process, new features will digitized on-screen using a USGS Digital Orthophoto Quarter Quadrangle base. Existing water body features will be photo-revised by digitizing the feature from the photography. QA/QC will be performed by both the Office of Information Technology Outreach Services, University of Georgia, and the USGS. The QA/QC process will rely heavily on 1:24,000-scale checkplots and on-screen visual examination of feature attributes and alignment using Arcview 3.0. The Wetlands layer will be made available to the USGS in Arc/Info export format of version 7.1.1 double precision coverages. Metadata for the Wetlands layer will document specifically which digital capture and/or update methodology was utilized for a given Wetlands feature.
Technical
Description of River line vector data
Abstract - County tiled lines representing rivers, streams, shorelines, watercourses and artificial flow paths.
Source Graphic - Original digitization from USGS “blue layer” color separates (1:24,000-scale mylar source document). Photo-revision to 1993 USGS Digital Orthophoto Quarter Quadrangles (1:12,000-scale digital image) has been performed for some features in the River layer. The approximate horizontal accuracy of photo-revised features is 33.3-ft., assuming the DOQ imagery meets National Map Accuracy Standards for 1:12,000. Features which have not been photo-revised have an approximate horizontal accuracy of 40-ft., assuming the USGS color separates meet National Map Accuracy Standards for 1:24,000. All feature Coordinates are stored in UTM meters on NAD83.
River layer data processing summary
Historical - Original mylar, 1:24,000-scale “blue layer” color separates were scanned at 400dpi resolution with an Intergraph Eagle large format scanner. Initial vectorization was performed using GENASYS’ Genarave raster to vector conversion software. Features were later converted to ESRI’s Arc/Info (Solaris versions 6.x through 7.x) software. The River layer was initially registered to Geographic Coordinates and later projected to UTM NAD83 meters with respect to the appropriate UTM zone (16 or 17 in Georgia). Coverages were plotted to scale and overlaid on the source mylar for QA/QC of the original vectorization. 7.5 Minute Quadrangle tiled coverage features were edge-matched to adjacent features using Arcedit snapping and link adjustment utilities. QA/QC has been performed by both the Cartographic Unit of the Georgia Department of Transportation and mapping staff at the Office of Information Technology Outreach Services, University of Georgia. The QA/QC process relies heavily on 24,000-scale check-plotting and on-screen visual examination of feature attributes and alignment using Arcview 3.0. Coverages are in Arc/Info 7.04 double precision format.
Proposed - Under this agreement, shorelines of river features in the River layer will be adjusted from the 1:24,000-scale feature representation to the 1:12,000-scale DOQQ image utilizing rules outlined in the USGS’ NMD Technical Criteria for Digital Revision and Product Generation: 1:24,000-Scale Digital Line Graphs and Quadrangle Maps. Creek and stream features depicted as single centerlines at 1:24,000-scale will not be photo-revised. Feature updates, which were excluded in previous DOT updating efforts, will be added to reflect the content of the DOQs. In the update process, new features will digitized on-screen using a USGS Digital Orthophoto Quarter Quadrangle base. Existing features will be photo-revised by digitizing the feature from the photography. Stream segments and artificial paths will be flipped (if necessary) to match the direction of stream flow. Stream segments will also be adjusted so they match the exit points of Hydrologic Unit Code (HUC) basins (using 1:24,000-scale HUCs where available).
QA/QC will be performed by both the Office of Information Technology Outreach Services, University of Georgia, and the USGS. The QA/QC process will rely heavily on 1:24,000-scale check plots and on-screen visual examination of feature attributes and alignment using Arcview 3.0. The River layer will be made available to the USGS in Arc/Info export format of version 7.1.1 double precision coverages. Metadata for the River layer will document specifically which digital capture and/or update methodology was utilized for a given feature.
ATTACHMENT C
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December 18, 1998
DLG-F Feature: |
Area of Complex Channels |
||||
|
Definition: |
An
area where a stream or river flows in an intricate network of interlacing
channels. |
||||
|
Feature Classes: |
Area |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
corresponding hydrologic feature. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Artificial Path |
||||
|
Definition: |
An
artificial transport path through an open water body that provides
connectivity for stream networking. |
||||
|
Feature Classes: |
Line |
||||
|
Coverage Name: |
HY_LINE |
||||
|
Attribute Table: |
HY_LINE.AAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
Feature Type |
FEATURE_ TYPE |
Character 25 |
Canal/Ditch Lake/Pond Reservoir Stream/River Swamp/Marsh |
The type of 2-D feature
through which the artificial path flows. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
corresponding 2-D feature. |
|
|
Class |
CLASS |
Character 10 |
Major Minor |
Major = stream is part of the
RF1 database. Minor = stream is not part of
the RF1 database. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Canal/Ditch |
||||
|
Definition: |
An
artificial open waterway constructed to transport water, to irrigate or drain
land, to connect two or more bodies of water, or to serve as a waterway for
watercraft. |
||||
|
Feature Classes: |
Line Area |
||||
|
Coverage Name: |
HY_LINE HY_POLY |
||||
|
Attribute Table: |
HY_LINE.AAT HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
Feature Type |
FEATURE_TYPE |
Character 25 |
Aqueduct Unspecified |
Aqueduct Unspecified |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
corresponding hydrologic feature. |
|
|
Class |
CLASS |
Character 10 |
Major Minor |
Major = stream is part of the
RF1 database. Minor = stream is not part of
the RF1 database. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Closure |
||||
|
Definition: |
An
artificial line segment used to close polygon features where no natural
shoreline occurs. Necessary for
maintaining polygon topology. |
||||
|
Feature Classes: |
Line |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.AAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Connector |
||||
|
Definition: |
A
known, but nonspecific, connection between two nonadjacent network segments. |
||||
|
Feature Classes: |
Line |
||||
|
Coverage Name: |
HY_LINE |
||||
|
Attribute Table: |
HY_LINE.AAT |
||||
|
DLG-F Attribute |
Arc/Info Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Class |
CLASS |
Character 10 |
Major Minor |
Major = stream is part of the
RF1 database. Minor = stream is not part of
the RF1 database. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Estuary |
||||
|
Definition: |
The
lower end of a river, or a semienclosed coastal body of water with access to
the open ocean, which is affected by the tides and where fresh and salt water
mix. |
||||
|
Feature Classes: |
Area |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the lake
or pond. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Lake/Pond |
||||
|
Definition: |
A
standing body of water with a predominately natural shoreline surrounded by
land. |
||||
|
Feature Classes: |
Area |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the lake
or pond. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Pipeline |
||||
|
Definition: |
A
closed conduit, with pumps, valves and control devices, for conveying fluids,
gases, or finely divided solids. |
||||
|
Feature Classes: |
Line |
||||
|
Coverage Name: |
HY_LINE |
||||
|
Attribute Table: |
HY_LINE.AAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
Feature Type |
FEATURE_TYPE |
Character 25 |
Aqueduct General Case Penstock Siphon |
Aqueduct General Case Penstock Siphon |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
corresponding hydrologic feature. |
|
|
Class |
CLASS |
Character 10 |
Major Minor |
Major = stream is part of the
RF1 database. Minor = stream is not part of
the RF1 database. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Reservoir |
||||
|
Definition: |
A
constructed basin formed to contain water or other liquids. |
||||
|
Feature Classes: |
Area |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
reservoir. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Shoreline |
||||
|
Definition: |
A
naturally occurring line of contact between a body of water and the land. |
||||
|
Feature Classes: |
Line |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.AAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
Feature Type |
FEATURE_TYPE |
Character 25 |
Bay/Inlet Canal/Ditch Estuary Lake/Pond Reservoir Swamp/Marsh Stream/River Sea/Ocean |
Bay/Inlet
= shoreline of a bay or inlet. Canal/Ditch
= shoreline of a canal or ditch (for canals depicted as area features). Estuary
= shoreline of an estuary. Lake/Pond
= shoreline of a lake or pond. Reservoir
= shoreline of a reservoir. Swamp/Marsh = shoreline of a
swamp or marsh. Stream/River = shoreline of a
stream or river (for rivers depicted as area features). Sea/Ocean = shoreline of a
sea or ocean. See note below table. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
Note: Where a shoreline
occurs between two different area features, the feature type will be assigned
using the following order of precedence:
Sea/Ocean, Bay/Inlet, Estuary, Lake/Pond, Reservoir, Stream/River,
Canal/Ditch, and Swamp/Marsh.
DLG-F Feature: |
Stream/River |
||||
|
Definition: |
A
body of flowing water. |
||||
|
Feature Classes: |
Line Area |
||||
|
Coverage Name: |
HY_LINE HY_POLY |
||||
|
Attribute Table: |
HY_LINE.AAT HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
Feature Type |
FEATURE_TYPE |
Character 25 |
Intermittent Perennial |
Intermittent = stream
identified as intermittent on USGS 7.5-minute quadrangle map. Perennial = stream identified
as perennial on USGS 7.5-minute quadrangle map. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state
containing the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the
corresponding hydrologic feature. |
|
|
Stream Class |
CLASS |
Character 10 |
Major Minor |
Major = stream is part of the
RF1 database. Minor = stream is not part of
the RF1 database. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DLG-F Feature: |
Swamp/Marsh |
||||
|
Definition: |
A
non-cultivated, vegetated, area that is inundated or saturated for a
significant part of the year. The
vegetation is adapted for life in saturated soil conditions. |
||||
|
Feature Classes: |
Area |
||||
|
Coverage Name: |
HY_POLY |
||||
|
Attribute Table: |
HY_POLY.PAT |
||||
|
DLG-F Attribute |
Arc/Info
Item |
Data Type |
Attribute
Domain |
Definition |
|
|
Feature |
FEATURE |
Character 25 |
Alphanumeric |
The name of the DLG-F
feature. |
|
|
Feature ID |
FEATURE_ID |
Character 10 |
Alphanumeric |
Unique permanent feature
ID. |
|
|
State FIPS Code |
STATE_FIPS |
Character 2 |
2-digit integer |
FIPS code of the state containing
the feature. |
|
|
County FIPS Code |
COUNTY_FIPS |
Character 3 |
3-digit integer |
FIPS code of the county
containing the feature. |
|
|
Hydrologic Unit Code |
HUC |
Character 8 |
8-digit integer |
The 8-digit hydrologic unit
code (HUC) of the basin containing the feature. |
|
|
Name |
NAME |
Character 32 |
Alphanumeric |
The place name of the lake
or pond. |
|
|
Source |
SOURCE |
Character 32 |
Alphanumeric |
Source data from which the
feature was captured. |
|
|
Editor |
EDITOR |
Character 32 |
Alphanumeric |
Entity that performed feature
updates. |
|
|
Source Date |
SOURCE_DATE |
Date |
Date |
Date of the source data. |
|
|
Feature Modification Date |
FEAT_MOD_DATE |
Date |
Date |
Date when feature was last
updated. |
|
DELIVERY SCHEDULE
|
Delivery Quarter / Month |
Quad-area (7.5 minute quadrangles contained within the county
line). |
|
|
|
1st Quarter, September 1999 |
275 |
|
|
|
2nd Quarter, December 1999 |
275 |
|
|
|
3rd Quarter, March 2000 |
275 |
|
|
|
4th Quarter, June 2000 |
297 |
|
|
|
|
|
|
|
|
Total
Quadrangle Equivalents |
1,122 |
||