Short Citation:
Office for Coastal Management, 2021: Anchorage Areas,

Item Identification

Title: Anchorage Areas
Status: Completed
Publication Date: 2017-09-20

An anchorage area is a place where boats and ships can safely drop anchor. These areas are created in navigable waterways when ships and vessels require them for safe and responsible navigation. A variety of designations refer to types of anchorage areas or restrictions, or even to alerts of potential dangers within an area. Every boater and captain should be aware of the various types of areas. These data are intended for coastal and ocean planning. Not for navigation.


To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the National Environmental Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act.

Supplemental Information:

Bureau Code: 006:48, Program Code: 006:055


Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Human Dimensions > Environmental Governance/Management
ISO 19115 Topic Category oceans
None coastal
None planning
None renewable energy

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States of America
None Territorial Sea
None United States of America

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Entity Attribute Overview:

AnchorageType, name, CFR, RNC, date, location

Distribution Liability:

Data Set Credit: Bureau of Ocean Energy Management, NOAA Office for Coastal Management

Support Roles

Point of Contact

CC ID: 651175
Date Effective From: 2017-09-20
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address:
Phone: (843) 740-1202


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 651180
W° Bound: -178.306021
E° Bound: 179.370056
N° Bound: 71.232966
S° Bound: 5.876955

Extent Group 1 / Time Frame 1

CC ID: 651179
Time Frame Type: Discrete
Start: 2017-07

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 902735
Complex Object Present?: No
Composite Object Present?: No
Curve Object Present?: Yes
Point Object Present?: No
Solid Object Present?: No
Surface Object Present?: No

Reference Systems

Reference System 1

CC ID: 902736

Coordinate Reference System

CRS Type: Geographic 2D
EPSG Code: EPSG:4269
EPSG Name: NAD83
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

zip download

Data Access Constraints:


Data Use Constraints:

These data are intended for coastal and ocean use planning. Not for navigation.

Distribution Information

Distribution 1

CC ID: 706199
Download URL:
File Name: Anchorage Areas

zip download



CC ID: 651168
URL Type:
Online Resource


CC ID: 651170
URL Type:
Online Resource


CC ID: 651172
URL Type:
Online Resource

Technical Environment


Microsoft Windows, ArcGIS Pro

Data Quality



Horizontal Positional Accuracy:

Compiled to meet 10 meters horizontal accuracy at 95% confidence level

Completeness Report:


Conceptual Consistency:

These data are logically consistent



Anchorage Areas

CC ID: 651164
Contact Role Type: Originator
Contact Type: Organization
Contact Name: US Government Publishing Office, NOAA Office of Coast Survey
Publish Date: 2017-05-01
Extent Type: Discrete
Extent Start Date/Time: 2017-05
Citation URL:
Source Contribution:

Data from CFR, ENC and RNC were used to compile this dataset. | Type of Source Media: online

Process Steps

Process Step 1

CC ID: 651165

1. Go to, & and record all anchorage area info into a spreadsheet including lat/long data

2. Import sheet into ArcGIS, convert to xy coordinates, and export as a point feature class

3. Convert point feature class to polygon by connecting corner coordinates and joining attribute info

NOTE: Areas from the following locations were not included, as they are all inland locations:

Section 110.127 Lake Mohave and Lake Mead, NV and AZ

Section 110.127a Lake Powell, UT-AZ

Section 110.127b Flaming Gorge Lake, WY-UT

Section 110.72c Lake Murray, SC

4. Go to and download the following at full extent:

Approach_Anchor_Berth_area, Approach_Anchor_Berth_point

Approach_Anchorage_Area, Approach_Anchorage_Area_point

Coastal_Anchorage_Area, Coastal_Anchorage_Area_point

General_Anchorage_Area, General_Anchorage_Area_point

Harbour_Anchor_Berth_area, Harbour_Anchor_Berth_point

Harbour_Anchorage_Area, Harbour_Anchorage_Area_point



5. Import all of the polygon layers into a single feature class and the point layers into a separate feature class

6. Buffer the point features to 500 feet

7. Compare between the layers, removing duplicates, and compare to NOAA_RNC continuous raster at ArcGIS on as a guide

8. Union the polygon and point feature classes with the CFR feature class and merge and combine features where overlap occurs, again giving the CFR features the most importance

9. Fill in any missing attributes using RNC info

10. Delete all superfluous fields

11. Check geometry and project data into WGS 1984 Auxiliary Sphere

Process Date/Time: 2017-06-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) AnchorageAreas

Catalog Details

Catalog Item ID: 48849
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 15:55+0000
Metadata Record Last Modified By: Daniel Martin
Metadata Record Last Modified: 2020-04-18 14:12+0000
Metadata Record Published: 2018-02-08
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-02-09