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Short Citation:
Alaska Regional Office, 2024: AKRO/SF: Blend System,

Item Identification

Title: AKRO/SF: Blend System
Short Name: Blend System
Status: Completed

The Blend was the system used by the NMFS Alaska Regional Office to monitor groundfish catch from 1991 until 2002. The Blend system combined data from industry production reports and observer reports to make the best, comprehensive accounting of groundfish catch. These data were used to manage quotas for groundfish in the Gulf of Alaska, Bering Sea, and Aleutian Islands. The blend catch data were also used as the basis for computing estimates of prohibited species bycatch. Prohibited species include Pacific halibut, salmon, herring, and crabs. Blend data were used for numerous regional and national reports, fishery stock assessments, and analysis of fishery management plans.

The Blend system used a combination of industry reports and observer data. For shoreside processors, Weekly Production Reports (WPR) submitted by industry were considered the best source of data for retained groundfish landings. All fish delivered to shoreside processors were weighed on scales, and these weights were used to account for retained catch. Observer data from catcher vessels provided the best data on at-sea discards of groundfish by vessels delivering to shoreside processors. Discard rates from these observer data were applied to the shoreside groundfish landings to estimate total at-sea discards from both observed and unobserved catcher vessels. For observed catcher/processors and motherships, the WPR and the Observer Reports recorded estimates of total catch (retained catch plus discards). If both reports were available, the Blend System selected one of them for incorporation into the catch database. If the vessel was unobserved, only the WPR was available.

In 2003, the Catch Accounting Sytem was implemented and took advantage of industry reports at a more detailed level, especially from shoreside processors. The Blend system was based on weekly data from processors and was not capable of accounting for some management programs -- including cooperatives, sideboards, complex seasonal allocations, Harvest Limit Area quotas, and quotas assigned to vessels of a particular size class. The Catch Accounting System replaced the Blend as the tool used by the National Marine Fisheries Service to estimate total catch in the groundfish fisheries off Alaska.


The Blend was the system used by the NMFS Alaska Regional Office to monitor groundfish catch from 1991 until 2002.


Theme Keywords

Thesaurus Keyword
None at-sea discard
None catch accounting
None catch estimation
None commercial fisheries catch
None fishery-dependent data
None groundfish
None total catch

Spatial Keywords

Thesaurus Keyword
None Alaska
None Aleutian Islands
None Bering Sea
None Gulf of Alaska
None North Pacific

Physical Location

Organization: Alaska Regional Office
City: Juneau
State/Province: AK
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Oracle Database
Data Presentation Form: Table (digital)

Support Roles

Data Steward

CC ID: 228910
Date Effective From: 2005
Date Effective To:
Contact (Person): Mondragon, Jennifer
Address: PO Box 21668
Juneau, AK 99802
Email Address:
Phone: (907)586-7010
Fax: (907)586-7465


CC ID: 228908
Date Effective From: 1992
Date Effective To:
Contact (Organization): Alaska Regional Office (AKRO)
Address: 709 W. 9th St, P.O. Box 21668
Juneau, AK 99802-1668
Phone: (907)586-7202
Business Hours: 8:00 am - 4:30 pm, Mon-Fri.
Contact Instructions:

Contact Sustainable Fisheries Division (907) 586-7202 #3

Metadata Contact

CC ID: 228909
Date Effective From: 2014
Date Effective To:
Contact (Person): Tide, Cathy
Address: 709 W. 9th St, P.O. Box 21668
Juneau, AK 99802-1668
Email Address:

Point of Contact

CC ID: 45733
Date Effective From: 2005
Date Effective To:
Contact (Person): Mondragon, Jennifer
Address: PO Box 21668
Juneau, AK 99802
Email Address:
Phone: (907)586-7010
Fax: (907)586-7465
Contact Instructions:

Phone or Email


Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 209728
W° Bound: -180
E° Bound: -130
N° Bound: 72
S° Bound: 50

Alaska, North Pacific, Bering Sea/Aleutian Islands, BSAI, Gulf of Alaska, GOA

Extent Group 1 / Time Frame 1

CC ID: 209727
Time Frame Type: Range
Start: 1991
End: 2002

Access Information

Security Class: Sensitive
Data Access Procedure:

Access to sensitive data shall only be granted to an individual that meets certain criteria. Access can only be granted to an individual if a signed and effective Confidentiality Agreement, Data Access Sharing Agreement, Memorandum of Understanding, Standard Statement of Nondisclosure, or similar agreement is in place. These signed agreements shall indicate that individuals have reviewed and understand the provisions in the manual governing the legal use of sensitive data. The signed agreements are maintained by the Alaska Regional Records office. The name of each individual that has signed a statement of nondisclosure for using sensitive data will be added to the Alaska Region list of authorized confidential data users.

Data Access Constraints:

The Blend data are sensitive under the Magnuson-Stevens Fishery Conservation and Management Reauthorization Act (2007) and can only be shared with authorized persons or in summary format for public dissemination.

Distribution Information

Distribution 1

CC ID: 267605
Download URL:

Catch reports derived from Blend system from 1993-2002 available online.



CC ID: 228927
URL Type:
Online Resource

The NMFS Alaska Region Sustainable Fisheries home page. From this page there is access to information bulletins, catch reports and statistics, harvest specifications, fishery regulations, management programs, and staff contact information.


CC ID: 228928
URL Type:
Online Resource

The NMFS Alaska Region Catch Accounting System home page.

Data Quality

Quality Control Procedures Employed:

Production data submitted by fax were reviewed by NMFS staff prior to data entry. Processors and vessels were contacted for clarification on missing or questionable data. Source data were also validated against business rules when they were loaded into NMFS' Oracle working tables and transferred into final tables. Exceptions were flagged that did not meet business rule requirements.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: Yes
Approximate Delay Between Data Collection and Dissemination: This is a legacy system and data collection no longer occurs.
Actual or Planned Long-Term Data Archive Location: Other
If World Data Center or Other, Specify: National Archives and Records Administration
Approximate Delay Between Data Collection and Archiving: 35 days
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Alaska Region in Juneau, Alaska, following a disruption.


Lineage Statement:

The Blend used a combination of industry reports and onboard observer information to provide an estimate of total catch and bycatch. Industry reported data consisted of shoreside and at-sea processed product amounts (production reports).

Production report data were submitted by fax or electronically as files from email attachments. Data submitted by fax were sorted and data entered by NMFS staff into the NMFS Alaska Region database. Data submitted as files in email attachments were uploaded into the NMFS Alaska Region database.

Observer data were collected by the Alaska Fisheries Science Center (AFSC) using a stratified sampling design. Data were extracted from the AFSC observer program database using the Observer Interface and imported into the Alaska Region database.

Catalog Details

Catalog Item ID: 11812
GUID: gov.noaa.nmfs.inport:11812
Metadata Record Created By: Jennifer Mondragon
Metadata Record Created: 2012-02-23 14:13+0000
Metadata Record Last Modified By: Jennifer Mondragon
Metadata Record Last Modified: 2023-02-16 18:42+0000
Metadata Record Published: 2015-12-24
Owner Org: AKRO
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2015-12-24
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2016-12-24