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Short Citation:
Alaska Fisheries Science Center, 2024: AFSC/NMML: Beluga whale Counts from Aerial Surveys in Cook Inlet, Alaska, 1993-2022,

Item Identification

Title: AFSC/NMML: Beluga whale Counts from Aerial Surveys in Cook Inlet, Alaska, 1993-2022
Short Name: AFSC/NMML: Beluga whale Counts from Aerial Surveys in Cook Inlet, Alaska, 1993-2022
Status: In Work
Creation Date: 1993

The National Marine Mammal Laboratory conducted aerial surveys to monitor the abundance and distribution of beluga whales in Cook Inlet, Alaska. This database contains the counts of beluga whale groups made by the aerial observers during surveys from 1993-2012, 2014, 2016, 2018, 2021 and 2022. Counts occurred concurrent with video collection during each pass near a beluga group.


Aerial observer counts are used to calculate median counts for each beluga group to provide a daily index for the population prior to calculating the abundance estimate. Observer counts corrected for perception and availability bias are also used in abundance estimates when video is not available.


Loaded by FGDC Metadata Uploader, batch 6774, 08-10-2015 16:24

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Taxonomy (FGDC:taxonomy)


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category
None aerial
None count

Spatial Keywords

Thesaurus Keyword
None Cook Inlet

Physical Location

Organization: National Marine Mammal Laboratory
City: Seattle
State/Province: WA
Country: United States

Data Set Information

Data Set Scope Code: Data Set
Data Presentation Form: Table (digital)
Distribution Liability:

The user is responsible for the results of any application of this data for other than its intended purpose.

NOAA denies liability if the data are misused.

Support Roles

Data Steward

CC ID: 227128
Date Effective From: 1993
Date Effective To:
Contact (Person): Shelden, Kim
Email Address:


CC ID: 212420
Date Effective From: 2015-08-10
Date Effective To:
Contact (Organization): National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD)
Address: NOAA/NESDIS E/OC SSMC3, 4th Floor, 1351 East-West Highway
Silver Spring, MD 20910-3282
Phone: (301) 713-3277

Metadata Contact

CC ID: 212418
Date Effective From: 2015-08-10
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address:


CC ID: 212421
Date Effective From: 2015-08-10
Date Effective To:
Contact (Organization): Alaska Fisheries Science Center (AFSC)
Address: 7600 Sand Point Way N.E., Building 4
Seattle, WA 98115
Email Address:
Phone: (206) 526-4000
Fax: (206) 526-4004
Business Hours: 0700-1700 Pacific Time

Point of Contact

CC ID: 212419
Date Effective From: 2015-08-10
Date Effective To:
Contact (Person): Angliss, Robyn
Address: 7600 Sand Point Way, NE
Seattle, WA 98115-6349
Email Address:
Phone: 206-526-4032
Fax: 206-526-6615
View Historical Support Roles


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 212417
W° Bound: -154
E° Bound: -149
N° Bound: 61.5
S° Bound: 59

Cook Inlet, Alaska

Extent Group 1 / Time Frame 1

CC ID: 212416
Time Frame Type: Range
Start: 1993
End: 2022

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available at NCEI:

Data Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

Data Use Constraints:

User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement

of NOAA/NMFS/AFSC as the source from which these data were obtained in any publications and/or other representations of these data is suggested.

Distribution Information

Distribution 1

CC ID: 238868
Download URL:
Distributor: National Centers for Environmental Information - Silver Spring, Maryland (NCEI-MD) (2015-08-10 - Present)

Cook Inlet beluga whale aerial count data.

File Type (Deprecated): csv (comma-separated values)
Distribution Format: CSV - Comma Separated Values (Text)



CC ID: 1224452
Name: Distribution of Belugas (Delphinapterus leucas) in Cook Inlet, Alaska, June 2021 and June 2022
URL Type:
Online Resource

AFSC Processed Report 2022-04


CC ID: 1224676
Name: Aerial Surveys, Distribution, Abundance, and Trend of Belugas (Delphinapterus leucas) in Cook Inlet, Alaska, June 2018
URL Type:
Online Resource

The National Marine Fisheries Service (NMFS) has conducted aerial surveys to estimate abundance of the beluga population in Cook Inlet, Alaska, each June, July, or both from 1993 to 2012, after which biennial surveys began in 2014. The current document presents survey results and subsequent analyses yielding an abundance estimate and population trend based on data collected during June 2018.

Data Quality

Quality Control Procedures Employed:

After each survey day, data were quality controlled by checking all hand entered information from that day including weather, sightings, species, group sizes, observer position, and comment data for errors.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: 0
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Unknown
Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: Unknown
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 Western Regional Support Center in Seattle, Washington, following a disruption.


Process Steps

Process Step 1

CC ID: 212424


Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Master CIB Aerial Obs Counts 1993_2022

Catalog Details

Catalog Item ID: 26317
GUID: gov.noaa.nmfs.inport:26317
Metadata Record Created By: Janice Waite
Metadata Record Created: 2015-08-10 16:23+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2024-01-15 12:08+0000
Metadata Record Published: 2018-11-27
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-11-27
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-11-27