NWTRC Small Vessel-based Surveys in 2016 and 2018

HDR Environmental, Operations and Construction, Inc.

Dataset credit

The U.S. Navy Marine Species Monitoring Program


Primary contact Kristen Ampela HDR Environmental, Operations and Construction, Inc.
Secondary contact Cathy Bacon HDR Environmental, Operations and Construction, Inc.
Data entry Ei Fujioka Duke University



Data in this dataset represent marine mammal sightings recorded during opportunistic small-vessel surveys for Southern Resident Killer Whales (SRKW) performed in coastal waters of Washington and Oregon. Ten one-day surveys were performed between December 2016 and May 2018, in conjunction with surveys performed by researchers at Northwest Fisheries Science Center (NWFSC). Survey objectives included 1) determine where along the outer coast of Washington and Oregon the southern resident killer whales are occurring and/or foraging; 2) determine the prey selected by southern resident killer whales throughout their range, but particularly the coastal waters of the U.S., mainly from Cape Flattery to the Columbia River. Although SRKW were the focus of these surveys, information about location, behavior, and group size was collected for all marine mammal species encountered. Only one SRKW encounter was recorded as part of this project (with L-pod, on 18 February 2018). High-resolution images were collected for all species encounters for purposes of photo-identification. No project report was required for this task. All project data was also provided to NWFSC. Survey work was performed under HDR task order KB05 (IDIQ contract award N62470-15-D-8006, NAVFAC LANT).



Supplemental information

Static trackline data is available upon request.




This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
oidUnique ID number (generated by OBIS-SEAMAP)
objectidObject ID
altitudemAltitude in meters (blank)
areakm2Area in km2 (blank)
aspectslopeAspect slope (blank)
animalspeedAnimal speed (blank)
bearingBearing (blank)
bearingabsAbsolute bearing (blank)
behavioreventBehavior event
beaufortscaleBeaufort sea scale
beaufortscaleleftBeaufort sea scale at left side (blank)
beaufortscalerightBeaufort sea scale at right side (blank)
biopsyFlag whether biopsy was sampled (blank)
birdsFlag whether birds were observed (blank)
calvespresentFlag whether calves were present (blank)
countcalvesNumber of calves (blank)
countfemalesNumber of femals (blank)
countjuvenilesNumber of juvelines (blank)
countmalesNumber of males (blank)
countnewbornsNumber of new borns (blank)
counttotbestBest estimate of number of animals
counttotmaxMaximum estimate of number of animals
counttotminMinimum estimate of number of animals
countvescargoNumber of cargo vessels (blank)
countvesferriesNumber of ferries (blank)
countvesfishingNumber of fishing vessels (blank)
countvesmilitaryNumber of military vessels (blank)
countvesmotoryachtsNumber of yachts (blank)
countvessailingNumber of sailing vessels (blank)
countvesotherNumber of other vessels (blank)
cueSighingt cue (blank)
datetimeDate and time of the sighting at local time zone
depthDepth (blank)
depthsoundingdefinition not provided
dispmaxdefinition not provided
dispmindefinition not provided
distsightDistance to sighting (blank)
distsightperpPerpendicular distance to sighting (blank)
effortstatusEffort status (blank)
flightofdayFlight days (blank)
glareGlare (blank)
glareleftGlare at left side (blank)
glarerightGlare at right side (blank)
groupidGroup ID (blank)
headinganimalHeading of animals (blank)
headingplatmagneticdefinition not provided
headingplattruedefinition not provided
horizsundefinition not provided
latanimalLatitude of animals (blank)
latplatformLatitude of the platform in decimal degrees
legidLeg ID (blank)
legnotesLeg notes (blank)
legnumberLeg number (blank)
linearityLinearity (blank)
longanimalLongitude of animals (blank)
longplatformLongitude of the platform in decimal degrees
mitigationMitigation (blank)
mitigationtypeMitigation type (blank)
navydirectedlegdefinition not provided
observerThe observer who first sighted the animal (blank)
observeraftThe observer aft (blank)
observercenterThe observer center (blank)
observerforwardThe observer forward (blank)
observerleftThe observer left (blank)
observerrightThe observer right (blank)
observerrearleftThe observer rear left (blank)
observerrearrightThe observer rear right (blank)
oceanOcean (always Pacific)
opticstypeOptic type (blank)
ordnancedefinition not provided
percentcloudcoverCloud cover in percent (blank)
percentcloudcoverleftCloud cover at left side in percent (blank)
percentcloudcoverrightCloud cover at right side in percent (blank)
photoframesPhoto frame ID (blank)
photographerPhotographer (blank)
photosFlag whether photos were taken (blank)
picdefinition not provided
platformdeddefinition not provided
platformmodelPlatform model (blank)
platformspeedPlatform speed (blank)
platformtypePlatform type (always Vessel)
rangecomplexRange complex (always NWTT)
reactioninitInitial reaction (blank)
reactioninitcountdefinition not provided
reactionlaterReaction later (blank)
reactionlatercountdefinition not provided
recorderRecorder (blank)
recorderfocaldefinition not provided
reorientationratedefinition not provided
resolutiondefinition not provided
shoredistDistance to shore (blank)
sicdefinition not provided
sightingdetectionsensordefinition not provided
sightingendloedefinition not provided
sightingmethodSighting method (blank)
sightingmultidefinition not provided
sightingnotesSighting notes
sightingnumberSighting Number (blank)
sightingrelmovementdefinition not provided
sightingtimeendEnd time of sighting (blank)
sightingtrialloedefinition not provided
slopeSlope (blank)
sonardefinition not provided
spcscodeSpecies code by provider
spcsconfidenceConfidence of species identification (blank)
spcshauledoutdefinition not provided
spcsitisITIS Taxonomic serial number
spcsnmcomCommon name
spcsnmsciScientific name
surveyidSurvey ID
surveymodeSurvey mode (blank)
surveyobjectivedefinition not provided
surveypointSurvey point (blank)
surveytypeSurvey type (blank)
swellSwell (blank)
swelldirectionSwell direction (blank)
taggingFlag indicating whether tagging was made (blank)
taggingnotesTagging nodes (blank)
taggingtagnumberTagging number (blank)
taggingtagtypeTag type (blank)
theoconvhorzdefinition not provided
theoconvvertdefinition not provided
theorawhorzdefinition not provided
theorawvertdefinition not provided
vertangleorreticleVertical angle or reticle (blank)
vertsundefinition not provided
vesselsizedefinition not provided
vesseltypedefinition not provided
videoVideo (blank)
videographerVideographer (blank)
visibilityVisibility code (blank)
visibilityleftVisibility left (blank)
visibilityrightVisibility right (blank)
waveheightWave height (blank)
winddirectionWind direction (blank)
windspeedWind speed (blank)
geomGeometry field added by OBIS-SEAMAP
Marine mammals63
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin2017-05-03
Date, End2018-05-18
Temporal prec.111110
Latitude46.39 - 48.40
Longitude-125.60 - -124.10
Coord. prec.5 decimal digits
Data typeAnimal sighting
EffortYES (ID: 1969)
Traveled (km)0
Effort hours12,072
Contr. throughNavy
Sharing policy CC-BY (All)
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics