Layer: Sub-basins (ID:6)

View In: Map Viewer

Name: Sub-basins

Display Field: sub_basin_name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

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Source Schema Changes Allowed: true

Views

Description: This data informs the statewide Floating Kelp Indicator and includes 177 floating kelp monitoring sites within 10 geographic sub-basins in Washington State. Each site is assessed for recent (5yr) and long-term trends and includes most recent (2024) and maximum extents layer of floating kelp (all floating kelp observed over the data record). Each sub-basin has an associated trend status, determined by assessing the collective long-term trends of floating kelp at sites within each basin. The primary statewide metric is floating kelp bed area evaluated at selected locations throughout the study area. The bed is defined as the area encompassing kelp tissues floating on the water surface, including small gaps between adjacent individuals. This metric was selected because it has the most extensive available data, temporally and spatially. The distance threshold for grouping adjacent individuals into beds varies among individual monitoring protocols, ranging from 8 to 25 m. The program also tracks other parameters at a subset of sites, including canopy area.Methods to delineate floating kelp vary slightly among groups within the monitoring alliance. Survey techniques include small boat surveys and aerial imagery collection and classification. Data collection is restricted to summer months, when floating kelp forests are at their greatest seasonal extent. To maximize kelp detection, surveys are optimally conducted during periods of low tide, slack currents, and calm weather.See our summary report for more information.

Copyright Text: This data is powered by The Kelp Forest Alliance of Washington State led by the Samish Indian Nation, Northwest Straits Commission and County Marine Resource Committees, and the Washington State Department of Natural Resources Nearshore Habitat Program. Data is compiled in partnership with the University of Washington: Friday Harbor Laboratories, Washington Sea Grant, and Marine Agronomics.

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Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

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Global ID Field:

Type ID Field: status

Fields:

OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
sub_basin_code (type: esriFieldTypeString, alias: sub_basin_code, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
sub_basin_name (type: esriFieldTypeString, alias: sub_basin_name, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
status (type: esriFieldTypeString, alias: status, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
tot_units_samp (type: esriFieldTypeInteger, alias: tot_units_samp, SQL Type: sqlTypeOther, nullable: true, editable: true)
lt_totloss (type: esriFieldTypeString, alias: lt_totloss, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
lt_inc (type: esriFieldTypeString, alias: lt_inc, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
lt_dec (type: esriFieldTypeString, alias: lt_dec, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
lt_nofk (type: esriFieldTypeString, alias: lt_nofk, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
lt_lim (type: esriFieldTypeString, alias: lt_lim, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
lt_notrend (type: esriFieldTypeString, alias: lt_notrend, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_totloss (type: esriFieldTypeString, alias: rec_totloss, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_inc (type: esriFieldTypeString, alias: rec_inc, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_dec (type: esriFieldTypeString, alias: rec_dec, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_nofk (type: esriFieldTypeString, alias: rec_nofk, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_lim (type: esriFieldTypeString, alias: rec_lim, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
rec_notrend (type: esriFieldTypeString, alias: rec_notrend, SQL Type: sqlTypeOther, length: 8000, nullable: true, editable: true)
fk_ha_prop (type: esriFieldTypeDouble, alias: fk_ha_prop, SQL Type: sqlTypeOther, nullable: true, editable: true)
nsh_min6_km (type: esriFieldTypeInteger, alias: nsh_min6_km, SQL Type: sqlTypeOther, nullable: true, editable: true)
shore_mhw_km (type: esriFieldTypeInteger, alias: shore_mhw_km, SQL Type: sqlTypeOther, nullable: true, editable: true)
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Types:

status: declines

status: concern

status: insufficient_data

status: stable

status: no_floating_kelp

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 4/23/2026 11:40:04 PM

Schema Last Edit Date: 4/23/2026 11:40:04 PM

Data Last Edit Date: 4/23/2026 11:40:04 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat