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Waterbody profile

Official Water Board record · 2026 cycle

Moss Landing Harbor

Waterbody ID (WBID)
CAB3060001419981214121135
County / counties
Monterey
Regional Water Board
Regional Board 3 - Central Coast Region
Waterbody type
Bay & Harbor
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (11)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
ArsenicMetals105677Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ChlorpyrifosPesticides83304Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Original5B Addressed by USEPA-approved TMDLLower Salinas River Chlorpyrifos and Diazinon TMDL
DDT (Dichlorodiphenyltrichloroethane)Pesticides83951List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
DieldrinPesticides105682Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
Indicator BacteriaPathogens70642List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
NickelMetals81073List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
Oxygen, DissolvedNutrients82605Do Not Delist from 303(d) list (TMDL required list)Original5A TMDL still requiredHigh
PCBs (Polychlorinated biphenyls)Toxic Organics105687Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
pHOther Cause105686Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredHigh
Sedimentation/SiltationSediment70643List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
ToxicityTotal Toxics105688Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLLower Salinas River Chlorpyrifos and Diazinon TMDL

Source & provenance

Agency
California State Water Resources Control Board
Report
Final 2026 California Integrated Report
Dataset
Appendix A — 2026 303(d) List of Impaired Waters
Imported
Aug 21, 2026, 12:44 AM UTC
Waterbody ID
CAB3060001419981214121135
CALWNUM
3305.100301, 3306.000004, 3306.000005, 3309.110000, 3309.120001
WBD code
180600150301
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

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Watershed
Assessed size
187.94 Acres

Facilities with an NAL exceedance for a listed pollutant (1)

Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.

Derived

Moss Landing Marine3 27I025816

Nickel · most recent exceedance RY 2022 · association: derived nearby in watershed

This is derived co-occurrence between a calculated NAL comparison and the official 303(d) listing for this waterbody. An NAL exceedance triggers Exceedance Response Actions under the permit; it is not a violation and does not establish that any facility caused or contributed to this impairment.

Derived facility associations

Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.

Derived
Central Coast Wood Fired Ovens LLC

San Juan Bautista · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Moss Landing Commercial Park

Moss Landing · Notice of Intent · 0.09 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Moss Landing Marine

Moss Landing · Notice of Intent · 0.07 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Moss Landing Power Plant

Moss Landing · Notice of Intent · 0.41 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Ocean Mist Farms

Castroville · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pick n pull Moss Landing 42

Moss Landing · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Sweet Earth Foods

Moss Landing · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Verdagy

Moss Landing · No Exposure Certification · 0.09 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Facility records are official Industrial General Permit registrations, but the association between a facility and this waterbody is derived geographically (proximity or shared HUC12 subwatershed) and is not a Water Board receiving-water determination. Where a permit carries a Water Board-stated TMDL requirement naming this water, it is listed separately above.