← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Lockhart Gulch

Waterbody ID (WBID)
CAR3041204119990304141558
County / counties
Santa Cruz
Regional Water Board
Regional Board 3 - Central Coast Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (2)

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
Oxygen, DissolvedNutrients75729List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow
pHOther Cause78119List on 303(d) list (TMDL required list)Original5A TMDL still requiredLow

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
CAR3041204119990304141558
CALWNUM
3304.120401
WBD code
180600150202
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
2.77 Miles

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

David Bruce Winery3 44I013834

pH · most recent exceedance RY 2025 · association: derived watershed association

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
David Bruce Winery

Los Gatos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Granite Rock Co Quail Hollow

Felton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Mount Hermon Road Self Storage

Scotts Valley · Notice of Non-Applicability · 0.43 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

San Lorenzo Vly School District

Ben Lomond · Notice of Intent

derived_watershed_association

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.