Sonoma Cutrer Vineyards

Active WDID 1 49I030937 Windsor, Sonoma County Region 1 · North Coast

At a glance

Permit Evidence: SMARTS record
Active Industrial
Notice of Intent (WDID code I) · Permits and applications
Location Evidence: facility-reported
Windsor, Sonoma County
Region 1 · North Coast · Location · Statewide map
Receiving water
Mark West Creek (as reported by the facility)
Evidence: not confirmed Details
Identified receiving water on the 2026 303(d) list
Not established
Shown only when the reported receiving water is identified and corroborated.
2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
1 waterbody; 1 on the 2026 303(d) list
Proximity only; not a discharge pathway · Nearby waterbodies
Monitoring results Evidence: facility-reported
57 distinct results, 2 reporting years (2024 to 2025)
Most recent sample Feb 11, 2026 · Monitoring
Compliance and enforcement records Evidence: SMARTS record
0 inspections · 0 violation records · 0 enforcement actions
Counts as published in SMARTS; not a compliance determination · Details
SMARTS TMDL records Evidence: SMARTS-reported
0 records
TMDL records

Each label shows where a statement comes from. How to read the labels.

Overview and location

Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby

Open this facility on the statewide map

Reported location Evidence: facility-reported

Coordinates
38.49898, -122.83232
Precision
5 decimal places
Shared point
No
Matches application record
same

Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.

Facility address
4401 Slusser Road, Windsor 95492
Regional Water Board
1 — North Coast

HUC12 watershed Evidence: spatial

  • Windsor Creek HUC12 180101100705

The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.

Permits and applications Evidence: SMARTS record

Current permit record

Permit type
Industrial
Application type
Notice of Intent (WDID code I)
Status
Active
Operator
Duckhorn Wine Co
Primary industry (SIC)
2084-Wines, Brandy, and Brandy Spirits
Application ID
576262
NOI processed
Dec 12, 2024
Last certified
Dec 09, 2024
Facility size
11.6 Acres
Impervious area
82 %

Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.

Permit history

Storm water applications for this WDID, newest first
ApplicationTypeStatusProcessedTerminatedCertified
576262 IndustrialActiveDec 12, 2024 —Dec 09, 2024

Every storm water application SMARTS records for this WDID, newest first (1).

Receiving water

Reported by the facility Evidence: facility-reported
Mark West Creek
Discharges directly / indirectly
Y / N (as answered in the permit application)

Evidence: not confirmed Not matchable to a single waterbody

Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.

Impaired waters and TMDLs

Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.

Nearby waterbodies Evidence: geographic proximity

Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.

Nearest 2026 Integrated Report waterbodies
Waterbody (2026 Integrated Report)Distance2026 303(d) listAppendix A decisions
Russian River HU, Middle Russian River HA, Mark West HSA, Windsor Creek and its tributaries CAR1142302020130919047080286 m listed4

Waterbodies within 1.0 km of the reported facility location. Method proximity/1.

SMARTS TMDL records Evidence: SMARTS-reported

No TMDL records for this facility in the SMARTS TMDL export.

Reported monitoring results Evidence: facility-reported

Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.

57 distinct measurements across 3 parameters, most recent sample Feb 11, 2026.

By reporting year

Distinct results by reporting year
Reporting year (July–June)Distinct resultsParametersWith several versionsFirst sampleLast sample
2025243 0 Sep 29, 2025Feb 11, 2026
2024333 0 Nov 11, 2024Jan 03, 2025

By parameter

Distinct results by parameter
ParameterUnitsMeasurementsBelow detectionFirst sampleLast sampleResults
Oil and Greasemg/L19 14Nov 11, 2024Feb 11, 2026 Results
pHSU19 0Nov 11, 2024Feb 11, 2026 Results
Total Suspended Solids (TSS)mg/L19 0Nov 11, 2024Feb 11, 2026 Results

All results (57 distinct rows)

Reported monitoring results, newest first
Sample dateParameterResultUnitsLocation typeEventMethodReportVersions
Feb 11, 2026 Oil and Grease DNQ 2.1 mg/L Effluent Qualifying Storm Event A5520B 1369208
Feb 11, 2026 Oil and Grease < 1.4 mg/L Effluent Qualifying Storm Event A5520B 1369208
Feb 11, 2026 Oil and Grease DNQ 1.7 mg/L Effluent Qualifying Storm Event A5520B 1369208
Feb 11, 2026 Oil and Grease DNQ 1.6 mg/L Effluent Qualifying Storm Event A5520B 1369208
Feb 11, 2026 pH 7.9 SU Effluent Qualifying Storm Event pH_Field 1369208
Feb 11, 2026 pH 7.6 SU Effluent Qualifying Storm Event pH_Field 1369208
Feb 11, 2026 pH 8.1 SU Effluent Qualifying Storm Event pH_Field 1369208
Feb 11, 2026 pH 7.7 SU Effluent Qualifying Storm Event pH_Field 1369208
Feb 11, 2026 Total Suspended Solids (TSS) 7 mg/L Effluent Qualifying Storm Event A2540D 1369208
Feb 11, 2026 Total Suspended Solids (TSS) 2.9 mg/L Effluent Qualifying Storm Event A2540D 1369208
Feb 11, 2026 Total Suspended Solids (TSS) 62 mg/L Effluent Qualifying Storm Event A2540D 1369208
Feb 11, 2026 Total Suspended Solids (TSS) 6.4 mg/L Effluent Qualifying Storm Event A2540D 1369208
Nov 05, 2025 Oil and Grease 5.3 mg/L Effluent Qualifying Storm Event A5520B 1359047
Nov 05, 2025 pH 8.1 SU Effluent Qualifying Storm Event pH_Field 1359047
Nov 05, 2025 Total Suspended Solids (TSS) 5.9 mg/L Effluent Qualifying Storm Event A2540D 1359047
Oct 01, 2025 Oil and Grease < 1.4 mg/L Effluent Qualifying Storm Event A5520B 1357657
Oct 01, 2025 pH 6.8 SU Effluent Qualifying Storm Event pH_Field 1357657
Oct 01, 2025 Total Suspended Solids (TSS) 19 mg/L Effluent Qualifying Storm Event A2540D 1357657
Sep 29, 2025 Oil and Grease < 1.4 mg/L Effluent Qualifying Storm Event A5520B 1356303
Sep 29, 2025 Oil and Grease 5.1 mg/L Effluent Qualifying Storm Event A5520B 1357619
Sep 29, 2025 pH 7.5 SU Effluent Qualifying Storm Event pH_Field 1356303
Sep 29, 2025 pH 7.2 SU Effluent Qualifying Storm Event pH_Field 1357619
Sep 29, 2025 Total Suspended Solids (TSS) 40 mg/L Effluent Qualifying Storm Event A2540D 1356303
Sep 29, 2025 Total Suspended Solids (TSS) 19 mg/L Effluent Qualifying Storm Event A2540D 1357619
Jan 03, 2025 Oil and Grease < 3.9 mg/L Effluent Qualifying Storm Event A5520B 1320210
Jan 03, 2025 Oil and Grease < 3.9 mg/L Effluent Qualifying Storm Event A5520B 1320210
Jan 03, 2025 Oil and Grease < 3.9 mg/L Effluent Qualifying Storm Event A5520B 1320210
Jan 03, 2025 Oil and Grease < 3.9 mg/L Effluent Qualifying Storm Event A5520B 1320210
Jan 03, 2025 pH 7.7 SU Effluent Qualifying Storm Event pH_Field 1320210
Jan 03, 2025 pH 7.9 SU Effluent Qualifying Storm Event pH_Field 1320210
Jan 03, 2025 pH 7.5 SU Effluent Qualifying Storm Event pH_Field 1320210
Jan 03, 2025 pH 8.1 SU Effluent Qualifying Storm Event pH_Field 1320210
Jan 03, 2025 Total Suspended Solids (TSS) 27 mg/L Effluent Qualifying Storm Event A2540D 1320210
Jan 03, 2025 Total Suspended Solids (TSS) 8.7 mg/L Effluent Qualifying Storm Event A2540D 1320210
Jan 03, 2025 Total Suspended Solids (TSS) 34 mg/L Effluent Qualifying Storm Event A2540D 1320210
Jan 03, 2025 Total Suspended Solids (TSS) 9.6 mg/L Effluent Qualifying Storm Event A2540D 1320210
Nov 20, 2024 Oil and Grease 5.6 mg/L Effluent Qualifying Storm Event A5520B 1319003
Nov 20, 2024 Oil and Grease 8.6 mg/L Effluent Qualifying Storm Event A5520B 1319003
Nov 20, 2024 pH 7.8 SU Effluent Qualifying Storm Event pH_Field 1319003
Nov 20, 2024 pH 7.9 SU Effluent Qualifying Storm Event pH_Field 1319003
Nov 20, 2024 Total Suspended Solids (TSS) 12 mg/L Effluent Qualifying Storm Event A2540D 1319003
Nov 20, 2024 Total Suspended Solids (TSS) 18 mg/L Effluent Qualifying Storm Event A2540D 1319003
Nov 13, 2024 Oil and Grease DNQ 4.7 mg/L Effluent Qualifying Storm Event A5520B 1319011
Nov 13, 2024 Oil and Grease 11 mg/L Effluent Qualifying Storm Event A5520B 1319011
Nov 13, 2024 Oil and Grease < 3.9 mg/L Effluent Qualifying Storm Event A5520B 1319011
Nov 13, 2024 pH 7.8 SU Effluent Qualifying Storm Event pH_Field 1319011
Nov 13, 2024 pH 7.7 SU Effluent Qualifying Storm Event pH_Field 1319011
Nov 13, 2024 pH 7.5 SU Effluent Qualifying Storm Event pH_Field 1319011
Nov 13, 2024 Total Suspended Solids (TSS) 20 mg/L Effluent Qualifying Storm Event A2540D 1319011
Nov 13, 2024 Total Suspended Solids (TSS) 37 mg/L Effluent Qualifying Storm Event A2540D 1319011

Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.

Compliance and enforcement records Evidence: SMARTS record

These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.

Compliance and enforcement records by type
Record typeRecordsAs publishedDatesRetrievedList
Violations0 0 Violation · 0 Potential (preliminary) · 0 Dismissed — Oct 21, 2026
Enforcement actions0 0 issued · 0 draft · 0 withdrawn, rescinded or superseded — Oct 21, 2026
Inspections0inspections, not findings — Oct 21, 2026
Annual reports2certified reports (contents not shown) 2024 – 2025 Oct 21, 2026 All reports
Water-quality-based corrective action reports0reports, by parameter — Oct 21, 2026

Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.

Chronological record history (2 records, newest first)
Compliance and enforcement records, newest first
DateRecordIDType or purposeStatus as publishedDetail
Jul 15, 2026 Annual reports 1341867 Annual report 2025 —
Jul 15, 2025 Annual reports 1316213 Annual report 2024 —

Sources and provenance

Sources behind this page
InformationSourceRetrieved or published
Permit, location, receiving-water textSMARTS Industrial Application Specific DataOct 20, 2026
Permit historySMARTS Storm Water ApplicationsOct 20, 2026
Monitoring resultsSMARTS Industrial Parameter DataOct 20, 2026
Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12)USGS2026-10-22
2026 California Integrated Report, Appendix A: 2026 303(d) List (final)SWRCB2026-10-22
Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0)SWRCB GIS2026-10-22
SMARTS TMDL requirementsSMARTS2026-10-21

Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.

How to read the evidence labels

Records are shown as published and are not compliance determinations. How geographic context is derived.