Watts Woodland Airport
Active WDID 5S57I002427 Woodland, Yolo County Region 5S · Central Valley (Sacramento)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Woodland, Yolo County
- Region 5S · Central Valley (Sacramento) · Location · Statewide map
- Receiving water
- Cache Creek (as reported by the facility)
- Evidence: candidate, awaiting review 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
- None
- Monitoring results Evidence: facility-reported
- 33 distinct results, 10 reporting years (2015 to 2025)
- Most recent sample Jan 05, 2026 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 0 inspections · 1 violation record · 1 enforcement action
- Counts as published in SMARTS; not a compliance determination · Details
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
Reported location Evidence: facility-reported
- Coordinates
- 38.6776, -121.86958
- Precision
- 4 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
- 17992 County Road 94B, Woodland 95695
- Regional Water Board
- 5S — Central Valley (Sacramento)
HUC12 watershed Evidence: spatial
- South Fork Ditch-Willow Slough HUC12 180201630203
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
- Watts Woodland Airport Inc
- Primary industry (SIC)
- 4581-Airports, Flying Fields, and Airport Terminal Services
- Application ID
- 202994
- NOI processed
- Apr 01, 1992
- Last certified
- Apr 24, 2015
- Facility size
- 90 Acres
- Impervious area
- 6 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 202994 | Industrial | Active | Apr 01, 1992 | — | Apr 24, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Cache Creek
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C1 name is only a prefix of official names
4 official waterbodies share this name; none is assigned without review.
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.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
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.
33 distinct measurements across 3 parameters, most recent sample Jan 05, 2026.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2025 | 3 | 3 | 0 | Jan 05, 2026 | Jan 05, 2026 |
| 2024 | 3 | 3 | 0 | Nov 25, 2024 | Nov 25, 2024 |
| 2023 | 3 | 3 | 0 | Jan 24, 2024 | Jan 24, 2024 |
| 2022 | 3 | 3 | 0 | Feb 28, 2023 | Feb 28, 2023 |
| 2021 | 3 | 3 | 0 | Dec 13, 2021 | Dec 13, 2021 |
| 2019 | 3 | 3 | 0 | Mar 18, 2020 | Mar 18, 2020 |
| 2018 | 3 | 3 | 0 | Nov 21, 2018 | Nov 21, 2018 |
| 2017 | 3 | 3 | 0 | Jan 08, 2018 | Jan 08, 2018 |
| 2016 | 6 | 3 | 0 | Oct 28, 2016 | Jun 08, 2017 |
| 2015 | 3 | 3 | 0 | Jan 05, 2016 | Jan 05, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Oil and Grease | mg/L | 11 | 10 | Jan 05, 2016 | Jan 05, 2026 | Results |
| pH | SU | 11 | 0 | Jan 05, 2016 | Jan 05, 2026 | Results |
| Total Suspended Solids (TSS) | mg/L | 11 | 0 | Jan 05, 2016 | Jan 05, 2026 | Results |
All results (33 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Jan 05, 2026 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1364365 | |
| Jan 05, 2026 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1364365 | |
| Jan 05, 2026 | Total Suspended Solids (TSS) | 27 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1364365 | |
| Nov 25, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1316451 | |
| Nov 25, 2024 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1316451 | |
| Nov 25, 2024 | Total Suspended Solids (TSS) | 9.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1316451 | |
| Jan 24, 2024 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1277756 | |
| Jan 24, 2024 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1277756 | |
| Jan 24, 2024 | Total Suspended Solids (TSS) | 12 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277756 | |
| Feb 28, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1232171 | |
| Feb 28, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1232171 | |
| Feb 28, 2023 | Total Suspended Solids (TSS) | 9.6 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1232171 | |
| Dec 13, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1174115 | |
| Dec 13, 2021 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1174115 | |
| Dec 13, 2021 | Total Suspended Solids (TSS) | 16 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1174115 | |
| Mar 18, 2020 | Oil and Grease | 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1104459 | |
| Mar 18, 2020 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 1104459 | |
| Mar 18, 2020 | Total Suspended Solids (TSS) | 21 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1104459 | |
| Nov 21, 2018 | Oil and Grease | < 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1028993 | |
| Nov 21, 2018 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Field | 1028993 | |
| Nov 21, 2018 | Total Suspended Solids (TSS) | 15 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1028993 | |
| Jan 08, 2018 | Oil and Grease | < 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 990175 | |
| Jan 08, 2018 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 990175 | |
| Jan 08, 2018 | Total Suspended Solids (TSS) | 8.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 990175 | |
| Jun 08, 2017 | Oil and Grease | < 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 935221 | |
| Jun 08, 2017 | pH | 7.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 935221 | |
| Jun 08, 2017 | Total Suspended Solids (TSS) | 26 | mg/L | Effluent | Qualifying Storm Event | A2540D | 935221 | |
| Oct 28, 2016 | Oil and Grease | < 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 909381 | |
| Oct 28, 2016 | pH | 6.5 | SU | Effluent | Qualifying Storm Event | pH_Paper | 909381 | |
| Oct 28, 2016 | Total Suspended Solids (TSS) | 6.4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 909381 | |
| Jan 05, 2016 | Oil and Grease | < 1.5 | mg/L | Effluent | Qualifying Storm Event | E1664A | 863524 | |
| Jan 05, 2016 | pH | 6 | SU | Effluent | Qualifying Storm Event | pH_Paper | 863524 | |
| Jan 05, 2016 | Total Suspended Solids (TSS) | 8.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 863524 |
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.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Mar 30, 2006 – Mar 30, 2006 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Mar 30, 2007 – Mar 30, 2007 | Oct 21, 2026 | All actions |
| Inspections | 0 | inspections, not findings | — | Oct 21, 2026 | |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, 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 (13 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 09, 2026 | Annual reports | 1335170 | Annual report 2025 | — | |
| Jul 01, 2025 | Annual reports | 1293973 | Annual report 2024 | — | |
| Jun 24, 2024 | Annual reports | 1243050 | Annual report 2023 | — | |
| Jul 11, 2023 | Annual reports | 1189044 | Annual report 2022 | — | |
| Jun 29, 2022 | Annual reports | 1112402 | Annual report 2021 | — | |
| Jun 23, 2021 | Annual reports | 1068406 | Annual report 2020 | — | |
| Jun 22, 2020 | Annual reports | 985642 | Annual report 2019 | — | |
| Jun 25, 2019 | Annual reports | 953183 | Annual report 2018 | — | |
| Jun 29, 2018 | Annual reports | 938599 | Annual report 2017 | — | |
| Jun 29, 2017 | Annual reports | 877823 | Annual report 2016 | — | |
| Jun 29, 2016 | Annual reports | 843710 | Annual report 2015 | — | |
| Mar 30, 2007 | Enforcement actions | 328483 | NOV (Notice of Violation) | Active | |
| Mar 30, 2006 | Violations | 527701 | Deficient Report | Violation | Report |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
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
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.