Temescal Creek, Reach 2 (1400 ft. upstream of Magnolia Ave. to Lee Lake)
Not in 2026 Appendix A Waterbody ID CAR8012500020081204202614 River & Stream Region 8 · Santa Ana
At a glance
- Pollutants and stressors
- No Appendix A decisions
- Industrial stormwater facilities
- 1 report it as their receiving water Evidence: identification corroborated
- 100 within 1 km Evidence: geographic proximity
- Neither count establishes a discharge · Facilities
What a 303(d) listing means
The Clean Water Act section 303(d) list names waters that do not meet water quality standards for one or more pollutants or stressors. California publishes it in the Integrated Report; this page shows the 2026 decisions from Appendix A as published.
- A listing describes the condition of the waterbody. It does not identify which sources cause the impairment, and it does not by itself place a requirement on any particular facility.
- Listed waters do not all have the same status. The Integrated Report category says how an impairment is being addressed: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant.
- TMDL requirement status values (such as 5A or 5B) are shown exactly as published in Appendix A.
2026 listing status Evidence: State-published
- On the 2026 303(d) list
- No (2026 geometry only)
- Appendix A decisions
- 0
- Integrated Report category
- —
- Listing cycle
- 2026
- Regional Water Board
- 8 — Santa Ana
Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. A listing describes the condition of this waterbody, not of any facility.
Location
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Listing decisions and pollutants Evidence: State-published
No Appendix A decisions for this waterbody.
TMDL information Evidence: State-published
Appendix A records no TMDL requirement status for this waterbody.
This is TMDL information for the waterbody. It does not establish that a TMDL applies to any particular facility. Facility-specific TMDL requirements recorded in SMARTS appear on facility pages and are not linked to this waterbody until reviewed.
HUC12 watersheds
Published with the listing Evidence: publisher-reported
None published.
Overlapping the waterbody's shape Evidence: spatial
- Dawson Canyon-Temescal Wash 180702030602
- Bedford Wash-Temescal Wash 180702030604
- Main Street Wash-Temescal Wash 180702030605
Industrial stormwater facilities
Evidence: identification corroborated
Shows: the facility named this waterbody as its receiving water in SMARTS, and the name and the facility's location are consistent with it. Does not establish: a discharge pathway, a discharge of any pollutant, or a cause of the listing.
Evidence: geographic proximity
Shows: the facility's reported location is within 1 km of the waterbody's mapped shape. Does not establish: that the facility discharges to this waterbody, or any other relationship.
Report this waterbody as their receiving water Evidence: identification corroborated
| Facility | WDID | Status | Distance from reported location | Map |
|---|---|---|---|---|
| Maitri Rd Sand & Gravel | 8 33I030954 | Active | 1.7 km | map |
Receiving water reported by facility — waterbody identification corroborated by geographic evidence. 1 facility.
Within 1 km of a facility's reported location Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near this waterbody does not mean a facility discharges to it.
| Facility | WDID | Status | Distance | Map |
|---|---|---|---|---|
| Onyx Materials Corporation | 8 33I030971 | Active | 462 m | map |
| Altium Packaging | 8 33I030301 | Active | 463 m | map |
| Plastic Industries Inc | 8 33I023855 | Terminated | 468 m | map |
| International Paper | 8 33NEC015468 | Active | 477 m | map |
| Corona Clay Sand and Gravel Operation | 8 33IN602345 | Undetermined | 483 m | map |
| Pro Armor | 8 33NEC007686 | Active | 483 m | map |
| ACROMIL LLC | 8 33I027959 | Active | 486 m | map |
| BTL Machine Inc | 8 33I027769 | Terminated | 491 m | map |
| Liston Aluminum | 8 33I002316 | Terminated | 504 m | map |
| Gecko Alliance Pump Div | 8 33I022188 | Terminated | 509 m | map |
| Inland Empire | 8 33I000554 | Terminated | 518 m | map |
| Mission Rubber Co | 8 33I014220 | Active | 520 m | map |
| Corona Clay Recycling Plant | 8 33I025117 | Active | 524 m | map |
| Villa Park Trucking | 8 33I010571 | Terminated | 524 m | map |
| Polara Engineering, Inc | 8 33NEC003413 | Terminated | 524 m | map |
| Reg Composting Facility | 8 33I010780 | Terminated | 529 m | map |
| Truecast Concrete Prod | 8 33I013234 | Terminated | 549 m | map |
| Corona Clipper Inc | 8 33I022484 | Active | 553 m | map |
| Boone Int Inc | 8 33I017822 | Terminated | 564 m | map |
| Wheel Care Transportation | 8 33NNA002975 | No Action Required | 568 m | map |
| Wheel Care Transportation | 8 33NNA003436 | NONA Submitted | 568 m | map |
| Chroma Color | 8 33I031307 | Active | 572 m | map |
| Navcom Defense Electronics | 8 33NEC002303 | Terminated | 588 m | map |
| Spectra Color Inc | 8 33I022998 | Terminated | 604 m | map |
| JD Transport Inc | 8 33NNA001777 | No Action Required | 605 m | map |
| Holliday Rock Corona 41 | 8 33I031170 | Active | 614 m | map |
| C L Pharris Sand & Gravel Inc | 8 33I007330 | Terminated | 639 m | map |
| Gail Materials Inc | 8 33I018352 | Terminated | 649 m | map |
| IDI Riverside | 8 33NEC012209 | Active | 657 m | map |
| Anaco | 8 33I007278 | Terminated | 669 m | map |
| Corona Trucking | 8 33I006849 | Terminated | 701 m | map |
| Griswold Water Systems | 8 33NEC004222 | Terminated | 747 m | map |
| Corona Clipper | 8 33I001378 | Terminated | 750 m | map |
| Corona Clipper, Inc. | 8 33I015608 | Terminated | 750 m | map |
| ABC School Equipment Inc | 8 33NNA000449 | NOI Required | 790 m | map |
| Indiana Auto Wrecking | 8 33I004077 | Active | 795 m | map |
| Platinum Visual Solutions DBA ABC School Equipment | 8 33NEC014024 | Active | 799 m | map |
| Galleys Plus Custom Cabinets Incorporated | 8 33NEC007414 | Active | 819 m | map |
| SA Recycling | 8 33MR000093 | Active | 824 m | map |
| Promenade Prop | 8 33I010343 | Terminated | 844 m | map |
| All Shred | 8 33NEC014661 | Terminated | 848 m | map |
| Six Pac Recycling | 8 33MR000010 | Terminated | 877 m | map |
| El Sobrante Landfill | 8 33I000559 | Active | 886 m | map |
| Johns Manville | 8 33I002415 | Terminated | 897 m | map |
| Six Pac Recycling Corp | 8 33I020161 | Terminated | 916 m | map |
| TRM Manufacturing | 8 33I022608 | Active | 922 m | map |
| Humbertos Fountains | 8 33I022174 | Terminated | 925 m | map |
| Humbertos Fountains | 8 33NEC002163 | Active | 925 m | map |
| LT Transport Corp | 8 33NNA001597 | No Action Required | 982 m | map |
| ExtruMed Inc DBA Vesta DBA Vesta Thehmoplastics divisio DBA Lubrizol LifeSciences | 8 33NEC004474 | Active | 987 m | map |
100 facilities, nearest first. Page 2 of 2: previous
Sources and provenance
| Information | Source | Retrieved |
|---|---|---|
| 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 (facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1).
Integrated Report categories: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant.