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Waterbody profile

Official Water Board record · 2026 cycle

Canyon Lake (Railroad Canyon Reservoir)

Waterbody ID (WBID)
CAL8021100019990208151525
County / counties
Riverside
Regional Water Board
Regional Board 8 - Santa Ana Region
Waterbody type
Lake & Reservoir
Condition category
Category 4a — TMDL completed
Integrated Report cycle
2026

303(d) listings (3)

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
AmmoniaNutrients150569List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLLake Elsinore Watershed Nutrient TMDL
NutrientsNutrients69204List on 303(d) list (being addressed by USEPA approved TMDL)Original5B Addressed by USEPA-approved TMDLLake Elsinore Watershed Nutrient TMDL
Oxygen, DissolvedNutrients132508List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLLake Elsinore Watershed Nutrient 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
Sep 16, 2026, 10:57 PM UTC
Waterbody ID
CAL8021100019990208151525
CALWNUM
4802.110000, 4802.120000, 4802.320000
WBD code
180702020303, 180702020307
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
510.71 Acres

Derived facility associations

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

Derived
AMR Canyon Lake

Canyon Lake · Notice of Non-Applicability · 0.74 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

EVMWD Railroad Canyon WWTP Industrial Stormwater

Lake Elsinore · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

StaxUP Menifee

Menifee · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

StaxUP Menifee

Menifee · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Sun City Mini Storage

Sun City · Notice of Non-Applicability

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.