Title 11 — HEALTH AND SAFETY›Division 3 — MISCELLANEOUS REGULATIONS
Los Angeles County Municipal Code Ch. 11.60 Floodways, Water Surface Elevations, and Areas of Special Flood Hazard
Los Angeles County Municipal Code · 2026-09 edition · updated 2026-10-04 · Los Angeles County
Cite as: Los Angeles County Municipal Code Chapter 11.60 · Text as of 2026-10-04
11.60.010 - Establishment.¶
Floodways and water surface elevations are established over those lands subject to a severe flood hazard by reason of inundation, overflow, erosion or deposition of debris.
(Ord. 12114 § 1, 1980.)
11.60.020 - Areas Designated—Provisions Added by Reference.¶
The following floodways are added by reference, together with all maps, water surface elevations, and provisions pertaining thereto:
| Floodway Name | Floodway Map No. |
|---|---|
| Oak Springs Canyon | 382-ML1 |
| Placerita Canyon | 342-ML4 |
| San Martinez-Chiquito | 387-ML9 and ML10 |
| Hasley Canyon | 388-ML1, ML2, and ML3 |
| Newhall Creek | 340-ML9 |
| Quigley Canyon | 385-ML1 |
| Railroad Canyon | 386-ML1 |
| Violin Canyon | 39-ML1 Revised June 25, 1985, and ML2 |
| Mint Canyon | 366-ML9, ML10, 366-ML11, 366-ML12, 366-ML13, 366 ML14, 366-ML15, 366-ML16, 366-ML17, 366-ML18, 366 - ML19, 366-ML20 |
| Plum Canyon | 391-ML2 and ML3 |
| Triunfo Canyon | 154-ML1 and ML2 |
| Zuma Canyon | 413-ML1, ML2, and ML3 |
| Lobo Canyon | 425-ML1, ML2, and ML3 |
| Texas Canyon | 389-ML1 |
| La Sierra Canyon | 424-ML1 and 424-ML2 |
| Las Virgenes | 361-ML2, 361-ML3, and 361-ML4 |
| Haskell Canyon | 341-ML1 and ML2 |
| Vasquez Canyon | 390-ML1 and ML2 |
| Cheeseboro | 422-ML9 and 422-ML10 |
| Palo Comado | 423-ML1 |
| Stokes Canyon | 419-ML1 and 419-ML2 |
| Solstice Canyon | 416-ML1 and 416-ML2 |
| Castaic Creek | 335-ML1 through 335-ML4 |
| Lopez Canyon | 102-ML8 and 102-ML9 |
| Agua Dulce Canyon | 392-ML3, 392-ML4, 392 -ML5, 392-ML6, 392-ML7, 391- ML8 and 392-ML9 |
| Liberty Canyon | 420-ML and 420-ML2 |
| Medea Creek | 370-ML9, 370-ML10 and 370-ML11 |
| Little Tujunga Canyon | 12-ML2 and 12-ML3 |
| Gavin Canyon—Rice Canyon | 394-ML3 |
| Santa Clara River | 43-ML23, 43-ML24, 43-ML25, 43-ML26.2, 43-ML27.2, 43- ML28.1, 43-ML29, 43-ML40, 43-ML41, 43-ML42, 43-ML43, 43-ML44, 43-ML45, 43-ML46, 43-ML47, and 43-ML48 |
| Escondido Canyon | 415-ML2 and 415-ML3 |
| Placerita Creek | 342-ML5 |
| Santa Maria Creek and Garapito Creek | 73-ML21, 73-ML22, 73-ML23 and 73-ML31 |
| Topanga Canyon | 73-ML11, 73-ML12 and 73-ML13 |
| Red Rock Canyon | 73-ML29 and 73-ML30 |
| Latigo Canyon | 720-ML1 and 720-ML2 |
| Sierra Pelona Wash | 881-ML1, 881-ML2 and 881-ML3 |
| Red Rover Mine Canyon | 441-ML1, 441-ML2, 441-ML3, 441-ML4 and 441-ML5 |
| Crown Valley Drain | 883-ML1, 883-ML2, 883-ML3, 883-ML4 and 883-ML5 |
| Baker Canyon | 410-ML24, 410-ML25, 410-ML26, 410-ML27 and 410-ML28 |
| Jones Canyon | 410-ML8, 410-ML9 and 410-ML10 |
| Kashmere Canyon | 410-ML4, 410-ML5, 410-ML6 and 410-ML7 |
| Kentucky Springs Canyon | 407-ML13, 407-ML14, 407-ML15, 407-ML16, 407-ML17, 407-ML18 and 407-ML19 |
| Soledad Canyon | 407-ML1, 407-ML2, 407-ML3, 407-ML4, 407-ML5, 407- ML6, 407-ML7, 407-ML8, 407-ML9, 407-ML10, 407-ML11 and 407-ML12 |
| San Martinez Grande Canyon | 748-ML1, 748-ML2, 748-ML3, 748-ML4 and 748-ML5 |
| Spade Spring Canyon | 366-ML21, 366-ML22 |
| Letteau Canyon | 392-ML10, 392-ML11, 392-ML12 |
| Sloan Canyon | 388-ML4, 388-ML5, 388-ML6 |
| Romero Canyon | 388-ML7, 388-ML8 |
| Aliso Canyon | 406-ML1, 406-ML-2 and 406-ML-3 |
| Acton Canyon | 403-ML3 |
| Shannon Valley | 410-ML1, 410-ML2 |
| Browns Canyon | 133-ML31, 133-ML33, 133-ML-34 |
| Pasadena Glen | 32-ML1, 32-ML2B, 32-ML3B and 32-ML4 |
(Ord. 2022-0028 § 2, 2022; Ord. 2018-0005 § 2, 2018; Ord. 2016-0002 §§ 2, 3, 2016; Ord. 2011-0039 § 2, 2011; Ord. 94- 0027 § 1, 1994; Ord. 91-0047 § 1, 1991; Ord. 90-0170 § 1, 1990; Ord. 90-0147 § 1, 1990; Ord. 90-0131 § 1, 1990; Ord. 90- 0073 § 1, 1990; Ord. 90-0062 § 1, 1990; Ord. 90-0024 § 1, 1990; Ord. 90-0005 § 1, 1990; Ord. 89-0133 § 1, 1989; Ord. 89- 0072 § 1, 1989; Ord. 89-0067 § 1, 1989; Ord. 87-0120 § 1, 1987; Ord. 86-0179 § 1, 1986; Ord. 86-0106 § 1, 1986; Ord. 86- 0084 § 1, 1986; Ord. 86-0023 § 1, 1986; Ord. 86-0002 § 1, 1986; Ord. 85-0184 § 1, 1985; Ord. 86-0169 § 1, 1985; Ord. 85- 0143 § 1, 1985; Ord. 85-0134 § 1, 1985; Ord. 85-0115 § 1, 1985; Ord. 84-0222 § 1, 1984; Ord. 84-0177 § 1, 1984; Ord. 84- 0172 § 1, 1984; Ord. 84-0158 § 1, 1984; Ord. 84-0152 § 1, 1984; Ord. 84-0136 § 1, 1984; Ord. 84-0009 § 1, 1984; Ord. 84- 0006 § 1, 1984; Ord. 84-0002 § 1, 1984; Ord. 83-202 § 1, 1983; Ord. 83-193 § 1, 1983; Ord. 83-0178 § 1, 1983; Ord. 83-0162 § 1, 1983; Ord. 83-0159 § 1, 1983; Ord. 83-0117 § 1, 1983; Ord. 83-0027 § 1, 1983; Ord. 81-0021 § 1, 1981; Ord. 12430 § 1, 1981; Ord. 12266 § 1, 1980; Ord. 12352 § 1, 1981; Ord. 12260 § 1, 1980; Ord. 12189 § 1, 1980; Ord. 12114 § 2, 1980.)
11.60.030 - Maps.¶
(Editor's Note: Maps were added by ordinances cited in Section 11.60.020.)
(Ord. 2022-0028 § 3, 2022; Ord. 2018-0005 § 3, 2018; Ord. 2016-0002 § 3, 2016.)
11.60.040 - Areas of Special Flood Hazard.¶
The areas of special flood hazard identified by the Federal Emergency Management Agency (FEMA) in the "Flood Insurance Study for Los Angeles County, California and Incorporated Areas" dated September 26, 2008 (FIS), with accompanying Flood Insurance Rate Maps (FIRM's) and all subsequent amendments and/or revisions, are hereby adopted by reference and declared to be a part of this Code. The FIS, FIRM's and related amendments and revisions are on file at the County of Los Angeles Department of Public Works, 900 South Fremont Avenue, Alhambra, California.
(Ord. 2016-0062 § 2, 2016.)
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