- Lassen Volcanic National Park, Butte Lake.1
- Lassen Volcanic National Park, Drakesbad.1
- Lassen Volcanic National Park, Juniper Lake, Cameron Meadow trail, north of trail summit.1
- Lassen Volcanic National Park, Lassen Loop east of Diamond Peak.1
- Lassen Volcanic National Park, lower slopes of Pilot Mountain1
- Lassen Volcanic National Park, north end of Willow Lake1
- Lassen Volcanic National Park. Meadow near Soda Spring, Drakesbad.1
- Lassen. Bogard Ranger Sta., Harvey Valley, NW of Susanvile.1
- Ledum Swamp on road to Point Reyes.1
- Leevining Grade, east slope of Sierra Nevada1
- Lembert Dome, Tuolumne Meadows.1
- Leona1
- Lewis Ranch near Nevada City2
- Lewis' Ranch near Nevada City1
- LiLiebre Mountains, Castaic Creek drainage from Fish Canyon downstream to power plant, just north of upper end of Castaic Lake.1
- Liebre Mountains, Castaic Creek drainage from Fish Canyon downstream to power plant, just north of upper end of Castaic Lake.1
- Liebre Mountains, Knapp Ranch area at upper end of Castaic Creek drainage in broad alluival valley at head of Cienaga Canyon, south of Liebre Mountain.1
- Liebre Mountains. North side of northwesternmost end of foothills (of San Gabriel Mts.) between Bouquet Junction & Bonelli Ranch1
- Little Oregon Creek.1
- Little Rock Creek, Angeles National Forest1