Airports 501 to 550
Alder Springs Forest Service Heliport
Siskiyou County Airport
Lonnie Pool Field Weaverville Airport
Montague-Yreka Rohrer Field
Elko Regional Airport
Lake Berryessa Seaplane Base
Gravelly Valley Airport
Potter Valley, California, United States — 317 km (171 nm) WSW
Redbud Community Hospital Heliport
Northeastern Nevada Regional Hospital Heliport
Konocti - Clear Lake Seaplane Base
Kelseyville, California, United States — 322 km (174 nm) WSW