Noto Railway Nanao Line

Although the Nanao Line name traces back to the privately built Nanao Railway of the 1890s, the portion that became the Noto Railway line — everything north of Nanao Station — was constructed entirely after nationalisation by the state railway. Work on the route north of Nanao began in the summer of 1924, twenty-six years after the Tsubata–Nanao section had opened. The first extension, from Nanao to Wakura (today Wakura-Onsen), opened on 15 December 1925, bringing the railway to the hot-spring resort that would become the line's busiest intermediate point.

The line then advanced up the peninsula in stages. On 31 October 1928 it was extended from Wakura to Noto-Nakajima, opening Tatsuruhama, Kasashiho and Noto-Nakajima stations; on 27 August 1932 it reached Anamizu, opening Nishigishi, Noto-Kashima and Anamizu. The final leg, from Anamizu north to Wajima, opened on 30 July 1935 and completed the route, adding Noto-Mii, Noto-Ichinose and Wajima. For the next half-century the corridor was a Japanese Government Railways and then Japanese National Railways (JNR) line; centralised traffic control was introduced in 1972, freight service was withdrawn in stages in the 1970s and 1980s, and Wakura was renamed Wakura-Onsen on 1 July 1980. With the breakup and privatisation of JNR on 1 April 1987, the line passed to JR West.

The transfer to Noto Railway grew directly out of the long-sought electrification of JR West's Nanao Line. When electrification of the Tsubata–Wakura-Onsen section was finally agreed for 1991, JR West required that Ishikawa Prefecture take over the line north of Wakura-Onsen in exchange. Noto Railway — the third-sector operator that already ran the separate Noto Line to the tip of the peninsula — assumed operation of the Nanao–Wajima section on 1 September 1991. Because the line was not a designated deficit local line (特定地方交通線) eligible for conversion subsidies, it was judged cheaper to lease the route than to buy it: JR West kept ownership of the track and stations, and the 5.1-kilometre Nanao–Wakura-Onsen segment became a shared section. This was the first instance in Japan of a line that was not a designated deficit local line being converted to third-sector operation.

The arrangement left Noto Railway carrying a heavy financial burden, most of it on the Nanao Line, and the lightly used Anamizu–Wajima section drew scrutiny almost at once. As road improvements such as the Noto toll road siphoned off passengers and the line's poor alignment kept trains slow, the deficit mounted. Express services were withdrawn — the Wajima-bound Notoji express ended in March 2001 — and on 1 April 2001 the 20.4-kilometre Anamizu–Wajima section was abandoned, the first closure of a third-sector line that had been taken over after JNR's privatisation. The remaining in-line express services, the Notoji and the Noto Koiji, were both discontinued in 2002. When the connecting Noto Line closed in 2005, the Nanao Line became Noto Railway's sole route.

In its modern form the line carries hourly local trains running the full length between Nanao and Anamizu, normally a single NT200-series railcar with two-car formations at peak times. Since 29 April 2015 Noto Railway has also run the Noto Satoyama Satoumi sightseeing train, using dedicated NT300-series cars that pause at Noto-Nakajima to let passengers view a preserved postal car and slow along the Nanao Bay shore. The 2007 Noto earthquake briefly suspended services in March that year, with operations resuming within days.

The line was struck far more severely by the Noto Peninsula earthquake of 1 January 2024, which buckled track, washed soil onto the right-of-way and damaged stations along the route, halting all services. Because JR West owns the infrastructure, it carried out the restoration work; trains returned between Nanao and Noto-Nakajima on 15 February 2024, and the entire line reopened on 6 April 2024, though some sections were initially worked at reduced speed. From September 2024 Noto Railway began running storyteller trains to convey the lessons of the disaster to passengers, and in 2025 these were placed on a regular weekend schedule.

• 1924Summer: construction begins on the route north of Nanao Station, the part that would later become the Noto Railway line.
• 192515 December: the Japanese Government Railways extends the Nanao Line from Nanao to Wakura (now Wakura-Onsen); Wakura Station opens.
• 192831 October: the line is extended from Wakura to Noto-Nakajima; Tatsuruhama, Kasashiho and Noto-Nakajima stations open.
• 193227 August: the line is extended from Noto-Nakajima to Anamizu; Nishigishi, Noto-Kashima and Anamizu stations open.
• 193530 July: the Anamizu–Wajima section opens, completing the through route; Noto-Mii, Noto-Ichinose and Wajima stations open.
• 197214 March: centralised traffic control (CTC) is introduced on the line.
• 19801 July: Wakura Station is renamed Wakura-Onsen.
• 19871 April: with the breakup and privatisation of Japanese National Railways, the line passes to JR West.
• 19911 September: Noto Railway takes over operation of the Nanao–Wajima section (53.5 km) as a Type-2 operator, following electrification of the JR West section; JR West retains ownership of the track.
• 20011 April: the Anamizu–Wajima section (20.4 km) is abandoned — the first closure of a third-sector line taken over after JNR's privatisation. (The Wajima-bound Notoji express had ended on 1 March.)
• 2002The in-line express services end: the Notoji on 23 March and the Noto Koiji on 21 October, leaving no express trains on the line.
• 200725 March: services are suspended by the 2007 Noto earthquake; operation resumes line-wide from the first train on 30 March.
• 201529 April: the Noto Satoyama Satoumi sightseeing train enters service, using NT300-series cars.
• 20241 January: the Noto Peninsula earthquake suspends the whole line; with JR West (the owner) carrying out repairs, Nanao–Noto-Nakajima reopens on 15 February and the entire line reopens on 6 April.