Hokuriku Railroad Asanogawa Line

The line was built by the Asanogawa Electric Railway, a private company that received its railway licence on 25 May 1923 for the stretch between Nishihorikawa-chō in Kanazawa and Katatsu village in Ishikawa District, and was formally established on 23 January 1924 under its first president, Kataro Hirasawa. Its first section, the 5.3 km between Nanatsuya and Shin-Susaki (later abolished), opened on 10 May 1925. The following year, on 18 May 1926, the 0.8 km extension from Kanazawa-Ekimae — the present Hokutetsu-Kanazawa — to Nanatsuya brought the line into the centre of Kanazawa.

After receiving a further licence in 1928 for the section on toward Uchinada village in Kahoku District, the company opened the 2.4 km from Shin-Susaki through Awagasaki-Yūen-Mae (the present Uchinada) to Awagasaki-Kaigan on 14 July 1929. The Asanogawa Electric Railway followed the model of the Hankyū Railway in pursuing diversified, traffic-generating businesses: it had opened the Awagasaki-Yūen amusement park in 1925 and sited a station nearby for the convenience of visitors, and it also ran pleasure boats and, from the mid-1930s, bus services.

The Pacific War brought retrenchment. Bus operations were suspended in September 1941, the Awagasaki-Yūen amusement park closed the same year, and on 11 February 1945 the 1.8 km seaside section between Awagasaki-Yūen-Mae and Awagasaki-Kaigan was abandoned. Then, on 1 October 1945, as part of the wartime consolidation of Ishikawa's private railways, the Hokuriku Railroad absorbed the Asanogawa Electric Railway, and the route became the Hokuriku Railroad's Asanogawa Line.

Under Hokutetsu the line was gradually rationalised. The seaside section reopened in 1952, and on 14 May 1960 Awagasaki-Yūen-Mae Station was shifted 0.1 km toward the coast and renamed Uchinada. Shin-Susaki Station closed on 30 June 1961, freight operations ended on 1 April 1972, and the short Uchinada–Awagasaki-Kaigan branch was suspended in September 1972 and formally abandoned on 8 July 1974, leaving the present Hokutetsu-Kanazawa–Uchinada alignment. Mitsuya Station, renamed Tsuribashi in 1946, reverted to the name Mitsuya in December 1974.

The line was modernised from the 1990s onward. On 19 December 1996 the overhead voltage was raised from 600 V to 1,500 V DC and one-man operation began, and on 28 March 2001 the Hokutetsu-Kanazawa–Nanatsuya section was placed underground, automatic train stop (ATS) was brought into use, and Nanatsuya Station was moved 0.1 km toward Hokutetsu-Kanazawa. Express services were abolished on 1 December 2006, leaving an all-stations local service.

In the modern era the Asanogawa Line operates as a compact commuter route within the Kanazawa area, simplifying its timetable to a single all-week schedule in 2017, introducing departure melodies at its two terminals in 2019 and adopting station numbering the same year. Its second-hand fleet has continued to be renewed, with former Tokyo Metro 03-series cars entering service on 21 December 2020. On 1 January 2024 the line suspended operations after the Noto Peninsula earthquake, resuming on 3 January; today it remains a short, single-track local line carrying everyday passengers between central Kanazawa and Uchinada.

• 192325 May: the Asanogawa Electric Railway receives its railway licence for the Nishihorikawa-chō (Kanazawa)–Katatsu village section.
• 192423 January: the Asanogawa Electric Railway Co. is established, with Kataro Hirasawa as its first president.
• 192510 May: the Asanogawa Electric Railway opens its first section, the 5.3 km from Nanatsuya to Shin-Susaki (later abolished); the Awagasaki-Yūen amusement park opens the same year.
• 192618 May: the 0.8 km from Kanazawa-Ekimae (the present Hokutetsu-Kanazawa) to Nanatsuya opens, reaching central Kanazawa.
• 192914 July: the 2.4 km from Shin-Susaki through Awagasaki-Yūen-Mae (the present Uchinada) to Awagasaki-Kaigan opens.
• 194511 February: the 1.8 km seaside section, Awagasaki-Yūen-Mae–Awagasaki-Kaigan, is abandoned. 1 October: the Hokuriku Railroad absorbs the Asanogawa Electric Railway, and the route becomes its Asanogawa Line.
• 1952The Awagasaki-Yūen-Mae–Awagasaki-Kaigan section reopens.
• 19565 July: Hokutetsu-Kanazawa Station is relocated in connection with the widening of the Kanazawa-Ekimae plaza.
• 196014 May: Awagasaki-Yūen-Mae Station is moved 0.1 km toward the coast and renamed Uchinada.
• 196130 June: Shin-Susaki Station closes.
• 19721 April: freight operations on the line end; the Uchinada–Awagasaki-Kaigan branch is suspended on 1 September.
• 19748 July: the Uchinada–Awagasaki-Kaigan branch is formally abandoned. 1 December: Tsuribashi Station reverts to the name Mitsuya.
• 199619 December: the overhead voltage is raised from 600 V to 1,500 V DC and one-man operation begins.
• 200128 March: the Hokutetsu-Kanazawa–Nanatsuya section is placed underground, ATS is brought into use, and Nanatsuya Station is moved 0.1 km toward Hokutetsu-Kanazawa.
• 20061 December: express services are abolished and all trains become all-stations locals.
• 202021 December: former Tokyo Metro 03-series cars enter service on the line.
• 20241 January: the line suspends operations after the Noto Peninsula earthquake, resuming on 3 January.