Uetsu Main Line

• Total length: 274.4 km (170.5 mi) (Fukushima, Aomori, Tsuchizaki, Akitakō)
• Operators, distances:
  • East Japan Railway Company (Services and tracks)
    • Niitsu , Akita: 271.7 km (168.8 mi)
  • Japan Freight Railway Company (Services and tracks)
    • Sakata , Sakata-Minato: 2.7 km (1.7 mi)
  • Japan Freight Railway Company (Services)
    • Niitsu , Akita: 271.7 km (168.8 mi)
• Tracks:
  • See station list for details
• Electrification:
  • Niitsu , Murakami: 1,500 V DC
  • Murakami , Akita: 20 kV AC, 50 Hz
• Railway signalling:
• Maximum speed:
  • Niitsu , Murakami: 120 km/h (75 mph)
  • Murakami , Imagawa: 100 km/h (62 mph)
  • Imagawa , Sanze: 95 km/h (59 mph)
  • Sanze , Sakata: 120 km/h (75 mph)
  • Sakata , Akita: 95 km/h (59 mph)

Limited express, Rapid

As of March 2020, the following services are operated.

Local

Niitsu, Shibata: every 60-180 minutes

Shibata, Murakami: every 60-120 minutes

Murakami, Sakata: every 60-180 minutes

Sakata, Akita: every 60-180 minutes

Between Shibata and Murakami, most of the local trains travel through to/from Niigata via Hakushin Line.

A: Limited Express Inaho

B: Rapid Kairi

C: Rapid Rakuraku Train Murakami, Benibana and other Rapid service trains

Trains stop at stations marked "O", skip at stations marked "|".

Symbols:

• | - Single-track
• ◇ - Single-track; station where trains can pass
• ^ - Double-track section starts from this point
• ∥ - Double-track
• ∨ - Single-track section starts from this point

Present

Local

• E129 series 2/4-car DC EMUs (Niitsu, Murakami, since December 2014)
• 701 series 2/3-car AC EMUs (Sakata, Akita)
• KiHa 110 series (Niitsu - Nezugaseki)
• GV-E400 series (Niitsu-Sakata, since August 2019)

Inaho/Rakuraku Train Murakami

• E653-1000 series 7-car DC/AC EMUs (since September 2013)

Kairi

• HB-E300 series

Former

• 115 series DC EMUs (Niitsu, Murakami, until March 2018)
• E127-0 series 2-car DC EMUs (Shibata, Murakami, until March 2015)
• KiHa 40/47/48 series DMUs (Until March 2020)
• KiHa E120 DMUs (Niitsu, Sakata, until March 2018)
• KiHa 58 series DMUs
• KiHa 52 DMUs
• 485 series DC/AC EMUs (until July 2014) - Inaho, Hakucho, Rakuraku Train Murakami

The line was opened in sections between 1912 and 1924, and electrified in 1972, the same year CTC signalling was commissioned.

Work to double-track the line in sections commenced in 1957, and continued for 25 years until being suspended due to capital expenditure restrictions in 1983, at which time 51% of the route was double-tracked.

On July 28, 2022, JR East announced that ridership in some sectors was less than 2000 persons/day, the deficit for the sector between Murakami Station to Tsuruoka Station being 4,990 billion yen, the largest deficit within the JR East system.

On December 25, 2005, all six cars of a limited express train Inaho No.14 on the Uetsu Line derailed in Yamagata prefecture, about 350 kilometres (220 mi) north of Tokyo. The train was headed south towards Kita-Amarume Station. Three of the cars turned over, causing the deaths of five people and injuring 33 others. Three other persons were originally reported missing, but authorities later discovered that they had disembarked from the train before the accident. It is likely that the event was caused by a tornado although it is uncertain whether or not a tornado was involved with this accident.